From 159c097505dae655fc2c62e6625cdd65da53de83 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 21 Oct 2019 17:37:07 +0300
Subject: [PATCH 001/129] Created circleci config for starting environment

---
 .circleci/config.yml | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 .circleci/config.yml

diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..7a0c6b2
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,40 @@
+version: 2.1
+orbs:
+  bridge:
+    executors:
+      node-dev:
+        docker:
+          - image: circleci/node:10.15
+        environment:
+          TARGET_NETWORK: development
+jobs:
+  prepare_test_environment:
+    executor: bridge/node-dev
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - setup_remote_docker
+      - run: ./demo/start-environment.sh
+      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
+      - run: docker kill ganache_side ganache_home
+      - persist_to_workspace:
+          root: .
+          paths:
+            ./demo/ganache_home_db
+            ./demo/ganache_side_db
+  run_tests:
+    executor: bridge/node-dev
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - setup_remote_docker
+      - attach_workspace:
+          at: .
+      - ls ./demo/ganache_side_db
+workflows:
+  version: 2
+  main:
+    jobs:
+      - prepare_test_environment

From 088aee652d394c7e7b5e7b51d5d9ea18a683800c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 21 Oct 2019 21:43:31 +0300
Subject: [PATCH 002/129] Added more initialization of environment

---
 .circleci/config.yml   | 47 ++++++++++++++++++++++++------------------
 demo/validator-demo.sh |  2 +-
 tests/Dockerfile       | 14 +++++++++++++
 tests/config.json      | 19 +++++++++++++++++
 tests/package.json     |  7 +++++++
 tests/run.sh           |  9 ++++++++
 tests/test/index.js    | 12 +++++++++++
 7 files changed, 89 insertions(+), 21 deletions(-)
 create mode 100644 tests/Dockerfile
 create mode 100644 tests/config.json
 create mode 100644 tests/package.json
 create mode 100755 tests/run.sh
 create mode 100644 tests/test/index.js

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7a0c6b2..bc74df0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,33 +8,40 @@ orbs:
         environment:
           TARGET_NETWORK: development
 jobs:
-  prepare_test_environment:
-    executor: bridge/node-dev
-    steps:
-      - checkout
-      - run: git submodule update --init
-      - setup_remote_docker
-      - run: ./demo/start-environment.sh
-      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
-      - run: docker kill ganache_side ganache_home
-      - persist_to_workspace:
-          root: .
-          paths:
-            ./demo/ganache_home_db
-            ./demo/ganache_side_db
   run_tests:
     executor: bridge/node-dev
     steps:
       - checkout
       - run: git submodule update --init
       - setup_remote_docker
-      - attach_workspace:
-          at: .
-      - ls ./demo/ganache_side_db
+      - run: touch ./src/deploy/.keys.$TARGET_NETWORK
+      - run: ./demo/start-environment.sh
+      - run: touch ./src/test-services/.keys.$TARGET_NETWORK
+      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
+      - run: ./src/test-services/binanceSend/run.sh tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l 100 0.1
+      - run: ./src/test-services/binanceSend/run.sh tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym 100 0.1
+      - run: ./src/test-services/binanceSend/run.sh tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4 100 0.1
+      - run:
+          command: ./demo/validator-demo.sh -d
+          environment:
+            N: 1
+      - run:
+          command: ./demo/validator-demo.sh -d
+          environment:
+            N: 2
+      - run:
+          command: ./demo/validator-demo.sh -d
+          environment:
+            N: 3
+      - run: sleep 10
+      - run:
+          command: ./tests/run.sh
+          environment:
+            HOME_RPC_URL: 'http://ganache_home:8545'
 workflows:
   version: 2
   main:
     jobs:
-      - prepare_test_environment
+      - run_tests
diff --git a/demo/validator-demo.sh b/demo/validator-demo.sh
index 52e0592..5ea1730 100755
--- a/demo/validator-demo.sh
+++ b/demo/validator-demo.sh
@@ -23,4 +23,4 @@ fi
 # load env for particular environment
 source ".env.$TARGET_NETWORK"
 
-docker-compose -p "$NAME" -f ../../src/oracle/docker-compose-test.yml up ${DCU_FLAGS}
+docker-compose -p "$NAME" -f ../../src/oracle/docker-compose-test.yml up ${DCU_FLAGS} $@
diff --git a/tests/Dockerfile b/tests/Dockerfile
new file mode 100644
index 0000000..8acf8e4
--- /dev/null
+++ b/tests/Dockerfile
@@ -0,0 +1,14 @@
+FROM node:10.16.0-alpine
+
+WORKDIR /tests
+
+RUN npm install -g mocha
+
+COPY ./package.json .
+
+RUN npm install
+
+COPY config.json ./
+COPY test ./test
+
+ENTRYPOINT ["mocha"]
diff --git a/tests/config.json b/tests/config.json
new file mode 100644
index 0000000..fa49f75
--- /dev/null
+++ b/tests/config.json
@@ -0,0 +1,19 @@
+{
+  "users": [
+    {
+      "privateKey": "7ed93ad7753e00b52265a73dfbbcd2296256772965323fcb9a6320b5cd084b89",
+      "ethAddress": "0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa",
+      "bncAddress": "tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l"
+    },
+    {
+      "privateKey": "2ad6e3a232ad3ea058b61352302118a99085600ff8b6eec4ccf0066a33756231",
+      "ethAddress": "0xf7ca4aed1795e424433498cef43f6a3825c88731",
+      "bncAddress": "tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym"
+    },
+    {
+      "privateKey": "eb6dd328677b3fa2822fb8e834507e569bda52e8ffa49266df0f2de239c4ec98",
+      "ethAddress": "0xad6c8127143032d843a260c5d379d8d9b3d51f15",
+      "bncAddress": "tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4"
+    }
+  ]
+}
diff --git a/tests/package.json b/tests/package.json
new file mode 100644
index 0000000..3941246
--- /dev/null
+++ b/tests/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "tests",
+  "version": "0.0.1",
+  "dependencies": {
+    "web3": "1.0.0-beta.55"
+  }
+}
diff --git a/tests/run.sh b/tests/run.sh
new file mode 100755
index 0000000..7337fd2
--- /dev/null
+++ b/tests/run.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+cd $(dirname "$0")
+
+docker build -t tests . > /dev/null
+
+docker run --network blockchain_home --rm -e HOME_RPC_URL tests $@
diff --git a/tests/test/index.js b/tests/test/index.js
new file mode 100644
index 0000000..b6f7c8a
--- /dev/null
+++ b/tests/test/index.js
@@ -0,0 +1,12 @@
+const Web3 = require('web3')
+const { users } = require('../config')
+
+const web3 = new Web3(process.env.HOME_RPC_URL)
+
+describe('check balance', function () {
+  it('should have correct balance', async function () {
+    const balance = await web3.eth.getBalance(users[0].ethAddress)
+    console.log(balance.toNumber())
+    return 0
+  })
+})

From 44ae80b6ef4027bf5edd0e828e26e882db349d9f Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 21 Oct 2019 22:01:15 +0300
Subject: [PATCH 003/129] Made init script in tests

---
 .circleci/config.yml | 23 +----------------------
 tests/init.sh        | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 22 deletions(-)
 create mode 100755 tests/init.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
index bc74df0..ae893e7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,28 +14,7 @@ jobs:
       - checkout
       - run: git submodule update --init
       - setup_remote_docker
-      - run: touch ./src/deploy/.keys.$TARGET_NETWORK
-      - run: ./demo/start-environment.sh
-      - run: touch ./src/test-services/.keys.$TARGET_NETWORK
-      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
-      - run: ./src/test-services/binanceSend/run.sh tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l 100 0.1
-      - run: ./src/test-services/binanceSend/run.sh tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym 100 0.1
-      - run: ./src/test-services/binanceSend/run.sh tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4 100 0.1
-      - run:
-          command: ./demo/validator-demo.sh -d
-          environment:
-            N: 1
-      - run:
-          command: ./demo/validator-demo.sh -d
-          environment:
-            N: 2
-      - run:
-          command: ./demo/validator-demo.sh -d
-          environment:
-            N: 3
-      - run: sleep 10
+      - run: ./tests/init.sh
       - run:
           command: ./tests/run.sh
           environment:
diff --git a/tests/init.sh b/tests/init.sh
new file mode 100755
index 0000000..1ce0518
--- /dev/null
+++ b/tests/init.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
+./demo/start-environment.sh
+echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
+./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
+./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
+./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
+./src/test-services/binanceSend/run.sh tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l 100 0.1
+./src/test-services/binanceSend/run.sh tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym 100 0.1
+./src/test-services/binanceSend/run.sh tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4 100 0.1
+N=1 ./demo/validator-demo.sh -d
+N=2 ./demo/validator-demo.sh -d
+N=3 ./demo/validator-demo.sh -d
+sleep 10

From 80b4914d719c973e731ab0456ca799f31dff2a29 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 22 Oct 2019 14:52:24 +0300
Subject: [PATCH 004/129] Changed docker remote engine version

---
 .circleci/config.yml | 3 ++-
 tests/init.sh        | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index ae893e7..fe3d37c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,7 +13,8 @@ jobs:
     steps:
       - checkout
       - run: git submodule update --init
-      - setup_remote_docker
+      - setup_remote_docker:
+          version: 18.09.3
       - run: ./tests/init.sh
       - run:
           command: ./tests/run.sh
diff --git a/tests/init.sh b/tests/init.sh
index 1ce0518..3604541 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh
 echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK

From 83f9b1c2679d00f4c22554b94e477d4a07a96841 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 22 Oct 2019 15:13:06 +0300
Subject: [PATCH 005/129] Test remote docker engine

---
 src/tss/Dockerfile-local | 4 ++++
 tests/init.sh            | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 632aadf..f959c06 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -12,6 +12,10 @@ WORKDIR /tss
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
+RUN ls /
+RUN ls /tss
+RUN ls /tss/src
+
 RUN cargo build --release || true
 
 COPY ./multi-party-ecdsa /tss/
diff --git a/tests/init.sh b/tests/init.sh
index 3604541..a19ff57 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,6 +2,10 @@
 
 set -e
 
+ls .
+ls ./src/tss
+ls ./src/tss/multi-party-ecdsa
+
 docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh
 echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK

From 061b69071d422e70b3d7b553262432b48a830d1c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 22 Oct 2019 17:25:31 +0300
Subject: [PATCH 006/129] Test remote docker engine 2

---
 src/tss/Dockerfile-local | 4 ++--
 tests/init.sh            | 4 +---
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index f959c06..659c39f 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -12,9 +12,9 @@ WORKDIR /tss
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
-RUN ls /
 RUN ls /tss
-RUN ls /tss/src
+RUN cat /tss/Cargo.toml
+RUN cargo check
 
 RUN cargo build --release || true
 
diff --git a/tests/init.sh b/tests/init.sh
index a19ff57..ae70f62 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,9 +2,7 @@
 
 set -e
 
-ls .
-ls ./src/tss
-ls ./src/tss/multi-party-ecdsa
+cat ./src/tss/multi-party-ecdsa/Cargo.toml
 
 docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh

From aed0f59097dae0169adc6bc1363140fe1111966b Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 12:53:07 +0300
Subject: [PATCH 007/129] Test ls . in Dockerfile-local

---
 src/tss/Dockerfile-local | 4 ++--
 tests/init.sh            | 2 --
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 659c39f..31e8515 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -13,8 +13,8 @@ COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
 RUN ls /tss
-RUN cat /tss/Cargo.toml
-RUN cargo check
+RUN ls .
+RUN pwd
 
 RUN cargo build --release || true
 
diff --git a/tests/init.sh b/tests/init.sh
index ae70f62..3604541 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,8 +2,6 @@
 
 set -e
 
-cat ./src/tss/multi-party-ecdsa/Cargo.toml
-
 docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh
 echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK

From 6d0d9f46178cbb6712b0b3af00edce369d88adc4 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 12:58:32 +0300
Subject: [PATCH 008/129] Specified explicit manifest-path

---
 src/tss/Dockerfile-local | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 31e8515..b6fb7e0 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -12,14 +12,10 @@ WORKDIR /tss
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
-RUN ls /tss
-RUN ls .
-RUN pwd
-
-RUN cargo build --release || true
+RUN cargo build --manifest-path /tss/Cargo.toml --release || true
 
 COPY ./multi-party-ecdsa /tss/
 
-RUN cargo build --release
+RUN cargo build --manifest-path /tss/Cargo.toml --release
 
 CMD echo Done

From 0fa28f27a72dd7669dfb35a59e398a911314a536 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 15:02:04 +0300
Subject: [PATCH 009/129] Moved to official rust nightly docker image

---
 src/tss/Dockerfile-local | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index b6fb7e0..27bc344 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -1,21 +1,17 @@
-FROM ubuntu:19.10
+FROM rustlang/rust:nightly
 
 RUN apt-get update && \
     apt-get install -y curl build-essential git openssl pkg-config libssl-dev libgmp3-dev
 
-RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly -y
-
-ENV PATH=/root/.cargo/bin:$PATH
-
 WORKDIR /tss
 
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
-RUN cargo build --manifest-path /tss/Cargo.toml --release || true
+RUN cargo build --manifest-path /tss/Cargo.toml -vv --release || true
 
 COPY ./multi-party-ecdsa /tss/
 
-RUN cargo build --manifest-path /tss/Cargo.toml --release
+RUN cargo build --manifest-path /tss/Cargo.toml -vv --release
 
 CMD echo Done

From 437a70ae5b4e327172d5dc7648d590a5f3740339 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 17:51:06 +0300
Subject: [PATCH 010/129] Added chmod 777

---
 src/tss/Dockerfile-local | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 27bc344..2ebed37 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -1,6 +1,7 @@
 FROM rustlang/rust:nightly
 
-RUN apt-get update && \
+RUN cargo --version && \
+    apt-get update && \
     apt-get install -y curl build-essential git openssl pkg-config libssl-dev libgmp3-dev
 
 WORKDIR /tss
@@ -8,6 +9,8 @@ WORKDIR /tss
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
+RUN chmod 777 /tss/Cargo.toml
+
 RUN cargo build --manifest-path /tss/Cargo.toml -vv --release || true
 
 COPY ./multi-party-ecdsa /tss/

From 128c986a277584ead21be1be314c9c9ca71c40e7 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 17:57:33 +0300
Subject: [PATCH 011/129] Change rust image

---
 src/tss/Dockerfile-local | 2 +-
 tests/init.sh            | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 2ebed37..75a39dc 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -1,4 +1,4 @@
-FROM rustlang/rust:nightly
+FROM rust:1.38
 
 RUN cargo --version && \
     apt-get update && \
diff --git a/tests/init.sh b/tests/init.sh
index 3604541..94da659 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 set -e
+set -v
 
 docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh

From f3278a9b1ca6782a7623829fe5433eb43e713fda Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 18:09:49 +0300
Subject: [PATCH 012/129] Used 1.39 nightly rust

---
 src/tss/Dockerfile-local | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 75a39dc..9762de7 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -1,6 +1,7 @@
 FROM rust:1.38
 
-RUN cargo --version && \
+RUN rustup default nightly-2019-08-28 && \
+    cargo --version && \
     apt-get update && \
     apt-get install -y curl build-essential git openssl pkg-config libssl-dev libgmp3-dev
 
@@ -9,12 +10,10 @@ WORKDIR /tss
 COPY ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
-RUN chmod 777 /tss/Cargo.toml
-
-RUN cargo build --manifest-path /tss/Cargo.toml -vv --release || true
+RUN cargo build --release || true
 
 COPY ./multi-party-ecdsa /tss/
 
-RUN cargo build --manifest-path /tss/Cargo.toml -vv --release
+RUN cargo build --release
 
 CMD echo Done

From b5952ce02acec340a149fc3f11b89257dd4f80aa Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 23 Oct 2019 19:12:27 +0300
Subject: [PATCH 013/129] Correct dependency building. Moved building tss in
 separate job

---
 .circleci/config.yml     | 30 ++++++++++++++++++++++++++----
 src/tss/Dockerfile-local |  7 ++++++-
 tests/run.sh             |  3 +--
 3 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index fe3d37c..118a455 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,20 +8,42 @@ orbs:
         environment:
           TARGET_NETWORK: development
 jobs:
-  run_tests:
+  init:
     executor: bridge/node-dev
     steps:
       - checkout
       - run: git submodule update --init
       - setup_remote_docker:
           version: 18.09.3
-      - run: ./tests/init.sh
+          docker_layer_caching: true
+      - run: docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
+      - run: docker save -o /home/tss.tar tss
+      - persist_to_workspace:
+          root: /home
+          paths:
+            - tss.tar
+
+  run_tests:
+    executor: bridge/node-dev
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - attach_workspace:
+          at: /home
+      - setup_remote_docker:
+          version: 18.09.3
+          docker_layer_caching: true
+      - run: docker load -i /home/tss.tar
+      - run: docker images
       - run:
-          command: ./tests/run.sh
+          command: ./tests/init.sh
           environment:
             HOME_RPC_URL: 'http://ganache_home:8545'
 workflows:
   version: 2
   main:
     jobs:
-      - run_tests
+      - init
+      - run_tests:
+          requires:
+            - init
diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
index 9762de7..b0770df 100644
--- a/src/tss/Dockerfile-local
+++ b/src/tss/Dockerfile-local
@@ -7,13 +7,18 @@ RUN rustup default nightly-2019-08-28 && \
 
 WORKDIR /tss
 
-COPY ./multi-party-ecdsa/Cargo.toml /tss/
+COPY ./multi-party-ecdsa/Cargo.lock ./multi-party-ecdsa/Cargo.toml /tss/
 COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
 
+# Download all dependencies
+RUN cargo fetch
+
+# Build dependencies
 RUN cargo build --release || true
 
 COPY ./multi-party-ecdsa /tss/
 
+# Build final executables
 RUN cargo build --release
 
 CMD echo Done
diff --git a/tests/run.sh b/tests/run.sh
index 7337fd2..d49f770 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -1,8 +1,7 @@
 #!/bin/bash
 
 set -e
-
-cd $(dirname "$0")
+set -v
 
 docker build -t tests . > /dev/null
 

From 2f241dffbea96ed048080f96a27e3b3fd00f2bf8 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 24 Oct 2019 16:05:33 +0300
Subject: [PATCH 014/129] Moved contracts deploy process in separate init job

---
 .circleci/config.yml      | 48 +++++++++++++++++++++++++++++++--------
 DEMO.md                   |  2 +-
 demo/start-environment.sh |  4 ++--
 src/tss/Dockerfile        | 22 +++++++++---------
 src/tss/Dockerfile-local  | 24 --------------------
 tests/init.sh             |  4 ----
 6 files changed, 53 insertions(+), 51 deletions(-)
 delete mode 100644 src/tss/Dockerfile-local

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 118a455..1c46009 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ orbs:
         environment:
           TARGET_NETWORK: development
 jobs:
-  init:
+  init_tss:
     executor: bridge/node-dev
     steps:
       - checkout
@@ -16,12 +16,36 @@ jobs:
       - setup_remote_docker:
           version: 18.09.3
           docker_layer_caching: true
-      - run: docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
-      - run: docker save -o /home/tss.tar tss
+      - run: docker build -t tss ./src/tss
+      - run: docker save tss | gzip ./workspace/tss.tar.gz
       - persist_to_workspace:
-          root: /home
+          root: ./workspace
           paths:
-            - tss.tar
+            - tss.tar.gz
+
+  init_blockchains:
+    executor: bridge/node-dev
+    steps:
+      - checkout
+      - run: git submodule update --init
+      - setup_remote_docker:
+          version: 18.09.3
+          docker_layer_caching: true
+      - run: ./demo/start-environment.sh
+      - run: touch ./src/test-services/.keys.$TARGET_NETWORK
+      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
+      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
+      - run: docker kill ganache_side ganache_home
+      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
+      - run: docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
+      - run: docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
+      - run: docker kill tmp
+      - persist_to_workspace:
+          root: ./workspace
+          paths:
+              - ganache_side_data
+              - ganache_home_data
 
   run_tests:
     executor: bridge/node-dev
@@ -29,12 +53,16 @@ jobs:
       - checkout
       - run: git submodule update --init
       - attach_workspace:
-          at: /home
+          at: ./workspace
       - setup_remote_docker:
           version: 18.09.3
           docker_layer_caching: true
-      - run: docker load -i /home/tss.tar
+      - run: docker load -i ./workspace/tss.tar.gz
       - run: docker images
+      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
+      - run: docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
+      - run: docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
+      - run: docker kill tmp
       - run:
           command: ./tests/init.sh
           environment:
@@ -43,7 +71,9 @@ workflows:
   version: 2
   main:
     jobs:
-      - init
+      - init_tss
+      - init_blockchains
       - run_tests:
           requires:
-            - init
+            - init_tss
+            - init_blockchains
diff --git a/DEMO.md b/DEMO.md
index 8f51cf2..6294efe 100644
--- a/DEMO.md
+++ b/DEMO.md
@@ -72,7 +72,7 @@ The public Binance Chain testnet will keep a BEP2 token.
       ```
     * (1.10) Build TSS to be used in the bridge oracles:
       ```
-      docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
+      docker build -t tss ./src/tss
       ```
 2. Run test environment
     * 2.1 Running in development mode (using local ganache networks):
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 1cf6371..3747465 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -20,7 +20,7 @@ start_dev_blockchain_networks() {
 
   docker kill ganache_side > /dev/null 2>&1 || true
   docker network create blockchain_side > /dev/null 2>&1 || true
-  docker run -d --network blockchain_side --rm --name ganache_side -v "$SIDE_GANACHE_DB:/app/db" \
+  docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" -v "$SIDE_GANACHE_DB:/app/db" \
       -p "7545:8545" \
       trufflesuite/ganache-cli:latest \
       -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
@@ -29,7 +29,7 @@ start_dev_blockchain_networks() {
 
   docker kill ganache_home > /dev/null 2>&1 || true
   docker network create blockchain_home > /dev/null 2>&1 || true
-  docker run -d --network blockchain_home --rm --name ganache_home -v "$HOME_GANACHE_DB:/app/db" \
+  docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" -v "$HOME_GANACHE_DB:/app/db" \
       -p "8545:8545" \
       trufflesuite/ganache-cli:latest \
       -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
diff --git a/src/tss/Dockerfile b/src/tss/Dockerfile
index 5921579..9b509e8 100644
--- a/src/tss/Dockerfile
+++ b/src/tss/Dockerfile
@@ -3,24 +3,24 @@ FROM ubuntu:19.10
 RUN apt-get update && \
     apt-get install -y curl build-essential git openssl pkg-config libssl-dev libgmp3-dev
 
-RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly -y
-
+RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain nightly-2019-08-28 -y
 ENV PATH=/root/.cargo/bin:$PATH
-
-WORKDIR /repo
-
-RUN git clone https://github.com/KZen-networks/multi-party-ecdsa.git .
-
-RUN mkdir -p /tss/src && \
-    cp /repo/Cargo.toml /tss/ && \
-    cp /repo/src/lib.rs /tss/src/
+RUN cargo --version
 
 WORKDIR /tss
 
+COPY ./multi-party-ecdsa/Cargo.lock ./multi-party-ecdsa/Cargo.toml /tss/
+COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
+
+# Download all dependencies
+RUN cargo fetch
+
+# Build dependencies
 RUN cargo build --release || true
 
-RUN cp -Tr /repo /tss
+COPY ./multi-party-ecdsa /tss/
 
+# Build final executables
 RUN cargo build --release
 
 CMD echo Done
diff --git a/src/tss/Dockerfile-local b/src/tss/Dockerfile-local
deleted file mode 100644
index b0770df..0000000
--- a/src/tss/Dockerfile-local
+++ /dev/null
@@ -1,24 +0,0 @@
-FROM rust:1.38
-
-RUN rustup default nightly-2019-08-28 && \
-    cargo --version && \
-    apt-get update && \
-    apt-get install -y curl build-essential git openssl pkg-config libssl-dev libgmp3-dev
-
-WORKDIR /tss
-
-COPY ./multi-party-ecdsa/Cargo.lock ./multi-party-ecdsa/Cargo.toml /tss/
-COPY ./multi-party-ecdsa/src/lib.rs /tss/src/lib.rs
-
-# Download all dependencies
-RUN cargo fetch
-
-# Build dependencies
-RUN cargo build --release || true
-
-COPY ./multi-party-ecdsa /tss/
-
-# Build final executables
-RUN cargo build --release
-
-CMD echo Done
diff --git a/tests/init.sh b/tests/init.sh
index 94da659..860ec1b 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -3,12 +3,8 @@
 set -e
 set -v
 
-docker build -t tss -f ./src/tss/Dockerfile-local ./src/tss
 ./demo/start-environment.sh
 echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
-./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
-./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
 ./src/test-services/binanceSend/run.sh tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l 100 0.1
 ./src/test-services/binanceSend/run.sh tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym 100 0.1
 ./src/test-services/binanceSend/run.sh tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4 100 0.1

From 312004128a66bf1b2aa3d77f28a695df718555de Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 24 Oct 2019 16:24:18 +0300
Subject: [PATCH 015/129] Updated scripts to store ganache data in docker
 volumes

---
 .circleci/config.yml      |  4 ++++
 demo/clean.sh             |  6 ++----
 demo/start-environment.sh | 23 +++++++----------------
 3 files changed, 13 insertions(+), 20 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1c46009..249ba35 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -17,6 +17,7 @@ jobs:
           version: 18.09.3
           docker_layer_caching: true
       - run: docker build -t tss ./src/tss
+      - run: mkdir ./workspace
       - run: docker save tss | gzip ./workspace/tss.tar.gz
       - persist_to_workspace:
           root: ./workspace
@@ -38,6 +39,7 @@ jobs:
       - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
       - run: docker kill ganache_side ganache_home
       - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
+      - run: mkdir ./workspace
       - run: docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
       - run: docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
       - run: docker kill tmp
@@ -59,6 +61,8 @@ jobs:
           docker_layer_caching: true
       - run: docker load -i ./workspace/tss.tar.gz
       - run: docker images
+      - run: docker volume create ganache_side_data
+      - run: docker volume create ganache_home_data
       - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
       - run: docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
       - run: docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
diff --git a/demo/clean.sh b/demo/clean.sh
index b6c7c54..1044917 100755
--- a/demo/clean.sh
+++ b/demo/clean.sh
@@ -10,10 +10,8 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 echo "Cleaning $TARGET_NETWORK network"
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
-  rm -rf ganache_side_db
-  rm -rf ganache_home_db
-  mkdir ganache_side_db
-  mkdir ganache_home_db
+  docker volume rm ganache_side_data > /dev/null 2>&1 || true
+  docker volume rm ganache_home_data > /dev/null 2>&1 || true
 fi
 
 for (( I = 1; I < 4; ++I )); do
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 3747465..788c5a1 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -12,15 +12,13 @@ DEPLOY_DIR="`pwd`/src/deploy"
 TEST_SERVICES_DIR="`pwd`/src/test-services"
 DEMO_DIR="`pwd`/demo"
 
-SIDE_GANACHE_DB="$DEMO_DIR/ganache_side_db"
-HOME_GANACHE_DB="$DEMO_DIR/ganache_home_db"
-
 start_dev_blockchain_networks() {
   echo "Starting side test blockchain"
 
   docker kill ganache_side > /dev/null 2>&1 || true
   docker network create blockchain_side > /dev/null 2>&1 || true
-  docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" -v "$SIDE_GANACHE_DB:/app/db" \
+  docker volume create ganache_side_data > /dev/null 2>&1 || true
+  docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" \
       -p "7545:8545" \
       trufflesuite/ganache-cli:latest \
       -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
@@ -29,7 +27,8 @@ start_dev_blockchain_networks() {
 
   docker kill ganache_home > /dev/null 2>&1 || true
   docker network create blockchain_home > /dev/null 2>&1 || true
-  docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" -v "$HOME_GANACHE_DB:/app/db" \
+  docker volume create ganache_home_data > /dev/null 2>&1 || true
+  docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" \
       -p "8545:8545" \
       trufflesuite/ganache-cli:latest \
       -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
@@ -135,20 +134,12 @@ deploy_all() {
 
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
-  if [[ ! -d "$SIDE_GANACHE_DB" ]]; then
-    mkdir "$SIDE_GANACHE_DB"
-  fi
 
-  if [[ ! -d "$HOME_GANACHE_DB" ]]; then
-    mkdir "$HOME_GANACHE_DB"
-  fi
-
-
-  if [[ -z "$(ls -A "$SIDE_GANACHE_DB")" ]] || [[ -z "$(ls -A "$HOME_GANACHE_DB")" ]]; then
+  if [[ "$(docker volume ls | grep ganache_side_db)" ]] || [[ "$(docker volume ls | grep ganache_home_db)" ]]; then
+    echo "Restarting dev blockchain networks"
+  else
     echo "Starting dev blockchain networks and deploying contracts"
     need_to_deploy=true
-  else
-    echo "Restarting dev blockchain networks"
   fi
 
   start_dev_blockchain_networks

From 0b3c1c851c900079d0d224b41b4b27502f3b70e6 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 24 Oct 2019 16:41:45 +0300
Subject: [PATCH 016/129] Small fixes in config

---
 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 249ba35..2870f16 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -18,7 +18,7 @@ jobs:
           docker_layer_caching: true
       - run: docker build -t tss ./src/tss
       - run: mkdir ./workspace
-      - run: docker save tss | gzip ./workspace/tss.tar.gz
+      - run: docker save tss | gzip > ./workspace/tss.tar.gz
       - persist_to_workspace:
           root: ./workspace
           paths:
@@ -38,7 +38,7 @@ jobs:
       - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
       - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
       - run: docker kill ganache_side ganache_home
-      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
+      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
       - run: mkdir ./workspace
       - run: docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
       - run: docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"

From 7aeaf94627ce1c363ff0630f125caf63cef4e92d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 24 Oct 2019 23:45:25 +0300
Subject: [PATCH 017/129] Refactored config, tests scripts files

---
 .circleci/config.yml | 157 +++++++++++++++++++++++++++++--------------
 tests/init.sh        |  13 ++--
 tests/run.sh         |   2 +-
 3 files changed, 117 insertions(+), 55 deletions(-)
 mode change 100755 => 100644 tests/init.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2870f16..e2d2e53 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -7,70 +7,129 @@ orbs:
           - image: circleci/node:10.15
         environment:
           TARGET_NETWORK: development
+    commands:
+      fetch_repo:
+        description: "Checkout and init submodules"
+        steps:
+          - checkout
+          - run:
+              name: "Initializing submodules"
+              command: git submodule update --init
+      setup_docker:
+        description: "Set up remote docker engine"
+        steps:
+          - setup_remote_docker:
+              version: 18.09.3
+              docker_layer_caching: true
+      save_ganache_data:
+        description: "Save dev environment in workspace"
+        steps:
+          - run:
+              name: "Backup blockchains data using temporary container"
+              command: |
+                mkdir ./workspace
+                docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
+                docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
+                docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
+                docker kill tmp
+          - persist_to_workspace:
+              root: ./workspace
+              paths:
+                - ganache_side_data
+                - ganache_home_data
+      restore_ganache_data:
+        description: "Restore dev environment from workspace"
+        steps:
+          - run:
+              name: "Restore blockchains data from backup using temporary container"
+              command: |
+                docker volume create ganache_side_data
+                docker volume create ganache_home_data
+                docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
+                docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
+                docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
+                docker kill tmp
+      save_tss:
+        description: "Save tss image to workspace"
+        steps:
+          - run:
+              name: "Save tss image to archive"
+              command: |
+                mkdir ./workspace
+                docker save tss | gzip > ./workspace/tss.tar.gz
+          - persist_to_workspace:
+              root: ./workspace
+              paths:
+                - tss.tar.gz
+      load_tss:
+        description: "Load tss image from workspace"
+        steps:
+          - run:
+              name: "Load tss image from archive"
+              command: docker load -i ./workspace/tss.tar.gz
 jobs:
   init_tss:
     executor: bridge/node-dev
     steps:
-      - checkout
-      - run: git submodule update --init
-      - setup_remote_docker:
-          version: 18.09.3
-          docker_layer_caching: true
-      - run: docker build -t tss ./src/tss
-      - run: mkdir ./workspace
-      - run: docker save tss | gzip > ./workspace/tss.tar.gz
-      - persist_to_workspace:
-          root: ./workspace
-          paths:
-            - tss.tar.gz
-
+      - bridge/fetch_repo
+      - bridge/setup_docker
+      - run:
+          name: "Build tss image"
+          command: docker build -t tss ./src/tss
+      - bridge/save_tss
   init_blockchains:
     executor: bridge/node-dev
     steps:
-      - checkout
-      - run: git submodule update --init
-      - setup_remote_docker:
-          version: 18.09.3
-          docker_layer_caching: true
-      - run: ./demo/start-environment.sh
-      - run: touch ./src/test-services/.keys.$TARGET_NETWORK
-      - run: ./src/test-services/ethereumSend/run.sh 0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xf7ca4aed1795e424433498cef43f6a3825c88731 100
-      - run: ./src/test-services/ethereumSend/run.sh 0xad6c8127143032d843a260c5d379d8d9b3d51f15 100
-      - run: docker kill ganache_side ganache_home
-      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
-      - run: mkdir ./workspace
-      - run: docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
-      - run: docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
-      - run: docker kill tmp
-      - persist_to_workspace:
-          root: ./workspace
-          paths:
-              - ganache_side_data
-              - ganache_home_data
-
+      - bridge/fetch_repo
+      - bridge/setup_docker
+      - run:
+          name: "Stub .keys file"
+          command: touch ./src/test-services/.keys.$TARGET_NETWORK
+      - run:
+          name: "Run dev environment, deploy contracts, prefund accounts"
+          command: |
+            ./demo/start-environment.sh
+            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
+      - run:
+          name: "Stop dev environment"
+          command: docker kill ganache_side ganache_home
+      - bridge/save_ganache_data
   run_tests:
     executor: bridge/node-dev
     steps:
-      - checkout
-      - run: git submodule update --init
+      - bridge/fetch_repo
+      - bridge/setup_docker
       - attach_workspace:
           at: ./workspace
-      - setup_remote_docker:
-          version: 18.09.3
-          docker_layer_caching: true
-      - run: docker load -i ./workspace/tss.tar.gz
-      - run: docker images
-      - run: docker volume create ganache_side_data
-      - run: docker volume create ganache_home_data
-      - run: docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -d --name tmp alpine:3.9.4
-      - run: docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
-      - run: docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
-      - run: docker kill tmp
+      - bridge/load_tss
+      - bridge/restore_ganache_data
       - run:
-          command: ./tests/init.sh
+          name: "Init tests environment"
+          command: |
+            ./demo/start-environment.sh
+            echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
+            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
+            N=1 ./demo/validator-demo.sh -d
+            N=2 ./demo/validator-demo.sh -d
+            N=3 ./demo/validator-demo.sh -d
+      - run:
+          name: "Wait until validator nodes are ready"
+          command: |
+            until curl -X GET http://localhost:5001 > /dev/null 2>&1; do sleep 1; done
+            until curl -X GET http://localhost:5002 > /dev/null 2>&1; do sleep 1; done
+            until curl -X GET http://localhost:5003 > /dev/null 2>&1; do sleep 1; done
+      - run:
+          name: "Build and prepare tests container"
+          command: |
+            docker build -t tests ./tests
+            docker create --rm -e HOME_RPC_URL --name tests tests $@
+            docker network connect blockchain_side tests
+            docker network connect blockchain_home tests
           environment:
             HOME_RPC_URL: 'http://ganache_home:8545'
+      - run:
+          name: "Run tests"
+          command: docker start tests
 workflows:
   version: 2
   main:
diff --git a/tests/init.sh b/tests/init.sh
old mode 100755
new mode 100644
index 860ec1b..35b7742
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,14 +1,17 @@
 #!/bin/bash
 
 set -e
-set -v
 
 ./demo/start-environment.sh
+
 echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-./src/test-services/binanceSend/run.sh tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l 100 0.1
-./src/test-services/binanceSend/run.sh tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym 100 0.1
-./src/test-services/binanceSend/run.sh tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4 100 0.1
+
+cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
+
 N=1 ./demo/validator-demo.sh -d
 N=2 ./demo/validator-demo.sh -d
 N=3 ./demo/validator-demo.sh -d
-sleep 10
+
+until curl -X GET http://localhost:5001 > /dev/null 2>&1; do sleep 1; done
+until curl -X GET http://localhost:5002 > /dev/null 2>&1; do sleep 1; done
+until curl -X GET http://localhost:5003 > /dev/null 2>&1; do sleep 1; done
diff --git a/tests/run.sh b/tests/run.sh
index d49f770..59fdd2f 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -3,6 +3,6 @@
 set -e
 set -v
 
-docker build -t tests . > /dev/null
+docker build -t tests ./tests
 
 docker run --network blockchain_home --rm -e HOME_RPC_URL tests $@

From 13c073469177d722d1890f197cc55c8162a88dbf Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 27 Oct 2019 19:21:36 +0300
Subject: [PATCH 018/129] First wokring tests set

---
 .circleci/config.yml                | 20 +++++++---
 demo/start-environment.sh           |  2 +-
 tests/.mocharc.yml                  |  3 ++
 tests/Dockerfile                    |  6 ++-
 tests/init.sh                       |  4 +-
 tests/package.json                  |  5 ++-
 tests/run.sh                        | 25 +++++++++++-
 tests/test/ethToBnc.js              | 51 +++++++++++++++++++++++++
 tests/test/index.js                 | 36 ++++++++++++++----
 tests/test/utils/bncClient.js       | 42 ++++++++++++++++++++
 tests/test/utils/bncController.js   | 29 ++++++++++++++
 tests/test/utils/homeContracts.js   | 24 ++++++++++++
 tests/test/utils/proxyController.js | 31 +++++++++++++++
 tests/test/utils/user.js            | 59 +++++++++++++++++++++++++++++
 tests/test/utils/wait.js            | 25 ++++++++++++
 15 files changed, 340 insertions(+), 22 deletions(-)
 create mode 100644 tests/.mocharc.yml
 mode change 100644 => 100755 tests/init.sh
 create mode 100644 tests/test/ethToBnc.js
 create mode 100644 tests/test/utils/bncClient.js
 create mode 100644 tests/test/utils/bncController.js
 create mode 100644 tests/test/utils/homeContracts.js
 create mode 100644 tests/test/utils/proxyController.js
 create mode 100644 tests/test/utils/user.js
 create mode 100644 tests/test/utils/wait.js

diff --git a/.circleci/config.yml b/.circleci/config.yml
index e2d2e53..5f30c5f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -94,6 +94,11 @@ jobs:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
       - bridge/save_ganache_data
+      - run:
+          name: "Prefund bnc addresses"
+          command: |
+            echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
+            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
   run_tests:
     executor: bridge/node-dev
     steps:
@@ -107,17 +112,15 @@ jobs:
           name: "Init tests environment"
           command: |
             ./demo/start-environment.sh
-            echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
       - run:
           name: "Wait until validator nodes are ready"
           command: |
-            until curl -X GET http://localhost:5001 > /dev/null 2>&1; do sleep 1; done
-            until curl -X GET http://localhost:5002 > /dev/null 2>&1; do sleep 1; done
-            until curl -X GET http://localhost:5003 > /dev/null 2>&1; do sleep 1; done
+            docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+            docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+            docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
       - run:
           name: "Build and prepare tests container"
           command: |
@@ -125,11 +128,16 @@ jobs:
             docker create --rm -e HOME_RPC_URL --name tests tests $@
             docker network connect blockchain_side tests
             docker network connect blockchain_home tests
+            docker network connect validator1_test_network tests
+            docker network connect validator2_test_network tests
+            docker network connect validator3_test_network tests
           environment:
             HOME_RPC_URL: 'http://ganache_home:8545'
       - run:
           name: "Run tests"
-          command: docker start tests
+          command: |
+            docker start -a tests
+            docker cp "tests:/tests/results.xml" "./tests/results.xml"
 workflows:
   version: 2
   main:
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 788c5a1..111446d 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -135,7 +135,7 @@ deploy_all() {
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
 
-  if [[ "$(docker volume ls | grep ganache_side_db)" ]] || [[ "$(docker volume ls | grep ganache_home_db)" ]]; then
+  if [[ "$(docker volume ls | grep ganache_side_data)" ]] || [[ "$(docker volume ls | grep ganache_home_data)" ]]; then
     echo "Restarting dev blockchain networks"
   else
     echo "Starting dev blockchain networks and deploying contracts"
diff --git a/tests/.mocharc.yml b/tests/.mocharc.yml
new file mode 100644
index 0000000..82c1ba6
--- /dev/null
+++ b/tests/.mocharc.yml
@@ -0,0 +1,3 @@
+reporter: spec
+reporter-option:
+  - mochaFile=./results.xml
diff --git a/tests/Dockerfile b/tests/Dockerfile
index 8acf8e4..2400a1b 100644
--- a/tests/Dockerfile
+++ b/tests/Dockerfile
@@ -2,13 +2,15 @@ FROM node:10.16.0-alpine
 
 WORKDIR /tests
 
-RUN npm install -g mocha
+RUN npm install -g mocha mocha-junit-reporter
+
+RUN apk update && apk add libssl1.1 eudev-dev libressl-dev curl build-base python linux-headers libusb-dev
 
 COPY ./package.json .
 
 RUN npm install
 
-COPY config.json ./
+COPY config.json .mocharc.yml ./
 COPY test ./test
 
 ENTRYPOINT ["mocha"]
diff --git a/tests/init.sh b/tests/init.sh
old mode 100644
new mode 100755
index 35b7742..e9831b3
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 
 set -e
+set -v
 
 ./demo/start-environment.sh
 
-echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-
+cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
 cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
 
 N=1 ./demo/validator-demo.sh -d
diff --git a/tests/package.json b/tests/package.json
index 3941246..de759d4 100644
--- a/tests/package.json
+++ b/tests/package.json
@@ -2,6 +2,9 @@
   "name": "tests",
   "version": "0.0.1",
   "dependencies": {
-    "web3": "1.0.0-beta.55"
+    "ethers": "4.0.38",
+    "axios": "0.19.0",
+    "@binance-chain/javascript-sdk": "2.16.1",
+    "bignumber.js": "9.0.0"
   }
 }
diff --git a/tests/run.sh b/tests/run.sh
index 59fdd2f..b78d747 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -1,8 +1,29 @@
 #!/bin/bash
 
 set -e
-set -v
 
 docker build -t tests ./tests
 
-docker run --network blockchain_home --rm -e HOME_RPC_URL tests $@
+set -a
+source ./demo/validator1/.env.development
+set +a
+
+docker rm tests || true
+docker create --name tests \
+    -e HOME_RPC_URL \
+    -e FOREIGN_URL \
+    -e HOME_BRIDGE_ADDRESS \
+    -e HOME_TOKEN_ADDRESS \
+    -e FOREIGN_PRIVATE_KEY \
+    -e FOREIGN_ASSET \
+    tests $@
+
+docker network connect blockchain_home tests
+docker network connect validator1_test_network tests
+docker network connect validator2_test_network tests
+docker network connect validator3_test_network tests
+
+docker start -a tests || true
+
+docker cp "tests:/tests/results.xml" "./tests/results.xml" || true
+docker rm tests || true
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
new file mode 100644
index 0000000..09bc2c5
--- /dev/null
+++ b/tests/test/ethToBnc.js
@@ -0,0 +1,51 @@
+const assert = require('assert')
+const createUser = require('./utils/user')
+const { getSequence } = require('./utils/bncController')
+const { waitPromise, delay } = require('./utils/wait')
+
+const usersConfig = require('../config').users
+
+const { HOME_BRIDGE_ADDRESS } = process.env
+
+module.exports = (foreignBridgeAddress) => {
+  describe('exchanges tokens in eth => bnc direction', function () {
+    let ethBalances
+    let bncBalances
+    let bncBridgeSequence
+    let users
+
+    before(async function () {
+      this.timeout(60000)
+      users = await usersConfig.seqMap(user => createUser(user.privateKey))
+      ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
+      bncBalances = await users.seqMap(user => user.getBncBalance())
+
+      bncBridgeSequence = await getSequence(foreignBridgeAddress())
+      await Promise.all(users.map((user, i) => user.approveEth(HOME_BRIDGE_ADDRESS, 5 + i)))
+    })
+
+    it('should accept exchange requests', async function () {
+      this.timeout(60000)
+      await Promise.all(users.map((user, i) => user.exchangeEth(5 + i)))
+      const newEthBalances = await Promise.all(users.map(user => user.getEthBalance()))
+      for (let i = 0; i < 3; i++) {
+        assert(newEthBalances[i] === ethBalances[i] - 5 - i, `Balance of ${usersConfig[i].ethAddress} did not updated as expected`)
+      }
+      ethBalances = newEthBalances
+    })
+
+    it('should make exchange transaction on bnc side', async function () {
+      this.timeout(300000)
+      await waitPromise(() => getSequence(foreignBridgeAddress()), sequence => sequence === bncBridgeSequence + 1)
+    })
+
+    it('should make correct exchange transaction', async function () {
+      this.timeout(60000)
+      const newBncBalances = await Promise.all(users.map(user => user.getBncBalance()))
+      for (let i = 0; i < 3; i++) {
+        assert(newBncBalances[i] === bncBalances[i] + 5 + i, `Balance of ${usersConfig[i].bncAddress} did not updated as expected`)
+      }
+      bncBalances = newBncBalances
+    })
+  })
+}
diff --git a/tests/test/index.js b/tests/test/index.js
index b6f7c8a..6b8e518 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -1,12 +1,32 @@
-const Web3 = require('web3')
-const { users } = require('../config')
+const createController = require('./utils/proxyController')
+const createUser = require('./utils/user')
+const { waitPromise } = require('./utils/wait')
 
-const web3 = new Web3(process.env.HOME_RPC_URL)
+const testEthToBnc = require('./ethToBnc')
 
-describe('check balance', function () {
-  it('should have correct balance', async function () {
-    const balance = await web3.eth.getBalance(users[0].ethAddress)
-    console.log(balance.toNumber())
-    return 0
+const { FOREIGN_PRIVATE_KEY } = process.env
+
+let user
+
+let { getInfo } = createController(1)
+
+let info
+
+describe('generates initial epoch keys', function () {
+  before(async function () {
+    this.timeout(60000)
+    user = await createUser(FOREIGN_PRIVATE_KEY)
+  })
+
+  it('should generate keys in 2 min', async function () {
+    this.timeout(120000)
+    info = await waitPromise(getInfo, info => info.epoch === 1)
+  })
+
+  after(async function () {
+    this.timeout(60000)
+    await user.transferBnc(info.foreignBridgeAddress, 50, 0.1)
   })
 })
+
+testEthToBnc(() => info.foreignBridgeAddress)
diff --git a/tests/test/utils/bncClient.js b/tests/test/utils/bncClient.js
new file mode 100644
index 0000000..4396b53
--- /dev/null
+++ b/tests/test/utils/bncClient.js
@@ -0,0 +1,42 @@
+const Bnc = require('@binance-chain/javascript-sdk')
+
+const { delay } = require('./wait')
+
+const { FOREIGN_URL, FOREIGN_ASSET } = process.env
+
+module.exports = async function main (privateKey) {
+  const client = new Bnc(FOREIGN_URL)
+  client.chooseNetwork('testnet')
+
+  await client.setPrivateKey(privateKey)
+
+  await client.initChain()
+  const from = client.getClientKeyAddress()
+
+  await delay(1000)
+
+  return {
+    transfer: async function (to, tokens, bnbs) {
+      const outputs = [{
+        to,
+        coins: []
+      }]
+      if (tokens) {
+        outputs[0].coins.push({
+          denom: FOREIGN_ASSET,
+          amount: tokens
+        })
+      }
+      if (bnbs) {
+        outputs[0].coins.push({
+          denom: 'BNB',
+          amount: bnbs
+        })
+      }
+      await client.multiSend(from, outputs, 'funding')
+    },
+    exchange: async function (to, value) {
+      await client.transfer(from, to, value.toString(), FOREIGN_ASSET, 'exchange')
+    }
+  }
+}
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
new file mode 100644
index 0000000..589b4a4
--- /dev/null
+++ b/tests/test/utils/bncController.js
@@ -0,0 +1,29 @@
+const axios = require('axios')
+
+const { FOREIGN_URL, FOREIGN_ASSET } = process.env
+
+const bnc = axios.create({
+  baseURL: FOREIGN_URL,
+  timeout: 5000
+})
+
+module.exports = {
+  getBalance: async function (address) {
+    try {
+      const response = await bnc.get(`/api/v1/account/${address}`)
+
+      return parseFloat(response.data.balances.find(x => x.symbol === FOREIGN_ASSET).free)
+    } catch (e) {
+      return 0
+    }
+  },
+  getSequence: async function(address) {
+    try {
+      const response = await bnc.get(`/api/v1/account/${address}/sequence`)
+
+      return response.data.sequence
+    } catch (e) {
+      return 0
+    }
+  }
+}
diff --git a/tests/test/utils/homeContracts.js b/tests/test/utils/homeContracts.js
new file mode 100644
index 0000000..6912273
--- /dev/null
+++ b/tests/test/utils/homeContracts.js
@@ -0,0 +1,24 @@
+const ethers = require('ethers')
+
+const { HOME_RPC_URL, HOME_TOKEN_ADDRESS, HOME_BRIDGE_ADDRESS } = process.env
+
+const abiToken = [
+  'function balanceOf(address account) view returns (uint)',
+  'function transfer(address to, uint value)',
+  'function approve(address to, uint value)',
+  'function allowance(address owner, address spender) view returns (uint)'
+]
+const abiBridge = [
+  'function exchange(uint value)'
+]
+
+const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+
+const tokenContract = new ethers.Contract(HOME_TOKEN_ADDRESS, abiToken, provider)
+const bridgeContract = new ethers.Contract(HOME_BRIDGE_ADDRESS, abiBridge, provider)
+
+module.exports = {
+  tokenContract,
+  bridgeContract,
+  provider
+}
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
new file mode 100644
index 0000000..1000a5a
--- /dev/null
+++ b/tests/test/utils/proxyController.js
@@ -0,0 +1,31 @@
+const axios = require('axios')
+
+module.exports = function (validatorId) {
+  const url = `http://validator${validatorId}_proxy_1:8002/`
+
+  const proxy = axios.create({
+    baseURL: url,
+    timeout: 5000
+  })
+
+  return {
+    getInfo: async function () {
+      return (await proxy.get('/info')).data
+    },
+    voteStartVoting: async function () {
+      return (await proxy.get('/vote/startVoting')).data
+    },
+    voteStartKeygen: async function () {
+      return (await proxy.get('/vote/startKeygen')).data
+    },
+    voteAddValidator: async function (validatorAddress) {
+      return (await proxy.get(`/vote/addValidator/${validatorAddress}`)).data
+    },
+    voteRemoveValidator: async function (validatorAddress) {
+      return (await proxy.get(`/vote/removeValidator/${validatorAddress}`)).data
+    },
+    voteChangeThreshold: async function (threshold) {
+      return (await proxy.get(`/vote/changeThreshold/${threshold}`)).data
+    }
+  }
+}
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
new file mode 100644
index 0000000..da7dde2
--- /dev/null
+++ b/tests/test/utils/user.js
@@ -0,0 +1,59 @@
+const ethers = require('ethers')
+const BN = require('bignumber.js')
+const { getAddressFromPrivateKey } = require('@binance-chain/javascript-sdk/lib/crypto')
+
+const createBncClient = require('./bncClient')
+const { getBalance } = require('./bncController')
+const { tokenContract, bridgeContract, provider } = require('./homeContracts')
+const { delay } = require('./wait')
+
+const txOptions = {
+  gasLimit: 200000
+}
+
+module.exports = async function (privateKey) {
+  const wallet = new ethers.Wallet(privateKey, provider)
+  const ethAddress = wallet.address
+  const bncAddress = getAddressFromPrivateKey(privateKey)
+  const token = tokenContract.connect(wallet)
+  const bridge = bridgeContract.connect(wallet)
+
+  const bncClient = await createBncClient(privateKey)
+
+  return {
+    getEthBalance: async function () {
+      const balance = await token.balanceOf(ethAddress)
+      return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
+    },
+    transferEth: async function (to, value) {
+      const tx = await token.transfer(to, '0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+      await tx.wait()
+    },
+    approveEth: async function (to, value) {
+      console.log('approving', to, value)
+      const tx = await token.approve(to, '0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+      console.log('sent', tx)
+      await tx.wait()
+      console.log('done')
+      console.log(await token.allowance(ethAddress, to))
+    },
+    exchangeEth: async function (value) {
+      console.log(value)
+      const tx = await bridge.exchange('0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+      console.log(tx)
+      await tx.wait()
+      console.log('done')
+    },
+    getBncBalance: async function () {
+      const balance = await getBalance(bncAddress)
+      await delay(1000)
+      return balance
+    },
+    transferBnc: async function (bridgeAddress, tokens, bnbs) {
+      return await bncClient.transfer(bridgeAddress, tokens, bnbs)
+    },
+    exchangeBnc: async function (bridgeAddress, value) {
+      return await bncClient.exchange(bridgeAddress, value)
+    }
+  }
+}
diff --git a/tests/test/utils/wait.js b/tests/test/utils/wait.js
new file mode 100644
index 0000000..733d9f4
--- /dev/null
+++ b/tests/test/utils/wait.js
@@ -0,0 +1,25 @@
+async function delay(ms) {
+  await new Promise(res => setTimeout(res, ms))
+}
+
+async function waitPromise (getPromise, checker) {
+  do {
+    const result = await getPromise()
+    if (checker(result))
+      return result
+    await delay(1000)
+  } while (true)
+}
+
+Array.prototype.seqMap = async function (transition) {
+  const results = []
+  for (let i = 0; i < this.length; i++) {
+    results[i] = await transition(this[i])
+  }
+  return results
+}
+
+module.exports = {
+  waitPromise,
+  delay
+}

From 876f09f3126d21a167a23518018db717cdc4851d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 15:47:07 +0300
Subject: [PATCH 019/129] Bnc to eth tests, artifacts processing in circleci
 config

---
 .circleci/config.yml       | 40 ++++++++++++++++++++++++++++++++-----
 .gitignore                 |  1 +
 demo/start-environment.sh  |  5 +++--
 tests/.env                 |  7 +++++++
 tests/.mocharc.yml         |  4 ++--
 tests/Dockerfile           |  4 ++--
 tests/reportersConfig.json |  6 ++++++
 tests/run.sh               | 16 ++++-----------
 tests/test/bncToEth.js     | 32 +++++++++++++++++++++++++++++
 tests/test/ethToBnc.js     | 19 +++++++++---------
 tests/test/index.js        | 41 ++++++++++++++++++++++++--------------
 tests/test/utils/user.js   |  7 -------
 12 files changed, 127 insertions(+), 55 deletions(-)
 create mode 100644 tests/.env
 create mode 100644 tests/reportersConfig.json
 create mode 100644 tests/test/bncToEth.js

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5f30c5f..ae86bb8 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -67,6 +67,22 @@ orbs:
           - run:
               name: "Load tss image from archive"
               command: docker load -i ./workspace/tss.tar.gz
+      save_docker_logs:
+        description: "A very simple command for demonstration purposes"
+        parameters:
+          validator:
+            type: integer
+            default: 1
+        steps:
+          - run: |
+              mkdir -p ./artifacts/logs/validator<< parameters.validator >>
+              docker logs validator<< parameters.validator >>_rabbitmq_1 ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
+              docker logs validator<< parameters.validator >>_redis_1 ./artifacts/logs/validator<< parameters.validator >>/redis.log
+              docker logs validator<< parameters.validator >>_proxy_1 ./artifacts/logs/validator<< parameters.validator >>/proxy.log
+              docker logs validator<< parameters.validator >>_eth-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
+              docker logs validator<< parameters.validator >>_bnc-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
+              docker logs validator<< parameters.validator >>_signer_1 ./artifacts/logs/validator<< parameters.validator >>/signer.log
+              docker logs validator<< parameters.validator >>_keygen_1 ./artifacts/logs/validator<< parameters.validator >>/keygen.log
 jobs:
   init_tss:
     executor: bridge/node-dev
@@ -88,7 +104,7 @@ jobs:
       - run:
           name: "Run dev environment, deploy contracts, prefund accounts"
           command: |
-            ./demo/start-environment.sh
+            BLOCK_TIME=1 ./demo/start-environment.sh
             cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
       - run:
           name: "Stop dev environment"
@@ -111,7 +127,7 @@ jobs:
       - run:
           name: "Init tests environment"
           command: |
-            ./demo/start-environment.sh
+            BLOCK_TIME=3 ./demo/start-environment.sh
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
@@ -125,7 +141,7 @@ jobs:
           name: "Build and prepare tests container"
           command: |
             docker build -t tests ./tests
-            docker create --rm -e HOME_RPC_URL --name tests tests $@
+            docker create --rm --env-file ./tests/.env -e FOREIGN_PRIVATE_KEY --name tests tests
             docker network connect blockchain_side tests
             docker network connect blockchain_home tests
             docker network connect validator1_test_network tests
@@ -135,9 +151,23 @@ jobs:
             HOME_RPC_URL: 'http://ganache_home:8545'
       - run:
           name: "Run tests"
+          command: docker start -a tests
+      - run:
+          name: "Save tests results"
           command: |
-            docker start -a tests
-            docker cp "tests:/tests/results.xml" "./tests/results.xml"
+            mkdir -p ./artifacts/test_results/mocha
+            docker cp "tests:/tests/results.xml" "./artifacts/test_results/mocha/results.xml"
+          when: always
+      - store_test_results:
+          path: ./artifacts/test_results/mocha
+      - bridge/save_docker_logs:
+          validator: 1
+      - bridge/save_docker_logs:
+          validator: 2
+      - bridge/save_docker_logs:
+          validator: 3
+      - store_artifacts:
+          path: ./artifacts
 workflows:
   version: 2
   main:
diff --git a/.gitignore b/.gitignore
index 1c85941..5d2cec0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ src/deploy/.keys.staging
 src/test-services/.keys.staging
 src/test-services/.keys.development
 test.js
+tests/results.xml
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 111446d..2a3b775 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -7,6 +7,7 @@ cd ..
 
 # either development or staging
 TARGET_NETWORK=${TARGET_NETWORK:=development}
+BLOCK_TIME=${BLOCK_TIME:=3}
 
 DEPLOY_DIR="`pwd`/src/deploy"
 TEST_SERVICES_DIR="`pwd`/src/test-services"
@@ -21,7 +22,7 @@ start_dev_blockchain_networks() {
   docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" \
       -p "7545:8545" \
       trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
+      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
 
   echo "Starting home test blockchain"
 
@@ -31,7 +32,7 @@ start_dev_blockchain_networks() {
   docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" \
       -p "8545:8545" \
       trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 -q --db /app/db -b 3 --noVMErrorsOnRPCResponse
+      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 -q --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
 
   sleep 4
 }
diff --git a/tests/.env b/tests/.env
new file mode 100644
index 0000000..004c1d0
--- /dev/null
+++ b/tests/.env
@@ -0,0 +1,7 @@
+HOME_RPC_URL=http://ganache_home:8545
+HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
+HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
+
+FOREIGN_URL=https://testnet-dex.binance.org/
+FOREIGN_CHAIN_ID=Binance-Chain-Nile
+FOREIGN_ASSET=KFT-94F
diff --git a/tests/.mocharc.yml b/tests/.mocharc.yml
index 82c1ba6..b43d42d 100644
--- a/tests/.mocharc.yml
+++ b/tests/.mocharc.yml
@@ -1,3 +1,3 @@
-reporter: spec
+reporter: mocha-multi-reporters
 reporter-option:
-  - mochaFile=./results.xml
+  - configFile=./reportersConfig.json
diff --git a/tests/Dockerfile b/tests/Dockerfile
index 2400a1b..118d266 100644
--- a/tests/Dockerfile
+++ b/tests/Dockerfile
@@ -2,7 +2,7 @@ FROM node:10.16.0-alpine
 
 WORKDIR /tests
 
-RUN npm install -g mocha mocha-junit-reporter
+RUN npm install -g mocha mocha-junit-reporter mocha-multi-reporters
 
 RUN apk update && apk add libssl1.1 eudev-dev libressl-dev curl build-base python linux-headers libusb-dev
 
@@ -10,7 +10,7 @@ COPY ./package.json .
 
 RUN npm install
 
-COPY config.json .mocharc.yml ./
+COPY config.json .mocharc.yml reportersConfig.json ./
 COPY test ./test
 
 ENTRYPOINT ["mocha"]
diff --git a/tests/reportersConfig.json b/tests/reportersConfig.json
new file mode 100644
index 0000000..47582db
--- /dev/null
+++ b/tests/reportersConfig.json
@@ -0,0 +1,6 @@
+{
+  "reporterEnabled": "spec, mocha-junit-reporter",
+  "mochaJunitReporterReporterOptions": {
+    "mochaFile": "./results.xml"
+  }
+}
diff --git a/tests/run.sh b/tests/run.sh
index b78d747..a4f7090 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -4,18 +4,10 @@ set -e
 
 docker build -t tests ./tests
 
-set -a
-source ./demo/validator1/.env.development
-set +a
-
-docker rm tests || true
+docker rm tests > /dev/null 2>&1 || true
 docker create --name tests \
-    -e HOME_RPC_URL \
-    -e FOREIGN_URL \
-    -e HOME_BRIDGE_ADDRESS \
-    -e HOME_TOKEN_ADDRESS \
+    --env-file ./tests/.env \
     -e FOREIGN_PRIVATE_KEY \
-    -e FOREIGN_ASSET \
     tests $@
 
 docker network connect blockchain_home tests
@@ -25,5 +17,5 @@ docker network connect validator3_test_network tests
 
 docker start -a tests || true
 
-docker cp "tests:/tests/results.xml" "./tests/results.xml" || true
-docker rm tests || true
+docker cp "tests:/tests/results.xml" "./tests/results.xml" > /dev/null 2>&1 || true
+docker rm tests > /dev/null 2>&1  || true
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
new file mode 100644
index 0000000..303ce4e
--- /dev/null
+++ b/tests/test/bncToEth.js
@@ -0,0 +1,32 @@
+const { delay } = require('./utils/wait')
+
+module.exports = (usersFunc, foreignBridgeAddressFunc) => {
+  describe('exchange of tokens in bnc => eth direction', function () {
+    let users
+    let foreignBridgeAddress
+    let ethBalances
+
+    before(async function () {
+      this.timeout(60000)
+      users = usersFunc()
+      foreignBridgeAddress = foreignBridgeAddressFunc()
+      ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
+
+      await Promise.all(users.map((user, i) => user.exchangeBnc(foreignBridgeAddress, 3 + i)))
+    })
+
+    it('should make coorect exchange transactions on eth side', async function () {
+      this.timeout(60000)
+      for (let i = 0; i < 3; i++) {
+        do {
+          const user = users[i]
+          const newEthBalance = await user.getEthBalance()
+          if (newEthBalance === ethBalances[i] + 3 + i) {
+            break
+          }
+          delay(500)
+        } while (true)
+      }
+    })
+  })
+}
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 09bc2c5..25a7fd3 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -1,26 +1,27 @@
 const assert = require('assert')
-const createUser = require('./utils/user')
 const { getSequence } = require('./utils/bncController')
-const { waitPromise, delay } = require('./utils/wait')
+const { waitPromise } = require('./utils/wait')
 
 const usersConfig = require('../config').users
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
-module.exports = (foreignBridgeAddress) => {
-  describe('exchanges tokens in eth => bnc direction', function () {
+module.exports = (usersFunc, foreignBridgeAddressFunc) => {
+  describe('exchange of tokens in eth => bnc direction', function () {
+    let users
+    let foreignBridgeAddress
     let ethBalances
     let bncBalances
     let bncBridgeSequence
-    let users
 
     before(async function () {
       this.timeout(60000)
-      users = await usersConfig.seqMap(user => createUser(user.privateKey))
+      users = usersFunc()
+      foreignBridgeAddress = foreignBridgeAddressFunc()
       ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
       bncBalances = await users.seqMap(user => user.getBncBalance())
 
-      bncBridgeSequence = await getSequence(foreignBridgeAddress())
+      bncBridgeSequence = await getSequence(foreignBridgeAddress)
       await Promise.all(users.map((user, i) => user.approveEth(HOME_BRIDGE_ADDRESS, 5 + i)))
     })
 
@@ -31,12 +32,11 @@ module.exports = (foreignBridgeAddress) => {
       for (let i = 0; i < 3; i++) {
         assert(newEthBalances[i] === ethBalances[i] - 5 - i, `Balance of ${usersConfig[i].ethAddress} did not updated as expected`)
       }
-      ethBalances = newEthBalances
     })
 
     it('should make exchange transaction on bnc side', async function () {
       this.timeout(300000)
-      await waitPromise(() => getSequence(foreignBridgeAddress()), sequence => sequence === bncBridgeSequence + 1)
+      await waitPromise(() => getSequence(foreignBridgeAddress), sequence => sequence === bncBridgeSequence + 1)
     })
 
     it('should make correct exchange transaction', async function () {
@@ -45,7 +45,6 @@ module.exports = (foreignBridgeAddress) => {
       for (let i = 0; i < 3; i++) {
         assert(newBncBalances[i] === bncBalances[i] + 5 + i, `Balance of ${usersConfig[i].bncAddress} did not updated as expected`)
       }
-      bncBalances = newBncBalances
     })
   })
 }
diff --git a/tests/test/index.js b/tests/test/index.js
index 6b8e518..a6dafec 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -3,30 +3,41 @@ const createUser = require('./utils/user')
 const { waitPromise } = require('./utils/wait')
 
 const testEthToBnc = require('./ethToBnc')
+const testBncToEth = require('./bncToEth')
+
+const usersConfig = require('../config').users
 
 const { FOREIGN_PRIVATE_KEY } = process.env
 
-let user
-
 let { getInfo } = createController(1)
 
-let info
+describe('bridge tests', function () {
+  let users
+  let foreignPrefundedUser
+  let info
 
-describe('generates initial epoch keys', function () {
-  before(async function () {
+  before(async function() {
     this.timeout(60000)
-    user = await createUser(FOREIGN_PRIVATE_KEY)
+    users = await usersConfig.seqMap(user => createUser(user.privateKey))
   })
 
-  it('should generate keys in 2 min', async function () {
-    this.timeout(120000)
-    info = await waitPromise(getInfo, info => info.epoch === 1)
+  describe('generation of initial epoch keys', function () {
+    before(async function () {
+      this.timeout(60000)
+      foreignPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
+    })
+
+    it('should generate keys', async function () {
+      this.timeout(120000)
+      info = await waitPromise(getInfo, info => info.epoch === 1)
+    })
+
+    after(async function () {
+      this.timeout(60000)
+      await foreignPrefundedUser.transferBnc(info.foreignBridgeAddress, 50, 0.1)
+    })
   })
 
-  after(async function () {
-    this.timeout(60000)
-    await user.transferBnc(info.foreignBridgeAddress, 50, 0.1)
-  })
+  testEthToBnc(() => users, () => info.foreignBridgeAddress)
+  testBncToEth(() => users, () => info.foreignBridgeAddress)
 })
-
-testEthToBnc(() => info.foreignBridgeAddress)
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
index da7dde2..c2889a3 100644
--- a/tests/test/utils/user.js
+++ b/tests/test/utils/user.js
@@ -30,19 +30,12 @@ module.exports = async function (privateKey) {
       await tx.wait()
     },
     approveEth: async function (to, value) {
-      console.log('approving', to, value)
       const tx = await token.approve(to, '0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
-      console.log('sent', tx)
       await tx.wait()
-      console.log('done')
-      console.log(await token.allowance(ethAddress, to))
     },
     exchangeEth: async function (value) {
-      console.log(value)
       const tx = await bridge.exchange('0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
-      console.log(tx)
       await tx.wait()
-      console.log('done')
     },
     getBncBalance: async function () {
       const balance = await getBalance(bncAddress)

From 927332634cfc5b9f8597b60388164d049bc22816 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 16:49:32 +0300
Subject: [PATCH 020/129] Updated config. Decreased no_output_timout for curl
 wait of validator

---
 .circleci/config.yml | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index ae86bb8..77ffdbb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -74,15 +74,18 @@ orbs:
             type: integer
             default: 1
         steps:
-          - run: |
-              mkdir -p ./artifacts/logs/validator<< parameters.validator >>
-              docker logs validator<< parameters.validator >>_rabbitmq_1 ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
-              docker logs validator<< parameters.validator >>_redis_1 ./artifacts/logs/validator<< parameters.validator >>/redis.log
-              docker logs validator<< parameters.validator >>_proxy_1 ./artifacts/logs/validator<< parameters.validator >>/proxy.log
-              docker logs validator<< parameters.validator >>_eth-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
-              docker logs validator<< parameters.validator >>_bnc-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
-              docker logs validator<< parameters.validator >>_signer_1 ./artifacts/logs/validator<< parameters.validator >>/signer.log
-              docker logs validator<< parameters.validator >>_keygen_1 ./artifacts/logs/validator<< parameters.validator >>/keygen.log
+          - run:
+              name: "Saving validator<< parameters.validator >> logs"
+              command: |
+                mkdir -p ./artifacts/logs/validator<< parameters.validator >>
+                docker logs validator<< parameters.validator >>_rabbitmq_1 ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
+                docker logs validator<< parameters.validator >>_redis_1 ./artifacts/logs/validator<< parameters.validator >>/redis.log
+                docker logs validator<< parameters.validator >>_proxy_1 ./artifacts/logs/validator<< parameters.validator >>/proxy.log
+                docker logs validator<< parameters.validator >>_eth-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
+                docker logs validator<< parameters.validator >>_bnc-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
+                docker logs validator<< parameters.validator >>_signer_1 ./artifacts/logs/validator<< parameters.validator >>/signer.log
+                docker logs validator<< parameters.validator >>_keygen_1 ./artifacts/logs/validator<< parameters.validator >>/keygen.log
+              when: always
 jobs:
   init_tss:
     executor: bridge/node-dev
@@ -137,6 +140,7 @@ jobs:
             docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
             docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
             docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+          no_output_timeout: 3m
       - run:
           name: "Build and prepare tests container"
           command: |
@@ -147,8 +151,6 @@ jobs:
             docker network connect validator1_test_network tests
             docker network connect validator2_test_network tests
             docker network connect validator3_test_network tests
-          environment:
-            HOME_RPC_URL: 'http://ganache_home:8545'
       - run:
           name: "Run tests"
           command: docker start -a tests
@@ -160,6 +162,7 @@ jobs:
           when: always
       - store_test_results:
           path: ./artifacts/test_results/mocha
+          when: always
       - bridge/save_docker_logs:
           validator: 1
       - bridge/save_docker_logs:
@@ -168,6 +171,7 @@ jobs:
           validator: 3
       - store_artifacts:
           path: ./artifacts
+          when: always
 workflows:
   version: 2
   main:

From 8c2864bac3e852f938da4426530730bdd0fe4966 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 17:23:16 +0300
Subject: [PATCH 021/129] Trying to find out why curl wait does not work on
 circleci

---
 .circleci/config.yml | 68 +++++++++++++++++++++++++-------------------
 1 file changed, 39 insertions(+), 29 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 77ffdbb..b99109b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -68,7 +68,7 @@ orbs:
               name: "Load tss image from archive"
               command: docker load -i ./workspace/tss.tar.gz
       save_docker_logs:
-        description: "A very simple command for demonstration purposes"
+        description: "Save docker logs"
         parameters:
           validator:
             type: integer
@@ -78,13 +78,34 @@ orbs:
               name: "Saving validator<< parameters.validator >> logs"
               command: |
                 mkdir -p ./artifacts/logs/validator<< parameters.validator >>
-                docker logs validator<< parameters.validator >>_rabbitmq_1 ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
-                docker logs validator<< parameters.validator >>_redis_1 ./artifacts/logs/validator<< parameters.validator >>/redis.log
-                docker logs validator<< parameters.validator >>_proxy_1 ./artifacts/logs/validator<< parameters.validator >>/proxy.log
-                docker logs validator<< parameters.validator >>_eth-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
-                docker logs validator<< parameters.validator >>_bnc-watcher_1 ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
-                docker logs validator<< parameters.validator >>_signer_1 ./artifacts/logs/validator<< parameters.validator >>/signer.log
-                docker logs validator<< parameters.validator >>_keygen_1 ./artifacts/logs/validator<< parameters.validator >>/keygen.log
+                docker logs validator<< parameters.validator >>_rabbitmq_1 > ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
+                docker logs validator<< parameters.validator >>_redis_1 > ./artifacts/logs/validator<< parameters.validator >>/redis.log
+                docker logs validator<< parameters.validator >>_proxy_1 >./artifacts/logs/validator<< parameters.validator >>/proxy.log
+                docker logs validator<< parameters.validator >>_eth-watcher_1 > ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
+                docker logs validator<< parameters.validator >>_bnc-watcher_1 > ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
+                docker logs validator<< parameters.validator >>_signer_1 > ./artifacts/logs/validator<< parameters.validator >>/signer.log
+                docker logs validator<< parameters.validator >>_keygen_1 > ./artifacts/logs/validator<< parameters.validator >>/keygen.log
+              when: always
+      save_artifacts:
+        description: "Save and upload tests results, save validator logs to artifacts"
+        steps:
+          - run:
+              name: "Save tests results"
+              command: |
+                mkdir -p ./artifacts/test_results/mocha
+                docker cp "tests:/tests/results.xml" "./artifacts/test_results/mocha/results.xml"
+              when: always
+          - store_test_results:
+              path: ./artifacts/test_results/mocha
+              when: always
+          - save_docker_logs:
+              validator: 1
+          - save_docker_logs:
+              validator: 2
+          - save_docker_logs:
+              validator: 3
+          - store_artifacts:
+              path: ./artifacts
               when: always
 jobs:
   init_tss:
@@ -134,13 +155,19 @@ jobs:
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
+            docker ps
       - run:
           name: "Wait until validator nodes are ready"
           command: |
-            docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
-            docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
-            docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+            mkdir ./clogs
+            docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog1 2>&1; do sleep 1; done"
+            docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog2 2>&1; do sleep 1; done"
+            docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog3 2>&1; do sleep 1; done"
           no_output_timeout: 3m
+      - store_artifacts:
+          path: ./clogs
+          destination: curl-logs
+          when: always
       - run:
           name: "Build and prepare tests container"
           command: |
@@ -154,24 +181,7 @@ jobs:
       - run:
           name: "Run tests"
           command: docker start -a tests
-      - run:
-          name: "Save tests results"
-          command: |
-            mkdir -p ./artifacts/test_results/mocha
-            docker cp "tests:/tests/results.xml" "./artifacts/test_results/mocha/results.xml"
-          when: always
-      - store_test_results:
-          path: ./artifacts/test_results/mocha
-          when: always
-      - bridge/save_docker_logs:
-          validator: 1
-      - bridge/save_docker_logs:
-          validator: 2
-      - bridge/save_docker_logs:
-          validator: 3
-      - store_artifacts:
-          path: ./artifacts
-          when: always
+      - bridge/save_artifacts
 workflows:
   version: 2
   main:

From 23ba4e86f69eddc1f5b55406a792e2a0cc3af802 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 17:55:47 +0300
Subject: [PATCH 022/129] Added saving of ganache logs into artifacts

---
 .circleci/config.yml | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index b99109b..c3c0b12 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -49,6 +49,12 @@ orbs:
                 docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
                 docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
                 docker kill tmp
+      restore_tss_image:
+        description: "Restores tss image from cache"
+        steps:
+          - restore_cache:
+              name: "Restore tss image from cache"
+              key: "tss-v1-{{ .Branch }}"
       save_tss:
         description: "Save tss image to workspace"
         steps:
@@ -58,9 +64,15 @@ orbs:
                 mkdir ./workspace
                 docker save tss | gzip > ./workspace/tss.tar.gz
           - persist_to_workspace:
+              name: "Save tss image to workspace"
               root: ./workspace
               paths:
                 - tss.tar.gz
+          - save_cache:
+              name: "Save tss image to cache"
+              paths:
+                - ./workspace/tss.tar.gz
+              key: "tss-v1-{{ .Branch }}"
       load_tss:
         description: "Load tss image from workspace"
         steps:
@@ -104,6 +116,13 @@ orbs:
               validator: 2
           - save_docker_logs:
               validator: 3
+          - run:
+              name: "Save ganache logs"
+              command: |
+                mkdir -p ./artifacts/logs/ganache
+                docker logs ganache_home > ./artifacts/logs/ganache/home.log
+                docker logs ganache_side > ./artifacts/logs/ganache/side.log
+              when: always
           - store_artifacts:
               path: ./artifacts
               when: always
@@ -113,9 +132,10 @@ jobs:
     steps:
       - bridge/fetch_repo
       - bridge/setup_docker
+      - bridge/restore_tss_image
       - run:
           name: "Build tss image"
-          command: docker build -t tss ./src/tss
+          command: docker build --cache-from tss -t tss ./src/tss || docker build -t tss ./src/tss
       - bridge/save_tss
   init_blockchains:
     executor: bridge/node-dev
@@ -159,15 +179,10 @@ jobs:
       - run:
           name: "Wait until validator nodes are ready"
           command: |
-            mkdir ./clogs
-            docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog1 2>&1; do sleep 1; done"
-            docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog2 2>&1; do sleep 1; done"
-            docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > ./clogs/clog3 2>&1; do sleep 1; done"
+            docker run --network validator1_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+            docker run --network validator2_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
+            docker run --network validator3_test_network --entrypoint ash appropriate/curl:latest -c "until curl -X GET http://proxy:8002/info > /dev/null 2>&1; do sleep 1; done"
           no_output_timeout: 3m
-      - store_artifacts:
-          path: ./clogs
-          destination: curl-logs
-          when: always
       - run:
           name: "Build and prepare tests container"
           command: |

From f8e8ea8fe57ead4c662f81691caaa4ce1f1a3603 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 18:55:09 +0300
Subject: [PATCH 023/129] Get rid of bind mounts in docker-compose for
 contracts

---
 .circleci/config.yml                     |     2 +-
 src/oracle/docker-compose-test.yml       |    13 +-
 src/oracle/docker-compose.yml            |    13 +-
 src/oracle/ethWatcher/Bridge.json        | 35243 +++++++++++++++++++++
 src/oracle/ethWatcher/Dockerfile         |     1 +
 src/oracle/proxy/Bridge.json             | 35243 +++++++++++++++++++++
 src/oracle/proxy/Dockerfile              |     1 +
 src/oracle/proxy/IERC20.json             |  1884 ++
 src/oracle/proxy/SharedDB.json           |  6274 ++++
 src/oracle/redis/Dockerfile              |     5 +
 src/oracle/{configs => redis}/redis.conf |     0
 11 files changed, 78660 insertions(+), 19 deletions(-)
 create mode 100644 src/oracle/ethWatcher/Bridge.json
 create mode 100644 src/oracle/proxy/Bridge.json
 create mode 100644 src/oracle/proxy/IERC20.json
 create mode 100644 src/oracle/proxy/SharedDB.json
 create mode 100644 src/oracle/redis/Dockerfile
 rename src/oracle/{configs => redis}/redis.conf (100%)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index c3c0b12..24d16e7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -92,7 +92,7 @@ orbs:
                 mkdir -p ./artifacts/logs/validator<< parameters.validator >>
                 docker logs validator<< parameters.validator >>_rabbitmq_1 > ./artifacts/logs/validator<< parameters.validator >>/rabbitmq.log
                 docker logs validator<< parameters.validator >>_redis_1 > ./artifacts/logs/validator<< parameters.validator >>/redis.log
-                docker logs validator<< parameters.validator >>_proxy_1 >./artifacts/logs/validator<< parameters.validator >>/proxy.log
+                docker logs validator<< parameters.validator >>_proxy_1 > ./artifacts/logs/validator<< parameters.validator >>/proxy.log
                 docker logs validator<< parameters.validator >>_eth-watcher_1 > ./artifacts/logs/validator<< parameters.validator >>/eth-watcher.log
                 docker logs validator<< parameters.validator >>_bnc-watcher_1 > ./artifacts/logs/validator<< parameters.validator >>/bnc-watcher.log
                 docker logs validator<< parameters.validator >>_signer_1 > ./artifacts/logs/validator<< parameters.validator >>/signer.log
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index afa2c00..91845c1 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -19,10 +19,6 @@ services:
       - LOG_LEVEL
       - "GAS_LIMIT_FACTOR=3"
       - "MAX_GAS_LIMIT=6000000"
-    volumes:
-      - '../deploy/deploy-test/build/contracts/IERC20.json:/proxy/contracts_data/IERC20.json'
-      - '../deploy/deploy-home/build/contracts/Bridge.json:/proxy/contracts_data/Bridge.json'
-      - '../deploy/deploy-side/build/contracts/SharedDB.json:/proxy/contracts_data/SharedDB.json'
     ports:
       - '${VOTES_PROXY_PORT}:8002'
     networks:
@@ -61,11 +57,12 @@ services:
     networks:
       - test_network
   redis:
-    image: redis:5.0.5-alpine
+    image: redis
+    build:
+      dockerfile: redis/Dockerfile
+      context: .
     volumes:
       - '${PWD}/${TARGET_NETWORK}/db:/data'
-      - './configs/redis.conf:/usr/local/etc/redis/redis.conf'
-    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
     networks:
       - test_network
   rabbitmq:
@@ -92,8 +89,6 @@ services:
       - VALIDATOR_PRIVATE_KEY
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - LOG_LEVEL
-    volumes:
-      - '../deploy/deploy-home/build/contracts/Bridge.json:/watcher/contracts_data/Bridge.json'
     networks:
       - test_network
       - blockchain_home
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index a79b816..499e9f7 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -19,10 +19,6 @@ services:
       - LOG_LEVEL
       - "GAS_LIMIT_FACTOR=3"
       - "MAX_GAS_LIMIT=6000000"
-    volumes:
-      - '../deploy/deploy-test/build/contracts/IERC20.json:/proxy/contracts_data/IERC20.json'
-      - '../deploy/deploy-home/build/contracts/Bridge.json:/proxy/contracts_data/Bridge.json'
-      - '../deploy/deploy-side/build/contracts/SharedDB.json:/proxy/contracts_data/SharedDB.json'
     ports:
       - '${VOTES_PROXY_PORT}:8002'
     networks:
@@ -65,11 +61,12 @@ services:
       - rabbit-signer-net
       - redis-signer-net
   redis:
-    image: redis:5.0.5-alpine
+    image: redis
+    build:
+      dockerfile: redis/Dockerfile
+      context: .
     volumes:
       - '${PWD}/${TARGET_NETWORK}/db:/data'
-      - './configs/redis.conf:/usr/local/etc/redis/redis.conf'
-    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
     networks:
       - redis-signer-net
       - redis-keygen-net
@@ -101,8 +98,6 @@ services:
       - VALIDATOR_PRIVATE_KEY
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - LOG_LEVEL
-    volumes:
-      - '../deploy/deploy-home/build/contracts/Bridge.json:/watcher/contracts_data/Bridge.json'
     networks:
       - rabbit-ethwatcher-net
       - redis-ethwatcher-net
diff --git a/src/oracle/ethWatcher/Bridge.json b/src/oracle/ethWatcher/Bridge.json
new file mode 100644
index 0000000..9eba79e
--- /dev/null
+++ b/src/oracle/ethWatcher/Bridge.json
@@ -0,0 +1,35243 @@
+{
+  "contractName": "Bridge",
+  "abi": [
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "status",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "usedRange",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "votes",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "dbTransfer",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "tokenContract",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "epoch",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "votesCount",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "nextEpoch",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "dbTransferCount",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "name": "threshold",
+          "type": "uint256"
+        },
+        {
+          "name": "validators",
+          "type": "address[]"
+        },
+        {
+          "name": "_tokenContract",
+          "type": "address"
+        },
+        {
+          "name": "limits",
+          "type": "uint256[2]"
+        },
+        {
+          "name": "rangeSize",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "constructor"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "nonce",
+          "type": "uint256"
+        }
+      ],
+      "name": "ExchangeRequest",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "oldEpoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": true,
+          "name": "newEpoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewEpoch",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewEpochCancelled",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "oldEpoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": true,
+          "name": "newEpoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewFundsTransfer",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "epoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "x",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "y",
+          "type": "uint256"
+        }
+      ],
+      "name": "EpochStart",
+      "type": "event"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "exchange",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "to",
+          "type": "address"
+        },
+        {
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "transfer",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "x",
+          "type": "uint256"
+        },
+        {
+          "name": "y",
+          "type": "uint256"
+        }
+      ],
+      "name": "confirmKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "confirmFundsTransfer",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getStartBlock",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getStartBlock",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getNonce",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNonce",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getX",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getY",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getPartyId",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "a",
+          "type": "address"
+        }
+      ],
+      "name": "getNextPartyId",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getValidators",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address[]"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextValidators",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address[]"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "startVoting",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "validator",
+          "type": "address"
+        }
+      ],
+      "name": "voteAddValidator",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "validator",
+          "type": "address"
+        }
+      ],
+      "name": "voteRemoveValidator",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "threshold",
+          "type": "uint256"
+        }
+      ],
+      "name": "voteChangeThreshold",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "rangeSize",
+          "type": "uint256"
+        }
+      ],
+      "name": "voteChangeRangeSize",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "voteStartKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "voteCancelKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "metadata": 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+  "source": "pragma solidity ^0.5.0;\n\nimport './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';\n\ncontract Bridge {\n    event ExchangeRequest(uint value, uint nonce);\n    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);\n    event NewEpochCancelled(uint indexed epoch);\n    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);\n    event EpochStart(uint indexed epoch, uint x, uint y);\n\n    struct State {\n        address[] validators;\n        uint threshold;\n        uint rangeSize;\n        uint startBlock;\n        uint nonce;\n        uint x;\n        uint y;\n    }\n\n    enum Status {\n        READY, // bridge is in ready to perform operations\n        VOTING, // voting for changing in next epoch, but still ready\n        KEYGEN, //keygen, can be cancelled\n        FUNDS_TRANSFER // funds transfer, cannot be cancelled\n    }\n\n    enum Vote {\n        CONFIRM_KEYGEN,\n        CONFIRM_FUNDS_TRANSFER,\n        START_VOTING,\n        ADD_VALIDATOR,\n        REMOVE_VALIDATOR,\n        CHANGE_THRESHOLD,\n        CHANGE_RANGE_SIZE,\n        START_KEYGEN,\n        CANCEL_KEYGEN,\n        TRANSFER\n    }\n\n    mapping(uint => State) states;\n\n    mapping(bytes32 => uint) public dbTransferCount;\n    mapping(bytes32 => bool) public dbTransfer;\n    mapping(bytes32 => uint) public votesCount;\n    mapping(bytes32 => bool) public votes;\n    mapping(bytes32 => bool) public usedRange;\n\n    Status public status;\n\n    uint public epoch;\n    uint public nextEpoch;\n\n    uint minTxLimit;\n    uint maxTxLimit;\n\n    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {\n        require(validators.length > 0);\n        require(threshold < validators.length);\n\n        tokenContract = IERC20(_tokenContract);\n\n        epoch = 0;\n        status = Status.KEYGEN;\n        nextEpoch = 1;\n\n        states[nextEpoch] = State(validators, threshold, rangeSize, 0, uint(-1), 0, 0);\n\n        minTxLimit = limits[0];\n        maxTxLimit = limits[1];\n\n        emit NewEpoch(0, 1);\n    }\n\n    IERC20 public tokenContract;\n\n    modifier ready {\n        require(status == Status.READY, \"Not in ready state\");\n        _;\n    }\n\n    modifier readyOrVoting {\n        require(status == Status.READY || status == Status.VOTING, \"Not in ready or voting state\");\n        _;\n    }\n\n    modifier voting {\n        require(status == Status.VOTING, \"Not in voting state\");\n        _;\n    }\n\n    modifier keygen {\n        require(status == Status.KEYGEN, \"Not in keygen state\");\n        _;\n    }\n\n    modifier fundsTransfer {\n        require(status == Status.FUNDS_TRANSFER, \"Not in funds transfer state\");\n        _;\n    }\n\n    modifier currentValidator {\n        require(getPartyId() != 0, \"Not a current validator\");\n        _;\n    }\n\n    function exchange(uint value) public ready {\n        require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);\n\n        uint txRange = (block.number - getStartBlock()) / getRangeSize();\n        if (!usedRange[keccak256(abi.encodePacked(txRange, epoch))]) {\n            usedRange[keccak256(abi.encodePacked(txRange, epoch))] = true;\n            states[epoch].nonce++;\n        }\n\n        tokenContract.transferFrom(msg.sender, address(this), value);\n        emit ExchangeRequest(value, getNonce());\n    }\n\n    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {\n        if (tryVote(Vote.TRANSFER, hash, to, value)) {\n            tokenContract.transfer(to, value);\n        }\n    }\n\n    function confirmKeygen(uint x, uint y) public keygen {\n        require(getNextPartyId(msg.sender) != 0, \"Not a next validator\");\n\n        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {\n            states[nextEpoch].x = x;\n            states[nextEpoch].y = y;\n            if (nextEpoch == 1) {\n                status = Status.READY;\n                states[nextEpoch].startBlock = block.number;\n                states[nextEpoch].nonce = uint(-1);\n                epoch = nextEpoch;\n                emit EpochStart(epoch, x, y);\n            }\n            else {\n                status = Status.FUNDS_TRANSFER;\n                emit NewFundsTransfer(epoch, nextEpoch);\n            }\n        }\n    }\n\n    function confirmFundsTransfer() public fundsTransfer currentValidator {\n        require(epoch > 0, \"First epoch does not need funds transfer\");\n\n        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {\n            status = Status.READY;\n            states[nextEpoch].startBlock = block.number;\n            states[nextEpoch].nonce = uint(-1);\n            epoch = nextEpoch;\n            emit EpochStart(epoch, getX(), getY());\n        }\n    }\n\n    function getParties() view public returns (uint) {\n        return getParties(epoch);\n    }\n\n    function getNextParties() view public returns (uint) {\n        return getParties(nextEpoch);\n    }\n\n    function getParties(uint _epoch) view public returns (uint) {\n        return states[_epoch].validators.length;\n    }\n\n    function getThreshold() view public returns (uint) {\n        return getThreshold(epoch);\n    }\n\n    function getNextThreshold() view public returns (uint) {\n        return getThreshold(nextEpoch);\n    }\n\n    function getThreshold(uint _epoch) view public returns (uint) {\n        return states[_epoch].threshold;\n    }\n\n    function getStartBlock() view public returns (uint) {\n        return getStartBlock(epoch);\n    }\n\n    function getStartBlock(uint _epoch) view public returns (uint) {\n        return states[_epoch].startBlock;\n    }\n\n    function getRangeSize() view public returns (uint) {\n        return getRangeSize(epoch);\n    }\n\n    function getNextRangeSize() view public returns (uint) {\n        return getRangeSize(nextEpoch);\n    }\n\n    function getRangeSize(uint _epoch) view public returns (uint) {\n        return states[_epoch].rangeSize;\n    }\n\n    function getNonce() view public returns (uint) {\n        return getNonce(epoch);\n    }\n\n    function getNonce(uint _epoch) view public returns (uint) {\n        return states[_epoch].nonce;\n    }\n\n    function getX() view public returns (uint) {\n        return states[epoch].x;\n    }\n\n    function getY() view public returns (uint) {\n        return states[epoch].y;\n    }\n\n    function getPartyId() view public returns (uint) {\n        address[] memory validators = getValidators();\n        for (uint i = 0; i < getParties(); i++) {\n            if (validators[i] == msg.sender)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getNextPartyId(address a) view public returns (uint) {\n        address[] memory validators = getNextValidators();\n        for (uint i = 0; i < getNextParties(); i++) {\n            if (validators[i] == a)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getValidators() view public returns (address[] memory) {\n        return states[epoch].validators;\n    }\n\n    function getNextValidators() view public returns (address[] memory) {\n        return states[nextEpoch].validators;\n    }\n\n    function startVoting() public readyOrVoting currentValidator {\n        if (tryVote(Vote.START_VOTING)) {\n            nextEpoch++;\n            status = Status.VOTING;\n            states[nextEpoch].threshold = getThreshold();\n            states[nextEpoch].validators = getValidators();\n            states[nextEpoch].rangeSize = getRangeSize();\n        }\n    }\n\n    function voteAddValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) == 0, \"Already a validator\");\n\n        if (tryVote(Vote.ADD_VALIDATOR, validator)) {\n            states[nextEpoch].validators.push(validator);\n        }\n    }\n\n    function voteRemoveValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) != 0, \"Already not a validator\");\n\n        if (tryVote(Vote.REMOVE_VALIDATOR, validator)) {\n            _removeValidator(validator);\n        }\n    }\n\n    function _removeValidator(address validator) private {\n        for (uint i = 0; i < getNextParties() - 1; i++) {\n            if (states[nextEpoch].validators[i] == validator) {\n                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];\n                break;\n            }\n        }\n        delete states[nextEpoch].validators[getNextParties() - 1];\n        states[nextEpoch].validators.length--;\n    }\n\n    function voteChangeThreshold(uint threshold) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {\n            states[nextEpoch].threshold = threshold;\n        }\n    }\n\n    function voteChangeRangeSize(uint rangeSize) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_RANGE_SIZE, rangeSize)) {\n            states[nextEpoch].rangeSize = rangeSize;\n        }\n    }\n\n    function voteStartKeygen() public voting currentValidator {\n        if (tryVote(Vote.START_KEYGEN)) {\n            status = Status.KEYGEN;\n\n            emit NewEpoch(epoch, nextEpoch);\n        }\n    }\n\n    function voteCancelKeygen() public keygen currentValidator {\n        if (tryVote(Vote.CANCEL_KEYGEN)) {\n            status = Status.VOTING;\n\n            emit NewEpochCancelled(nextEpoch);\n        }\n    }\n\n    function tryVote(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, address addr) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, uint num) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));\n        return putVote(vote);\n    }\n\n    function tryConfirm(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putConfirm(vote);\n    }\n\n    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));\n        return putConfirm(vote);\n    }\n\n    function putVote(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Voted already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function putConfirm(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Confirmed already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getNextThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function personalizeVote(bytes32 vote) private view returns (bytes32) {\n        return keccak256(abi.encodePacked(vote, msg.sender));\n    }\n}\n",
+  "sourcePath": "/build/contracts/Bridge.sol",
+  "ast": {
+    "absolutePath": "/build/contracts/Bridge.sol",
+    "exportedSymbols": {
+      "Bridge": [
+        1340
+      ]
+    },
+    "id": 1341,
+    "nodeType": "SourceUnit",
+    "nodes": [
+      {
+        "id": 1,
+        "literals": [
+          "solidity",
+          "^",
+          "0.5",
+          ".0"
+        ],
+        "nodeType": "PragmaDirective",
+        "src": "0:23:0"
+      },
+      {
+        "absolutePath": "/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
+        "file": "./openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
+        "id": 2,
+        "nodeType": "ImportDirective",
+        "scope": 1341,
+        "sourceUnit": 10033,
+        "src": "25:66:0",
+        "symbolAliases": [],
+        "unitAlias": ""
+      },
+      {
+        "baseContracts": [],
+        "contractDependencies": [],
+        "contractKind": "contract",
+        "documentation": null,
+        "fullyImplemented": true,
+        "id": 1340,
+        "linearizedBaseContracts": [
+          1340
+        ],
+        "name": "Bridge",
+        "nodeType": "ContractDefinition",
+        "nodes": [
+          {
+            "anonymous": false,
+            "documentation": null,
+            "id": 8,
+            "name": "ExchangeRequest",
+            "nodeType": "EventDefinition",
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+              "nodeType": "ParameterList",
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+                  "src": "137:10:0",
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+                      "typeString": "uint256"
+                    }
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+            },
+            "src": "232:44:0"
+          },
+          {
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+            "name": "NewFundsTransfer",
+            "nodeType": "EventDefinition",
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+                    }
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+              "nodeType": "ParameterList",
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+                  "src": "372:18:0",
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+              "src": "371:36:0"
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+            "src": "355:53:0"
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+                    }
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+                  }
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+                "visibility": "internal"
+              },
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+                "src": "467:14:0",
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+                "src": "515:15:0",
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+            "src": "414:175:0",
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+                "name": "VOTING",
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+            ],
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+            "src": "595:253:0"
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+                "name": "CONFIRM_FUNDS_TRANSFER",
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+                "src": "898:22:0"
+              },
+              {
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+                "src": "930:12:0"
+              },
+              {
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+                "name": "ADD_VALIDATOR",
+                "nodeType": "EnumValue",
+                "src": "952:13:0"
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+              {
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+                "src": "975:16:0"
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+                "src": "1001:16:0"
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+                "name": "CHANGE_RANGE_SIZE",
+                "nodeType": "EnumValue",
+                "src": "1027:17:0"
+              },
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+                "id": 61,
+                "name": "START_KEYGEN",
+                "nodeType": "EnumValue",
+                "src": "1054:12:0"
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+                "src": "1099:8:0"
+              }
+            ],
+            "name": "Vote",
+            "nodeType": "EnumDefinition",
+            "src": "854:259:0"
+          },
+          {
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+            "name": "states",
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+            "src": "1119:29:0",
+            "stateVariable": true,
+            "storageLocation": "default",
+            "typeDescriptions": {
+              "typeIdentifier": "t_mapping$_t_uint256_$_t_struct$_State_$48_storage_$",
+              "typeString": "mapping(uint256 => struct Bridge.State)"
+            },
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+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "10804:14:0"
+            },
+            "returnParameters": {
+              "id": 1274,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1273,
+                  "name": "",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1322,
+                  "src": "10836:4:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bool",
+                    "typeString": "bool"
+                  },
+                  "typeName": {
+                    "id": 1272,
+                    "name": "bool",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "10836:4:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bool",
+                      "typeString": "bool"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "10835:6:0"
+            },
+            "scope": 1340,
+            "src": "10785:420:0",
+            "stateMutability": "nonpayable",
+            "superFunction": null,
+            "visibility": "private"
+          },
+          {
+            "body": {
+              "id": 1338,
+              "nodeType": "Block",
+              "src": "11281:69:0",
+              "statements": [
+                {
+                  "expression": {
+                    "argumentTypes": null,
+                    "arguments": [
+                      {
+                        "argumentTypes": null,
+                        "arguments": [
+                          {
+                            "argumentTypes": null,
+                            "id": 1332,
+                            "name": "vote",
+                            "nodeType": "Identifier",
+                            "overloadedDeclarations": [],
+                            "referencedDeclaration": 1324,
+                            "src": "11325:4:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_bytes32",
+                              "typeString": "bytes32"
+                            }
+                          },
+                          {
+                            "argumentTypes": null,
+                            "expression": {
+                              "argumentTypes": null,
+                              "id": 1333,
+                              "name": "msg",
+                              "nodeType": "Identifier",
+                              "overloadedDeclarations": [],
+                              "referencedDeclaration": 13088,
+                              "src": "11331:3:0",
+                              "typeDescriptions": {
+                                "typeIdentifier": "t_magic_message",
+                                "typeString": "msg"
+                              }
+                            },
+                            "id": 1334,
+                            "isConstant": false,
+                            "isLValue": false,
+                            "isPure": false,
+                            "lValueRequested": false,
+                            "memberName": "sender",
+                            "nodeType": "MemberAccess",
+                            "referencedDeclaration": null,
+                            "src": "11331:10:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_address_payable",
+                              "typeString": "address payable"
+                            }
+                          }
+                        ],
+                        "expression": {
+                          "argumentTypes": [
+                            {
+                              "typeIdentifier": "t_bytes32",
+                              "typeString": "bytes32"
+                            },
+                            {
+                              "typeIdentifier": "t_address_payable",
+                              "typeString": "address payable"
+                            }
+                          ],
+                          "expression": {
+                            "argumentTypes": null,
+                            "id": 1330,
+                            "name": "abi",
+                            "nodeType": "Identifier",
+                            "overloadedDeclarations": [],
+                            "referencedDeclaration": 13075,
+                            "src": "11308:3:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_magic_abi",
+                              "typeString": "abi"
+                            }
+                          },
+                          "id": 1331,
+                          "isConstant": false,
+                          "isLValue": false,
+                          "isPure": true,
+                          "lValueRequested": false,
+                          "memberName": "encodePacked",
+                          "nodeType": "MemberAccess",
+                          "referencedDeclaration": null,
+                          "src": "11308:16:0",
+                          "typeDescriptions": {
+                            "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
+                            "typeString": "function () pure returns (bytes memory)"
+                          }
+                        },
+                        "id": 1335,
+                        "isConstant": false,
+                        "isLValue": false,
+                        "isPure": false,
+                        "kind": "functionCall",
+                        "lValueRequested": false,
+                        "names": [],
+                        "nodeType": "FunctionCall",
+                        "src": "11308:34:0",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_bytes_memory_ptr",
+                          "typeString": "bytes memory"
+                        }
+                      }
+                    ],
+                    "expression": {
+                      "argumentTypes": [
+                        {
+                          "typeIdentifier": "t_bytes_memory_ptr",
+                          "typeString": "bytes memory"
+                        }
+                      ],
+                      "id": 1329,
+                      "name": "keccak256",
+                      "nodeType": "Identifier",
+                      "overloadedDeclarations": [],
+                      "referencedDeclaration": 13082,
+                      "src": "11298:9:0",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
+                        "typeString": "function (bytes memory) pure returns (bytes32)"
+                      }
+                    },
+                    "id": 1336,
+                    "isConstant": false,
+                    "isLValue": false,
+                    "isPure": false,
+                    "kind": "functionCall",
+                    "lValueRequested": false,
+                    "names": [],
+                    "nodeType": "FunctionCall",
+                    "src": "11298:45:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "functionReturnParameters": 1328,
+                  "id": 1337,
+                  "nodeType": "Return",
+                  "src": "11291:52:0"
+                }
+              ]
+            },
+            "documentation": null,
+            "id": 1339,
+            "implemented": true,
+            "kind": "function",
+            "modifiers": [],
+            "name": "personalizeVote",
+            "nodeType": "FunctionDefinition",
+            "parameters": {
+              "id": 1325,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1324,
+                  "name": "vote",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1339,
+                  "src": "11236:12:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1323,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "11236:7:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "11235:14:0"
+            },
+            "returnParameters": {
+              "id": 1328,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1327,
+                  "name": "",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1339,
+                  "src": "11272:7:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1326,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "11272:7:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "11271:9:0"
+            },
+            "scope": 1340,
+            "src": "11211:139:0",
+            "stateMutability": "view",
+            "superFunction": null,
+            "visibility": "private"
+          }
+        ],
+        "scope": 1341,
+        "src": "93:11259:0"
+      }
+    ],
+    "src": "0:11353:0"
+  },
+  "compiler": {
+    "name": "solc",
+    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
+  },
+  "networks": {
+    "44": {
+      "events": {
+        "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "oldEpoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "newEpoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewEpoch",
+          "type": "event",
+          "signature": "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609"
+        },
+        "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "epoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewEpochCancelled",
+          "type": "event",
+          "signature": "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a"
+        },
+        "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "oldEpoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "newEpoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewFundsTransfer",
+          "type": "event",
+          "signature": "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b"
+        },
+        "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "epoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "x",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "y",
+              "type": "uint256"
+            }
+          ],
+          "name": "EpochStart",
+          "type": "event",
+          "signature": "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c"
+        },
+        "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": false,
+              "name": "value",
+              "type": "uint256"
+            }
+          ],
+          "name": "ExchangeRequest",
+          "type": "event",
+          "signature": "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e"
+        },
+        "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": false,
+              "name": "value",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "nonce",
+              "type": "uint256"
+            }
+          ],
+          "name": "ExchangeRequest",
+          "type": "event",
+          "signature": "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02"
+        }
+      },
+      "links": {},
+      "address": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
+      "transactionHash": "0x912e1b3c5341609e1d0c0cd5d81ff6b7d9b2e8f497bd393ea91af1a4038cba78"
+    }
+  },
+  "schemaVersion": "3.0.11",
+  "updatedAt": "2019-10-28T13:22:54.868Z",
+  "devdoc": {
+    "methods": {}
+  },
+  "userdoc": {
+    "methods": {}
+  }
+}
\ No newline at end of file
diff --git a/src/oracle/ethWatcher/Dockerfile b/src/oracle/ethWatcher/Dockerfile
index 25351a1..fa11564 100644
--- a/src/oracle/ethWatcher/Dockerfile
+++ b/src/oracle/ethWatcher/Dockerfile
@@ -10,5 +10,6 @@ COPY ./ethWatcher/package.json /watcher/
 RUN npm install
 
 COPY ./ethWatcher/ethWatcher.js ./shared/db.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js /watcher/
+COPY ./proxy/Bridge.json /watcher/contracts_data/
 
 ENTRYPOINT ["node", "ethWatcher.js"]
diff --git a/src/oracle/proxy/Bridge.json b/src/oracle/proxy/Bridge.json
new file mode 100644
index 0000000..9eba79e
--- /dev/null
+++ b/src/oracle/proxy/Bridge.json
@@ -0,0 +1,35243 @@
+{
+  "contractName": "Bridge",
+  "abi": [
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "status",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "usedRange",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "votes",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "dbTransfer",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "tokenContract",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "epoch",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "votesCount",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "nextEpoch",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "dbTransferCount",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "name": "threshold",
+          "type": "uint256"
+        },
+        {
+          "name": "validators",
+          "type": "address[]"
+        },
+        {
+          "name": "_tokenContract",
+          "type": "address"
+        },
+        {
+          "name": "limits",
+          "type": "uint256[2]"
+        },
+        {
+          "name": "rangeSize",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "constructor"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "nonce",
+          "type": "uint256"
+        }
+      ],
+      "name": "ExchangeRequest",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "oldEpoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": true,
+          "name": "newEpoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewEpoch",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewEpochCancelled",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "oldEpoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": true,
+          "name": "newEpoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "NewFundsTransfer",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "epoch",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "x",
+          "type": "uint256"
+        },
+        {
+          "indexed": false,
+          "name": "y",
+          "type": "uint256"
+        }
+      ],
+      "name": "EpochStart",
+      "type": "event"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "exchange",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "to",
+          "type": "address"
+        },
+        {
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "transfer",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "x",
+          "type": "uint256"
+        },
+        {
+          "name": "y",
+          "type": "uint256"
+        }
+      ],
+      "name": "confirmKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "confirmFundsTransfer",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getParties",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getThreshold",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getStartBlock",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getStartBlock",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getRangeSize",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_epoch",
+          "type": "uint256"
+        }
+      ],
+      "name": "getNonce",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNonce",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getX",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getY",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getPartyId",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "a",
+          "type": "address"
+        }
+      ],
+      "name": "getNextPartyId",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getValidators",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address[]"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "getNextValidators",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address[]"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "startVoting",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "validator",
+          "type": "address"
+        }
+      ],
+      "name": "voteAddValidator",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "validator",
+          "type": "address"
+        }
+      ],
+      "name": "voteRemoveValidator",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "threshold",
+          "type": "uint256"
+        }
+      ],
+      "name": "voteChangeThreshold",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "rangeSize",
+          "type": "uint256"
+        }
+      ],
+      "name": "voteChangeRangeSize",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "voteStartKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [],
+      "name": "voteCancelKeygen",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "metadata": 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ress\"}],\"name\":\"voteRemoveValidator\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getStartBlock\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"x\",\"type\":\"uint256\"},{\"name\":\"y\",\"type\":\"uint256\"}],\"name\":\"confirmKeygen\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getParties\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"votesCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"nextEpoch\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getValidators\",\"outputs\":[{\"name\":\"\",\"type\":\"address[]\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getNextRangeSize\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_epoch\",\"type\":\"uint256\"}],\"name\":\"getRangeSize\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"threshold\",\"type\":\"uint256\"}],\"name\":\"voteChangeThreshold\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getNonce\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"dbTransferCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"confirmFundsTransfer\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getThreshold\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"name\":\"threshold\",\"type\":\"uint256\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"_tokenContract\",\"type\":\"address\"},{\"name\":\"limits\",\"type\":\"uint256[2]\"},{\"name\":\"rangeSize\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"nonce\",\"type\":\"uint256\"}],\"name\":\"ExchangeRequest\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"oldEpoch\",\"type\":\"uint256\"},{\"indexed\":true,\"name\":\"newEpoch\",\"type\":\"uint256\"}],\"name\":\"NewEpoch\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"epoch\",\"type\":\"uint256\"}],\"name\":\"NewEpochCancelled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"oldEpoch\",\"type\":\"uint256\"},{\"indexed\":true,\"name\":\"newEpoch\",\"type\":\"uint256\"}],\"name\":\"NewFundsTransfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"epoch\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"x\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"y\",\"type\":\"uint256\"}],\"name\":\"EpochStart\",\"type\":\"event\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/Bridge.sol\":\"Bridge\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/Bridge.sol\":{\"keccak256\":\"0xedcf62b24f2b47b0e83af55ca6471e82e301f8287aa78e7c41bbca2d3ddc4155\",\"urls\":[\"bzzr://84b325be5714e21d85966ce976f9996d2f7d2305b467c191d37f6e91bb1901fb\",\"dweb:/ipfs/QmY1RVRv3H9E9T2VwmSdyKxAfQFMd7t9yYjcVFVpox9Lf8\"]},\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\",\"dweb:/ipfs/QmP5NaEwZthQeM2ESz4WTT3osrP7jhbvu7ocbttBi2JAw6\"]}},\"version\":1}",
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+  "source": "pragma solidity ^0.5.0;\n\nimport './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';\n\ncontract Bridge {\n    event ExchangeRequest(uint value, uint nonce);\n    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);\n    event NewEpochCancelled(uint indexed epoch);\n    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);\n    event EpochStart(uint indexed epoch, uint x, uint y);\n\n    struct State {\n        address[] validators;\n        uint threshold;\n        uint rangeSize;\n        uint startBlock;\n        uint nonce;\n        uint x;\n        uint y;\n    }\n\n    enum Status {\n        READY, // bridge is in ready to perform operations\n        VOTING, // voting for changing in next epoch, but still ready\n        KEYGEN, //keygen, can be cancelled\n        FUNDS_TRANSFER // funds transfer, cannot be cancelled\n    }\n\n    enum Vote {\n        CONFIRM_KEYGEN,\n        CONFIRM_FUNDS_TRANSFER,\n        START_VOTING,\n        ADD_VALIDATOR,\n        REMOVE_VALIDATOR,\n        CHANGE_THRESHOLD,\n        CHANGE_RANGE_SIZE,\n        START_KEYGEN,\n        CANCEL_KEYGEN,\n        TRANSFER\n    }\n\n    mapping(uint => State) states;\n\n    mapping(bytes32 => uint) public dbTransferCount;\n    mapping(bytes32 => bool) public dbTransfer;\n    mapping(bytes32 => uint) public votesCount;\n    mapping(bytes32 => bool) public votes;\n    mapping(bytes32 => bool) public usedRange;\n\n    Status public status;\n\n    uint public epoch;\n    uint public nextEpoch;\n\n    uint minTxLimit;\n    uint maxTxLimit;\n\n    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {\n        require(validators.length > 0);\n        require(threshold < validators.length);\n\n        tokenContract = IERC20(_tokenContract);\n\n        epoch = 0;\n        status = Status.KEYGEN;\n        nextEpoch = 1;\n\n        states[nextEpoch] = State(validators, threshold, rangeSize, 0, uint(-1), 0, 0);\n\n        minTxLimit = limits[0];\n        maxTxLimit = limits[1];\n\n        emit NewEpoch(0, 1);\n    }\n\n    IERC20 public tokenContract;\n\n    modifier ready {\n        require(status == Status.READY, \"Not in ready state\");\n        _;\n    }\n\n    modifier readyOrVoting {\n        require(status == Status.READY || status == Status.VOTING, \"Not in ready or voting state\");\n        _;\n    }\n\n    modifier voting {\n        require(status == Status.VOTING, \"Not in voting state\");\n        _;\n    }\n\n    modifier keygen {\n        require(status == Status.KEYGEN, \"Not in keygen state\");\n        _;\n    }\n\n    modifier fundsTransfer {\n        require(status == Status.FUNDS_TRANSFER, \"Not in funds transfer state\");\n        _;\n    }\n\n    modifier currentValidator {\n        require(getPartyId() != 0, \"Not a current validator\");\n        _;\n    }\n\n    function exchange(uint value) public ready {\n        require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);\n\n        uint txRange = (block.number - getStartBlock()) / getRangeSize();\n        if (!usedRange[keccak256(abi.encodePacked(txRange, epoch))]) {\n            usedRange[keccak256(abi.encodePacked(txRange, epoch))] = true;\n            states[epoch].nonce++;\n        }\n\n        tokenContract.transferFrom(msg.sender, address(this), value);\n        emit ExchangeRequest(value, getNonce());\n    }\n\n    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {\n        if (tryVote(Vote.TRANSFER, hash, to, value)) {\n            tokenContract.transfer(to, value);\n        }\n    }\n\n    function confirmKeygen(uint x, uint y) public keygen {\n        require(getNextPartyId(msg.sender) != 0, \"Not a next validator\");\n\n        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {\n            states[nextEpoch].x = x;\n            states[nextEpoch].y = y;\n            if (nextEpoch == 1) {\n                status = Status.READY;\n                states[nextEpoch].startBlock = block.number;\n                states[nextEpoch].nonce = uint(-1);\n                epoch = nextEpoch;\n                emit EpochStart(epoch, x, y);\n            }\n            else {\n                status = Status.FUNDS_TRANSFER;\n                emit NewFundsTransfer(epoch, nextEpoch);\n            }\n        }\n    }\n\n    function confirmFundsTransfer() public fundsTransfer currentValidator {\n        require(epoch > 0, \"First epoch does not need funds transfer\");\n\n        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {\n            status = Status.READY;\n            states[nextEpoch].startBlock = block.number;\n            states[nextEpoch].nonce = uint(-1);\n            epoch = nextEpoch;\n            emit EpochStart(epoch, getX(), getY());\n        }\n    }\n\n    function getParties() view public returns (uint) {\n        return getParties(epoch);\n    }\n\n    function getNextParties() view public returns (uint) {\n        return getParties(nextEpoch);\n    }\n\n    function getParties(uint _epoch) view public returns (uint) {\n        return states[_epoch].validators.length;\n    }\n\n    function getThreshold() view public returns (uint) {\n        return getThreshold(epoch);\n    }\n\n    function getNextThreshold() view public returns (uint) {\n        return getThreshold(nextEpoch);\n    }\n\n    function getThreshold(uint _epoch) view public returns (uint) {\n        return states[_epoch].threshold;\n    }\n\n    function getStartBlock() view public returns (uint) {\n        return getStartBlock(epoch);\n    }\n\n    function getStartBlock(uint _epoch) view public returns (uint) {\n        return states[_epoch].startBlock;\n    }\n\n    function getRangeSize() view public returns (uint) {\n        return getRangeSize(epoch);\n    }\n\n    function getNextRangeSize() view public returns (uint) {\n        return getRangeSize(nextEpoch);\n    }\n\n    function getRangeSize(uint _epoch) view public returns (uint) {\n        return states[_epoch].rangeSize;\n    }\n\n    function getNonce() view public returns (uint) {\n        return getNonce(epoch);\n    }\n\n    function getNonce(uint _epoch) view public returns (uint) {\n        return states[_epoch].nonce;\n    }\n\n    function getX() view public returns (uint) {\n        return states[epoch].x;\n    }\n\n    function getY() view public returns (uint) {\n        return states[epoch].y;\n    }\n\n    function getPartyId() view public returns (uint) {\n        address[] memory validators = getValidators();\n        for (uint i = 0; i < getParties(); i++) {\n            if (validators[i] == msg.sender)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getNextPartyId(address a) view public returns (uint) {\n        address[] memory validators = getNextValidators();\n        for (uint i = 0; i < getNextParties(); i++) {\n            if (validators[i] == a)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getValidators() view public returns (address[] memory) {\n        return states[epoch].validators;\n    }\n\n    function getNextValidators() view public returns (address[] memory) {\n        return states[nextEpoch].validators;\n    }\n\n    function startVoting() public readyOrVoting currentValidator {\n        if (tryVote(Vote.START_VOTING)) {\n            nextEpoch++;\n            status = Status.VOTING;\n            states[nextEpoch].threshold = getThreshold();\n            states[nextEpoch].validators = getValidators();\n            states[nextEpoch].rangeSize = getRangeSize();\n        }\n    }\n\n    function voteAddValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) == 0, \"Already a validator\");\n\n        if (tryVote(Vote.ADD_VALIDATOR, validator)) {\n            states[nextEpoch].validators.push(validator);\n        }\n    }\n\n    function voteRemoveValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) != 0, \"Already not a validator\");\n\n        if (tryVote(Vote.REMOVE_VALIDATOR, validator)) {\n            _removeValidator(validator);\n        }\n    }\n\n    function _removeValidator(address validator) private {\n        for (uint i = 0; i < getNextParties() - 1; i++) {\n            if (states[nextEpoch].validators[i] == validator) {\n                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];\n                break;\n            }\n        }\n        delete states[nextEpoch].validators[getNextParties() - 1];\n        states[nextEpoch].validators.length--;\n    }\n\n    function voteChangeThreshold(uint threshold) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {\n            states[nextEpoch].threshold = threshold;\n        }\n    }\n\n    function voteChangeRangeSize(uint rangeSize) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_RANGE_SIZE, rangeSize)) {\n            states[nextEpoch].rangeSize = rangeSize;\n        }\n    }\n\n    function voteStartKeygen() public voting currentValidator {\n        if (tryVote(Vote.START_KEYGEN)) {\n            status = Status.KEYGEN;\n\n            emit NewEpoch(epoch, nextEpoch);\n        }\n    }\n\n    function voteCancelKeygen() public keygen currentValidator {\n        if (tryVote(Vote.CANCEL_KEYGEN)) {\n            status = Status.VOTING;\n\n            emit NewEpochCancelled(nextEpoch);\n        }\n    }\n\n    function tryVote(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, address addr) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, uint num) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));\n        return putVote(vote);\n    }\n\n    function tryConfirm(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putConfirm(vote);\n    }\n\n    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));\n        return putConfirm(vote);\n    }\n\n    function putVote(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Voted already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function putConfirm(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Confirmed already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getNextThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function personalizeVote(bytes32 vote) private view returns (bytes32) {\n        return keccak256(abi.encodePacked(vote, msg.sender));\n    }\n}\n",
+  "sourcePath": "/build/contracts/Bridge.sol",
+  "ast": {
+    "absolutePath": "/build/contracts/Bridge.sol",
+    "exportedSymbols": {
+      "Bridge": [
+        1340
+      ]
+    },
+    "id": 1341,
+    "nodeType": "SourceUnit",
+    "nodes": [
+      {
+        "id": 1,
+        "literals": [
+          "solidity",
+          "^",
+          "0.5",
+          ".0"
+        ],
+        "nodeType": "PragmaDirective",
+        "src": "0:23:0"
+      },
+      {
+        "absolutePath": "/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
+        "file": "./openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
+        "id": 2,
+        "nodeType": "ImportDirective",
+        "scope": 1341,
+        "sourceUnit": 10033,
+        "src": "25:66:0",
+        "symbolAliases": [],
+        "unitAlias": ""
+      },
+      {
+        "baseContracts": [],
+        "contractDependencies": [],
+        "contractKind": "contract",
+        "documentation": null,
+        "fullyImplemented": true,
+        "id": 1340,
+        "linearizedBaseContracts": [
+          1340
+        ],
+        "name": "Bridge",
+        "nodeType": "ContractDefinition",
+        "nodes": [
+          {
+            "anonymous": false,
+            "documentation": null,
+            "id": 8,
+            "name": "ExchangeRequest",
+            "nodeType": "EventDefinition",
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+              "nodeType": "ParameterList",
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+                  "src": "137:10:0",
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+                      "typeString": "uint256"
+                    }
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+            },
+            "src": "232:44:0"
+          },
+          {
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+            "name": "NewFundsTransfer",
+            "nodeType": "EventDefinition",
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+                    }
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+              "nodeType": "ParameterList",
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+                  "src": "372:18:0",
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+              "src": "371:36:0"
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+            "src": "355:53:0"
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+                    }
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+                  }
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+                "visibility": "internal"
+              },
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+                "src": "467:14:0",
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+                "src": "515:15:0",
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+            "src": "414:175:0",
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+                "name": "VOTING",
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+            ],
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+            "src": "595:253:0"
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+                "name": "CONFIRM_FUNDS_TRANSFER",
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+                "src": "898:22:0"
+              },
+              {
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+                "src": "930:12:0"
+              },
+              {
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+                "name": "ADD_VALIDATOR",
+                "nodeType": "EnumValue",
+                "src": "952:13:0"
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+              {
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+                "src": "975:16:0"
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+                "src": "1001:16:0"
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+                "name": "CHANGE_RANGE_SIZE",
+                "nodeType": "EnumValue",
+                "src": "1027:17:0"
+              },
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+                "id": 61,
+                "name": "START_KEYGEN",
+                "nodeType": "EnumValue",
+                "src": "1054:12:0"
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+                "src": "1099:8:0"
+              }
+            ],
+            "name": "Vote",
+            "nodeType": "EnumDefinition",
+            "src": "854:259:0"
+          },
+          {
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+            "name": "states",
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+            "src": "1119:29:0",
+            "stateVariable": true,
+            "storageLocation": "default",
+            "typeDescriptions": {
+              "typeIdentifier": "t_mapping$_t_uint256_$_t_struct$_State_$48_storage_$",
+              "typeString": "mapping(uint256 => struct Bridge.State)"
+            },
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+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "10804:14:0"
+            },
+            "returnParameters": {
+              "id": 1274,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1273,
+                  "name": "",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1322,
+                  "src": "10836:4:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bool",
+                    "typeString": "bool"
+                  },
+                  "typeName": {
+                    "id": 1272,
+                    "name": "bool",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "10836:4:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bool",
+                      "typeString": "bool"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "10835:6:0"
+            },
+            "scope": 1340,
+            "src": "10785:420:0",
+            "stateMutability": "nonpayable",
+            "superFunction": null,
+            "visibility": "private"
+          },
+          {
+            "body": {
+              "id": 1338,
+              "nodeType": "Block",
+              "src": "11281:69:0",
+              "statements": [
+                {
+                  "expression": {
+                    "argumentTypes": null,
+                    "arguments": [
+                      {
+                        "argumentTypes": null,
+                        "arguments": [
+                          {
+                            "argumentTypes": null,
+                            "id": 1332,
+                            "name": "vote",
+                            "nodeType": "Identifier",
+                            "overloadedDeclarations": [],
+                            "referencedDeclaration": 1324,
+                            "src": "11325:4:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_bytes32",
+                              "typeString": "bytes32"
+                            }
+                          },
+                          {
+                            "argumentTypes": null,
+                            "expression": {
+                              "argumentTypes": null,
+                              "id": 1333,
+                              "name": "msg",
+                              "nodeType": "Identifier",
+                              "overloadedDeclarations": [],
+                              "referencedDeclaration": 13088,
+                              "src": "11331:3:0",
+                              "typeDescriptions": {
+                                "typeIdentifier": "t_magic_message",
+                                "typeString": "msg"
+                              }
+                            },
+                            "id": 1334,
+                            "isConstant": false,
+                            "isLValue": false,
+                            "isPure": false,
+                            "lValueRequested": false,
+                            "memberName": "sender",
+                            "nodeType": "MemberAccess",
+                            "referencedDeclaration": null,
+                            "src": "11331:10:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_address_payable",
+                              "typeString": "address payable"
+                            }
+                          }
+                        ],
+                        "expression": {
+                          "argumentTypes": [
+                            {
+                              "typeIdentifier": "t_bytes32",
+                              "typeString": "bytes32"
+                            },
+                            {
+                              "typeIdentifier": "t_address_payable",
+                              "typeString": "address payable"
+                            }
+                          ],
+                          "expression": {
+                            "argumentTypes": null,
+                            "id": 1330,
+                            "name": "abi",
+                            "nodeType": "Identifier",
+                            "overloadedDeclarations": [],
+                            "referencedDeclaration": 13075,
+                            "src": "11308:3:0",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_magic_abi",
+                              "typeString": "abi"
+                            }
+                          },
+                          "id": 1331,
+                          "isConstant": false,
+                          "isLValue": false,
+                          "isPure": true,
+                          "lValueRequested": false,
+                          "memberName": "encodePacked",
+                          "nodeType": "MemberAccess",
+                          "referencedDeclaration": null,
+                          "src": "11308:16:0",
+                          "typeDescriptions": {
+                            "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
+                            "typeString": "function () pure returns (bytes memory)"
+                          }
+                        },
+                        "id": 1335,
+                        "isConstant": false,
+                        "isLValue": false,
+                        "isPure": false,
+                        "kind": "functionCall",
+                        "lValueRequested": false,
+                        "names": [],
+                        "nodeType": "FunctionCall",
+                        "src": "11308:34:0",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_bytes_memory_ptr",
+                          "typeString": "bytes memory"
+                        }
+                      }
+                    ],
+                    "expression": {
+                      "argumentTypes": [
+                        {
+                          "typeIdentifier": "t_bytes_memory_ptr",
+                          "typeString": "bytes memory"
+                        }
+                      ],
+                      "id": 1329,
+                      "name": "keccak256",
+                      "nodeType": "Identifier",
+                      "overloadedDeclarations": [],
+                      "referencedDeclaration": 13082,
+                      "src": "11298:9:0",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
+                        "typeString": "function (bytes memory) pure returns (bytes32)"
+                      }
+                    },
+                    "id": 1336,
+                    "isConstant": false,
+                    "isLValue": false,
+                    "isPure": false,
+                    "kind": "functionCall",
+                    "lValueRequested": false,
+                    "names": [],
+                    "nodeType": "FunctionCall",
+                    "src": "11298:45:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "functionReturnParameters": 1328,
+                  "id": 1337,
+                  "nodeType": "Return",
+                  "src": "11291:52:0"
+                }
+              ]
+            },
+            "documentation": null,
+            "id": 1339,
+            "implemented": true,
+            "kind": "function",
+            "modifiers": [],
+            "name": "personalizeVote",
+            "nodeType": "FunctionDefinition",
+            "parameters": {
+              "id": 1325,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1324,
+                  "name": "vote",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1339,
+                  "src": "11236:12:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1323,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "11236:7:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "11235:14:0"
+            },
+            "returnParameters": {
+              "id": 1328,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1327,
+                  "name": "",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1339,
+                  "src": "11272:7:0",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1326,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "11272:7:0",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "11271:9:0"
+            },
+            "scope": 1340,
+            "src": "11211:139:0",
+            "stateMutability": "view",
+            "superFunction": null,
+            "visibility": "private"
+          }
+        ],
+        "scope": 1341,
+        "src": "93:11259:0"
+      }
+    ],
+    "src": "0:11353:0"
+  },
+  "compiler": {
+    "name": "solc",
+    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
+  },
+  "networks": {
+    "44": {
+      "events": {
+        "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "oldEpoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "newEpoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewEpoch",
+          "type": "event",
+          "signature": "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609"
+        },
+        "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "epoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewEpochCancelled",
+          "type": "event",
+          "signature": "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a"
+        },
+        "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "oldEpoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": true,
+              "name": "newEpoch",
+              "type": "uint256"
+            }
+          ],
+          "name": "NewFundsTransfer",
+          "type": "event",
+          "signature": "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b"
+        },
+        "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": true,
+              "name": "epoch",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "x",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "y",
+              "type": "uint256"
+            }
+          ],
+          "name": "EpochStart",
+          "type": "event",
+          "signature": "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c"
+        },
+        "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": false,
+              "name": "value",
+              "type": "uint256"
+            }
+          ],
+          "name": "ExchangeRequest",
+          "type": "event",
+          "signature": "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e"
+        },
+        "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02": {
+          "anonymous": false,
+          "inputs": [
+            {
+              "indexed": false,
+              "name": "value",
+              "type": "uint256"
+            },
+            {
+              "indexed": false,
+              "name": "nonce",
+              "type": "uint256"
+            }
+          ],
+          "name": "ExchangeRequest",
+          "type": "event",
+          "signature": "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02"
+        }
+      },
+      "links": {},
+      "address": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
+      "transactionHash": "0x912e1b3c5341609e1d0c0cd5d81ff6b7d9b2e8f497bd393ea91af1a4038cba78"
+    }
+  },
+  "schemaVersion": "3.0.11",
+  "updatedAt": "2019-10-28T13:22:54.868Z",
+  "devdoc": {
+    "methods": {}
+  },
+  "userdoc": {
+    "methods": {}
+  }
+}
\ No newline at end of file
diff --git a/src/oracle/proxy/Dockerfile b/src/oracle/proxy/Dockerfile
index e2cac6c..0e226c0 100644
--- a/src/oracle/proxy/Dockerfile
+++ b/src/oracle/proxy/Dockerfile
@@ -7,5 +7,6 @@ COPY ./proxy/package.json /proxy/
 RUN npm install
 
 COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./shared/logger.js ./shared/crypto.js /proxy/
+COPY ./proxy/Bridge.json ./proxy/IERC20.json ./proxy/SharedDB.json /proxy/contracts_data/
 
 ENTRYPOINT ["node", "index.js"]
diff --git a/src/oracle/proxy/IERC20.json b/src/oracle/proxy/IERC20.json
new file mode 100644
index 0000000..38bf614
--- /dev/null
+++ b/src/oracle/proxy/IERC20.json
@@ -0,0 +1,1884 @@
+{
+  "contractName": "IERC20",
+  "abi": [
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "from",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "name": "to",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Transfer",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Approval",
+      "type": "event"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "totalSupply",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "account",
+          "type": "address"
+        }
+      ],
+      "name": "balanceOf",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "transfer",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "name": "spender",
+          "type": "address"
+        }
+      ],
+      "name": "allowance",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "approve",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "sender",
+          "type": "address"
+        },
+        {
+          "name": "recipient",
+          "type": "address"
+        },
+        {
+          "name": "amount",
+          "type": "uint256"
+        }
+      ],
+      "name": "transferFrom",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "metadata": "{\"compiler\":{\"version\":\"0.5.9+commit.e560f70d\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"sender\",\"type\":\"address\"},{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}],\"devdoc\":{\"details\":\"Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.\",\"methods\":{\"allowance(address,address)\":{\"details\":\"Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called.\"},\"approve(address,uint256)\":{\"details\":\"Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event.\"},\"balanceOf(address)\":{\"details\":\"Returns the amount of tokens owned by `account`.\"},\"totalSupply()\":{\"details\":\"Returns the amount of tokens in existence.\"},\"transfer(address,uint256)\":{\"details\":\"Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":\"IERC20\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\",\"dweb:/ipfs/QmP5NaEwZthQeM2ESz4WTT3osrP7jhbvu7ocbttBi2JAw6\"]}},\"version\":1}",
+  "bytecode": "0x",
+  "deployedBytecode": "0x",
+  "sourceMap": "",
+  "deployedSourceMap": "",
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+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 8678,
+                  "indexed": true,
+                  "name": "to",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 8682,
+                  "src": "2459:18:113",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 8677,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "2459:7:113",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 8680,
+                  "indexed": false,
+                  "name": "value",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 8682,
+                  "src": "2479:13:113",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_uint256",
+                    "typeString": "uint256"
+                  },
+                  "typeName": {
+                    "id": 8679,
+                    "name": "uint256",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "2479:7:113",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_uint256",
+                      "typeString": "uint256"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "2436:57:113"
+            },
+            "src": "2422:72:113"
+          },
+          {
+            "anonymous": false,
+            "documentation": "@dev Emitted when the allowance of a `spender` for an `owner` is set by\na call to `approve`. `value` is the new allowance.",
+            "id": 8690,
+            "name": "Approval",
+            "nodeType": "EventDefinition",
+            "parameters": {
+              "id": 8689,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 8684,
+                  "indexed": true,
+                  "name": "owner",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 8690,
+                  "src": "2668:21:113",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 8683,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "2668:7:113",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 8686,
+                  "indexed": true,
+                  "name": "spender",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 8690,
+                  "src": "2691:23:113",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 8685,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "2691:7:113",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 8688,
+                  "indexed": false,
+                  "name": "value",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 8690,
+                  "src": "2716:13:113",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_uint256",
+                    "typeString": "uint256"
+                  },
+                  "typeName": {
+                    "id": 8687,
+                    "name": "uint256",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "2716:7:113",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_uint256",
+                      "typeString": "uint256"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "2667:63:113"
+            },
+            "src": "2653:78:113"
+          }
+        ],
+        "scope": 8692,
+        "src": "176:2557:113"
+      }
+    ],
+    "src": "0:2734:113"
+  },
+  "compiler": {
+    "name": "solc",
+    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
+  },
+  "networks": {},
+  "schemaVersion": "3.0.11",
+  "updatedAt": "2019-09-17T15:35:53.888Z",
+  "devdoc": {
+    "details": "Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.",
+    "methods": {
+      "allowance(address,address)": {
+        "details": "Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called."
+      },
+      "approve(address,uint256)": {
+        "details": "Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event."
+      },
+      "balanceOf(address)": {
+        "details": "Returns the amount of tokens owned by `account`."
+      },
+      "totalSupply()": {
+        "details": "Returns the amount of tokens in existence."
+      },
+      "transfer(address,uint256)": {
+        "details": "Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
+      },
+      "transferFrom(address,address,uint256)": {
+        "details": "Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
+      }
+    }
+  },
+  "userdoc": {
+    "methods": {}
+  }
+}
\ No newline at end of file
diff --git a/src/oracle/proxy/SharedDB.json b/src/oracle/proxy/SharedDB.json
new file mode 100644
index 0000000..9e3494b
--- /dev/null
+++ b/src/oracle/proxy/SharedDB.json
@@ -0,0 +1,6274 @@
+{
+  "contractName": "SharedDB",
+  "abi": [
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "dbSignups",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "signupsCount",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "name": "db",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bytes"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        }
+      ],
+      "name": "signupSign",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "validators",
+          "type": "address[]"
+        },
+        {
+          "name": "validator",
+          "type": "address"
+        }
+      ],
+      "name": "getSignupNumber",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "validators",
+          "type": "address[]"
+        },
+        {
+          "name": "signupNumber",
+          "type": "uint256"
+        }
+      ],
+      "name": "getSignupAddress",
+      "outputs": [
+        {
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "key",
+          "type": "bytes32"
+        },
+        {
+          "name": "data",
+          "type": "bytes"
+        }
+      ],
+      "name": "setData",
+      "outputs": [],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "from",
+          "type": "address"
+        },
+        {
+          "name": "hash",
+          "type": "bytes32"
+        },
+        {
+          "name": "key",
+          "type": "bytes32"
+        }
+      ],
+      "name": "getData",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bytes"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ],
+  "metadata": "{\"compiler\":{\"version\":\"0.5.9+commit.e560f70d\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"signupNumber\",\"type\":\"uint256\"}],\"name\":\"getSignupAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"key\",\"type\":\"bytes32\"}],\"name\":\"getData\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"}],\"name\":\"signupSign\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"dbSignups\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"signupsCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"validator\",\"type\":\"address\"}],\"name\":\"getSignupNumber\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"db\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"key\",\"type\":\"bytes32\"},{\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"setData\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/SharedDB.sol\":\"SharedDB\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/SharedDB.sol\":{\"keccak256\":\"0x94e823a0aa4d7aaca55e82121659cc162ce5ee7772b98e3d0c983b65ebabe22b\",\"urls\":[\"bzzr://ad1ac5702de081e8516595760054a0b4d8eaab39b75a002554ddb43ae738f37b\",\"dweb:/ipfs/QmRLrhNxxeoeJKpLpT2CakVxkmwuRQuvyVjZjF6cqKkz4f\"]}},\"version\":1}",
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+  "source": "pragma solidity ^0.5.0;\n\ncontract SharedDB {\n    mapping(bytes32 => bytes) public db;\n    mapping(bytes32 => uint) public signupsCount;\n    mapping(bytes32 => uint) public dbSignups;\n\n    function signupSign(bytes32 hash) public {\n        require(dbSignups[keccak256(abi.encodePacked(msg.sender, hash))] == 0, \"Already signuped\");\n\n        dbSignups[keccak256(abi.encodePacked(msg.sender, hash))] = ++signupsCount[hash];\n    }\n\n    function getSignupNumber(bytes32 hash, address[] memory validators, address validator) view public returns (uint) {\n        if (dbSignups[keccak256(abi.encodePacked(validator, hash))] == 0)\n            return 0;\n        uint id = 1;\n        for (uint i = 0; i < validators.length; i++) {\n            uint vid = dbSignups[keccak256(abi.encodePacked(validators[i], hash))];\n            if (vid > 0 && vid < dbSignups[keccak256(abi.encodePacked(validator, hash))])\n                id++;\n        }\n        return id;\n    }\n\n    function getSignupAddress(bytes32 hash, address[] memory validators, uint signupNumber) view public returns (address) {\n        for (uint i = 0; i < validators.length; i++) {\n            if (getSignupNumber(hash, validators, validators[i]) == signupNumber) {\n                return validators[i];\n            }\n        }\n        return address(0);\n    }\n\n    function setData(bytes32 hash, bytes32 key, bytes memory data) public {\n        db[keccak256(abi.encodePacked(msg.sender, hash, key))] = data;\n    }\n\n    function getData(address from, bytes32 hash, bytes32 key) view public returns (bytes memory) {\n        return db[keccak256(abi.encodePacked(from, hash, key))];\n    }\n}\n",
+  "sourcePath": "/build/contracts/SharedDB.sol",
+  "ast": {
+    "absolutePath": "/build/contracts/SharedDB.sol",
+    "exportedSymbols": {
+      "SharedDB": [
+        280
+      ]
+    },
+    "id": 281,
+    "nodeType": "SourceUnit",
+    "nodes": [
+      {
+        "id": 58,
+        "literals": [
+          "solidity",
+          "^",
+          "0.5",
+          ".0"
+        ],
+        "nodeType": "PragmaDirective",
+        "src": "0:23:1"
+      },
+      {
+        "baseContracts": [],
+        "contractDependencies": [],
+        "contractKind": "contract",
+        "documentation": null,
+        "fullyImplemented": true,
+        "id": 280,
+        "linearizedBaseContracts": [
+          280
+        ],
+        "name": "SharedDB",
+        "nodeType": "ContractDefinition",
+        "nodes": [
+          {
+            "constant": false,
+            "id": 62,
+            "name": "db",
+            "nodeType": "VariableDeclaration",
+            "scope": 280,
+            "src": "49:35:1",
+            "stateVariable": true,
+            "storageLocation": "default",
+            "typeDescriptions": {
+              "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes_storage_$",
+              "typeString": "mapping(bytes32 => bytes)"
+            },
+            "typeName": {
+              "id": 61,
+              "keyType": {
+                "id": 59,
+                "name": "bytes32",
+                "nodeType": "ElementaryTypeName",
+                "src": "57:7:1",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_bytes32",
+                  "typeString": "bytes32"
+                }
+              },
+              "nodeType": "Mapping",
+              "src": "49:25:1",
+              "typeDescriptions": {
+                "typeIdentifier": "t_mapping$_t_bytes32_$_t_bytes_storage_$",
+                "typeString": "mapping(bytes32 => bytes)"
+              },
+              "valueType": {
+                "id": 60,
+                "name": "bytes",
+                "nodeType": "ElementaryTypeName",
+                "src": "68:5:1",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_bytes_storage_ptr",
+                  "typeString": "bytes"
+                }
+              }
+            },
+            "value": null,
+            "visibility": "public"
+          },
+          {
+            "constant": false,
+            "id": 66,
+            "name": "signupsCount",
+            "nodeType": "VariableDeclaration",
+            "scope": 280,
+            "src": "90:44:1",
+            "stateVariable": true,
+            "storageLocation": "default",
+            "typeDescriptions": {
+              "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
+              "typeString": "mapping(bytes32 => uint256)"
+            },
+            "typeName": {
+              "id": 65,
+              "keyType": {
+                "id": 63,
+                "name": "bytes32",
+                "nodeType": "ElementaryTypeName",
+                "src": "98:7:1",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_bytes32",
+                  "typeString": "bytes32"
+                }
+              },
+              "nodeType": "Mapping",
+              "src": "90:24:1",
+              "typeDescriptions": {
+                "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
+                "typeString": "mapping(bytes32 => uint256)"
+              },
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+                "name": "uint",
+                "nodeType": "ElementaryTypeName",
+                "src": "109:4:1",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_uint256",
+                  "typeString": "uint256"
+                }
+              }
+            },
+            "value": null,
+            "visibility": "public"
+          },
+          {
+            "constant": false,
+            "id": 70,
+            "name": "dbSignups",
+            "nodeType": "VariableDeclaration",
+            "scope": 280,
+            "src": "140:41:1",
+            "stateVariable": true,
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+              "typeString": "mapping(bytes32 => uint256)"
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+                "src": "148:7:1",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_bytes32",
+                  "typeString": "bytes32"
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+                  "typeIdentifier": "t_uint256",
+                  "typeString": "uint256"
+                }
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+              "nodeType": "Block",
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+                                      "src": "284:3:1",
+                                      "typeDescriptions": {
+                                        "typeIdentifier": "t_magic_message",
+                                        "typeString": "msg"
+                                      }
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+                                    "isConstant": false,
+                                    "isLValue": false,
+                                    "isPure": false,
+                                    "lValueRequested": false,
+                                    "memberName": "sender",
+                                    "nodeType": "MemberAccess",
+                                    "referencedDeclaration": null,
+                                    "src": "284:10:1",
+                                    "typeDescriptions": {
+                                      "typeIdentifier": "t_address_payable",
+                                      "typeString": "address payable"
+                                    }
+                                  },
+                                  {
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+                                    "name": "hash",
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+                              "referencedDeclaration": 262,
+                              "src": "1621:3:1",
+                              "typeDescriptions": {
+                                "typeIdentifier": "t_bytes32",
+                                "typeString": "bytes32"
+                              }
+                            }
+                          ],
+                          "expression": {
+                            "argumentTypes": [
+                              {
+                                "typeIdentifier": "t_address",
+                                "typeString": "address"
+                              },
+                              {
+                                "typeIdentifier": "t_bytes32",
+                                "typeString": "bytes32"
+                              },
+                              {
+                                "typeIdentifier": "t_bytes32",
+                                "typeString": "bytes32"
+                              }
+                            ],
+                            "expression": {
+                              "argumentTypes": null,
+                              "id": 269,
+                              "name": "abi",
+                              "nodeType": "Identifier",
+                              "overloadedDeclarations": [],
+                              "referencedDeclaration": 282,
+                              "src": "1592:3:1",
+                              "typeDescriptions": {
+                                "typeIdentifier": "t_magic_abi",
+                                "typeString": "abi"
+                              }
+                            },
+                            "id": 270,
+                            "isConstant": false,
+                            "isLValue": false,
+                            "isPure": true,
+                            "lValueRequested": false,
+                            "memberName": "encodePacked",
+                            "nodeType": "MemberAccess",
+                            "referencedDeclaration": null,
+                            "src": "1592:16:1",
+                            "typeDescriptions": {
+                              "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
+                              "typeString": "function () pure returns (bytes memory)"
+                            }
+                          },
+                          "id": 274,
+                          "isConstant": false,
+                          "isLValue": false,
+                          "isPure": false,
+                          "kind": "functionCall",
+                          "lValueRequested": false,
+                          "names": [],
+                          "nodeType": "FunctionCall",
+                          "src": "1592:33:1",
+                          "typeDescriptions": {
+                            "typeIdentifier": "t_bytes_memory_ptr",
+                            "typeString": "bytes memory"
+                          }
+                        }
+                      ],
+                      "expression": {
+                        "argumentTypes": [
+                          {
+                            "typeIdentifier": "t_bytes_memory_ptr",
+                            "typeString": "bytes memory"
+                          }
+                        ],
+                        "id": 268,
+                        "name": "keccak256",
+                        "nodeType": "Identifier",
+                        "overloadedDeclarations": [],
+                        "referencedDeclaration": 289,
+                        "src": "1582:9:1",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
+                          "typeString": "function (bytes memory) pure returns (bytes32)"
+                        }
+                      },
+                      "id": 275,
+                      "isConstant": false,
+                      "isLValue": false,
+                      "isPure": false,
+                      "kind": "functionCall",
+                      "lValueRequested": false,
+                      "names": [],
+                      "nodeType": "FunctionCall",
+                      "src": "1582:44:1",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_bytes32",
+                        "typeString": "bytes32"
+                      }
+                    },
+                    "isConstant": false,
+                    "isLValue": true,
+                    "isPure": false,
+                    "lValueRequested": false,
+                    "nodeType": "IndexAccess",
+                    "src": "1579:48:1",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes_storage",
+                      "typeString": "bytes storage ref"
+                    }
+                  },
+                  "functionReturnParameters": 266,
+                  "id": 277,
+                  "nodeType": "Return",
+                  "src": "1572:55:1"
+                }
+              ]
+            },
+            "documentation": null,
+            "id": 279,
+            "implemented": true,
+            "kind": "function",
+            "modifiers": [],
+            "name": "getData",
+            "nodeType": "FunctionDefinition",
+            "parameters": {
+              "id": 263,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 258,
+                  "name": "from",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 279,
+                  "src": "1486:12:1",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 257,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1486:7:1",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 260,
+                  "name": "hash",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 279,
+                  "src": "1500:12:1",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 259,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1500:7:1",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 262,
+                  "name": "key",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 279,
+                  "src": "1514:11:1",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 261,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1514:7:1",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "1485:41:1"
+            },
+            "returnParameters": {
+              "id": 266,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 265,
+                  "name": "",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 279,
+                  "src": "1548:12:1",
+                  "stateVariable": false,
+                  "storageLocation": "memory",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes_memory_ptr",
+                    "typeString": "bytes"
+                  },
+                  "typeName": {
+                    "id": 264,
+                    "name": "bytes",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1548:5:1",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes_storage_ptr",
+                      "typeString": "bytes"
+                    }
+                  },
+                  "value": null,
+                  "visibility": "internal"
+                }
+              ],
+              "src": "1547:14:1"
+            },
+            "scope": 280,
+            "src": "1469:165:1",
+            "stateMutability": "view",
+            "superFunction": null,
+            "visibility": "public"
+          }
+        ],
+        "scope": 281,
+        "src": "25:1611:1"
+      }
+    ],
+    "src": "0:1637:1"
+  },
+  "compiler": {
+    "name": "solc",
+    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
+  },
+  "networks": {
+    "33": {
+      "events": {},
+      "links": {},
+      "address": "0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc",
+      "transactionHash": "0xfc024dbdc05c6deb0bd921701809dec226f03100b24e7a91d8de4ccb76467f21"
+    }
+  },
+  "schemaVersion": "3.0.11",
+  "updatedAt": "2019-10-28T13:23:05.363Z",
+  "devdoc": {
+    "methods": {}
+  },
+  "userdoc": {
+    "methods": {}
+  }
+}
\ No newline at end of file
diff --git a/src/oracle/redis/Dockerfile b/src/oracle/redis/Dockerfile
new file mode 100644
index 0000000..1c50b38
--- /dev/null
+++ b/src/oracle/redis/Dockerfile
@@ -0,0 +1,5 @@
+FROM redis:5.0.5-alpine
+
+COPY ./redis/redis.conf /usr/local/etc/redis/
+
+CMD ["redis-server", "/usr/local/etc/redis/redis.conf"]
diff --git a/src/oracle/configs/redis.conf b/src/oracle/redis/redis.conf
similarity index 100%
rename from src/oracle/configs/redis.conf
rename to src/oracle/redis/redis.conf

From 43cda189eacd271f1caa8fafc0005f839370467e Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 19:14:57 +0300
Subject: [PATCH 024/129] Replaced mkdir with mkdir -p

---
 .circleci/config.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 24d16e7..4d73554 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -27,7 +27,7 @@ orbs:
           - run:
               name: "Backup blockchains data using temporary container"
               command: |
-                mkdir ./workspace
+                mkdir -p ./workspace
                 docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
                 docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
                 docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
@@ -55,13 +55,14 @@ orbs:
           - restore_cache:
               name: "Restore tss image from cache"
               key: "tss-v1-{{ .Branch }}"
+          - load_tss
       save_tss:
         description: "Save tss image to workspace"
         steps:
           - run:
               name: "Save tss image to archive"
               command: |
-                mkdir ./workspace
+                mkdir -p ./workspace
                 docker save tss | gzip > ./workspace/tss.tar.gz
           - persist_to_workspace:
               name: "Save tss image to workspace"

From ceb370a217871cab79ac30b9637e34d10ec66fc5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 21:22:48 +0300
Subject: [PATCH 025/129] Trying to figure out why eth watcher does not work
 properly on CI env

---
 .circleci/config.yml                | 4 ++++
 src/oracle/ethWatcher/ethWatcher.js | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 4d73554..38627e7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -197,6 +197,10 @@ jobs:
       - run:
           name: "Run tests"
           command: docker start -a tests
+      - run:
+          name: "Check alive docker containers"
+          command: docker ps
+          when: always
       - bridge/save_artifacts
 workflows:
   version: 2
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index cc4bb4f..9de806e 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -12,6 +12,8 @@ const abiBridge = require('./contracts_data/Bridge.json').abi
 
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
+logger.debug('%o', process.env)
+
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
 const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
@@ -94,6 +96,7 @@ async function initialize () {
     blockNumber = saved
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`)) || 0
   }
+  logger.debug('Checking if current validator')
   isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)

From cee521f079f6fb623ab69d0f78880110ac8c8180 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 23:25:45 +0300
Subject: [PATCH 026/129] Trying to figure out why eth watcher does not work
 properly on CI env 2

---
 src/oracle/ethWatcher/Dockerfile    | 2 +-
 src/oracle/ethWatcher/ethWatcher.js | 7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/oracle/ethWatcher/Dockerfile b/src/oracle/ethWatcher/Dockerfile
index fa11564..2eb0bfa 100644
--- a/src/oracle/ethWatcher/Dockerfile
+++ b/src/oracle/ethWatcher/Dockerfile
@@ -10,6 +10,6 @@ COPY ./ethWatcher/package.json /watcher/
 RUN npm install
 
 COPY ./ethWatcher/ethWatcher.js ./shared/db.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js /watcher/
-COPY ./proxy/Bridge.json /watcher/contracts_data/
+COPY ./ethWatcher/Bridge.json /watcher/contracts_data/
 
 ENTRYPOINT ["node", "ethWatcher.js"]
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 9de806e..db444a0 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -10,9 +10,12 @@ const { publicKeyToAddress } = require('./crypto')
 
 const abiBridge = require('./contracts_data/Bridge.json').abi
 
-const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
+logger.debug('%o', abiBridge)
+setInterval(() => {
+  logger.debug("alive", 5000)
+})
 
-logger.debug('%o', process.env)
+const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)

From e29ea876f5f8c6980daa63e59c315ddfc658af7e Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 28 Oct 2019 23:29:58 +0300
Subject: [PATCH 027/129] Trying to figure out why eth watcher does not work
 properly on CI env 3

---
 .circleci/config.yml                | 2 ++
 src/oracle/ethWatcher/ethWatcher.js | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 38627e7..527b6b9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -49,6 +49,8 @@ orbs:
                 docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
                 docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
                 docker kill tmp
+                ls ./workspace/ganache_side_data
+                ls ./workspace/ganache_home_data
       restore_tss_image:
         description: "Restores tss image from cache"
         steps:
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index db444a0..9ffbe34 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -12,8 +12,8 @@ const abiBridge = require('./contracts_data/Bridge.json').abi
 
 logger.debug('%o', abiBridge)
 setInterval(() => {
-  logger.debug("alive", 5000)
-})
+  logger.debug("alive")
+}, 5000)
 
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 

From adbb1f09c746a194a427ee2740d2c2170e22951b Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 12:41:41 +0300
Subject: [PATCH 028/129] Trying to figure out why eth watcher does not work
 properly on CI env 4

---
 src/oracle/ethWatcher/ethWatcher.js | 14 +++++++++-----
 src/oracle/proxy/index.js           |  7 +++++--
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 9ffbe34..b64b9ef 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -10,13 +10,17 @@ const { publicKeyToAddress } = require('./crypto')
 
 const abiBridge = require('./contracts_data/Bridge.json').abi
 
-logger.debug('%o', abiBridge)
-setInterval(() => {
-  logger.debug("alive")
-}, 5000)
-
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
+setInterval(() => {
+  axios.post(HOME_RPC_URL, {
+    jsonrpc: '2.0',
+    method: "eth_blockNumber",
+    params: [],
+    id: 1
+  }).then(console.log, console.log)
+}, 5000)
+
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
 const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index cc505a6..00eba0c 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -336,7 +336,7 @@ async function info (req, res) {
     ])
     const foreignAddress = publicKeyToAddress({ x, y })
     const balances = await getForeignBalances(foreignAddress)
-    res.send({
+    const msg = {
       epoch,
       rangeSize,
       nextRangeSize,
@@ -357,8 +357,11 @@ async function info (req, res) {
       votesForKeygen,
       votesForCancelKeygen,
       confirmationsForFundsTransfer
-    })
+    }
+    logger.debug('%o', msg)
+    res.send(msg)
   } catch (e) {
+    logger.debug('%o', { message: 'Something went wrong, resend request', error: e })
     res.send({ message: 'Something went wrong, resend request', error: e })
   }
   logger.debug('Info end')

From 935b8c87a8199afe2af661d950a545d7dbe2cc07 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 13:19:32 +0300
Subject: [PATCH 029/129] Trying to figure out why eth watcher does not work
 properly on CI env 5

---
 .circleci/config.yml                |  2 --
 demo/start-environment.sh           |  4 ++--
 src/oracle/ethWatcher/ethWatcher.js | 24 +++++++++++++++---------
 tests/.mocharc.yml                  |  1 +
 4 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 527b6b9..38627e7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -49,8 +49,6 @@ orbs:
                 docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
                 docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
                 docker kill tmp
-                ls ./workspace/ganache_side_data
-                ls ./workspace/ganache_home_data
       restore_tss_image:
         description: "Restores tss image from cache"
         steps:
diff --git a/demo/start-environment.sh b/demo/start-environment.sh
index 2a3b775..760c6f3 100755
--- a/demo/start-environment.sh
+++ b/demo/start-environment.sh
@@ -22,7 +22,7 @@ start_dev_blockchain_networks() {
   docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" \
       -p "7545:8545" \
       trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 -q --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
+      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
 
   echo "Starting home test blockchain"
 
@@ -32,7 +32,7 @@ start_dev_blockchain_networks() {
   docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" \
       -p "8545:8545" \
       trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 -q --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
+      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
 
   sleep 4
 }
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index b64b9ef..3eb9878 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -12,14 +12,12 @@ const abiBridge = require('./contracts_data/Bridge.json').abi
 
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
-setInterval(() => {
-  axios.post(HOME_RPC_URL, {
-    jsonrpc: '2.0',
-    method: "eth_blockNumber",
-    params: [],
-    id: 1
-  }).then(console.log, console.log)
-}, 5000)
+axios.post(HOME_RPC_URL, {
+  jsonrpc: '2.0',
+  method: 'eth_getCode',
+  params: [ HOME_BRIDGE_ADDRESS, 'latest' ],
+  id: 1
+}).then(x => console.log(x.data), console.log)
 
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
@@ -104,7 +102,15 @@ async function initialize () {
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`)) || 0
   }
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
+  let currentValidators = []
+  try {
+    logger.debug('1')
+    currentValidators = await bridge.methods.getValidators().call()
+    logger.debug('2')
+  } catch (e) {
+    logger.debug('%o', e)
+  }
+  isCurrentValidator = (currentValidators).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
diff --git a/tests/.mocharc.yml b/tests/.mocharc.yml
index b43d42d..f085534 100644
--- a/tests/.mocharc.yml
+++ b/tests/.mocharc.yml
@@ -1,3 +1,4 @@
+exit: true
 reporter: mocha-multi-reporters
 reporter-option:
   - configFile=./reportersConfig.json

From adba55bae00234118f4c07c609079d7ca40c4d16 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 13:57:41 +0300
Subject: [PATCH 030/129] Added more debug logs

---
 .circleci/config.yml                | 16 +++++++++++++++-
 src/oracle/ethWatcher/ethWatcher.js |  3 +++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 38627e7..1d40699 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -32,6 +32,10 @@ orbs:
                 docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
                 docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
                 docker kill tmp
+                du -sh ./workspace/ganache_side_data
+                du -sh ./workspace/ganache_home_data
+                ls ./workspace/ganache_side_data
+                ls ./workspace/ganache_home_data
           - persist_to_workspace:
               root: ./workspace
               paths:
@@ -43,6 +47,10 @@ orbs:
           - run:
               name: "Restore blockchains data from backup using temporary container"
               command: |
+                du -sh ./workspace/ganache_side_data
+                du -sh ./workspace/ganache_home_data
+                ls ./workspace/ganache_side_data
+                ls ./workspace/ganache_home_data
                 docker volume create ganache_side_data
                 docker volume create ganache_home_data
                 docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
@@ -149,8 +157,11 @@ jobs:
       - run:
           name: "Run dev environment, deploy contracts, prefund accounts"
           command: |
-            BLOCK_TIME=1 ./demo/start-environment.sh
+            BLOCK_TIME=3 ./demo/start-environment.sh
             cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
+      - run:
+          name: "Get bridge deployed code"
+          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0x44c158FE850821ae69DaF37AADF5c539e9d0025B", "latest"],"id":1} http://ganache_home:8545"
       - run:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
@@ -177,6 +188,9 @@ jobs:
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
             docker ps
+      - run:
+          name: "Get bridge deployed code"
+          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0x44c158FE850821ae69DaF37AADF5c539e9d0025B", "latest"],"id":1} http://ganache_home:8545"
       - run:
           name: "Wait until validator nodes are ready"
           command: |
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 3eb9878..b87f100 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -12,6 +12,7 @@ const abiBridge = require('./contracts_data/Bridge.json').abi
 
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
+logger.debug(`${HOME_RPC_URL} ${HOME_BRIDGE_ADDRESS}`)
 axios.post(HOME_RPC_URL, {
   jsonrpc: '2.0',
   method: 'eth_getCode',
@@ -107,10 +108,12 @@ async function initialize () {
     logger.debug('1')
     currentValidators = await bridge.methods.getValidators().call()
     logger.debug('2')
+    logger.debug('%o', currentValidators)
   } catch (e) {
     logger.debug('%o', e)
   }
   isCurrentValidator = (currentValidators).includes(validatorAddress)
+  logger.debug(`${isCurrentValidator}`)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {

From 4db5f2ac93b2ee98513cea78f3d448699530ddf5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 17:28:28 +0300
Subject: [PATCH 031/129] Added more debug logs 2

---
 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1d40699..7ab69ae 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -161,7 +161,7 @@ jobs:
             cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
       - run:
           name: "Get bridge deployed code"
-          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0x44c158FE850821ae69DaF37AADF5c539e9d0025B", "latest"],"id":1} http://ganache_home:8545"
+          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data \{\"jsonrpc\":\"2.0\",\"method\":\"eth_getCode\",\"params\":[\"0x44c158FE850821ae69DaF37AADF5c539e9d0025B\",\"latest\"],\"id\":1\} http://ganache_home:8545"
       - run:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
@@ -190,7 +190,7 @@ jobs:
             docker ps
       - run:
           name: "Get bridge deployed code"
-          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0x44c158FE850821ae69DaF37AADF5c539e9d0025B", "latest"],"id":1} http://ganache_home:8545"
+          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data \{\"jsonrpc\":\"2.0\",\"method\":\"eth_getCode\",\"params\":[\"0x44c158FE850821ae69DaF37AADF5c539e9d0025B\",\"latest\"],\"id\":1\} http://ganache_home:8545"
       - run:
           name: "Wait until validator nodes are ready"
           command: |

From de76a1aaadec9c47e6de6d556155258e0ccfc246 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 18:24:38 +0300
Subject: [PATCH 032/129] Eth watcher should now work on ci env

---
 .circleci/config.yml                | 25 ++++++-------------------
 src/oracle/ethWatcher/ethWatcher.js | 13 ++-----------
 src/oracle/proxy/index.js           |  4 ++--
 3 files changed, 10 insertions(+), 32 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7ab69ae..0da713c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -27,15 +27,12 @@ orbs:
           - run:
               name: "Backup blockchains data using temporary container"
               command: |
-                mkdir -p ./workspace
+                mkdir -p ./workspace/ganache_side_data
+                mkdir -p ./workspace/ganache_home_data
                 docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
-                docker cp "tmp:/ganache_side_data" "./workspace/ganache_side_data"
-                docker cp "tmp:/ganache_home_data" "./workspace/ganache_home_data"
+                docker cp "tmp:/ganache_side_data/." "./workspace/ganache_side_data"
+                docker cp "tmp:/ganache_home_data/." "./workspace/ganache_home_data"
                 docker kill tmp
-                du -sh ./workspace/ganache_side_data
-                du -sh ./workspace/ganache_home_data
-                ls ./workspace/ganache_side_data
-                ls ./workspace/ganache_home_data
           - persist_to_workspace:
               root: ./workspace
               paths:
@@ -47,15 +44,11 @@ orbs:
           - run:
               name: "Restore blockchains data from backup using temporary container"
               command: |
-                du -sh ./workspace/ganache_side_data
-                du -sh ./workspace/ganache_home_data
-                ls ./workspace/ganache_side_data
-                ls ./workspace/ganache_home_data
                 docker volume create ganache_side_data
                 docker volume create ganache_home_data
                 docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
-                docker cp "./workspace/ganache_side_data" "tmp:/ganache_side_data"
-                docker cp "./workspace/ganache_home_data" "tmp:/ganache_home_data"
+                docker cp "./workspace/ganache_side_data/." "tmp:/ganache_side_data"
+                docker cp "./workspace/ganache_home_data/." "tmp:/ganache_home_data"
                 docker kill tmp
       restore_tss_image:
         description: "Restores tss image from cache"
@@ -159,9 +152,6 @@ jobs:
           command: |
             BLOCK_TIME=3 ./demo/start-environment.sh
             cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
-      - run:
-          name: "Get bridge deployed code"
-          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data \{\"jsonrpc\":\"2.0\",\"method\":\"eth_getCode\",\"params\":[\"0x44c158FE850821ae69DaF37AADF5c539e9d0025B\",\"latest\"],\"id\":1\} http://ganache_home:8545"
       - run:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
@@ -188,9 +178,6 @@ jobs:
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
             docker ps
-      - run:
-          name: "Get bridge deployed code"
-          command: docker run --network blockchain_home --entrypoint ash appropriate/curl:latest -c "curl -X POST --data \{\"jsonrpc\":\"2.0\",\"method\":\"eth_getCode\",\"params\":[\"0x44c158FE850821ae69DaF37AADF5c539e9d0025B\",\"latest\"],\"id\":1\} http://ganache_home:8545"
       - run:
           name: "Wait until validator nodes are ready"
           command: |
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index b87f100..aec54e3 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -103,16 +103,7 @@ async function initialize () {
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`)) || 0
   }
   logger.debug('Checking if current validator')
-  let currentValidators = []
-  try {
-    logger.debug('1')
-    currentValidators = await bridge.methods.getValidators().call()
-    logger.debug('2')
-    logger.debug('%o', currentValidators)
-  } catch (e) {
-    logger.debug('%o', e)
-  }
-  isCurrentValidator = (currentValidators).includes(validatorAddress)
+  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
   logger.debug(`${isCurrentValidator}`)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
@@ -183,7 +174,7 @@ initialize().then(async () => {
   while (true) {
     await main()
   }
-})
+}, e => logger.warn('Initialization failed %o', e))
 
 async function sendKeygen (event) {
   const newEpoch = event.returnValues.newEpoch.toNumber()
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 00eba0c..8fb3454 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -358,10 +358,10 @@ async function info (req, res) {
       votesForCancelKeygen,
       confirmationsForFundsTransfer
     }
-    logger.debug('%o', msg)
+    logger.trace('%o', msg)
     res.send(msg)
   } catch (e) {
-    logger.debug('%o', { message: 'Something went wrong, resend request', error: e })
+    logger.debug('%o', e)
     res.send({ message: 'Something went wrong, resend request', error: e })
   }
   logger.debug('Info end')

From 592663aeac95ee3637a4792b074a433e04a2e341 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 18:47:21 +0300
Subject: [PATCH 033/129] Fixed unnecessary --rm

---
 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0da713c..e14745e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,7 +13,7 @@ orbs:
         steps:
           - checkout
           - run:
-              name: "Initializing submodules"
+              name: "Initialize submodules"
               command: git submodule update --init
       setup_docker:
         description: "Set up remote docker engine"
@@ -189,7 +189,7 @@ jobs:
           name: "Build and prepare tests container"
           command: |
             docker build -t tests ./tests
-            docker create --rm --env-file ./tests/.env -e FOREIGN_PRIVATE_KEY --name tests tests
+            docker create --env-file ./tests/.env -e FOREIGN_PRIVATE_KEY --name tests tests
             docker network connect blockchain_side tests
             docker network connect blockchain_home tests
             docker network connect validator1_test_network tests

From 003a59c6aecce142c2245de13b6ecffd7b4fe0d9 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 21:07:11 +0300
Subject: [PATCH 034/129] Wrote tests for removing validator

---
 tests/.mocharc.yml       |   2 +
 tests/config.json        |   5 ++
 tests/test/bncToEth.js   |   2 -
 tests/test/ethToBnc.js   |   9 +---
 tests/test/index.js      | 109 ++++++++++++++++++++++++++++++++++++---
 tests/test/utils/user.js |   2 +
 6 files changed, 113 insertions(+), 16 deletions(-)

diff --git a/tests/.mocharc.yml b/tests/.mocharc.yml
index f085534..c7ff00a 100644
--- a/tests/.mocharc.yml
+++ b/tests/.mocharc.yml
@@ -1,4 +1,6 @@
 exit: true
+timeout: 60000
+bail: true
 reporter: mocha-multi-reporters
 reporter-option:
   - configFile=./reportersConfig.json
diff --git a/tests/config.json b/tests/config.json
index fa49f75..8307d15 100644
--- a/tests/config.json
+++ b/tests/config.json
@@ -15,5 +15,10 @@
       "ethAddress": "0xad6c8127143032d843a260c5d379d8d9b3d51f15",
       "bncAddress": "tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4"
     }
+  ],
+  "validators": [
+    "0x99Eb3D86663c6Db090eFFdBC20510Ca9f836DCE3",
+    "0xAa006899B0EC407De930bA8A166DEfe59bBfd3DC",
+    "0x6352e3e6038e05b9da00C84AE851308f9774F883"
   ]
 }
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 303ce4e..5d9d1fc 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -7,7 +7,6 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     let ethBalances
 
     before(async function () {
-      this.timeout(60000)
       users = usersFunc()
       foreignBridgeAddress = foreignBridgeAddressFunc()
       ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
@@ -16,7 +15,6 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     })
 
     it('should make coorect exchange transactions on eth side', async function () {
-      this.timeout(60000)
       for (let i = 0; i < 3; i++) {
         do {
           const user = users[i]
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 25a7fd3..f442263 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -2,8 +2,6 @@ const assert = require('assert')
 const { getSequence } = require('./utils/bncController')
 const { waitPromise } = require('./utils/wait')
 
-const usersConfig = require('../config').users
-
 const { HOME_BRIDGE_ADDRESS } = process.env
 
 module.exports = (usersFunc, foreignBridgeAddressFunc) => {
@@ -15,7 +13,6 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     let bncBridgeSequence
 
     before(async function () {
-      this.timeout(60000)
       users = usersFunc()
       foreignBridgeAddress = foreignBridgeAddressFunc()
       ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
@@ -26,11 +23,10 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     })
 
     it('should accept exchange requests', async function () {
-      this.timeout(60000)
       await Promise.all(users.map((user, i) => user.exchangeEth(5 + i)))
       const newEthBalances = await Promise.all(users.map(user => user.getEthBalance()))
       for (let i = 0; i < 3; i++) {
-        assert(newEthBalances[i] === ethBalances[i] - 5 - i, `Balance of ${usersConfig[i].ethAddress} did not updated as expected`)
+        assert.strictEqual(newEthBalances[i], ethBalances[i] - 5 - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
       }
     })
 
@@ -40,10 +36,9 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     })
 
     it('should make correct exchange transaction', async function () {
-      this.timeout(60000)
       const newBncBalances = await Promise.all(users.map(user => user.getBncBalance()))
       for (let i = 0; i < 3; i++) {
-        assert(newBncBalances[i] === bncBalances[i] + 5 + i, `Balance of ${usersConfig[i].bncAddress} did not updated as expected`)
+        assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
       }
     })
   })
diff --git a/tests/test/index.js b/tests/test/index.js
index a6dafec..0b3628b 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -1,43 +1,138 @@
+const assert = require('assert')
+
 const createController = require('./utils/proxyController')
 const createUser = require('./utils/user')
-const { waitPromise } = require('./utils/wait')
+const { waitPromise, delay } = require('./utils/wait')
+const { getBalance } = require('./utils/bncController')
 
 const testEthToBnc = require('./ethToBnc')
 const testBncToEth = require('./bncToEth')
 
 const usersConfig = require('../config').users
+const validatorsConfig = require('../config').validators
 
 const { FOREIGN_PRIVATE_KEY } = process.env
 
-let { getInfo } = createController(1)
+const controller1 = createController(1)
+const controller2 = createController(2)
+const controller3 = createController(3)
 
 describe('bridge tests', function () {
   let users
   let foreignPrefundedUser
   let info
+  let prevForeignBridgeBalance
+  let prevForeignBridgeAddress
 
-  before(async function() {
-    this.timeout(60000)
+  before(async function () {
     users = await usersConfig.seqMap(user => createUser(user.privateKey))
   })
 
   describe('generation of initial epoch keys', function () {
     before(async function () {
-      this.timeout(60000)
       foreignPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
     })
 
     it('should generate keys', async function () {
       this.timeout(120000)
-      info = await waitPromise(getInfo, info => info.epoch === 1)
+      info = await waitPromise(controller1.getInfo, info => info.epoch === 1)
     })
 
     after(async function () {
-      this.timeout(60000)
       await foreignPrefundedUser.transferBnc(info.foreignBridgeAddress, 50, 0.1)
     })
   })
 
   testEthToBnc(() => users, () => info.foreignBridgeAddress)
   testBncToEth(() => users, () => info.foreignBridgeAddress)
+
+  describe('remove validator', function () {
+    before(function () {
+      prevForeignBridgeBalance = info.foreignBalanceTokens
+      prevForeignBridgeAddress = info.foreignBridgeAddress
+    })
+
+    it('should start voting process', async function () {
+      await controller1.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
+
+      await controller2.voteStartVoting()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Next validators are not set correctly')
+
+      await controller3.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should remove validator', async function () {
+      await controller1.voteRemoveValidator(validatorsConfig[1])
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Next validators are not set correctly')
+
+      await controller2.voteRemoveValidator(validatorsConfig[1])
+      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === 2)
+      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Next validators are not set correctly')
+
+      await controller3.voteRemoveValidator(validatorsConfig[1])
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of next validators after third vote')
+    })
+
+    it('should start keygen process', async function () {
+      await controller1.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+
+      await controller2.voteStartKeygen()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+
+      await controller3.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of next validators after third vote')
+    })
+
+    it('should finish keygen process and start funds transfer', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+    })
+
+    it('should transfer all funds to new account and start new epoch', async function () {
+      this.timeout(300000)
+      info = await waitPromise(controller1.getInfo, info => info.epoch === 2)
+      assert.deepStrictEqual(info.validators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of validators in epoch 2')
+      assert.strictEqual(info.nextEpoch, 2, 'Incorrect next epoch')
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
+      const prevBalance = await getBalance(prevForeignBridgeAddress)
+      const newBalance = await getBalance(info.foreignBridgeAddress)
+      assert.strictEqual(prevBalance, 0, "Did not transfer all funds")
+      assert.strictEqual(newBalance, prevForeignBridgeBalance, "Funds are lost somewhere")
+    })
+  })
+
+  testEthToBnc(() => users, () => info.foreignBridgeAddress)
+  testBncToEth(() => users, () => info.foreignBridgeAddress)
 })
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
index c2889a3..8294581 100644
--- a/tests/test/utils/user.js
+++ b/tests/test/utils/user.js
@@ -21,6 +21,8 @@ module.exports = async function (privateKey) {
   const bncClient = await createBncClient(privateKey)
 
   return {
+    ethAddress,
+    bncAddress,
     getEthBalance: async function () {
       const balance = await token.balanceOf(ethAddress)
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))

From 5359ac8b3c071444ee8b81ae4eee6540a669168f Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 29 Oct 2019 23:46:18 +0300
Subject: [PATCH 035/129] Added delay before fetching data from bnc api, for
 consistency

---
 tests/test/bncToEth.js | 2 +-
 tests/test/ethToBnc.js | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 5d9d1fc..4afb347 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -22,7 +22,7 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
           if (newEthBalance === ethBalances[i] + 3 + i) {
             break
           }
-          delay(500)
+          await delay(500)
         } while (true)
       }
     })
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index f442263..5e81d5d 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -1,6 +1,6 @@
 const assert = require('assert')
 const { getSequence } = require('./utils/bncController')
-const { waitPromise } = require('./utils/wait')
+const { waitPromise, delay } = require('./utils/wait')
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
@@ -36,6 +36,7 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
     })
 
     it('should make correct exchange transaction', async function () {
+      await delay(10000)
       const newBncBalances = await Promise.all(users.map(user => user.getBncBalance()))
       for (let i = 0; i < 3; i++) {
         assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)

From e44b3915d197ee2a937f4fbbfcbb1f01a91a8c0d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 11:51:22 +0300
Subject: [PATCH 036/129] Fixed extra votes processing. Added delay before
 getting binance balance.

---
 src/oracle/proxy/index.js  | 14 ++++++++------
 src/oracle/proxy/sendTx.js |  2 +-
 tests/test/index.js        |  4 +++-
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 8fb3454..f1613e3 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -222,7 +222,8 @@ function parseError (message) {
 
 async function sendVote (query, req, res, waitFlag = false) {
   try {
-    let { txHash, gasLimit } = await homeSendQuery(query)
+    const sentQuery = await homeSendQuery(query)
+    let { txHash, gasLimit } = sentQuery
     if (txHash) {
       while (waitFlag) {
         const { status, gasUsed } = await waitForReceipt(HOME_RPC_URL, txHash)
@@ -232,14 +233,16 @@ async function sendVote (query, req, res, waitFlag = false) {
         }
         if (gasLimit === gasUsed) {
           logger.info('Sending vote failed due to out of gas revert, retrying with more gas')
-          const nexTx = await homeSendQuery(query)
-          txHash = nexTx.txHash
-          gasLimit = nexTx.gasLimit
+          const nextTx = await homeSendQuery(query)
+          txHash = nextTx.txHash
+          gasLimit = nextTx.gasLimit
         } else {
           logger.warn(`Vote tx was reverted, txHash ${txHash}`)
           break
         }
       }
+    }
+    if (sentQuery) {
       res.send('Voted\n')
       logger.info('Voted successfully')
     } else {
@@ -300,8 +303,7 @@ function decodeStatus (status) {
   }
 }
 
-
-function boundX(x) {
+function boundX (x) {
   try {
     return x.toNumber()
   } catch (e) {
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index aa6b1d5..4d526eb 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -50,7 +50,7 @@ async function createSender (url, privateKey) {
 
       if (estimate.error) {
         logger.debug('Gas estimate failed %o', estimate.error)
-        return false
+        return true
       }
       const gasLimit = BN.min(new BN(estimate.result, 16).multipliedBy(GAS_LIMIT_FACTOR), MAX_GAS_LIMIT)
       tx.gasLimit = `0x${new BN(gasLimit).toString(16)}`
diff --git a/tests/test/index.js b/tests/test/index.js
index 0b3628b..17782e8 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -47,7 +47,8 @@ describe('bridge tests', function () {
   testBncToEth(() => users, () => info.foreignBridgeAddress)
 
   describe('remove validator', function () {
-    before(function () {
+    before(async function () {
+      info = await controller1.getInfo()
       prevForeignBridgeBalance = info.foreignBalanceTokens
       prevForeignBridgeAddress = info.foreignBridgeAddress
     })
@@ -126,6 +127,7 @@ describe('bridge tests', function () {
       assert.deepStrictEqual(info.validators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of validators in epoch 2')
       assert.strictEqual(info.nextEpoch, 2, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
+      await delay(5000)
       const prevBalance = await getBalance(prevForeignBridgeAddress)
       const newBalance = await getBalance(info.foreignBridgeAddress)
       assert.strictEqual(prevBalance, 0, "Did not transfer all funds")

From ef1878a31a45e9fc6925f7e5769891940ddf319c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 16:53:43 +0300
Subject: [PATCH 037/129] Tests for removing/adding validators, changing
 threshold

---
 tests/test/addValidator.js          | 100 +++++++++++++++++++++++
 tests/test/bncToEth.js              |  10 ++-
 tests/test/changeThreshold.js       | 108 +++++++++++++++++++++++++
 tests/test/ethToBnc.js              |  12 +--
 tests/test/index.js                 | 119 +++++-----------------------
 tests/test/removeValidator.js       | 100 +++++++++++++++++++++++
 tests/test/utils/bncController.js   |   2 +-
 tests/test/utils/proxyController.js |  10 ++-
 8 files changed, 349 insertions(+), 112 deletions(-)
 create mode 100644 tests/test/addValidator.js
 create mode 100644 tests/test/changeThreshold.js
 create mode 100644 tests/test/removeValidator.js

diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
new file mode 100644
index 0000000..8bfa320
--- /dev/null
+++ b/tests/test/addValidator.js
@@ -0,0 +1,100 @@
+const assert = require('assert')
+
+const { waitPromise, delay } = require('./utils/wait')
+const { getBalance } = require('./utils/bncController')
+
+const { controller1, controller3 } = require('./utils/proxyController')
+
+module.exports = newValidator => {
+  describe('add validator', function () {
+    let info
+    let initialInfo
+    let nextValidators
+
+    before(async function () {
+      initialInfo = info = await controller1.getInfo()
+      nextValidators = [ ...initialInfo.validators, newValidator ]
+    })
+
+    it('should start voting process', async function () {
+      await controller1.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
+
+      await controller3.voteStartVoting()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+
+      await controller3.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after duplicate vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should add validator', async function () {
+      await controller1.voteAddValidator(newValidator)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+
+      await controller3.voteAddValidator(newValidator)
+      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
+
+      await controller3.voteAddValidator(newValidator)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after duplicate vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should start keygen process', async function () {
+      await controller1.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+
+      await controller3.voteStartKeygen()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+
+      await controller3.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after duplicate vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should finish keygen process and start funds transfer', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+    })
+
+    it('should transfer all funds to new account and start new epoch', async function () {
+      this.timeout(300000)
+      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      assert.deepStrictEqual(info.validators, nextValidators, 'Incorrect set of validators in new epoch')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
+      await delay(5000)
+      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBalance(info.foreignBridgeAddress)
+      assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
+      assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
+    })
+  })
+}
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 4afb347..1587a87 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -1,17 +1,19 @@
 const { delay } = require('./utils/wait')
 
-module.exports = (usersFunc, foreignBridgeAddressFunc) => {
+const { controller1 } = require('./utils/proxyController')
+
+module.exports = usersFunc => {
   describe('exchange of tokens in bnc => eth direction', function () {
     let users
-    let foreignBridgeAddress
+    let info
     let ethBalances
 
     before(async function () {
       users = usersFunc()
-      foreignBridgeAddress = foreignBridgeAddressFunc()
+      info = await controller1.getInfo()
       ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
 
-      await Promise.all(users.map((user, i) => user.exchangeBnc(foreignBridgeAddress, 3 + i)))
+      await Promise.all(users.map((user, i) => user.exchangeBnc(info.foreignBridgeAddress, 3 + i)))
     })
 
     it('should make coorect exchange transactions on eth side', async function () {
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
new file mode 100644
index 0000000..0d3baaf
--- /dev/null
+++ b/tests/test/changeThreshold.js
@@ -0,0 +1,108 @@
+const assert = require('assert')
+
+const { waitPromise, delay } = require('./utils/wait')
+const { getBalance } = require('./utils/bncController')
+
+const { controller1, controller2, controller3 } = require('./utils/proxyController')
+
+module.exports = newThreshold => {
+  describe('change threshold', function () {
+    let info
+    let initialInfo
+
+    before(async function () {
+      initialInfo = info = await controller1.getInfo()
+    })
+
+    it('should start voting process', async function () {
+      await controller1.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
+
+      await controller2.voteStartVoting()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+
+      await controller3.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should change threshold', async function () {
+      await controller1.voteChangeThreshold(newThreshold)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.deepStrictEqual(info.nextThreshold, initialInfo.threshold, 'Next threshold is not set correctly')
+
+      await controller2.voteChangeThreshold(newThreshold)
+      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+
+      await controller3.voteChangeThreshold(newThreshold)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
+      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+    })
+
+    it('should start keygen process', async function () {
+      await controller1.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+
+      await controller2.voteStartKeygen()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+
+      await controller3.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
+      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+    })
+
+    it('should finish keygen process and start funds transfer', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+    })
+
+    it('should transfer all funds to new account and start new epoch', async function () {
+      this.timeout(300000)
+      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Incorrect set of validators in new epoch')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
+      assert.deepStrictEqual(info.threshold, newThreshold, 'Threshold not set correctly')
+      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+      await delay(5000)
+      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBalance(info.foreignBridgeAddress)
+      assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
+      assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
+    })
+  })
+}
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 5e81d5d..461b92f 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -4,21 +4,23 @@ const { waitPromise, delay } = require('./utils/wait')
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
-module.exports = (usersFunc, foreignBridgeAddressFunc) => {
+const { controller1 } = require('./utils/proxyController')
+
+module.exports = usersFunc => {
   describe('exchange of tokens in eth => bnc direction', function () {
+    let info
     let users
-    let foreignBridgeAddress
     let ethBalances
     let bncBalances
     let bncBridgeSequence
 
     before(async function () {
       users = usersFunc()
-      foreignBridgeAddress = foreignBridgeAddressFunc()
+      info = await controller1.getInfo()
       ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
       bncBalances = await users.seqMap(user => user.getBncBalance())
 
-      bncBridgeSequence = await getSequence(foreignBridgeAddress)
+      bncBridgeSequence = await getSequence(info.foreignBridgeAddress)
       await Promise.all(users.map((user, i) => user.approveEth(HOME_BRIDGE_ADDRESS, 5 + i)))
     })
 
@@ -32,7 +34,7 @@ module.exports = (usersFunc, foreignBridgeAddressFunc) => {
 
     it('should make exchange transaction on bnc side', async function () {
       this.timeout(300000)
-      await waitPromise(() => getSequence(foreignBridgeAddress), sequence => sequence === bncBridgeSequence + 1)
+      await waitPromise(() => getSequence(info.foreignBridgeAddress), sequence => sequence === bncBridgeSequence + 1)
     })
 
     it('should make correct exchange transaction', async function () {
diff --git a/tests/test/index.js b/tests/test/index.js
index 17782e8..60a105c 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -1,34 +1,30 @@
-const assert = require('assert')
-
-const createController = require('./utils/proxyController')
 const createUser = require('./utils/user')
-const { waitPromise, delay } = require('./utils/wait')
-const { getBalance } = require('./utils/bncController')
+const { waitPromise } = require('./utils/wait')
 
 const testEthToBnc = require('./ethToBnc')
 const testBncToEth = require('./bncToEth')
+const testRemoveValidator = require('./removeValidator')
+const testAddValidator = require('./addValidator')
+const testChangeThreshold = require('./changeThreshold')
 
 const usersConfig = require('../config').users
 const validatorsConfig = require('../config').validators
 
 const { FOREIGN_PRIVATE_KEY } = process.env
 
-const controller1 = createController(1)
-const controller2 = createController(2)
-const controller3 = createController(3)
+const { controller1 } = require('./utils/proxyController')
 
 describe('bridge tests', function () {
   let users
-  let foreignPrefundedUser
-  let info
-  let prevForeignBridgeBalance
-  let prevForeignBridgeAddress
 
   before(async function () {
     users = await usersConfig.seqMap(user => createUser(user.privateKey))
   })
 
   describe('generation of initial epoch keys', function () {
+    let info
+    let foreignPrefundedUser
+
     before(async function () {
       foreignPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
     })
@@ -43,98 +39,21 @@ describe('bridge tests', function () {
     })
   })
 
-  testEthToBnc(() => users, () => info.foreignBridgeAddress)
-  testBncToEth(() => users, () => info.foreignBridgeAddress)
+  testEthToBnc(() => users)
+  testBncToEth(() => users)
 
-  describe('remove validator', function () {
-    before(async function () {
-      info = await controller1.getInfo()
-      prevForeignBridgeBalance = info.foreignBalanceTokens
-      prevForeignBridgeAddress = info.foreignBridgeAddress
-    })
+  testRemoveValidator(validatorsConfig[1])
 
-    it('should start voting process', async function () {
-      await controller1.voteStartVoting()
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
+  testEthToBnc(() => users)
+  testBncToEth(() => users)
 
-      await controller2.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
-      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
-      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Next validators are not set correctly')
+  testAddValidator(validatorsConfig[1])
 
-      await controller3.voteStartVoting()
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
-      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Incorrect set of next validators after third vote')
-    })
+  testEthToBnc(() => users)
+  testBncToEth(() => users)
 
-    it('should remove validator', async function () {
-      await controller1.voteRemoveValidator(validatorsConfig[1])
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
-      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
-      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Next validators are not set correctly')
+  testChangeThreshold(2)
 
-      await controller2.voteRemoveValidator(validatorsConfig[1])
-      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === 2)
-      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
-      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Next validators are not set correctly')
-
-      await controller3.voteRemoveValidator(validatorsConfig[1])
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
-      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
-      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of next validators after third vote')
-    })
-
-    it('should start keygen process', async function () {
-      await controller1.voteStartKeygen()
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
-
-      await controller2.voteStartKeygen()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
-
-      await controller3.voteStartKeygen()
-      await delay(5000)
-      info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, 1, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, 2, 'Next epoch is not set correctly')
-      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
-      assert.deepStrictEqual(info.nextValidators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of next validators after third vote')
-    })
-
-    it('should finish keygen process and start funds transfer', async function () {
-      this.timeout(120000)
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
-    })
-
-    it('should transfer all funds to new account and start new epoch', async function () {
-      this.timeout(300000)
-      info = await waitPromise(controller1.getInfo, info => info.epoch === 2)
-      assert.deepStrictEqual(info.validators, [ validatorsConfig[0], validatorsConfig[2] ], 'Incorrect set of validators in epoch 2')
-      assert.strictEqual(info.nextEpoch, 2, 'Incorrect next epoch')
-      assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
-      await delay(5000)
-      const prevBalance = await getBalance(prevForeignBridgeAddress)
-      const newBalance = await getBalance(info.foreignBridgeAddress)
-      assert.strictEqual(prevBalance, 0, "Did not transfer all funds")
-      assert.strictEqual(newBalance, prevForeignBridgeBalance, "Funds are lost somewhere")
-    })
-  })
-
-  testEthToBnc(() => users, () => info.foreignBridgeAddress)
-  testBncToEth(() => users, () => info.foreignBridgeAddress)
+  testEthToBnc(() => users)
+  testBncToEth(() => users)
 })
diff --git a/tests/test/removeValidator.js b/tests/test/removeValidator.js
new file mode 100644
index 0000000..c5377bb
--- /dev/null
+++ b/tests/test/removeValidator.js
@@ -0,0 +1,100 @@
+const assert = require('assert')
+
+const { waitPromise, delay } = require('./utils/wait')
+const { getBalance } = require('./utils/bncController')
+
+const { controller1, controller2, controller3 } = require('./utils/proxyController')
+
+module.exports = oldValidator => {
+  describe('remove validator', function () {
+    let info
+    let initialInfo
+    let nextValidators
+
+    before(async function () {
+      initialInfo = info = await controller1.getInfo()
+      nextValidators = initialInfo.validators.filter(validator => validator !== oldValidator)
+    })
+
+    it('should start voting process', async function () {
+      await controller1.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
+
+      await controller2.voteStartVoting()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+
+      await controller3.voteStartVoting()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should remove validator', async function () {
+      await controller1.voteRemoveValidator(oldValidator)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
+
+      await controller2.voteRemoveValidator(oldValidator)
+      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
+
+      await controller3.voteRemoveValidator(oldValidator)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should start keygen process', async function () {
+      await controller1.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+
+      await controller2.voteStartKeygen()
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+
+      await controller3.voteStartKeygen()
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
+      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
+    })
+
+    it('should finish keygen process and start funds transfer', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+    })
+
+    it('should transfer all funds to new account and start new epoch', async function () {
+      this.timeout(300000)
+      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      assert.deepStrictEqual(info.validators, nextValidators, 'Incorrect set of validators in new epoch')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
+      assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
+      await delay(5000)
+      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBalance(info.foreignBridgeAddress)
+      assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
+      assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
+    })
+  })
+}
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index 589b4a4..99845cd 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -4,7 +4,7 @@ const { FOREIGN_URL, FOREIGN_ASSET } = process.env
 
 const bnc = axios.create({
   baseURL: FOREIGN_URL,
-  timeout: 5000
+  timeout: 15000
 })
 
 module.exports = {
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
index 1000a5a..b9492c4 100644
--- a/tests/test/utils/proxyController.js
+++ b/tests/test/utils/proxyController.js
@@ -1,11 +1,11 @@
 const axios = require('axios')
 
-module.exports = function (validatorId) {
+function createController (validatorId) {
   const url = `http://validator${validatorId}_proxy_1:8002/`
 
   const proxy = axios.create({
     baseURL: url,
-    timeout: 5000
+    timeout: 10000
   })
 
   return {
@@ -29,3 +29,9 @@ module.exports = function (validatorId) {
     }
   }
 }
+
+module.exports = {
+  controller1: createController(1),
+  controller2: createController(2),
+  controller3: createController(3)
+}

From e8e42429fb0bc9950f1c1cccb64c3e839b5239db Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 16:54:09 +0300
Subject: [PATCH 038/129] Removed useless debug output

---
 src/oracle/ethWatcher/ethWatcher.js | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index aec54e3..ca9fea6 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -12,14 +12,6 @@ const abiBridge = require('./contracts_data/Bridge.json').abi
 
 const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
 
-logger.debug(`${HOME_RPC_URL} ${HOME_BRIDGE_ADDRESS}`)
-axios.post(HOME_RPC_URL, {
-  jsonrpc: '2.0',
-  method: 'eth_getCode',
-  params: [ HOME_BRIDGE_ADDRESS, 'latest' ],
-  id: 1
-}).then(x => console.log(x.data), console.log)
-
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
 const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
@@ -104,7 +96,6 @@ async function initialize () {
   }
   logger.debug('Checking if current validator')
   isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
-  logger.debug(`${isCurrentValidator}`)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {

From cd4928b506474cd80c1cf2ee31499636c6592f2d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 16:54:44 +0300
Subject: [PATCH 039/129] Fixed incorrect vote counting for startVoting
 function

---
 src/deploy/deploy-home/contracts/Bridge.sol | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index da3fe37..a964c28 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -243,7 +243,7 @@ contract Bridge {
     }
 
     function startVoting() public readyOrVoting currentValidator {
-        if (tryVote(Vote.START_VOTING)) {
+        if (tryVote(Vote.START_VOTING, epoch)) {
             nextEpoch++;
             status = Status.VOTING;
             states[nextEpoch].threshold = getThreshold();

From 796a0db2d2f057f3f47377db3197398a892e0a1e Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 16:59:54 +0300
Subject: [PATCH 040/129] Increased timeout for bnc => eth transfers

---
 tests/test/bncToEth.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 1587a87..7da42d3 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -17,6 +17,7 @@ module.exports = usersFunc => {
     })
 
     it('should make coorect exchange transactions on eth side', async function () {
+      this.timeout(180000)
       for (let i = 0; i < 3; i++) {
         do {
           const user = users[i]

From 5557fda6a3b3dd216ed8bac24ce9b89b738bc8dc Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 20:40:33 +0300
Subject: [PATCH 041/129] Change dev log level to trace, fixed unnecessary
 update of nonce on failed gas estimate

---
 demo/validator1/.env.development |  2 +-
 demo/validator2/.env.development |  2 +-
 demo/validator3/.env.development |  2 +-
 src/oracle/proxy/index.js        | 16 ++++++++++++----
 src/oracle/proxy/sendTx.js       |  2 +-
 5 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index a79e662..6b8e3c8 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -16,4 +16,4 @@ VOTES_PROXY_PORT=5001
 
 SIGN_RESTART_PORT=6001
 
-LOG_LEVEL=debug
+LOG_LEVEL=trace
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 3e88317..c15297e 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -16,4 +16,4 @@ VOTES_PROXY_PORT=5002
 
 SIGN_RESTART_PORT=6002
 
-LOG_LEVEL=debug
+LOG_LEVEL=trace
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 3454cd6..be25774 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -16,4 +16,4 @@ VOTES_PROXY_PORT=5003
 
 SIGN_RESTART_PORT=6003
 
-LOG_LEVEL=debug
+LOG_LEVEL=trace
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index f1613e3..99122a7 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -190,11 +190,15 @@ function sideSendQuery (query) {
   return lock.acquire('home', async () => {
     logger.debug('Sending side query')
     const encodedABI = query.encodeABI()
-    return await sideSender({
+    const senderResponse = await sideSender({
       data: encodedABI,
       to: SIDE_SHARED_DB_ADDRESS,
-      nonce: sideValidatorNonce++
+      nonce: sideValidatorNonce
     })
+    if (senderResponse !== true) {
+      sideValidatorNonce++
+    }
+    return senderResponse
   })
 }
 
@@ -202,11 +206,15 @@ function homeSendQuery (query) {
   return lock.acquire('home', async () => {
     logger.debug('Sending home query')
     const encodedABI = query.encodeABI()
-    return await homeSender({
+    const senderResponse = await homeSender({
       data: encodedABI,
       to: HOME_BRIDGE_ADDRESS,
-      nonce: homeValidatorNonce++
+      nonce: homeValidatorNonce
     })
+    if (senderResponse !== true) {
+      homeValidatorNonce++
+    }
+    return senderResponse
   })
 }
 
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index 4d526eb..bba562a 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -49,7 +49,7 @@ async function createSender (url, privateKey) {
       } ])
 
       if (estimate.error) {
-        logger.debug('Gas estimate failed %o', estimate.error)
+        logger.debug('Gas estimate failed %o, skipping tx, reverting nonce', estimate.error)
         return true
       }
       const gasLimit = BN.min(new BN(estimate.result, 16).multipliedBy(GAS_LIMIT_FACTOR), MAX_GAS_LIMIT)

From 34ebbdc66e20b1c95e4923ed00fc16d8a0f21473 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 30 Oct 2019 21:23:04 +0300
Subject: [PATCH 042/129] Fixed threshold test typo

---
 tests/test/changeThreshold.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index 0d3baaf..eb65ec7 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -46,11 +46,10 @@ module.exports = newThreshold => {
       assert.deepStrictEqual(info.nextThreshold, initialInfo.threshold, 'Next threshold is not set correctly')
 
       await controller2.voteChangeThreshold(newThreshold)
-      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      info = await waitPromise(controller1.getInfo, info => info.nextThreshold === newThreshold)
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
       assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
-      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
 
       await controller3.voteChangeThreshold(newThreshold)
       await delay(5000)

From 1d0186f333b536943a4f8c88aa9489dc9d41e793 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 31 Oct 2019 12:50:03 +0300
Subject: [PATCH 043/129] Trace logging of found bnc transactions

---
 src/oracle/bncWatcher/bncWatcher.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 29fb3cc..1509acb 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -27,10 +27,12 @@ async function main () {
     return
   }
 
-  if (newTransactions.length)
+  if (newTransactions.length) {
     logger.info(`Found ${newTransactions.length} new transactions`)
-  else
+    logger.trace('%o', newTransactions)
+  } else {
     logger.debug(`Found 0 new transactions`)
+  }
 
   for (const tx of newTransactions.reverse()) {
     if (tx.memo !== 'funding') {
@@ -46,7 +48,7 @@ async function main () {
   }
 }
 
-function getTx(hash) {
+function getTx (hash) {
   return foreignHttpClient
     .get(`/api/v1/tx/${hash}`, {
       params: {

From e11a74c4900cc8514bd1adcf94e4f7d48ef90738 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 31 Oct 2019 17:57:16 +0300
Subject: [PATCH 044/129] Removed scenarios

---
 demo/scenarios/macos/main.jxa | 417 ----------------------------------
 demo/scenarios/macos/run.sh   |   5 -
 2 files changed, 422 deletions(-)
 delete mode 100644 demo/scenarios/macos/main.jxa
 delete mode 100755 demo/scenarios/macos/run.sh

diff --git a/demo/scenarios/macos/main.jxa b/demo/scenarios/macos/main.jxa
deleted file mode 100644
index 9b0e127..0000000
--- a/demo/scenarios/macos/main.jxa
+++ /dev/null
@@ -1,417 +0,0 @@
-ObjC.import('stdlib')
-
-const terminal = Application('Terminal')
-const system = Application('System Events')
-const curApp = Application.currentApplication()
-curApp.includeStandardAdditions = true
-
-const validator1 = '0x99Eb3D86663c6Db090eFFdBC20510Ca9f836DCE3'
-const validator2 = '0xAa006899B0EC407De930bA8A166DEfe59bBfd3DC'
-const validator3 = '0x6352e3e6038e05b9da00C84AE851308f9774F883'
-
-const userAccounts = [
-  {
-    privateKey: '7ed93ad7753e00b52265a73dfbbcd2296256772965323fcb9a6320b5cd084b89',
-    ethAddress: '0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa',
-    bncAddress: 'tbnb14r3z8xk7qsar3vwj05w8cd8gqwk7g6gfurlt5l'
-  },
-  {
-    privateKey: '2ad6e3a232ad3ea058b61352302118a99085600ff8b6eec4ccf0066a33756231',
-    ethAddress: '0xf7ca4aed1795e424433498cef43f6a3825c88731',
-    bncAddress: 'tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym'
-  },
-  {
-    privateKey: 'eb6dd328677b3fa2822fb8e834507e569bda52e8ffa49266df0f2de239c4ec98',
-    ethAddress: '0xad6c8127143032d843a260c5d379d8d9b3d51f15',
-    bncAddress: 'tbnb12epcy4p7ktas0nlyrfuektcyh0e83dwzuq73f4'
-  }
-]
-
-let bridgeBncAddress
-
-const windows = terminal.windows()
-
-const wins = []
-
-function saveBlockchainData () {
-  console.log('Saving blockchain data')
-  curApp.doShellScript('zip -r ./demo/ganache_home_backup.zip ./demo/ganache_home_db')
-  curApp.doShellScript('zip -r ./demo/ganache_side_backup.zip ./demo/ganache_side_db')
-}
-
-function reloadBlockchainData () {
-  console.log('Reloading blockchain data')
-  curApp.doShellScript('unzip -d . ./demo/ganache_home_backup.zip')
-  curApp.doShellScript('unzip -d . ./demo/ganache_side_backup.zip')
-}
-
-function closeOldWindows () {
-  for (let i in windows) {
-    try {
-      windows[i].selectedTab()
-
-      if (windows[i].selectedTab().customTitle().startsWith('Validator') || windows[i].selectedTab().customTitle() === 'Services') {
-        windows[i].close()
-      }
-    } catch (e) {
-    }
-  }
-}
-
-function killValidators () {
-  terminal.activate()
-  for (let i = 0; i < 3; i++) {
-    wins[i].frontmost = true
-    delay(0.5)
-    system.keystroke('c', { using: 'control down' })
-  }
-}
-
-function openNewWindows () {
-  for (let i = 0; i < 3; i++) {
-    // open new terminal
-    const tab = terminal.doScript()
-    // get opened window
-    const winId = terminal.windows[0].id()
-    wins[i] = terminal.windows.byId(winId)
-    tab.customTitle = `Validator ${i + 1}`
-  }
-  wins[0].bounds = { x: 0, y: 23, width: 558, height: 1027 }
-  wins[1].bounds = { x: 559, y: 374, width: 560, height: 676 }
-  wins[2].bounds = { x: 1120, y: 374, width: 560, height: 676 }
-  // open new terminal
-  const tab = terminal.doScript()
-  // get opened window
-  const winId = terminal.windows[0].id()
-  wins[3] = terminal.windows.byId(winId)
-  tab.customTitle = `Services`
-  wins[3].bounds = { x: 559, y: 23, width: 1120, height: 350 }
-
-  terminal.activate()
-  delay(0.5)
-}
-
-function apiRequestBackground (url) {
-  const response = curApp.doShellScript(`curl -s -X GET "${url}"`)
-  try {
-    return JSON.parse(response)
-  } catch (e) {
-    return response
-  }
-}
-
-function exec (n, script) {
-  terminal.doScript(script, { in: wins[n - 1] })
-}
-
-function wait (n) {
-  while (wins[n - 1].selectedTab().busy()) {
-    delay(0.2)
-  }
-}
-
-function execSync (n, script) {
-  exec(n, script)
-  wait(n)
-}
-
-function waitAll () {
-  wait(1)
-  wait(2)
-  wait(3)
-  wait(4)
-}
-
-function waitLog (n, log) {
-  do {
-    const s = wins[n - 1].selectedTab().contents().split('\n').find(x => x.includes(log))
-    if (s) {
-      return s
-    }
-    delay(0.2)
-  } while (true)
-}
-
-function waitApi (n, url, check) {
-  do {
-    const res = apiRequestBackground(`http://localhost:500${n}${url}`)
-    const checkerRes = check ? check(res) : true
-    if (checkerRes)
-      return checkerRes
-    delay(3)
-  } while (true)
-}
-
-function prefundEthAddresses () {
-  for (let { ethAddress } of userAccounts) {
-    execSync(4, `./src/test-services/ethereumSend/run.sh ${ethAddress} 100`)
-  }
-}
-
-function prefundBncAddresses () {
-  for (let { bncAddress } of userAccounts) {
-    execSync(4, `./src/test-services/binanceSend/run.sh ${bncAddress} 100 0.1`)
-  }
-}
-
-function initBalances () {
-  userAccounts.forEach(account => {
-    account.ethBalance = getEthTokenBalance(account.ethAddress)
-    account.bncBalance = getBncTokenBalance(account.bncAddress)
-  })
-}
-
-function getBncTokenBalance (address) {
-  const res = curApp.doShellScript(`./src/test-services/binanceBalance/run.sh ${address}`)
-  return parseFloat(/KFT-94F: [0-9.]+/.exec(res)[0].split(' ')[1])
-}
-
-function waitBncTokenBalance (address, balance) {
-  while (true) {
-    const newBalance = getBncTokenBalance(address)
-    if (Math.abs(newBalance - balance) < 0.0001)
-      return newBalance
-    delay(3)
-  }
-}
-
-function getEthTokenBalance (address) {
-  const res = curApp.doShellScript(`./src/test-services/ethereumBalance/run.sh ${address}`)
-  return parseFloat(/[0-9.]+ tokens/.exec(res)[0].split(' ')[0])
-}
-
-function waitEthTokenBalance (address, balance) {
-  while (true) {
-    const newBalance = getEthTokenBalance(address)
-    if (Math.abs(newBalance - balance) < 0.0001)
-      return newBalance
-    delay(3)
-  }
-}
-
-function apiRequest (n, url, suffix) {
-  execSync(4, `curl -s -X GET http://localhost:500${n}${url} ${suffix ? suffix : ''}`)
-}
-
-function printState (msg) {
-  execSync(4, `echo "${msg}"`)
-  apiRequest(1, '/info', '| jq .')
-}
-
-function initCwd () {
-  const cwd = $.getenv('PWD')
-
-  for (let i = 1; i <= 4; i++) {
-    exec(i, `cd "${cwd}"`)
-  }
-  waitAll()
-}
-
-function killDockerContainers () {
-  execSync(4, `docker kill $(docker ps | grep validator | awk '{print $1}') > /dev/null 2>&1 || true`)
-  execSync(4, `docker kill ganache_side ganache_home > /dev/null 2>&1 || true`)
-}
-
-function clean () {
-  killDockerContainers()
-  execSync(4, `./demo/clean.sh`)
-
-  exec(1, `clear`)
-  exec(2, `clear`)
-  exec(3, `clear`)
-  waitAll()
-}
-
-function testEthToBnc () {
-  console.log('Testing eth => bnc')
-  // try token transfer in eth => bnc direction
-  let prevBridgeHomeBalance
-  let prevBridgeForeignBalance
-  waitApi(1, '/info', res => {
-    prevBridgeHomeBalance = res.homeBalance
-    prevBridgeForeignBalance = res.foreignBalanceTokens
-    return true
-  })
-
-  userAccounts.forEach((account, i) => {
-    execSync(4, `PRIVATE_KEY=${account.privateKey} ./src/test-services/ethereumSend/run.sh bridge ${5 + i}`)
-    account.ethBalance -= 5 + i
-  })
-
-  const delta = (9 + userAccounts.length) * userAccounts.length / 2
-  waitApi(1, '/info', res => res.homeBalance === prevBridgeHomeBalance + delta && res.foreignBalanceTokens === prevBridgeForeignBalance - delta)
-
-  userAccounts.forEach((account, i) => {
-    account.bncBalance = waitBncTokenBalance(account.bncAddress, account.bncBalance + 5 + i)
-  })
-
-  printState(`Token transfer in eth => bnc direction succeed`)
-  console.log('Testing eth => bnc is OK')
-}
-
-function testBncToEth () {
-  console.log('Testing bnc => eth')
-  // try token transfer in bnc => eth direction
-  let prevBridgeHomeBalance
-  let prevBridgeForeignBalance
-  waitApi(1, '/info', res => {
-    prevBridgeHomeBalance = res.homeBalance
-    prevBridgeForeignBalance = res.foreignBalanceTokens
-    return true
-  })
-
-  userAccounts.forEach((account , i) => {
-    execSync(4, `PRIVATE_KEY=${account.privateKey} ./src/test-services/binanceSend/run.sh ${bridgeBncAddress} ${3 + i}`)
-    account.bncBalance -= 3 + i
-  })
-
-  const delta = (5 + userAccounts.length) * userAccounts.length / 2
-
-  waitApi(1, '/info', res => res.homeBalance === prevBridgeHomeBalance - delta && res.foreignBalanceTokens === prevBridgeForeignBalance + delta)
-
-  userAccounts.forEach((account, i) => {
-    account.ethBalance = waitEthTokenBalance(account.ethAddress, account.ethBalance + 3 + i)
-  })
-
-  printState(`Token transfer in bnc => eth direction succeed`)
-  console.log('Testing bnc => eth is OK')
-}
-
-function testRemoveValidator () {
-  console.log('Testing removing validator')
-  apiRequest(1, '/vote/startVoting')
-  apiRequest(2, '/vote/startVoting')
-  waitApi(1, '/info', res => res.bridgeStatus === 'voting')
-  apiRequest(1, `/vote/removeValidator/${validator2}`)
-  apiRequest(3, `/vote/removeValidator/${validator2}`)
-  waitApi(1, '/info', res => res.nextValidators.length === 2)
-  apiRequest(1, '/vote/startKeygen')
-  apiRequest(3, '/vote/startKeygen')
-  waitApi(1, '/info', res => {
-    if (res.bridgeStatus === 'ready' && res.epoch === 2 && res.validators.length === 2) {
-      bridgeBncAddress = res.foreignBridgeAddress
-      return true
-    }
-    return false
-  })
-  printState(`Removing validator succeed`)
-  console.log('Testing removing validator is OK')
-}
-
-function testAddValidator () {
-  console.log('Testing adding validator')
-  apiRequest(1, '/vote/startVoting')
-  apiRequest(3, '/vote/startVoting')
-  waitApi(1, '/info', res => res.bridgeStatus === 'voting')
-  apiRequest(1, `/vote/addValidator/${validator2}`)
-  apiRequest(3, `/vote/addValidator/${validator2}`)
-  waitApi(1, '/info', res => res.nextValidators.length === 3)
-  apiRequest(1, '/vote/startKeygen')
-  apiRequest(3, '/vote/startKeygen')
-  waitApi(1, '/info', res => {
-    if (res.bridgeStatus === 'ready' && res.epoch === 3 && res.validators.length === 3) {
-      bridgeBncAddress = res.foreignBridgeAddress
-      return true
-    }
-    return false
-  })
-  printState(`Adding validator succeed`)
-  console.log('Testing adding validator is OK')
-}
-
-function testChangeThreshold () {
-  console.log('Testing changing threshold')
-  apiRequest(1, '/vote/startVoting')
-  apiRequest(3, '/vote/startVoting')
-  waitApi(1, '/info', res => res.bridgeStatus === 'voting')
-  apiRequest(2, `/vote/changeThreshold/2`)
-  apiRequest(3, `/vote/changeThreshold/2`)
-  waitApi(1, '/info', res => res.nextThreshold === 2)
-  apiRequest(1, '/vote/startKeygen')
-  apiRequest(2, '/vote/startKeygen')
-  waitApi(1, '/info', res => {
-    if (res.bridgeStatus === 'ready' && res.epoch === 4 && res.threshold === 2) {
-      bridgeBncAddress = res.foreignBridgeAddress
-      return true
-    }
-    return false
-  })
-  printState(`Changing threshold succeed`)
-  console.log('Testing changing threshold is OK')
-}
-
-function run () {
-  closeOldWindows()
-
-  openNewWindows()
-
-  initCwd()
-
-  clean()
-
-  if ($.getenv('RELOAD') !== 'true') {
-    execSync(4, `./demo/start-environment.sh`)
-
-    prefundEthAddresses()
-
-    saveBlockchainData()
-  } else {
-    reloadBlockchainData()
-
-    execSync(4, `./demo/start-environment.sh`)
-  }
-
-  prefundBncAddresses()
-
-  initBalances()
-
-  exec(1, `N=1 ./demo/validator-demo.sh`)
-  exec(2, `N=2 ./demo/validator-demo.sh`)
-  exec(3, `N=3 ./demo/validator-demo.sh`)
-
-  // wait until binance account willl be generated
-  waitLog(1, 'Generated multisig account in binance chain')
-  waitApi(1, '/info', res => {
-    if (res.epoch === 1) {
-      bridgeBncAddress = res.foreignBridgeAddress
-      return true
-    }
-    return false
-  })
-
-  // prefund binance account
-  execSync(4, `./src/test-services/binanceSend/run.sh ${bridgeBncAddress} 100 0.1`)
-
-  // wait until binance prefund transaction will be processed
-  waitApi(1, '/info', res => res.foreignBalanceTokens === 100)
-
-  printState(`Binance bridge account at ${bridgeBncAddress} for epoch 1 is generated and prefunded`)
-
-  testEthToBnc()
-
-  testBncToEth()
-
-  testRemoveValidator()
-
-  testEthToBnc()
-
-  testBncToEth()
-
-  testAddValidator()
-
-  testEthToBnc()
-
-  testBncToEth()
-
-  testChangeThreshold()
-
-  testEthToBnc()
-
-  testBncToEth()
-
-  console.log('PASSED ALL TESTS')
-
-  killValidators()
-
-  killDockerContainers()
-}
diff --git a/demo/scenarios/macos/run.sh b/demo/scenarios/macos/run.sh
deleted file mode 100755
index 2351b7a..0000000
--- a/demo/scenarios/macos/run.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-RELOAD=${RELOAD:=false}
-
-RELOAD="$RELOAD" osascript -l JavaScript ./demo/scenarios/macos/main.jxa

From 311db30af9b1d133959cf4df04da0f32921c93f3 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 31 Oct 2019 17:57:53 +0300
Subject: [PATCH 045/129] Fixed encode/decode bug in round 3 of keygen

---
 src/oracle/proxy/decode.js | 5 +++--
 src/oracle/proxy/encode.js | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/oracle/proxy/decode.js b/src/oracle/proxy/decode.js
index 86faecf..b736749 100644
--- a/src/oracle/proxy/decode.js
+++ b/src/oracle/proxy/decode.js
@@ -52,10 +52,11 @@ const keygenDecoders = [
       ciphertext: [],
       tag: []
     }
-    for (let i = 0; i < 32; i++) {
+    const ciphertextLength = tokenizer.byte() // probably 32
+    for (let i = 0; i < ciphertextLength; i++) {
       res.ciphertext.push(tokenizer.byte())
     }
-    for (let i = 0; i < 16; i++) {
+    while (!tokenizer.isEmpty()) {
       res.tag.push(tokenizer.byte())
     }
     return res
diff --git a/src/oracle/proxy/encode.js b/src/oracle/proxy/encode.js
index 6499a2d..1178306 100644
--- a/src/oracle/proxy/encode.js
+++ b/src/oracle/proxy/encode.js
@@ -24,8 +24,9 @@ const keygenEncoders = [
   },
   // round 3
   function * (value) {
-    yield Buffer.from(value.ciphertext) // 32 bytes
-    yield Buffer.from(value.tag) // 16 bytes
+    yield Buffer.from([ value.ciphertext.length ])
+    yield Buffer.from(value.ciphertext) // 32 bytes or less
+    yield Buffer.from(value.tag) // 16 bytes or less
   },
   // round 4
   function * (value) {

From 3621b4f70ee4a825d1272a7f28afe2fcb8d5cac4 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 31 Oct 2019 18:46:14 +0300
Subject: [PATCH 046/129] Fetching last block time in bncWatcher. Prefunding
 eth bridge in tests

---
 src/oracle/bncWatcher/bncWatcher.js | 58 ++++++++++++++++-------------
 tests/.env                          |  1 +
 tests/test/bncToEth.js              |  1 -
 tests/test/index.js                 |  5 ++-
 4 files changed, 38 insertions(+), 27 deletions(-)

diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 1509acb..58c853d 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -20,21 +20,17 @@ async function initialize () {
 }
 
 async function main () {
-  const newTransactions = await fetchNewTransactions()
-  if (newTransactions === null || newTransactions.length === 0) {
-
+  const { transactions, endTime } = await fetchNewTransactions()
+  if (!transactions || transactions.length === 0) {
+    logger.debug(`Found 0 new transactions`)
     await new Promise(r => setTimeout(r, 5000))
     return
   }
 
-  if (newTransactions.length) {
-    logger.info(`Found ${newTransactions.length} new transactions`)
-    logger.trace('%o', newTransactions)
-  } else {
-    logger.debug(`Found 0 new transactions`)
-  }
+  logger.info(`Found ${transactions.length} new transactions`)
+  logger.trace('%o', transactions)
 
-  for (const tx of newTransactions.reverse()) {
+  for (const tx of transactions.reverse()) {
     if (tx.memo !== 'funding') {
       const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
       await proxyHttpClient
@@ -44,8 +40,9 @@ async function main () {
           hash: `0x${tx.txHash}`
         })
     }
-    await redis.set('foreignTime', Date.parse(tx.timeStamp))
+    //await redis.set('foreignTime', Date.parse(tx.timeStamp))
   }
+  await redis.set('foreignTime', endTime)
 }
 
 function getTx (hash) {
@@ -59,26 +56,37 @@ function getTx (hash) {
     .catch(() => getTx(hash))
 }
 
+function getBlockTime () {
+  return foreignHttpClient
+    .get(`/api/v1/time`)
+    .then(res => Date.parse(res.data.block_time) - 10 * 1000)
+    .catch(() => getBlockTime())
+}
+
 async function fetchNewTransactions () {
   logger.debug('Fetching new transactions')
   const startTime = parseInt(await redis.get('foreignTime')) + 1
   const address = getLastForeignAddress()
+  const endTime = await getBlockTime()
   if (address === null)
-    return null
+    return {}
   logger.debug('Sending api transactions request')
-  return foreignHttpClient
-    .get('/api/v1/transactions', {
-      params: {
-        address,
-        side: 'RECEIVE',
-        txAsset: FOREIGN_ASSET,
-        txType: 'TRANSFER',
-        startTime,
-        endTime: startTime + 3 * 30 * 24 * 60 * 60 * 1000,
-      }
-    })
-    .then(res => res.data.tx)
-    .catch(() => fetchNewTransactions())
+  const params = {
+    address,
+    side: 'RECEIVE',
+    txAsset: FOREIGN_ASSET,
+    txType: 'TRANSFER',
+    startTime,
+    endTime,
+  }
+  try {
+    logger.trace('%o', params)
+    const transactions = (await foreignHttpClient
+      .get('/api/v1/transactions', { params })).data.tx
+    return { transactions, endTime }
+  } catch (e) {
+    return await fetchNewTransactions()
+  }
 }
 
 function getLastForeignAddress () {
diff --git a/tests/.env b/tests/.env
index 004c1d0..d6c7a4b 100644
--- a/tests/.env
+++ b/tests/.env
@@ -1,6 +1,7 @@
 HOME_RPC_URL=http://ganache_home:8545
 HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
+HOME_PRIVATE_KEY=e2aeb24eaa63102d0c0821717c3b6384abdabd7af2ad4ec8e650dce300798b27
 
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 7da42d3..1587a87 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -17,7 +17,6 @@ module.exports = usersFunc => {
     })
 
     it('should make coorect exchange transactions on eth side', async function () {
-      this.timeout(180000)
       for (let i = 0; i < 3; i++) {
         do {
           const user = users[i]
diff --git a/tests/test/index.js b/tests/test/index.js
index 60a105c..d304050 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -10,7 +10,7 @@ const testChangeThreshold = require('./changeThreshold')
 const usersConfig = require('../config').users
 const validatorsConfig = require('../config').validators
 
-const { FOREIGN_PRIVATE_KEY } = process.env
+const { HOME_PRIVATE_KEY, FOREIGN_PRIVATE_KEY, HOME_BRIDGE_ADDRESS } = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
@@ -23,9 +23,11 @@ describe('bridge tests', function () {
 
   describe('generation of initial epoch keys', function () {
     let info
+    let homePrefundedUser
     let foreignPrefundedUser
 
     before(async function () {
+      homePrefundedUser = await createUser(HOME_PRIVATE_KEY)
       foreignPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
     })
 
@@ -36,6 +38,7 @@ describe('bridge tests', function () {
 
     after(async function () {
       await foreignPrefundedUser.transferBnc(info.foreignBridgeAddress, 50, 0.1)
+      await homePrefundedUser.transferEth(HOME_BRIDGE_ADDRESS, 500)
     })
   })
 

From bd6de658e14d613cf26c8ad42225c6b780a322e6 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 31 Oct 2019 22:43:34 +0300
Subject: [PATCH 047/129] Little refactor of bnc watcher

---
 demo/validator1/.env.development        |  3 +++
 demo/validator1/.env.staging            |  3 +++
 demo/validator2/.env.development        |  3 +++
 demo/validator2/.env.staging            |  3 +++
 demo/validator3/.env.development        |  3 +++
 demo/validator3/.env.staging            |  3 +++
 src/deploy/deploy-home/.env.development |  2 +-
 src/oracle/bncWatcher/bncWatcher.js     | 13 ++++++++-----
 src/oracle/docker-compose-test.yml      |  3 +++
 src/oracle/docker-compose.yml           |  3 +++
 10 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 6b8e3c8..bba8faf 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 VALIDATOR_PRIVATE_KEY=2be3f252e16541bf1bb2d4a517d2bf173e6d09f2d765d32c64dc50515aec63ea
 
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 5e5e086..20692c4 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index c15297e..d1cfebd 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 VALIDATOR_PRIVATE_KEY=e59d58c77b791f98f10187117374ae9c589d48a62720ec6a5e142b0cc134f685
 
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index eb851f3..edce271 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index be25774..64f6f65 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 VALIDATOR_PRIVATE_KEY=afaa4d4d6e54d25b0bf0361e3fd6cef562f6311bf6200de2dd0aa4cab63ae3b5
 
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index 73f9f99..da39c37 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -9,6 +9,9 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
+FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_INTERVAL=5000
+FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
diff --git a/src/deploy/deploy-home/.env.development b/src/deploy/deploy-home/.env.development
index 000ccbe..26e2481 100644
--- a/src/deploy/deploy-home/.env.development
+++ b/src/deploy/deploy-home/.env.development
@@ -14,4 +14,4 @@ THRESHOLD=1
 MIN_TX_LIMIT=10000000000000000
 MAX_TX_LIMIT=100000000000000000000
 
-BLOCKS_RANGE_SIZE=25
+BLOCKS_RANGE_SIZE=10
diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 58c853d..b6ac7a8 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -9,13 +9,17 @@ const { publicKeyToAddress } = require('./crypto')
 
 const { FOREIGN_URL, PROXY_URL, FOREIGN_ASSET } = process.env
 
+const FOREIGN_START_TIME = parseInt(process.env.FOREIGN_START_TIME)
+const FOREIGN_FETCH_INTERVAL = parseInt(process.env.FOREIGN_FETCH_INTERVAL)
+const FOREIGN_FETCH_BLOCK_TIME_OFFSET = parseInt(process.env.FOREIGN_FETCH_BLOCK_TIME_OFFSET)
+
 const foreignHttpClient = axios.create({ baseURL: FOREIGN_URL })
 const proxyHttpClient = axios.create({ baseURL: PROXY_URL })
 
 async function initialize () {
   if (await redis.get('foreignTime') === null) {
     logger.info('Set default foreign time')
-    await redis.set('foreignTime', Date.now() - 2 * 30 * 24 * 60 * 60 * 1000)
+    await redis.set('foreignTime', FOREIGN_START_TIME)
   }
 }
 
@@ -23,7 +27,7 @@ async function main () {
   const { transactions, endTime } = await fetchNewTransactions()
   if (!transactions || transactions.length === 0) {
     logger.debug(`Found 0 new transactions`)
-    await new Promise(r => setTimeout(r, 5000))
+    await new Promise(r => setTimeout(r, FOREIGN_FETCH_INTERVAL))
     return
   }
 
@@ -40,7 +44,6 @@ async function main () {
           hash: `0x${tx.txHash}`
         })
     }
-    //await redis.set('foreignTime', Date.parse(tx.timeStamp))
   }
   await redis.set('foreignTime', endTime)
 }
@@ -59,7 +62,7 @@ function getTx (hash) {
 function getBlockTime () {
   return foreignHttpClient
     .get(`/api/v1/time`)
-    .then(res => Date.parse(res.data.block_time) - 10 * 1000)
+    .then(res => Date.parse(res.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET)
     .catch(() => getBlockTime())
 }
 
@@ -67,7 +70,7 @@ async function fetchNewTransactions () {
   logger.debug('Fetching new transactions')
   const startTime = parseInt(await redis.get('foreignTime')) + 1
   const address = getLastForeignAddress()
-  const endTime = await getBlockTime()
+  const endTime = Math.min(startTime + 3 * 30 * 24 * 60 * 60 * 1000, await getBlockTime())
   if (address === null)
     return {}
   logger.debug('Sending api transactions request')
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 91845c1..696d830 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -102,6 +102,9 @@ services:
       - FOREIGN_ASSET
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://proxy:8001'
+      - FOREIGN_START_TIME
+      - FOREIGN_FETCH_INTERVAL
+      - FOREIGN_FETCH_BLOCK_TIME_OFFSET
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 499e9f7..0572ed2 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -111,6 +111,9 @@ services:
       - FOREIGN_ASSET
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://proxy:8001'
+      - FOREIGN_START_TIME
+      - FOREIGN_FETCH_INTERVAL
+      - FOREIGN_FETCH_BLOCK_TIME_OFFSET
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'

From 11b13d5bfe272f83080705dd9e18d30c531afffd Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 11:17:33 +0300
Subject: [PATCH 048/129] Added tests readme

---
 tests/README.md | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 tests/README.md

diff --git a/tests/README.md b/tests/README.md
new file mode 100644
index 0000000..85ab76a
--- /dev/null
+++ b/tests/README.md
@@ -0,0 +1,37 @@
+# Ethereum to Binance Chain / E2E tests
+
+## Prerequisites
+
+To run the tests you need to have
+[Docker](https://www.docker.com/community-edition) and
+[Docker Compose](https://docs.docker.com/compose/install/) installed.
+
+## Correlation with CircleCI tests
+
+CircleCI uses this tests for testing the code base.
+
+## Running
+
+To run the bridge tests, you first need to clean old test environment, and then initialize a new one:
+```bash
+./demo/clean.sh
+./tests/init.sh
+```
+This will create a clean development environment, using `./demo/start-environment.sh`.
+This will also prefund user accounts from `./tests/config.json` for both networks. 
+Prefunding process uses `./src/test-services` scripts. 
+Finally, this command will start 3 validators in  daemon mode (using `./demo/validator-demo.sh`), 
+and wait until they are ready.
+
+Next, you can run the tests:
+```bash
+FOREIGN_PRIVATE_KEY=0000000000000000000000000000000000000000000000000000000000000000 ./tests/run.sh
+```
+`FOREIGN_PRIVATE_KEY` is the key, that will be used for initial prefunding first 
+generated binance side of the bridge. 
+
+After tests are done, all active docker containers can be killed.
+```bash
+docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}')
+docker kill ganache_side ganache_home
+``` 

From 219cc5185aa2166a133416699ada047504b8707a Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 11:20:26 +0300
Subject: [PATCH 049/129] Added docker ignore files

---
 src/oracle/scripts/resetToBlock/.dockerignore   | 3 +++
 src/test-services/binanceBalance/.dockerignore  | 4 ++++
 src/test-services/binanceSend/.dockerignore     | 4 ++++
 src/test-services/ethereumBalance/.dockerignore | 4 ++++
 src/test-services/ethereumSend/.dockerignore    | 4 ++++
 src/test-services/getAddresses/.dockerignore    | 3 +++
 src/test-services/sidePrefund/.dockerignore     | 4 ++++
 tests/.dockerignore                             | 5 +++++
 8 files changed, 31 insertions(+)
 create mode 100644 src/oracle/scripts/resetToBlock/.dockerignore
 create mode 100644 src/test-services/binanceBalance/.dockerignore
 create mode 100644 src/test-services/binanceSend/.dockerignore
 create mode 100644 src/test-services/ethereumBalance/.dockerignore
 create mode 100644 src/test-services/ethereumSend/.dockerignore
 create mode 100644 src/test-services/getAddresses/.dockerignore
 create mode 100644 src/test-services/sidePrefund/.dockerignore
 create mode 100644 tests/.dockerignore

diff --git a/src/oracle/scripts/resetToBlock/.dockerignore b/src/oracle/scripts/resetToBlock/.dockerignore
new file mode 100644
index 0000000..4635bd2
--- /dev/null
+++ b/src/oracle/scripts/resetToBlock/.dockerignore
@@ -0,0 +1,3 @@
+.dockerignore
+Dockerfile
+run.sh
diff --git a/src/test-services/binanceBalance/.dockerignore b/src/test-services/binanceBalance/.dockerignore
new file mode 100644
index 0000000..4119e2e
--- /dev/null
+++ b/src/test-services/binanceBalance/.dockerignore
@@ -0,0 +1,4 @@
+.dockerignore
+Dockerfile
+run.sh
+.env.*
diff --git a/src/test-services/binanceSend/.dockerignore b/src/test-services/binanceSend/.dockerignore
new file mode 100644
index 0000000..4119e2e
--- /dev/null
+++ b/src/test-services/binanceSend/.dockerignore
@@ -0,0 +1,4 @@
+.dockerignore
+Dockerfile
+run.sh
+.env.*
diff --git a/src/test-services/ethereumBalance/.dockerignore b/src/test-services/ethereumBalance/.dockerignore
new file mode 100644
index 0000000..4119e2e
--- /dev/null
+++ b/src/test-services/ethereumBalance/.dockerignore
@@ -0,0 +1,4 @@
+.dockerignore
+Dockerfile
+run.sh
+.env.*
diff --git a/src/test-services/ethereumSend/.dockerignore b/src/test-services/ethereumSend/.dockerignore
new file mode 100644
index 0000000..4119e2e
--- /dev/null
+++ b/src/test-services/ethereumSend/.dockerignore
@@ -0,0 +1,4 @@
+.dockerignore
+Dockerfile
+run.sh
+.env.*
diff --git a/src/test-services/getAddresses/.dockerignore b/src/test-services/getAddresses/.dockerignore
new file mode 100644
index 0000000..4635bd2
--- /dev/null
+++ b/src/test-services/getAddresses/.dockerignore
@@ -0,0 +1,3 @@
+.dockerignore
+Dockerfile
+run.sh
diff --git a/src/test-services/sidePrefund/.dockerignore b/src/test-services/sidePrefund/.dockerignore
new file mode 100644
index 0000000..4119e2e
--- /dev/null
+++ b/src/test-services/sidePrefund/.dockerignore
@@ -0,0 +1,4 @@
+.dockerignore
+Dockerfile
+run.sh
+.env.*
diff --git a/tests/.dockerignore b/tests/.dockerignore
new file mode 100644
index 0000000..51e9d4a
--- /dev/null
+++ b/tests/.dockerignore
@@ -0,0 +1,5 @@
+.dockerignore
+Dockerfile
+init.sh
+run.sh
+results.xml

From e27f5c8df27bb73334932508a593b95e3500e5b0 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 11:21:28 +0300
Subject: [PATCH 050/129] Added retry promise in bncController

---
 tests/init.sh                     |  2 ++
 tests/test/utils/bncController.js | 23 ++++++++---------------
 tests/test/utils/wait.js          | 15 ++++++++++++++-
 3 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/tests/init.sh b/tests/init.sh
index e9831b3..08a506c 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -3,6 +3,8 @@
 set -e
 set -v
 
+docker build -t tss ./src/tss
+
 ./demo/start-environment.sh
 
 cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index 99845cd..82fe567 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -1,5 +1,7 @@
 const axios = require('axios')
 
+const { retry } = require('./wait')
+
 const { FOREIGN_URL, FOREIGN_ASSET } = process.env
 
 const bnc = axios.create({
@@ -9,21 +11,12 @@ const bnc = axios.create({
 
 module.exports = {
   getBalance: async function (address) {
-    try {
-      const response = await bnc.get(`/api/v1/account/${address}`)
-
-      return parseFloat(response.data.balances.find(x => x.symbol === FOREIGN_ASSET).free)
-    } catch (e) {
-      return 0
-    }
+    const response = await retry(5, () => bnc.get(`/api/v1/account/${address}`))
+    const tokens = response.data.balances.find(x => x.symbol === FOREIGN_ASSET)
+    return response && tokens ? parseFloat(tokens.free) : 0
   },
-  getSequence: async function(address) {
-    try {
-      const response = await bnc.get(`/api/v1/account/${address}/sequence`)
-
-      return response.data.sequence
-    } catch (e) {
-      return 0
-    }
+  getSequence: async function (address) {
+    const response = await retry(5, () => bnc.get(`/api/v1/account/${address}/sequence`))
+    return response ? response.data.sequence : 0
   }
 }
diff --git a/tests/test/utils/wait.js b/tests/test/utils/wait.js
index 733d9f4..ae0a145 100644
--- a/tests/test/utils/wait.js
+++ b/tests/test/utils/wait.js
@@ -11,6 +11,18 @@ async function waitPromise (getPromise, checker) {
   } while (true)
 }
 
+async function retry (n, getPromise) {
+  while (n) {
+    try {
+      return await getPromise()
+    } catch (e) {
+      await delay(3000)
+      n--
+    }
+  }
+  return null
+}
+
 Array.prototype.seqMap = async function (transition) {
   const results = []
   for (let i = 0; i < this.length; i++) {
@@ -21,5 +33,6 @@ Array.prototype.seqMap = async function (transition) {
 
 module.exports = {
   waitPromise,
-  delay
+  delay,
+  retry
 }

From 427694283c06309f97654040bc6d7245b0f215a3 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 11:22:04 +0300
Subject: [PATCH 051/129] Updated gitignore

---
 .gitignore | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/.gitignore b/.gitignore
index 5d2cec0..6806d9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,21 +1,14 @@
 .idea/
 node_modules/
 .DS_Store
-**/keys*.store
-**/signature
-**/params
 data/
 demo/validator*/development
 demo/validator*/staging
 demo/validator*/.keys.staging
-demo/ganache_home_db/
-demo/ganache_side_db/
-demo/*.zip
-src/deploy/deploy-home/build/
-src/deploy/deploy-side/build/
-src/deploy/deploy-test/build/
+src/deploy/deploy*/build/
 src/deploy/.keys.staging
 src/test-services/.keys.staging
 src/test-services/.keys.development
-test.js
+src/test.js
 tests/results.xml
+package-lock.json

From 34d6927c0b19e9743efde731decafb7991cc21cc Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 21:42:44 +0300
Subject: [PATCH 052/129] Added eslint configs

---
 .eslintignore                |  8 ++++++++
 .eslintrc                    | 18 ++++++++++++++++++
 package.json                 | 14 ++++++++++++++
 src/deploy/.eslintrc         | 11 +++++++++++
 src/oracle/scripts/.eslintrc |  8 ++++++++
 src/test-services/.eslintrc  |  8 ++++++++
 tests/.eslintrc              | 12 ++++++++++++
 7 files changed, 79 insertions(+)
 create mode 100644 .eslintignore
 create mode 100644 .eslintrc
 create mode 100644 package.json
 create mode 100644 src/deploy/.eslintrc
 create mode 100644 src/oracle/scripts/.eslintrc
 create mode 100644 src/test-services/.eslintrc
 create mode 100644 tests/.eslintrc

diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..4fd97cc
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1,8 @@
+node_modules/
+data/
+demo/validator*/development
+demo/validator*/staging
+src/deploy/deploy/*/build
+src/deploy/deploy-home/contracts/openzeppelin-solidity
+src/deploy/deploy-test/contracts/openzeppelin-solidity
+src/tss/multi-party-ecdsa
diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..c0a5fcf
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,18 @@
+{
+  "extends": [
+    "plugin:node/recommended",
+    "airbnb-base"
+  ],
+  "plugins": [
+    "node"
+  ],
+  "rules": {
+    "semi": [1, "never"],
+    "comma-dangle": [1, "never"],
+    "node/no-missing-require": 0,
+    "import/no-unresolved": 0,
+    "no-return-await": 0,
+    "no-await-in-loop": 0,
+    "no-constant-condition": 0
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..e954bd9
--- /dev/null
+++ b/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "bridge",
+  "version": "0.0.1",
+  "devDependencies": {
+    "eslint": "^6.6.0",
+    "eslint-config-airbnb": "^18.0.1",
+    "eslint-plugin-import": "^2.18.2",
+    "eslint-plugin-node": "^10.0.0",
+    "eslint-plugin-truffle": "0.3.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
+  }
+}
diff --git a/src/deploy/.eslintrc b/src/deploy/.eslintrc
new file mode 100644
index 0000000..8f4829c
--- /dev/null
+++ b/src/deploy/.eslintrc
@@ -0,0 +1,11 @@
+{
+  "extends": [
+    "../../.eslintrc"
+  ],
+  "plugins": [
+    "truffle"
+  ],
+  "env": {
+    "truffle/globals": true
+  }
+}
diff --git a/src/oracle/scripts/.eslintrc b/src/oracle/scripts/.eslintrc
new file mode 100644
index 0000000..252c81a
--- /dev/null
+++ b/src/oracle/scripts/.eslintrc
@@ -0,0 +1,8 @@
+{
+  "extends": [
+    "../../../.eslintrc"
+  ],
+  "rules": {
+    "no-console": 0
+  }
+}
diff --git a/src/test-services/.eslintrc b/src/test-services/.eslintrc
new file mode 100644
index 0000000..3703c0a
--- /dev/null
+++ b/src/test-services/.eslintrc
@@ -0,0 +1,8 @@
+{
+  "extends": [
+    "../../.eslintrc"
+  ],
+  "rules": {
+    "no-console": 0
+  }
+}
diff --git a/tests/.eslintrc b/tests/.eslintrc
new file mode 100644
index 0000000..8fb9bf8
--- /dev/null
+++ b/tests/.eslintrc
@@ -0,0 +1,12 @@
+{
+  "extends": [
+    "../.eslintrc"
+  ],
+  "env": {
+    "mocha": true
+  },
+  "rules": {
+    "prefer-arrow-callback": 0,
+    "func-names": 0
+  }
+}

From 62c1dd80644a4dbbb1ae9ea73cbde3ea8ca7bc0b Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 1 Nov 2019 21:43:25 +0300
Subject: [PATCH 053/129] Fixed eslint error/warnings

---
 .../deploy-home/migrations/1_deployment.js    |   8 +-
 .../deploy-side/migrations/1_deployment.js    |   2 +-
 src/oracle/bncWatcher/bncWatcher.js           | 115 +++---
 src/oracle/bncWatcher/package.json            |   3 +
 src/oracle/docker-compose-test.yml            |   3 -
 src/oracle/docker-compose.yml                 |   3 -
 src/oracle/ethWatcher/ethWatcher.js           | 273 +++++++-------
 src/oracle/ethWatcher/package.json            |   3 +
 src/oracle/proxy/decode.js                    | 215 +++++------
 src/oracle/proxy/encode.js                    |  65 ++--
 src/oracle/proxy/index.js                     | 341 +++++++++++-------
 src/oracle/proxy/package.json                 |   3 +
 src/oracle/proxy/sendTx.js                    |  51 +--
 src/oracle/scripts/resetToBlock/package.json  |   3 +
 .../scripts/resetToBlock/resetToBlock.js      |   2 +-
 src/oracle/shared/amqp.js                     |  46 +--
 src/oracle/shared/crypto.js                   |  40 +-
 src/oracle/shared/db.js                       |   3 +-
 src/oracle/tss-keygen/keygen.js               |  41 ++-
 src/oracle/tss-keygen/package.json            |   3 +
 src/oracle/tss-sign/package.json              |   3 +
 src/oracle/tss-sign/signer.js                 | 306 ++++++++--------
 src/oracle/tss-sign/tx.js                     |  58 ++-
 .../binanceBalance/testGetBinanceBalance.js   |  18 +-
 .../binanceSend/testBinanceSend.js            |   7 +-
 .../ethereumBalance/testGetEthereumBalance.js |  19 +-
 .../ethereumSend/testEthereumSend.js          |  32 +-
 .../getAddresses/testGetAddresses.js          |  26 +-
 .../sidePrefund/testEthereumSend.js           |  11 +-
 tests/package.json                            |   3 +
 tests/test/addValidator.js                    |  23 +-
 tests/test/bncToEth.js                        |  12 +-
 tests/test/changeThreshold.js                 |  21 +-
 tests/test/ethToBnc.js                        |  21 +-
 tests/test/index.js                           |   6 +-
 tests/test/removeValidator.js                 |  23 +-
 tests/test/utils/bncClient.js                 |   6 +-
 tests/test/utils/bncController.js             |   6 +-
 tests/test/utils/proxyController.js           |  14 +-
 tests/test/utils/user.js                      |  24 +-
 tests/test/utils/wait.js                      |  25 +-
 41 files changed, 1047 insertions(+), 840 deletions(-)

diff --git a/src/deploy/deploy-home/migrations/1_deployment.js b/src/deploy/deploy-home/migrations/1_deployment.js
index 5bd4359..fe88868 100644
--- a/src/deploy/deploy-home/migrations/1_deployment.js
+++ b/src/deploy/deploy-home/migrations/1_deployment.js
@@ -1,20 +1,20 @@
 const Bridge = artifacts.require('Bridge')
 
 const addresses = Object.entries(process.env)
-  .filter(([ key ]) => key.startsWith('VALIDATOR_ADDRESS'))
-  .map(([ , value ]) => value)
+  .filter(([key]) => key.startsWith('VALIDATOR_ADDRESS'))
+  .map(([, value]) => value)
 
 const {
   THRESHOLD, HOME_TOKEN_ADDRESS, MIN_TX_LIMIT, MAX_TX_LIMIT, BLOCKS_RANGE_SIZE
 } = process.env
 
-module.exports = deployer => {
+module.exports = (deployer) => {
   deployer.deploy(
     Bridge,
     THRESHOLD,
     addresses,
     HOME_TOKEN_ADDRESS,
-    [ MIN_TX_LIMIT, MAX_TX_LIMIT ],
+    [MIN_TX_LIMIT, MAX_TX_LIMIT],
     BLOCKS_RANGE_SIZE
   )
 }
diff --git a/src/deploy/deploy-side/migrations/1_deployment.js b/src/deploy/deploy-side/migrations/1_deployment.js
index bad14cd..7b2ff31 100644
--- a/src/deploy/deploy-side/migrations/1_deployment.js
+++ b/src/deploy/deploy-side/migrations/1_deployment.js
@@ -1,5 +1,5 @@
 const SharedDB = artifacts.require('SharedDB')
 
-module.exports = deployer => {
+module.exports = (deployer) => {
   deployer.deploy(SharedDB)
 }
diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index b6ac7a8..91df7a1 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -9,70 +9,50 @@ const { publicKeyToAddress } = require('./crypto')
 
 const { FOREIGN_URL, PROXY_URL, FOREIGN_ASSET } = process.env
 
-const FOREIGN_START_TIME = parseInt(process.env.FOREIGN_START_TIME)
-const FOREIGN_FETCH_INTERVAL = parseInt(process.env.FOREIGN_FETCH_INTERVAL)
-const FOREIGN_FETCH_BLOCK_TIME_OFFSET = parseInt(process.env.FOREIGN_FETCH_BLOCK_TIME_OFFSET)
+const FOREIGN_START_TIME = parseInt(process.env.FOREIGN_START_TIME, 10)
+const FOREIGN_FETCH_INTERVAL = parseInt(process.env.FOREIGN_FETCH_INTERVAL, 10)
+const FOREIGN_FETCH_BLOCK_TIME_OFFSET = parseInt(process.env.FOREIGN_FETCH_BLOCK_TIME_OFFSET, 10)
 
 const foreignHttpClient = axios.create({ baseURL: FOREIGN_URL })
 const proxyHttpClient = axios.create({ baseURL: PROXY_URL })
 
-async function initialize () {
-  if (await redis.get('foreignTime') === null) {
-    logger.info('Set default foreign time')
-    await redis.set('foreignTime', FOREIGN_START_TIME)
+function getLastForeignAddress() {
+  const epoch = Math.max(0, ...fs.readdirSync('/keys')
+    .map((x) => parseInt(x.split('.')[0].substr(4), 10)))
+  if (epoch === 0) {
+    return null
   }
+  const keysFile = `/keys/keys${epoch}.store`
+  const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
+  return publicKeyToAddress(publicKey)
 }
 
-async function main () {
-  const { transactions, endTime } = await fetchNewTransactions()
-  if (!transactions || transactions.length === 0) {
-    logger.debug(`Found 0 new transactions`)
-    await new Promise(r => setTimeout(r, FOREIGN_FETCH_INTERVAL))
-    return
-  }
-
-  logger.info(`Found ${transactions.length} new transactions`)
-  logger.trace('%o', transactions)
-
-  for (const tx of transactions.reverse()) {
-    if (tx.memo !== 'funding') {
-      const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
-      await proxyHttpClient
-        .post('/transfer', {
-          to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
-          value: new BN(tx.value).multipliedBy(10 ** 18).integerValue(),
-          hash: `0x${tx.txHash}`
-        })
-    }
-  }
-  await redis.set('foreignTime', endTime)
-}
-
-function getTx (hash) {
+function getTx(hash) {
   return foreignHttpClient
     .get(`/api/v1/tx/${hash}`, {
       params: {
         format: 'json'
       }
     })
-    .then(res => res.data.tx.value)
+    .then((res) => res.data.tx.value)
     .catch(() => getTx(hash))
 }
 
-function getBlockTime () {
+function getBlockTime() {
   return foreignHttpClient
-    .get(`/api/v1/time`)
-    .then(res => Date.parse(res.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET)
+    .get('/api/v1/time')
+    .then((res) => Date.parse(res.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET)
     .catch(() => getBlockTime())
 }
 
-async function fetchNewTransactions () {
+async function fetchNewTransactions() {
   logger.debug('Fetching new transactions')
-  const startTime = parseInt(await redis.get('foreignTime')) + 1
+  const startTime = parseInt(await redis.get('foreignTime'), 10) + 1
   const address = getLastForeignAddress()
   const endTime = Math.min(startTime + 3 * 30 * 24 * 60 * 60 * 1000, await getBlockTime())
-  if (address === null)
+  if (address === null) {
     return {}
+  }
   logger.debug('Sending api transactions request')
   const params = {
     address,
@@ -80,29 +60,58 @@ async function fetchNewTransactions () {
     txAsset: FOREIGN_ASSET,
     txType: 'TRANSFER',
     startTime,
-    endTime,
+    endTime
   }
   try {
     logger.trace('%o', params)
     const transactions = (await foreignHttpClient
       .get('/api/v1/transactions', { params })).data.tx
-    return { transactions, endTime }
+    return {
+      transactions,
+      endTime
+    }
   } catch (e) {
     return await fetchNewTransactions()
   }
 }
 
-function getLastForeignAddress () {
-  const epoch = Math.max(0, ...fs.readdirSync('/keys').map(x => parseInt(x.split('.')[0].substr(4))))
-  if (epoch === 0)
-    return null
-  const keysFile = `/keys/keys${epoch}.store`
-  const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
-  return publicKeyToAddress(publicKey)
+async function initialize() {
+  if (await redis.get('foreignTime') === null) {
+    logger.info('Set default foreign time')
+    await redis.set('foreignTime', FOREIGN_START_TIME)
+  }
 }
 
-initialize().then(async () => {
-  while (true) {
-    await main()
+async function main() {
+  const { transactions, endTime } = await fetchNewTransactions()
+  if (!transactions || transactions.length === 0) {
+    logger.debug('Found 0 new transactions')
+    await new Promise((r) => setTimeout(r, FOREIGN_FETCH_INTERVAL))
+    return
   }
-})
+
+  logger.info(`Found ${transactions.length} new transactions`)
+  logger.trace('%o', transactions)
+
+  for (let i = transactions.length - 1; i >= 0; i -= 1) {
+    const tx = transactions[i]
+    if (tx.memo !== 'funding') {
+      const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
+      await proxyHttpClient
+        .post('/transfer', {
+          to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
+          value: new BN(tx.value).multipliedBy(10 ** 18)
+            .integerValue(),
+          hash: `0x${tx.txHash}`
+        })
+    }
+  }
+  await redis.set('foreignTime', endTime)
+}
+
+initialize()
+  .then(async () => {
+    while (true) {
+      await main()
+    }
+  })
diff --git a/src/oracle/bncWatcher/package.json b/src/oracle/bncWatcher/package.json
index 445edda..721ea33 100644
--- a/src/oracle/bncWatcher/package.json
+++ b/src/oracle/bncWatcher/package.json
@@ -9,6 +9,9 @@
     "ethers": "4.0.33",
     "pino": "5.13.4",
     "pino-pretty": "3.2.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
 
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 696d830..2de2b8b 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -9,10 +9,8 @@ services:
       - HOME_RPC_URL
       - HOME_BRIDGE_ADDRESS
       - HOME_TOKEN_ADDRESS
-      - HOME_CHAIN_ID
       - SIDE_RPC_URL
       - SIDE_SHARED_DB_ADDRESS
-      - SIDE_CHAIN_ID
       - VALIDATOR_PRIVATE_KEY
       - FOREIGN_URL
       - FOREIGN_ASSET
@@ -83,7 +81,6 @@ services:
       - HOME_RPC_URL
       - HOME_BRIDGE_ADDRESS
       - HOME_TOKEN_ADDRESS
-      - HOME_CHAIN_ID
       - HOME_START_BLOCK
       - BLOCKS_RANGE_SIZE
       - VALIDATOR_PRIVATE_KEY
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 0572ed2..994bfa7 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -9,10 +9,8 @@ services:
       - HOME_RPC_URL
       - HOME_BRIDGE_ADDRESS
       - HOME_TOKEN_ADDRESS
-      - HOME_CHAIN_ID
       - SIDE_RPC_URL
       - SIDE_SHARED_DB_ADDRESS
-      - SIDE_CHAIN_ID
       - VALIDATOR_PRIVATE_KEY
       - FOREIGN_URL
       - FOREIGN_ASSET
@@ -93,7 +91,6 @@ services:
       - HOME_RPC_URL
       - HOME_BRIDGE_ADDRESS
       - HOME_TOKEN_ADDRESS
-      - HOME_CHAIN_ID
       - HOME_START_BLOCK
       - VALIDATOR_PRIVATE_KEY
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index ca9fea6..b59602e 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -1,5 +1,5 @@
 const Web3 = require('web3')
-const utils = require('ethers').utils
+const { utils } = require('ethers')
 const BN = require('bignumber.js')
 const axios = require('axios')
 
@@ -10,19 +10,21 @@ const { publicKeyToAddress } = require('./crypto')
 
 const abiBridge = require('./contracts_data/Bridge.json').abi
 
-const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY } = process.env
+const {
+  HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY
+} = process.env
 
 const homeWeb3 = new Web3(HOME_RPC_URL)
 const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
 const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
 
+const foreignNonce = []
 let channel
 let exchangeQueue
 let signQueue
 let keygenQueue
 let cancelKeygenQueue
 let blockNumber
-let foreignNonce = []
 let epoch
 let epochStart
 let redisTx
@@ -30,16 +32,17 @@ let rangeSize
 let lastTransactionBlockNumber
 let isCurrentValidator
 
-async function resetFutureMessages (queue) {
+async function resetFutureMessages(queue) {
   logger.debug(`Resetting future messages in queue ${queue.name}`)
   const { messageCount } = await channel.checkQueue(queue.name)
   if (messageCount) {
     logger.info(`Filtering ${messageCount} reloaded messages from queue ${queue.name}`)
     const backup = await assertQueue(channel, `${queue.name}.backup`)
-    do {
+    while (true) {
       const message = await queue.get()
-      if (message === false)
+      if (message === false) {
         break
+      }
       const data = JSON.parse(message.content)
       if (data.blockNumber < blockNumber) {
         logger.debug('Saving message %o', data)
@@ -48,25 +51,134 @@ async function resetFutureMessages (queue) {
         logger.debug('Dropping message %o', data)
       }
       channel.ack(message)
-    } while (true)
+    }
 
     logger.debug('Dropped messages came from future')
 
-    do {
+    while (true) {
       const message = await backup.get()
-      if (message === false)
+      if (message === false) {
         break
+      }
       const data = JSON.parse(message.content)
       logger.debug('Requeuing message %o', data)
       queue.send(data)
       channel.ack(message)
-    } while (true)
+    }
 
     logger.debug('Redirected messages back to initial queue')
   }
 }
 
-async function initialize () {
+async function sendKeygen(event) {
+  const newEpoch = event.returnValues.newEpoch.toNumber()
+  keygenQueue.send({
+    epoch: newEpoch,
+    blockNumber,
+    threshold: (await bridge.methods.getThreshold(newEpoch)
+      .call()).toNumber(),
+    parties: (await bridge.methods.getParties(newEpoch)
+      .call()).toNumber()
+  })
+  logger.debug('Sent keygen start event')
+}
+
+function sendKeygenCancellation(event) {
+  const eventEpoch = event.returnValues.epoch.toNumber()
+  cancelKeygenQueue.send({
+    epoch: eventEpoch,
+    blockNumber
+  })
+  logger.debug('Sent keygen cancellation event')
+}
+
+async function sendSignFundsTransfer(event) {
+  const newEpoch = event.returnValues.newEpoch.toNumber()
+  const oldEpoch = event.returnValues.oldEpoch.toNumber()
+  signQueue.send({
+    epoch: oldEpoch,
+    blockNumber,
+    newEpoch,
+    nonce: foreignNonce[oldEpoch],
+    threshold: (await bridge.methods.getThreshold(oldEpoch)
+      .call()).toNumber(),
+    parties: (await bridge.methods.getParties(oldEpoch)
+      .call()).toNumber()
+  })
+  logger.debug('Sent sign funds transfer event')
+  foreignNonce[oldEpoch] += 1
+  redisTx.incr(`foreignNonce${oldEpoch}`)
+}
+
+async function sendSign(event) {
+  const tx = await homeWeb3.eth.getTransaction(event.transactionHash)
+  const msg = utils.serializeTransaction({
+    nonce: tx.nonce,
+    gasPrice: `0x${new BN(tx.gasPrice).toString(16)}`,
+    gasLimit: `0x${new BN(tx.gas).toString(16)}`,
+    to: tx.to,
+    value: `0x${new BN(tx.value).toString(16)}`,
+    data: tx.input,
+    chainId: await homeWeb3.eth.net.getId()
+  })
+  const hash = homeWeb3.utils.sha3(msg)
+  const publicKey = utils.recoverPublicKey(hash, {
+    r: tx.r,
+    s: tx.s,
+    v: tx.v
+  })
+  const msgToQueue = {
+    epoch,
+    blockNumber,
+    recipient: publicKeyToAddress({
+      x: publicKey.substr(4, 64),
+      y: publicKey.substr(68, 64)
+    }),
+    value: (new BN(event.returnValues.value)).dividedBy(10 ** 18)
+      .toFixed(8, 3),
+    nonce: event.returnValues.nonce.toNumber()
+  }
+
+  exchangeQueue.send(msgToQueue)
+  logger.debug('Sent new sign event: %o', msgToQueue)
+
+  lastTransactionBlockNumber = blockNumber
+  redisTx.set('lastTransactionBlockNumber', blockNumber)
+  logger.debug(`Set lastTransactionBlockNumber to ${blockNumber}`)
+}
+
+async function sendStartSign() {
+  redisTx.incr(`foreignNonce${epoch}`)
+  signQueue.send({
+    epoch,
+    blockNumber,
+    nonce: foreignNonce[epoch],
+    threshold: (await bridge.methods.getThreshold(epoch)
+      .call()).toNumber(),
+    parties: (await bridge.methods.getParties(epoch)
+      .call()).toNumber()
+  })
+  foreignNonce[epoch] += 1
+}
+
+async function processEpochStart(event) {
+  epoch = event.returnValues.epoch.toNumber()
+  epochStart = blockNumber
+  logger.info(`Epoch ${epoch} started`)
+  rangeSize = (await bridge.methods.getRangeSize()
+    .call()).toNumber()
+  isCurrentValidator = (await bridge.methods.getValidators()
+    .call()).includes(validatorAddress)
+  if (isCurrentValidator) {
+    logger.info(`${validatorAddress} is a current validator`)
+  } else {
+    logger.info(`${validatorAddress} is not a current validator`)
+  }
+  logger.info(`Updated range size to ${rangeSize}`)
+  foreignNonce[epoch] = 0
+}
+
+async function initialize() {
   channel = await connectRabbit(RABBITMQ_URL)
   exchangeQueue = await assertQueue(channel, 'exchangeQueue')
   signQueue = await assertQueue(channel, 'signQueue')
@@ -79,11 +191,12 @@ async function initialize () {
   epoch = events.length ? events[events.length - 1].returnValues.epoch.toNumber() : 0
   logger.info(`Current epoch ${epoch}`)
   epochStart = events.length ? events[events.length - 1].blockNumber : 1
-  const saved = (parseInt(await redis.get('homeBlock')) + 1) || parseInt(HOME_START_BLOCK)
+  const saved = (parseInt(await redis.get('homeBlock'), 10) + 1) || parseInt(HOME_START_BLOCK, 10)
   if (epochStart > saved) {
     logger.info(`Data in db is outdated, starting from epoch ${epoch}, block #${epochStart}`)
     blockNumber = epochStart
-    rangeSize = (await bridge.methods.getRangeSize().call()).toNumber()
+    rangeSize = (await bridge.methods.getRangeSize()
+      .call()).toNumber()
     await redis.multi()
       .set('homeBlock', blockNumber - 1)
       .set(`foreignNonce${epoch}`, 0)
@@ -92,10 +205,11 @@ async function initialize () {
   } else {
     logger.info('Restoring epoch and block number from local db')
     blockNumber = saved
-    foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`)) || 0
+    foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`), 10) || 0
   }
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
+  isCurrentValidator = (await bridge.methods.getValidators()
+    .call()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -106,16 +220,16 @@ async function initialize () {
   await resetFutureMessages(cancelKeygenQueue)
   await resetFutureMessages(exchangeQueue)
   await resetFutureMessages(signQueue)
-  logger.debug(`Sending start commands`)
+  logger.debug('Sending start commands')
   await axios.get('http://keygen:8001/start')
   await axios.get('http://signer:8001/start')
 }
 
-async function main () {
+async function main() {
   logger.debug(`Watching events in block #${blockNumber}`)
   if (await homeWeb3.eth.getBlock(blockNumber) === null) {
     logger.debug('No block')
-    await new Promise(r => setTimeout(r, 1000))
+    await new Promise((r) => setTimeout(r, 1000))
     return
   }
 
@@ -126,7 +240,8 @@ async function main () {
     toBlock: blockNumber
   })
 
-  for (const event of bridgeEvents) {
+  for (let i = 0; i < bridgeEvents.length; i += 1) {
+    const event = bridgeEvents[i]
     switch (event.event) {
       case 'NewEpoch':
         await sendKeygen(event)
@@ -135,14 +250,20 @@ async function main () {
         sendKeygenCancellation(event)
         break
       case 'NewFundsTransfer':
-        isCurrentValidator && await sendSignFundsTransfer(event)
+        if (isCurrentValidator) {
+          await sendSignFundsTransfer(event)
+        }
         break
       case 'ExchangeRequest':
-        isCurrentValidator && await sendSign(event)
+        if (isCurrentValidator) {
+          await sendSign(event)
+        }
         break
       case 'EpochStart':
         await processEpochStart(event)
         break
+      default:
+        logger.warn('Unknown event %o', event)
     }
   }
 
@@ -155,108 +276,16 @@ async function main () {
     }
   }
 
-  blockNumber++
+  blockNumber += 1
   // Exec redis tx
-  await redisTx.incr('homeBlock').exec()
+  await redisTx.incr('homeBlock')
+    .exec()
   await redis.save()
 }
 
-initialize().then(async () => {
-  while (true) {
-    await main()
-  }
-}, e => logger.warn('Initialization failed %o', e))
-
-async function sendKeygen (event) {
-  const newEpoch = event.returnValues.newEpoch.toNumber()
-  keygenQueue.send({
-    epoch: newEpoch,
-    blockNumber,
-    threshold: (await bridge.methods.getThreshold(newEpoch).call()).toNumber(),
-    parties: (await bridge.methods.getParties(newEpoch).call()).toNumber()
-  })
-  logger.debug('Sent keygen start event')
-}
-
-function sendKeygenCancellation (event) {
-  const epoch = event.returnValues.epoch.toNumber()
-  cancelKeygenQueue.send({
-    epoch,
-    blockNumber
-  })
-  logger.debug('Sent keygen cancellation event')
-}
-
-async function sendSignFundsTransfer (event) {
-  const newEpoch = event.returnValues.newEpoch.toNumber()
-  const oldEpoch = event.returnValues.oldEpoch.toNumber()
-  signQueue.send({
-    epoch: oldEpoch,
-    blockNumber,
-    newEpoch,
-    nonce: foreignNonce[oldEpoch],
-    threshold: (await bridge.methods.getThreshold(oldEpoch).call()).toNumber(),
-    parties: (await bridge.methods.getParties(oldEpoch).call()).toNumber()
-  })
-  logger.debug('Sent sign funds transfer event')
-  foreignNonce[oldEpoch]++
-  redisTx.incr(`foreignNonce${oldEpoch}`)
-}
-
-async function sendSign (event) {
-  const tx = await homeWeb3.eth.getTransaction(event.transactionHash)
-  const msg = utils.serializeTransaction({
-    nonce: tx.nonce,
-    gasPrice: `0x${new BN(tx.gasPrice).toString(16)}`,
-    gasLimit: `0x${new BN(tx.gas).toString(16)}`,
-    to: tx.to,
-    value: `0x${new BN(tx.value).toString(16)}`,
-    data: tx.input,
-    chainId: await homeWeb3.eth.net.getId()
-  })
-  const hash = homeWeb3.utils.sha3(msg)
-  const publicKey = utils.recoverPublicKey(hash, { r: tx.r, s: tx.s, v: tx.v })
-  const msgToQueue = {
-    epoch,
-    blockNumber,
-    recipient: publicKeyToAddress({
-      x: publicKey.substr(4, 64),
-      y: publicKey.substr(68, 64)
-    }),
-    value: (new BN(event.returnValues.value)).dividedBy(10 ** 18).toFixed(8, 3),
-    nonce: event.returnValues.nonce.toNumber()
-  }
-
-  exchangeQueue.send(msgToQueue)
-  logger.debug('Sent new sign event: %o', msgToQueue)
-
-  lastTransactionBlockNumber = blockNumber
-  redisTx.set('lastTransactionBlockNumber', blockNumber)
-  logger.debug(`Set lastTransactionBlockNumber to ${blockNumber}`)
-}
-
-async function sendStartSign () {
-  redisTx.incr(`foreignNonce${epoch}`)
-  signQueue.send({
-    epoch,
-    blockNumber,
-    nonce: foreignNonce[epoch]++,
-    threshold: (await bridge.methods.getThreshold(epoch).call()).toNumber(),
-    parties: (await bridge.methods.getParties(epoch).call()).toNumber()
-  })
-}
-
-async function processEpochStart (event) {
-  epoch = event.returnValues.epoch.toNumber()
-  epochStart = blockNumber
-  logger.info(`Epoch ${epoch} started`)
-  rangeSize = (await bridge.methods.getRangeSize().call()).toNumber()
-  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
-  if (isCurrentValidator) {
-    logger.info(`${validatorAddress} is a current validator`)
-  } else {
-    logger.info(`${validatorAddress} is not a current validator`)
-  }
-  logger.info(`Updated range size to ${rangeSize}`)
-  foreignNonce[epoch] = 0
-}
+initialize()
+  .then(async () => {
+    while (true) {
+      await main()
+    }
+  }, (e) => logger.warn('Initialization failed %o', e))
diff --git a/src/oracle/ethWatcher/package.json b/src/oracle/ethWatcher/package.json
index 027e9de..26ec5a6 100644
--- a/src/oracle/ethWatcher/package.json
+++ b/src/oracle/ethWatcher/package.json
@@ -11,5 +11,8 @@
     "pino": "5.13.4",
     "pino-pretty": "3.2.1",
     "axios": "0.19.0"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/oracle/proxy/decode.js b/src/oracle/proxy/decode.js
index b736749..f1d2e2e 100644
--- a/src/oracle/proxy/decode.js
+++ b/src/oracle/proxy/decode.js
@@ -1,18 +1,19 @@
 const BN = require('bn.js')
 
-function Tokenizer (_buffer) {
+function Tokenizer(_buffer) {
   const buffer = _buffer
   let position = 0
   return {
-    isEmpty: function () {
+    isEmpty() {
       return position === buffer.length
     },
-    parse: function (length = 32, base = 16) {
+    parse(length = 32, base = 16) {
       const res = new BN(buffer.slice(position, position + length)).toString(base)
       position += length
       return res
     },
-    byte: function () {
+    byte() {
+      // eslint-disable-next-line no-plusplus
       return buffer[position++]
     }
   }
@@ -21,7 +22,7 @@ function Tokenizer (_buffer) {
 const keygenDecoders = [
   null,
   // round 1
-  function (tokenizer) {
+  (tokenizer) => {
     const res = {
       e: {
         n: tokenizer.parse(256, 10)
@@ -37,23 +38,21 @@ const keygenDecoders = [
     return res
   },
   // round 2
-  function (tokenizer) {
-    return {
-      blind_factor: tokenizer.parse(),
-      y_i: {
-        x: tokenizer.parse(),
-        y: tokenizer.parse()
-      }
+  (tokenizer) => ({
+    blind_factor: tokenizer.parse(),
+    y_i: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
     }
-  },
+  }),
   // round 3
-  function (tokenizer) {
+  (tokenizer) => {
     const res = {
       ciphertext: [],
       tag: []
     }
     const ciphertextLength = tokenizer.byte() // probably 32
-    for (let i = 0; i < ciphertextLength; i++) {
+    for (let i = 0; i < ciphertextLength; i += 1) {
       res.ciphertext.push(tokenizer.byte())
     }
     while (!tokenizer.isEmpty()) {
@@ -62,7 +61,7 @@ const keygenDecoders = [
     return res
   },
   // round 4
-  function (tokenizer) {
+  (tokenizer) => {
     const res = {
       parameters: {
         threshold: tokenizer.byte(),
@@ -73,157 +72,139 @@ const keygenDecoders = [
     while (!tokenizer.isEmpty()) {
       res.commitments.push({
         x: tokenizer.parse(),
-        y: tokenizer.parse(),
+        y: tokenizer.parse()
       })
     }
     return res
   },
   // round 5
-  function (tokenizer) {
-    return {
-      pk: {
-        x: tokenizer.parse(),
-        y: tokenizer.parse()
-      },
-      pk_t_rand_commitment: {
-        x: tokenizer.parse(),
-        y: tokenizer.parse()
-      },
-      challenge_response: tokenizer.parse()
-    }
-  }
+  (tokenizer) => ({
+    pk: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
+    },
+    pk_t_rand_commitment: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
+    },
+    challenge_response: tokenizer.parse()
+  })
 ]
 
 const signDecoders = [
   // round 0
-  function (tokenizer) {
-    return tokenizer.byte()
-  },
+  (tokenizer) => tokenizer.byte(),
   // round 1
-  function (tokenizer) {
-    return [
-      {
-        com: tokenizer.parse()
-      },
-      {
-        c: tokenizer.parse(512)
-      }
-    ]
-  },
+  (tokenizer) => [
+    {
+      com: tokenizer.parse()
+    },
+    {
+      c: tokenizer.parse(512)
+    }
+  ],
   // round 2
-  function (tokenizer) {
+  (tokenizer) => {
     const res = []
-    for (let i = 0; i < 2; i++) {
+    for (let i = 0; i < 2; i += 1) {
       res[i] = {
         c: tokenizer.parse(512),
         b_proof: {
           pk: {
             x: tokenizer.parse(),
-            y: tokenizer.parse(),
+            y: tokenizer.parse()
           },
           pk_t_rand_commitment: {
             x: tokenizer.parse(),
-            y: tokenizer.parse(),
+            y: tokenizer.parse()
           },
-          challenge_response: tokenizer.parse(),
+          challenge_response: tokenizer.parse()
         },
         beta_tag_proof: {
           pk: {
             x: tokenizer.parse(),
-            y: tokenizer.parse(),
+            y: tokenizer.parse()
           },
           pk_t_rand_commitment: {
             x: tokenizer.parse(),
-            y: tokenizer.parse(),
+            y: tokenizer.parse()
           },
-          challenge_response: tokenizer.parse(),
+          challenge_response: tokenizer.parse()
         }
       }
     }
     return res
   },
   // round 3
-  function (tokenizer) {
-    return tokenizer.parse()
-  },
+  (tokenizer) => tokenizer.parse(),
   // round 4
-  function (tokenizer) {
-    return {
-      blind_factor: tokenizer.parse(),
-      g_gamma_i: {
-        x: tokenizer.parse(),
-        y: tokenizer.parse()
-      }
+  (tokenizer) => ({
+    blind_factor: tokenizer.parse(),
+    g_gamma_i: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
     }
-  },
+  }),
   // round 5
-  function (tokenizer) {
-    return {
-      com: tokenizer.parse()
-    }
-  },
+  (tokenizer) => ({
+    com: tokenizer.parse()
+  }),
   // round 6
-  function (tokenizer) {
-    return [
-      {
-        V_i: {
-          x: tokenizer.parse(),
-          y: tokenizer.parse()
-        },
-        A_i: {
-          x: tokenizer.parse(),
-          y: tokenizer.parse()
-        },
-        B_i: {
-          x: tokenizer.parse(),
-          y: tokenizer.parse()
-        },
-        blind_factor: tokenizer.parse()
-      },
-      {
-        T: {
-          x: tokenizer.parse(),
-          y: tokenizer.parse()
-        },
-        A3: {
-          x: tokenizer.parse(),
-          y: tokenizer.parse()
-        },
-        z1: tokenizer.parse(),
-        z2: tokenizer.parse()
-      }
-    ]
-  },
-  // round 7
-  function (tokenizer) {
-    return {
-      com: tokenizer.parse()
-    }
-  },
-  // round 8
-  function (tokenizer) {
-    return {
-      u_i: {
+  (tokenizer) => [
+    {
+      V_i: {
         x: tokenizer.parse(),
         y: tokenizer.parse()
       },
-      t_i: {
+      A_i: {
+        x: tokenizer.parse(),
+        y: tokenizer.parse()
+      },
+      B_i: {
         x: tokenizer.parse(),
         y: tokenizer.parse()
       },
       blind_factor: tokenizer.parse()
+    },
+    {
+      T: {
+        x: tokenizer.parse(),
+        y: tokenizer.parse()
+      },
+      A3: {
+        x: tokenizer.parse(),
+        y: tokenizer.parse()
+      },
+      z1: tokenizer.parse(),
+      z2: tokenizer.parse()
     }
-  },
+  ],
+  // round 7
+  (tokenizer) => ({
+    com: tokenizer.parse()
+  }),
+  // round 8
+  (tokenizer) => ({
+    u_i: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
+    },
+    t_i: {
+      x: tokenizer.parse(),
+      y: tokenizer.parse()
+    },
+    blind_factor: tokenizer.parse()
+  }),
   // round 9
-  function (tokenizer) {
-    return tokenizer.parse()
-  },
+  (tokenizer) => tokenizer.parse()
 ]
 
-module.exports = function (isKeygen, round, value) {
-  value = Buffer.from(value.substr(2), 'hex')
-  const tokenizer = Tokenizer(value)
-  const roundNumber = parseInt(round[round.length - 1])
+function decode(isKeygen, round, value) {
+  const newValue = Buffer.from(value.substr(2), 'hex')
+  const tokenizer = Tokenizer(newValue)
+  const roundNumber = parseInt(round[round.length - 1], 10)
   const decoder = (isKeygen ? keygenDecoders : signDecoders)[roundNumber]
   return JSON.stringify(decoder(tokenizer))
 }
+
+module.exports = decode
diff --git a/src/oracle/proxy/encode.js b/src/oracle/proxy/encode.js
index 1178306..4a18410 100644
--- a/src/oracle/proxy/encode.js
+++ b/src/oracle/proxy/encode.js
@@ -2,43 +2,44 @@ const BN = require('bignumber.js')
 
 const { padZeros } = require('./crypto')
 
-function makeBuffer (value, length = 32, base = 16) {
+function makeBuffer(value, length = 32, base = 16) {
   return Buffer.from(padZeros(new BN(value, base).toString(16), length * 2), 'hex')
 }
 
 const keygenEncoders = [
   null,
   // round 1
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.e.n, 256, 10)
     yield makeBuffer(value.com)
-    for (let x of value.correct_key_proof.sigma_vec) {
-      yield makeBuffer(x, 256, 10)
+    for (let i = 0; i < value.correct_key_proof.sigma_vec.length; i += 1) {
+      yield makeBuffer(value.correct_key_proof.sigma_vecp[i], 256, 10)
     }
   },
   // round 2
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.blind_factor)
     yield makeBuffer(value.y_i.x)
     yield makeBuffer(value.y_i.y)
   },
   // round 3
-  function * (value) {
-    yield Buffer.from([ value.ciphertext.length ])
+  function* g(value) {
+    yield Buffer.from([value.ciphertext.length])
     yield Buffer.from(value.ciphertext) // 32 bytes or less
     yield Buffer.from(value.tag) // 16 bytes or less
   },
   // round 4
-  function * (value) {
-    yield Buffer.from([ value.parameters.threshold ]) // 1 byte
-    yield Buffer.from([ value.parameters.share_count ]) // 1 byte
-    for (let x of value.commitments) {
+  function* g(value) {
+    yield Buffer.from([value.parameters.threshold]) // 1 byte
+    yield Buffer.from([value.parameters.share_count]) // 1 byte
+    for (let i = 0; i < value.commitments.length; i += 1) {
+      const x = value.correct_key_proof.sigma_vec[i]
       yield makeBuffer(x.x)
       yield makeBuffer(x.y)
     }
   },
   // round 5
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.pk.x)
     yield makeBuffer(value.pk.y)
     yield makeBuffer(value.pk_t_rand_commitment.x)
@@ -49,17 +50,17 @@ const keygenEncoders = [
 
 const signEncoders = [
   // round 0
-  function * (value) {
-    yield Buffer.from([ value ])
+  function* g(value) {
+    yield Buffer.from([value])
   },
   // round 1
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value[0].com)
     yield makeBuffer(value[1].c, 512)
   },
   // round 2
-  function * (value) {
-    for (let i = 0; i < 2; i++) {
+  function* g(value) {
+    for (let i = 0; i < 2; i += 1) {
       yield makeBuffer(value[i].c, 512)
       yield makeBuffer(value[i].b_proof.pk.x)
       yield makeBuffer(value[i].b_proof.pk.y)
@@ -74,21 +75,21 @@ const signEncoders = [
     }
   },
   // round 3
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value)
   },
   // round 4
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.blind_factor)
     yield makeBuffer(value.g_gamma_i.x)
     yield makeBuffer(value.g_gamma_i.y)
   },
   // round 5
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.com)
   },
   // round 6
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value[0].V_i.x)
     yield makeBuffer(value[0].V_i.y)
     yield makeBuffer(value[0].A_i.x)
@@ -104,11 +105,11 @@ const signEncoders = [
     yield makeBuffer(value[1].z2)
   },
   // round 7
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.com)
   },
   // round 8
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value.u_i.x)
     yield makeBuffer(value.u_i.y)
     yield makeBuffer(value.t_i.x)
@@ -116,23 +117,23 @@ const signEncoders = [
     yield makeBuffer(value.blind_factor)
   },
   // round 9
-  function * (value) {
+  function* g(value) {
     yield makeBuffer(value)
-  },
+  }
 ]
 
-module.exports = function (isKeygen, round, value) {
+function encode(isKeygen, round, value) {
   const parsedValue = JSON.parse(value)
-  const roundNumber = parseInt(round[round.length - 1])
+  const roundNumber = parseInt(round[round.length - 1], 10)
   const encoder = (isKeygen ? keygenEncoders : signEncoders)[roundNumber]
   const generator = encoder(parsedValue)
   const buffers = []
-  let next
-  while (true) {
-    next = generator.next()
-    if (next.done)
-      break
+  let next = generator.next()
+  while (!next.done) {
     buffers.push(next.value)
+    next = generator.next()
   }
   return Buffer.concat(buffers)
 }
+
+module.exports = encode
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 99122a7..ef7e76f 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -12,8 +12,8 @@ const logger = require('./logger')
 const { publicKeyToAddress } = require('./crypto')
 
 const {
-  HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS, VALIDATOR_PRIVATE_KEY, HOME_CHAIN_ID,
-  SIDE_CHAIN_ID, HOME_TOKEN_ADDRESS, FOREIGN_URL, FOREIGN_ASSET
+  HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS, VALIDATOR_PRIVATE_KEY,
+  HOME_TOKEN_ADDRESS, FOREIGN_URL, FOREIGN_ASSET
 } = process.env
 const abiSharedDb = require('./contracts_data/SharedDB.json').abi
 const abiBridge = require('./contracts_data/Bridge.json').abi
@@ -39,28 +39,9 @@ const app = express()
 app.use(express.json())
 app.use(express.urlencoded({ extended: true }))
 
-app.post('/get', get)
-app.post('/set', set)
-app.post('/signupkeygen', signupKeygen)
-app.post('/signupsign', signupSign)
-
-app.post('/confirmKeygen', confirmKeygen)
-app.post('/confirmFundsTransfer', confirmFundsTransfer)
-app.post('/transfer', transfer)
-
 const votesProxyApp = express()
-votesProxyApp.use(express.json())
-votesProxyApp.use(express.urlencoded({ extended: true }))
 
-votesProxyApp.get('/vote/startVoting', voteStartVoting)
-votesProxyApp.get('/vote/startKeygen', voteStartKeygen)
-votesProxyApp.get('/vote/cancelKeygen', voteCancelKeygen)
-votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
-votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
-votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
-votesProxyApp.get('/info', info)
-
-async function main () {
+async function main() {
   homeValidatorNonce = await homeWeb3.eth.getTransactionCount(validatorAddress)
   sideValidatorNonce = await sideWeb3.eth.getTransactionCount(validatorAddress)
 
@@ -80,35 +61,77 @@ async function main () {
 
 main()
 
-function Ok (data) {
+function Ok(data) {
   return { Ok: data }
 }
 
-function Err (data) {
+function Err(data) {
   return { Err: data }
 }
 
-async function get (req, res) {
+function sideSendQuery(query) {
+  return lock.acquire('home', async () => {
+    logger.debug('Sending side query')
+    const encodedABI = query.encodeABI()
+    const senderResponse = await sideSender({
+      data: encodedABI,
+      to: SIDE_SHARED_DB_ADDRESS,
+      nonce: sideValidatorNonce
+    })
+    if (senderResponse !== true) {
+      sideValidatorNonce += 1
+    }
+    return senderResponse
+  })
+}
+
+function homeSendQuery(query) {
+  return lock.acquire('home', async () => {
+    logger.debug('Sending home query')
+    const encodedABI = query.encodeABI()
+    const senderResponse = await homeSender({
+      data: encodedABI,
+      to: HOME_BRIDGE_ADDRESS,
+      nonce: homeValidatorNonce
+    })
+    if (senderResponse !== true) {
+      homeValidatorNonce += 1
+    }
+    return senderResponse
+  })
+}
+
+async function get(req, res) {
   logger.debug('Get call, %o', req.body.key)
   const round = req.body.key.second
   const uuid = req.body.key.third
   let from
-  if (uuid.startsWith('k'))
-    from = (await bridge.methods.getNextValidators().call())[parseInt(req.body.key.first) - 1]
-  else {
-    const validators = await bridge.methods.getValidators().call()
-    from = await sharedDb.methods.getSignupAddress(uuid, validators, parseInt(req.body.key.first)).call()
+  if (uuid.startsWith('k')) {
+    from = (await bridge.methods.getNextValidators()
+      .call())[parseInt(req.body.key.first, 10) - 1]
+  } else {
+    const validators = await bridge.methods.getValidators()
+      .call()
+    from = await sharedDb.methods.getSignupAddress(
+      uuid,
+      validators, parseInt(req.body.key.first, 10)
+    )
+      .call()
   }
   const to = Number(req.body.key.fourth) // 0 if empty
   const key = homeWeb3.utils.sha3(`${round}_${to}`)
 
-  const data = await sharedDb.methods.getData(from, sideWeb3.utils.sha3(uuid), key).call()
+  const data = await sharedDb.methods.getData(from, sideWeb3.utils.sha3(uuid), key)
+    .call()
 
   if (data.length > 2) {
     logger.trace(`Received encoded data: ${data}`)
     const decoded = decode(uuid[0] === 'k', round, data)
     logger.trace('Decoded data: %o', decoded)
-    res.send(Ok({ key: req.body.key, value: decoded }))
+    res.send(Ok({
+      key: req.body.key,
+      value: decoded
+    }))
   } else {
     setTimeout(() => res.send(Err(null)), 1000)
   }
@@ -116,7 +139,7 @@ async function get (req, res) {
   logger.debug('Get end')
 }
 
-async function set (req, res) {
+async function set(req, res) {
   logger.debug('Set call')
   const round = req.body.key.second
   const uuid = req.body.key.third
@@ -134,21 +157,26 @@ async function set (req, res) {
   logger.debug('Set end')
 }
 
-async function signupKeygen (req, res) {
+async function signupKeygen(req, res) {
   logger.debug('SignupKeygen call')
-  const epoch = (await bridge.methods.nextEpoch().call()).toNumber()
-  const partyId = (await bridge.methods.getNextPartyId(validatorAddress).call()).toNumber()
+  const epoch = (await bridge.methods.nextEpoch()
+    .call()).toNumber()
+  const partyId = (await bridge.methods.getNextPartyId(validatorAddress)
+    .call()).toNumber()
 
   if (partyId === 0) {
     res.send(Err({ message: 'Not a validator' }))
     logger.debug('Not a validator')
   } else {
-    res.send(Ok({ uuid: `k${epoch}`, number: partyId }))
+    res.send(Ok({
+      uuid: `k${epoch}`,
+      number: partyId
+    }))
     logger.debug('SignupKeygen end')
   }
 }
 
-async function signupSign (req, res) {
+async function signupSign(req, res) {
   logger.debug('SignupSign call')
   const hash = sideWeb3.utils.sha3(`0x${req.body.third}`)
   const query = sharedDb.methods.signupSign(hash)
@@ -157,19 +185,27 @@ async function signupSign (req, res) {
 
   // Already have signup
   if (receipt.status === false) {
-    res.send(Ok({ uuid: hash, number: 0 }))
+    res.send(Ok({
+      uuid: hash,
+      number: 0
+    }))
     logger.debug('Already have signup')
     return
   }
 
-  const validators = await bridge.methods.getValidators().call()
-  const id = (await sharedDb.methods.getSignupNumber(hash, validators, validatorAddress).call()).toNumber()
+  const validators = await bridge.methods.getValidators()
+    .call()
+  const id = (await sharedDb.methods.getSignupNumber(hash, validators, validatorAddress)
+    .call()).toNumber()
 
-  res.send(Ok({ uuid: hash, number: id }))
+  res.send(Ok({
+    uuid: hash,
+    number: id
+  }))
   logger.debug('SignupSign end')
 }
 
-async function confirmKeygen (req, res) {
+async function confirmKeygen(req, res) {
   logger.debug('Confirm keygen call')
   const { x, y } = req.body[5]
   const query = bridge.methods.confirmKeygen(`0x${x}`, `0x${y}`)
@@ -178,7 +214,7 @@ async function confirmKeygen (req, res) {
   logger.debug('Confirm keygen end')
 }
 
-async function confirmFundsTransfer (req, res) {
+async function confirmFundsTransfer(req, res) {
   logger.debug('Confirm funds transfer call')
   const query = bridge.methods.confirmFundsTransfer()
   await homeSendQuery(query)
@@ -186,49 +222,7 @@ async function confirmFundsTransfer (req, res) {
   logger.debug('Confirm funds transfer end')
 }
 
-function sideSendQuery (query) {
-  return lock.acquire('home', async () => {
-    logger.debug('Sending side query')
-    const encodedABI = query.encodeABI()
-    const senderResponse = await sideSender({
-      data: encodedABI,
-      to: SIDE_SHARED_DB_ADDRESS,
-      nonce: sideValidatorNonce
-    })
-    if (senderResponse !== true) {
-      sideValidatorNonce++
-    }
-    return senderResponse
-  })
-}
-
-function homeSendQuery (query) {
-  return lock.acquire('home', async () => {
-    logger.debug('Sending home query')
-    const encodedABI = query.encodeABI()
-    const senderResponse = await homeSender({
-      data: encodedABI,
-      to: HOME_BRIDGE_ADDRESS,
-      nonce: homeValidatorNonce
-    })
-    if (senderResponse !== true) {
-      homeValidatorNonce++
-    }
-    return senderResponse
-  })
-}
-
-function parseReason (message) {
-  const result = /(?<="reason":").*?(?=")/.exec(message)
-  return result ? result[0] : ''
-}
-
-function parseError (message) {
-  const result = /(?<="error":").*?(?=")/.exec(message)
-  return result ? result[0] : ''
-}
-
-async function sendVote (query, req, res, waitFlag = false) {
+async function sendVote(query, req, res, waitFlag = false) {
   try {
     const sentQuery = await homeSendQuery(query)
     let { txHash, gasLimit } = sentQuery
@@ -262,43 +256,43 @@ async function sendVote (query, req, res, waitFlag = false) {
   }
 }
 
-async function voteStartVoting (req, res) {
+async function voteStartVoting(req, res) {
   logger.info('Voting for starting new epoch voting process')
   const query = bridge.methods.startVoting()
   sendVote(query, req, res, true)
 }
 
-async function voteStartKeygen (req, res) {
+async function voteStartKeygen(req, res) {
   logger.info('Voting for starting new epoch keygen')
   const query = bridge.methods.voteStartKeygen()
   sendVote(query, req, res)
 }
 
-async function voteCancelKeygen (req, res) {
+async function voteCancelKeygen(req, res) {
   logger.info('Voting for cancelling new epoch keygen')
   const query = bridge.methods.voteCancelKeygen()
   sendVote(query, req, res)
 }
 
-async function voteAddValidator (req, res) {
+async function voteAddValidator(req, res) {
   logger.info('Voting for adding new validator')
   const query = bridge.methods.voteAddValidator(req.params.validator)
   sendVote(query, req, res)
 }
 
-async function voteChangeThreshold (req, res) {
+async function voteChangeThreshold(req, res) {
   logger.info('Voting for changing threshold')
   const query = bridge.methods.voteChangeThreshold(req.params.threshold)
   sendVote(query, req, res)
 }
 
-async function voteRemoveValidator (req, res) {
+async function voteRemoveValidator(req, res) {
   logger.info('Voting for removing validator')
   const query = bridge.methods.voteRemoveValidator(req.params.validator)
   sendVote(query, req, res, true)
 }
 
-function decodeStatus (status) {
+function decodeStatus(status) {
   switch (status) {
     case 0:
       return 'ready'
@@ -308,10 +302,12 @@ function decodeStatus (status) {
       return 'keygen'
     case 3:
       return 'funds_transfer'
+    default:
+      return 'unknown_state'
   }
 }
 
-function boundX (x) {
+function boundX(x) {
   try {
     return x.toNumber()
   } catch (e) {
@@ -319,32 +315,101 @@ function boundX (x) {
   }
 }
 
-async function info (req, res) {
+function toNumber(x) {
+  return x.toNumber()
+}
+
+async function transfer(req, res) {
+  logger.info('Transfer start')
+  const { hash, to, value } = req.body
+  if (homeWeb3.utils.isAddress(to)) {
+    logger.info(`Calling transfer to ${to}, ${value} tokens`)
+    const query = bridge.methods.transfer(hash, to, `0x${new BN(value).toString(16)}`)
+    await homeSendQuery(query)
+  }
+  res.send()
+  logger.info('Transfer end')
+}
+
+function getForeignBalances(address) {
+  return httpClient
+    .get(`/api/v1/account/${address}`)
+    .then((res) => res.data.balances.reduce((prev, cur) => {
+      // eslint-disable-next-line no-param-reassign
+      prev[cur.symbol] = cur.free
+      return prev
+    }, {}))
+    .catch(() => ({}))
+}
+
+async function info(req, res) {
   logger.debug('Info start')
   try {
-    const [ x, y, epoch, rangeSize, nextRangeSize, epochStartBlock, foreignNonce, nextEpoch, threshold, nextThreshold, validators, nextValidators, status, homeBalance ] = await Promise.all([
-      bridge.methods.getX().call().then(x => new BN(x).toString(16)),
-      bridge.methods.getY().call().then(x => new BN(x).toString(16)),
-      bridge.methods.epoch().call().then(x => x.toNumber()),
-      bridge.methods.getRangeSize().call().then(x => x.toNumber()),
-      bridge.methods.getNextRangeSize().call().then(x => x.toNumber()),
-      bridge.methods.getStartBlock().call().then(x => x.toNumber()),
-      bridge.methods.getNonce().call().then(boundX),
-      bridge.methods.nextEpoch().call().then(x => x.toNumber()),
-      bridge.methods.getThreshold().call().then(x => x.toNumber()),
-      bridge.methods.getNextThreshold().call().then(x => x.toNumber()),
-      bridge.methods.getValidators().call(),
-      bridge.methods.getNextValidators().call(),
-      bridge.methods.status().call(),
-      token.methods.balanceOf(HOME_BRIDGE_ADDRESS).call().then(x => parseFloat(new BN(x).dividedBy(10 ** 18).toFixed(8, 3)))
+    const [
+      x, y, epoch, rangeSize, nextRangeSize, epochStartBlock, foreignNonce, nextEpoch,
+      threshold, nextThreshold, validators, nextValidators, status, homeBalance
+    ] = await Promise.all([
+      bridge.methods.getX()
+        .call()
+        .then((value) => new BN(value).toString(16)),
+      bridge.methods.getY()
+        .call()
+        .then((value) => new BN(value).toString(16)),
+      bridge.methods.epoch()
+        .call()
+        .then(toNumber),
+      bridge.methods.getRangeSize()
+        .call()
+        .then(toNumber),
+      bridge.methods.getNextRangeSize()
+        .call()
+        .then(toNumber),
+      bridge.methods.getStartBlock()
+        .call()
+        .then(toNumber),
+      bridge.methods.getNonce()
+        .call()
+        .then(boundX),
+      bridge.methods.nextEpoch()
+        .call()
+        .then(toNumber),
+      bridge.methods.getThreshold()
+        .call()
+        .then(toNumber),
+      bridge.methods.getNextThreshold()
+        .call()
+        .then(toNumber),
+      bridge.methods.getValidators()
+        .call(),
+      bridge.methods.getNextValidators()
+        .call(),
+      bridge.methods.status()
+        .call(),
+      token.methods.balanceOf(HOME_BRIDGE_ADDRESS)
+        .call()
+        .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18)
+          .toFixed(8, 3)))
     ])
-    const [ confirmationsForFundsTransfer, votesForVoting, votesForKeygen, votesForCancelKeygen ] = await Promise.all([
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack([ 'uint8', 'uint256' ], [ 1, nextEpoch ]))).call().then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack([ 'uint8', 'uint256' ], [ 2, nextEpoch ]))).call().then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack([ 'uint8', 'uint256' ], [ 7, nextEpoch ]))).call().then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack([ 'uint8', 'uint256' ], [ 8, nextEpoch ]))).call().then(boundX)
+    const [
+      confirmationsForFundsTransfer, votesForVoting, votesForKeygen, votesForCancelKeygen
+    ] = await Promise.all([
+      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [1, nextEpoch])))
+        .call()
+        .then(boundX),
+      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [2, nextEpoch])))
+        .call()
+        .then(boundX),
+      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [7, nextEpoch])))
+        .call()
+        .then(boundX),
+      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [8, nextEpoch])))
+        .call()
+        .then(boundX)
     ])
-    const foreignAddress = publicKeyToAddress({ x, y })
+    const foreignAddress = publicKeyToAddress({
+      x,
+      y
+    })
     const balances = await getForeignBalances(foreignAddress)
     const msg = {
       epoch,
@@ -361,7 +426,7 @@ async function info (req, res) {
       nextValidators,
       homeBalance,
       foreignBalanceTokens: parseFloat(balances[FOREIGN_ASSET]) || 0,
-      foreignBalanceNative: parseFloat(balances['BNB']) || 0,
+      foreignBalanceNative: parseFloat(balances.BNB) || 0,
       bridgeStatus: decodeStatus(status),
       votesForVoting,
       votesForKeygen,
@@ -372,29 +437,27 @@ async function info (req, res) {
     res.send(msg)
   } catch (e) {
     logger.debug('%o', e)
-    res.send({ message: 'Something went wrong, resend request', error: e })
+    res.send({
+      message: 'Something went wrong, resend request',
+      error: e
+    })
   }
   logger.debug('Info end')
 }
 
-async function transfer (req, res) {
-  logger.info('Transfer start')
-  const { hash, to, value } = req.body
-  if (homeWeb3.utils.isAddress(to)) {
-    logger.info(`Calling transfer to ${to}, ${value} tokens`)
-    const query = bridge.methods.transfer(hash, to, '0x' + (new BN(value).toString(16)))
-    await homeSendQuery(query)
-  }
-  res.send()
-  logger.info('Transfer end')
-}
+app.post('/get', get)
+app.post('/set', set)
+app.post('/signupkeygen', signupKeygen)
+app.post('/signupsign', signupSign)
 
-function getForeignBalances (address) {
-  return httpClient
-    .get(`/api/v1/account/${address}`)
-    .then(res => res.data.balances.reduce((prev, cur) => {
-      prev[cur.symbol] = cur.free
-      return prev
-    }, {}))
-    .catch(err => ({}))
-}
+app.post('/confirmKeygen', confirmKeygen)
+app.post('/confirmFundsTransfer', confirmFundsTransfer)
+app.post('/transfer', transfer)
+
+votesProxyApp.get('/vote/startVoting', voteStartVoting)
+votesProxyApp.get('/vote/startKeygen', voteStartKeygen)
+votesProxyApp.get('/vote/cancelKeygen', voteCancelKeygen)
+votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
+votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
+votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
+votesProxyApp.get('/info', info)
diff --git a/src/oracle/proxy/package.json b/src/oracle/proxy/package.json
index d941190..6624098 100644
--- a/src/oracle/proxy/package.json
+++ b/src/oracle/proxy/package.json
@@ -12,5 +12,8 @@
     "ethers": "4.0.37",
     "pino": "5.13.4",
     "pino-pretty": "3.2.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index bba562a..c18ed41 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -7,28 +7,28 @@ const logger = require('./logger')
 
 const { GAS_LIMIT_FACTOR, MAX_GAS_LIMIT } = process.env
 
-function sendRpcRequest (url, method, params) {
+function sendRpcRequest(url, method, params) {
   return axios.post(url, {
     jsonrpc: '2.0',
     method,
     params,
     id: 1
   })
-    .then(res => res.data)
-    .catch(async e => {
+    .then((res) => res.data)
+    .catch(async () => {
       logger.warn(`Request to ${url}, method ${method} failed, retrying`)
-      await new Promise(res => setTimeout(res, 1000))
+      await new Promise((res) => setTimeout(res, 1000))
       return sendRpcRequest(url, method, params)
     })
 }
 
-async function createSender (url, privateKey) {
+async function createSender(url, privateKey) {
   const web3 = new Web3(url, null, { transactionConfirmationBlocks: 1 })
   const signer = new ethers.utils.SigningKey(privateKey)
 
   const chainId = await web3.eth.net.getId()
-  return async function (tx) {
-    tx = {
+  return async function send(tx) {
+    const newTx = {
       data: tx.data,
       to: tx.to,
       nonce: tx.nonce,
@@ -38,29 +38,30 @@ async function createSender (url, privateKey) {
     }
 
     try {
-      logger.trace(`Preparing and sending transaction %o on ${url}`, tx)
-      const estimate = await sendRpcRequest(url, 'eth_estimateGas', [ {
+      logger.trace(`Preparing and sending transaction %o on ${url}`, newTx)
+      const estimate = await sendRpcRequest(url, 'eth_estimateGas', [{
         from: signer.address,
-        to: tx.to,
-        data: tx.data,
-        gasPrice: tx.gasPrice,
-        value: tx.value,
+        to: newTx.to,
+        data: newTx.data,
+        gasPrice: newTx.gasPrice,
+        value: newTx.value,
         gas: `0x${new BN(MAX_GAS_LIMIT).toString(16)}`
-      } ])
+      }])
 
       if (estimate.error) {
         logger.debug('Gas estimate failed %o, skipping tx, reverting nonce', estimate.error)
         return true
       }
-      const gasLimit = BN.min(new BN(estimate.result, 16).multipliedBy(GAS_LIMIT_FACTOR), MAX_GAS_LIMIT)
-      tx.gasLimit = `0x${new BN(gasLimit).toString(16)}`
+      const gasLimit = BN.min(new BN(estimate.result, 16)
+        .multipliedBy(GAS_LIMIT_FACTOR), MAX_GAS_LIMIT)
+      newTx.gasLimit = `0x${new BN(gasLimit).toString(16)}`
       logger.trace(`Estimated gas to ${gasLimit}`)
 
       const hash = web3.utils.sha3(ethers.utils.serializeTransaction(tx))
       const signature = signer.signDigest(hash)
       const signedTx = ethers.utils.serializeTransaction(tx, signature)
 
-      const { result, error } = await sendRpcRequest(url, 'eth_sendRawTransaction', [ signedTx ])
+      const { result, error } = await sendRpcRequest(url, 'eth_sendRawTransaction', [signedTx])
       // handle nonce error
       // handle insufficient funds error
       if (error) {
@@ -68,7 +69,10 @@ async function createSender (url, privateKey) {
         return false
       }
 
-      return { txHash: result, gasLimit: tx.gasLimit }
+      return {
+        txHash: result,
+        gasLimit: tx.gasLimit
+      }
     } catch (e) {
       logger.warn('Something failed, %o', e)
       return false
@@ -76,16 +80,19 @@ async function createSender (url, privateKey) {
   }
 }
 
-async function waitForReceipt (url, txHash) {
+async function waitForReceipt(url, txHash) {
   while (true) {
-    const { result, error } = await sendRpcRequest(url, 'eth_getTransactionReceipt', [ txHash ])
+    const { result, error } = await sendRpcRequest(url, 'eth_getTransactionReceipt', [txHash])
 
     if (result === null || error) {
-      await new Promise(res => setTimeout(res, 1000))
+      await new Promise((res) => setTimeout(res, 1000))
     } else {
       return result
     }
   }
 }
 
-module.exports = { createSender, waitForReceipt }
+module.exports = {
+  createSender,
+  waitForReceipt
+}
diff --git a/src/oracle/scripts/resetToBlock/package.json b/src/oracle/scripts/resetToBlock/package.json
index f4546c1..3a3d820 100644
--- a/src/oracle/scripts/resetToBlock/package.json
+++ b/src/oracle/scripts/resetToBlock/package.json
@@ -3,5 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "ioredis": "4.14.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/oracle/scripts/resetToBlock/resetToBlock.js b/src/oracle/scripts/resetToBlock/resetToBlock.js
index bcbaddf..a7d540d 100644
--- a/src/oracle/scripts/resetToBlock/resetToBlock.js
+++ b/src/oracle/scripts/resetToBlock/resetToBlock.js
@@ -12,7 +12,7 @@ redis.on('error', () => {
 })
 
 redis.on('connect', async () => {
-  await redis.set('homeBlock', parseInt(process.argv[2]))
+  await redis.set('homeBlock', parseInt(process.argv[2], 10))
   await redis.save()
   redis.disconnect()
 })
diff --git a/src/oracle/shared/amqp.js b/src/oracle/shared/amqp.js
index 8bc751e..e6a88d9 100644
--- a/src/oracle/shared/amqp.js
+++ b/src/oracle/shared/amqp.js
@@ -2,30 +2,30 @@ const amqp = require('amqplib')
 
 const logger = require('./logger')
 
-function _connectRabbit (url) {
-  return amqp.connect(url).catch(() => {
-    logger.debug('Failed to connect to rabbitmqServer, reconnecting')
-    return new Promise(resolve =>
-      setTimeout(() => resolve(_connectRabbit(url)), 2000)
-    )
-  })
-}
-
 async function connectRabbit(url) {
-  const connection = await _connectRabbit(url)
-  return await connection.createChannel()
-}
-
-async function assertQueue (channel, name) {
-  const queue = await channel.assertQueue(name)
-  return {
-    name: queue.queue,
-    send: msg => channel.sendToQueue(queue.queue, Buffer.from(JSON.stringify(msg)), {
-      persistent: true
-    }),
-    get: consumer => channel.get(queue.queue, consumer),
-    consume: consumer => channel.consume(queue.queue, consumer)
+  while (true) {
+    try {
+      return (await amqp.connect(url)).createChannel()
+    } catch (e) {
+      logger.debug('Failed to connect to rabbitmqServer, reconnecting')
+      await new Promise((resolve) => setTimeout(resolve, 2000))
+    }
   }
 }
 
-module.exports = { connectRabbit, assertQueue }
+async function assertQueue(channel, name) {
+  const queue = await channel.assertQueue(name)
+  return {
+    name: queue.queue,
+    send: (msg) => channel.sendToQueue(queue.queue, Buffer.from(JSON.stringify(msg)), {
+      persistent: true
+    }),
+    get: (consumer) => channel.get(queue.queue, consumer),
+    consume: (consumer) => channel.consume(queue.queue, consumer)
+  }
+}
+
+module.exports = {
+  connectRabbit,
+  assertQueue
+}
diff --git a/src/oracle/shared/crypto.js b/src/oracle/shared/crypto.js
index 16c0fd8..358e61c 100644
--- a/src/oracle/shared/crypto.js
+++ b/src/oracle/shared/crypto.js
@@ -1,7 +1,27 @@
 const crypto = require('crypto')
 const bech32 = require('bech32')
 
-function publicKeyToAddress ({ x, y }) {
+function padZeros(s, len) {
+  while (s.length < len) {
+    // eslint-disable-next-line no-param-reassign
+    s = `0${s}`
+  }
+  return s
+}
+
+function sha256(bytes) {
+  return crypto.createHash('sha256')
+    .update(bytes)
+    .digest('hex')
+}
+
+function ripemd160(bytes) {
+  return crypto.createHash('ripemd160')
+    .update(bytes)
+    .digest('hex')
+}
+
+function publicKeyToAddress({ x, y }) {
   const compact = (parseInt(y[y.length - 1], 16) % 2 ? '03' : '02') + padZeros(x, 64)
   const sha256Hash = sha256(Buffer.from(compact, 'hex'))
   const hash = ripemd160(Buffer.from(sha256Hash, 'hex'))
@@ -9,18 +29,8 @@ function publicKeyToAddress ({ x, y }) {
   return bech32.encode('tbnb', words)
 }
 
-function padZeros (s, len) {
-  while (s.length < len)
-    s = '0' + s
-  return s
+module.exports = {
+  publicKeyToAddress,
+  padZeros,
+  sha256
 }
-
-function sha256 (bytes) {
-  return crypto.createHash('sha256').update(bytes).digest('hex')
-}
-
-function ripemd160 (bytes) {
-  return crypto.createHash('ripemd160').update(bytes).digest('hex')
-}
-
-module.exports = { publicKeyToAddress, padZeros, sha256 }
diff --git a/src/oracle/shared/db.js b/src/oracle/shared/db.js
index a6732f7..1faf6fc 100644
--- a/src/oracle/shared/db.js
+++ b/src/oracle/shared/db.js
@@ -1,6 +1,7 @@
 const Redis = require('ioredis')
 
 const logger = require('./logger')
+
 logger.info('Connecting to redis')
 
 const redis = new Redis({
@@ -14,7 +15,7 @@ redis.on('connect', () => {
   logger.info('Connected to redis')
 })
 
-redis.on('error', e => {
+redis.on('error', (e) => {
   logger.warn('Redis error %o', e)
 })
 
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 77dfc80..77f9a7e 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -9,17 +9,15 @@ const { publicKeyToAddress } = require('./crypto')
 const { RABBITMQ_URL, PROXY_URL } = process.env
 
 const app = express()
-app.get('/start', (req, res) => {
-  logger.info('Ready to start')
-  ready = true
-  res.send()
-})
-app.listen(8001, () => logger.debug('Listening on 8001'))
 
 let currentKeygenEpoch = null
 let ready = false
 
-async function main () {
+async function confirmKeygen(keysFile) {
+  exec.execSync(`curl -X POST -H "Content-Type: application/json" -d @"${keysFile}" "${PROXY_URL}/confirmKeygen"`, { stdio: 'pipe' })
+}
+
+async function main() {
   logger.info('Connecting to RabbitMQ server')
   const channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to epoch events queue')
@@ -27,11 +25,11 @@ async function main () {
   const cancelKeygenQueue = await assertQueue(channel, 'cancelKeygenQueue')
 
   while (!ready) {
-    await new Promise(res => setTimeout(res, 1000))
+    await new Promise((res) => setTimeout(res, 1000))
   }
 
   channel.prefetch(1)
-  keygenQueue.consume(msg => {
+  keygenQueue.consume((msg) => {
     const { epoch, parties, threshold } = JSON.parse(msg.content)
     logger.info(`Consumed new epoch event, starting keygen for epoch ${epoch}`)
 
@@ -41,8 +39,11 @@ async function main () {
     currentKeygenEpoch = epoch
 
     logger.debug('Writing params')
-    fs.writeFileSync('./params', JSON.stringify({ parties: parties.toString(), threshold: threshold.toString() }))
-    const cmd = exec.execFile('./keygen-entrypoint.sh', [ PROXY_URL, keysFile ], async () => {
+    fs.writeFileSync('./params', JSON.stringify({
+      parties: parties.toString(),
+      threshold: threshold.toString()
+    }))
+    const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], async () => {
       currentKeygenEpoch = null
       if (fs.existsSync(keysFile)) {
         logger.info(`Finished keygen for epoch ${epoch}`)
@@ -57,11 +58,11 @@ async function main () {
       logger.debug('Ack for keygen message')
       channel.ack(msg)
     })
-    cmd.stdout.on('data', data => logger.debug(data.toString()))
-    cmd.stderr.on('data', data => logger.debug(data.toString()))
+    cmd.stdout.on('data', (data) => logger.debug(data.toString()))
+    cmd.stderr.on('data', (data) => logger.debug(data.toString()))
   })
 
-  cancelKeygenQueue.consume(async msg => {
+  cancelKeygenQueue.consume(async (msg) => {
     const { epoch } = JSON.parse(msg.content)
     logger.info(`Consumed new cancel event for epoch ${epoch} keygen`)
     if (currentKeygenEpoch === epoch) {
@@ -72,8 +73,12 @@ async function main () {
   })
 }
 
-main()
 
-async function confirmKeygen (keysFile) {
-  exec.execSync(`curl -X POST -H "Content-Type: application/json" -d @"${keysFile}" "${PROXY_URL}/confirmKeygen"`, { stdio: 'pipe' })
-}
+app.get('/start', (req, res) => {
+  logger.info('Ready to start')
+  ready = true
+  res.send()
+})
+app.listen(8001, () => logger.debug('Listening on 8001'))
+
+main()
diff --git a/src/oracle/tss-keygen/package.json b/src/oracle/tss-keygen/package.json
index 64c6c24..ba4680e 100644
--- a/src/oracle/tss-keygen/package.json
+++ b/src/oracle/tss-keygen/package.json
@@ -7,5 +7,8 @@
     "pino": "5.13.4",
     "pino-pretty": "3.2.1",
     "express": "4.17.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/oracle/tss-sign/package.json b/src/oracle/tss-sign/package.json
index 141a555..7d0c822 100644
--- a/src/oracle/tss-sign/package.json
+++ b/src/oracle/tss-sign/package.json
@@ -9,5 +9,8 @@
     "express": "4.17.1",
     "pino": "5.13.4",
     "pino-pretty": "3.2.1"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 5077e6a..2ffe5cb 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -1,24 +1,20 @@
 const exec = require('child_process')
 const fs = require('fs')
 const BN = require('bignumber.js')
+const axios = require('axios')
 const express = require('express')
 
 const logger = require('./logger')
 const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress, sha256 } = require('./crypto')
 
-const app = express()
-app.get('/restart/:attempt', restart)
-app.get('/start', (req, res) => {
-  logger.info('Ready to start')
-  ready = true
-  res.send()
-})
-app.listen(8001, () => logger.debug('Listening on 8001'))
-
-const { RABBITMQ_URL, FOREIGN_URL, PROXY_URL, FOREIGN_ASSET } = process.env
 const Transaction = require('./tx')
-const axios = require('axios')
+
+const app = express()
+
+const {
+  RABBITMQ_URL, FOREIGN_URL, PROXY_URL, FOREIGN_ASSET
+} = process.env
 
 const httpClient = axios.create({ baseURL: FOREIGN_URL })
 
@@ -29,7 +25,126 @@ let ready = false
 let exchangeQueue
 let channel
 
-async function main () {
+async function getExchangeMessages(nonce) {
+  logger.debug('Getting exchange messages')
+  const messages = []
+  while (true) {
+    const msg = await exchangeQueue.get()
+    if (msg === false) {
+      break
+    }
+    const data = JSON.parse(msg.content)
+    logger.debug('Got message %o', data)
+    if (data.nonce !== nonce) {
+      channel.nack(msg, false, true)
+      break
+    }
+    messages.push(msg)
+  }
+  logger.debug(`Found ${messages.length} messages`)
+  return messages
+}
+
+function restart(req, res) {
+  logger.info('Cancelling current sign')
+  nextAttempt = req.params.attempt
+  exec.execSync('pkill gg18_sign || true')
+  cancelled = true
+  res.send('Cancelled')
+}
+
+function confirmFundsTransfer() {
+  exec.execSync(`curl -X POST -H "Content-Type: application/json" "${PROXY_URL}/confirmFundsTransfer"`, { stdio: 'pipe' })
+}
+
+function getAccountFromFile(file) {
+  logger.debug(`Reading ${file}`)
+  if (!fs.existsSync(file)) {
+    logger.debug('No keys found, skipping')
+    return { address: '' }
+  }
+  const publicKey = JSON.parse(fs.readFileSync(file))[5]
+  return {
+    address: publicKeyToAddress(publicKey),
+    publicKey
+  }
+}
+
+function getAccount(address) {
+  logger.info(`Getting account ${address} data`)
+  return httpClient
+    .get(`/api/v1/account/${address}`)
+    .then((res) => res.data)
+    .catch(() => {
+      logger.debug('Retrying')
+      return getAccount(address)
+    })
+}
+
+async function waitForAccountNonce(address, nonce) {
+  cancelled = false
+  logger.info(`Waiting for account ${address} to have nonce ${nonce}`)
+  while (!cancelled) {
+    const { sequence } = await getAccount(address)
+    if (sequence >= nonce) {
+      break
+    }
+    await new Promise((resolve) => setTimeout(resolve, 1000))
+    logger.debug('Waiting for needed account nonce')
+  }
+  logger.info('Account nonce is OK')
+  return !cancelled
+}
+
+
+function sendTx(tx) {
+  return httpClient
+    .post('/api/v1/broadcast?sync=true', tx, {
+      headers: {
+        'Content-Type': 'text/plain'
+      }
+    })
+    .catch((err) => {
+      if (err.response.data.message.includes('Tx already exists in cache')) {
+        logger.debug('Tx already exists in cache')
+        return true
+      }
+      logger.info('Something failed, restarting: %o', err.response)
+      return new Promise((resolve) => setTimeout(() => resolve(sendTx(tx)), 1000))
+    })
+}
+
+function sign(keysFile, hash, tx, publicKey) {
+  return new Promise((resolve) => {
+    const cmd = exec.execFile('./sign-entrypoint.sh', [PROXY_URL, keysFile, hash], async (error) => {
+      if (fs.existsSync('signature')) {
+        logger.info('Finished signature generation')
+        const signature = JSON.parse(fs.readFileSync('signature'))
+        logger.debug('%o', signature)
+
+        logger.info('Building signed transaction')
+        const signedTx = tx.addSignature(publicKey, {
+          r: signature[1],
+          s: signature[3]
+        })
+
+        logger.info('Sending transaction')
+        logger.debug(signedTx)
+        await sendTx(signedTx)
+        resolve(true)
+      } else if (error === null || error.code === 0) {
+        resolve(true)
+      } else {
+        logger.warn('Sign failed')
+        resolve(false)
+      }
+    })
+    cmd.stdout.on('data', (data) => logger.debug(data.toString()))
+    cmd.stderr.on('data', (data) => logger.debug(data.toString()))
+  })
+}
+
+async function main() {
   logger.info('Connecting to RabbitMQ server')
   channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to signature events queue')
@@ -37,15 +152,17 @@ async function main () {
   const signQueue = await assertQueue(channel, 'signQueue')
 
   while (!ready) {
-    await new Promise(res => setTimeout(res, 1000))
+    await new Promise((res) => setTimeout(res, 1000))
   }
 
   channel.prefetch(1)
-  signQueue.consume(async msg => {
+  signQueue.consume(async (msg) => {
     const data = JSON.parse(msg.content)
 
     logger.info('Consumed sign event: %o', data)
-    const { nonce, epoch, newEpoch, parties, threshold } = data
+    const {
+      nonce, epoch, newEpoch, parties, threshold
+    } = data
 
     const keysFile = `/keys/keys${epoch}.store`
     const { address: from, publicKey } = getAccountFromFile(keysFile)
@@ -57,16 +174,22 @@ async function main () {
     const account = await getAccount(from)
 
     logger.debug('Writing params')
-    fs.writeFileSync('./params', JSON.stringify({ parties: parties.toString(), threshold: threshold.toString() }))
+    fs.writeFileSync('./params', JSON.stringify({
+      parties: parties.toString(),
+      threshold: threshold.toString()
+    }))
 
     attempt = 1
 
     if (!newEpoch) {
       const exchanges = await getExchangeMessages(nonce)
-      const exchangesData = exchanges.map(msg => JSON.parse(msg.content))
+      const exchangesData = exchanges.map((exchangeMsg) => JSON.parse(exchangeMsg.content))
 
       if (exchanges.length > 0 && account.sequence <= nonce) {
-        const recipients = exchangesData.map(({ value, recipient }) => ({ to: recipient, tokens: value }))
+        const recipients = exchangesData.map(({ value, recipient }) => ({
+          to: recipient,
+          tokens: value
+        }))
 
         while (true) {
           logger.info(`Building corresponding transfer transaction, nonce ${nonce}`)
@@ -82,16 +205,18 @@ async function main () {
 
           const hash = sha256(tx.getSignBytes())
           logger.info(`Starting signature generation for transaction hash ${hash}`)
-          const done = await sign(keysFile, hash, tx, publicKey) && await waitForAccountNonce(from, nonce + 1)
+          const done = await sign(keysFile, hash, tx, publicKey)
+            && await waitForAccountNonce(from, nonce + 1)
 
           if (done) {
-            exchanges.forEach(msg => channel.ack(msg))
+            // eslint-disable-next-line no-loop-func
+            exchanges.forEach((exchangeMsg) => channel.ack(exchangeMsg))
             break
           }
-          attempt = nextAttempt ? nextAttempt : attempt + 1
+          attempt = nextAttempt || attempt + 1
           logger.warn(`Sign failed, starting next attempt ${attempt}`)
           nextAttempt = null
-          await new Promise(resolve => setTimeout(resolve, 1000))
+          await new Promise((resolve) => setTimeout(resolve, 1000))
         }
       }
     } else if (account.sequence <= nonce) {
@@ -104,27 +229,28 @@ async function main () {
           from,
           accountNumber: account.account_number,
           sequence: nonce,
-          recipients: [ {
+          recipients: [{
             to,
-            tokens: account.balances.find(x => x.symbol === FOREIGN_ASSET).free,
-            bnbs: new BN(account.balances.find(x => x.symbol === 'BNB').free).minus(new BN(60000).div(10 ** 8)),
-          } ],
+            tokens: account.balances.find((token) => token.symbol === FOREIGN_ASSET).free,
+            bnbs: new BN(account.balances.find((token) => token.symbol === 'BNB').free).minus(new BN(60000).div(10 ** 8))
+          }],
           asset: FOREIGN_ASSET,
           memo: `Attempt ${attempt}`
         })
 
         const hash = sha256(tx.getSignBytes())
         logger.info(`Starting signature generation for transaction hash ${hash}`)
-        const done = await sign(keysFile, hash, tx, publicKey) && await waitForAccountNonce(from, nonce + 1)
+        const done = await sign(keysFile, hash, tx, publicKey)
+          && await waitForAccountNonce(from, nonce + 1)
 
         if (done) {
           await confirmFundsTransfer()
           break
         }
-        attempt = nextAttempt ? nextAttempt : attempt + 1
+        attempt = nextAttempt || attempt + 1
         logger.warn(`Sign failed, starting next attempt ${attempt}`)
         nextAttempt = null
-        await new Promise(resolve => setTimeout(resolve, 1000))
+        await new Promise((resolve) => setTimeout(resolve, 1000))
       }
     } else {
       logger.debug('Tx has been already sent')
@@ -134,118 +260,12 @@ async function main () {
   })
 }
 
+app.get('/restart/:attempt', restart)
+app.get('/start', (req, res) => {
+  logger.info('Ready to start')
+  ready = true
+  res.send()
+})
+app.listen(8001, () => logger.debug('Listening on 8001'))
+
 main()
-
-async function getExchangeMessages (nonce) {
-  logger.debug('Getting exchange messages')
-  const messages = []
-  do {
-    const msg = await exchangeQueue.get()
-    if (msg === false) {
-      break
-    }
-    const data = JSON.parse(msg.content)
-    logger.debug('Got message %o', data)
-    if (data.nonce !== nonce) {
-      channel.nack(msg, false, true)
-      break
-    }
-    messages.push(msg)
-  } while (true)
-  logger.debug(`Found ${messages.length} messages`)
-  return messages
-}
-
-function sign (keysFile, hash, tx, publicKey) {
-  return new Promise(resolve => {
-    const cmd = exec.execFile('./sign-entrypoint.sh', [ PROXY_URL, keysFile, hash ], async (error) => {
-      if (fs.existsSync('signature')) {
-        logger.info('Finished signature generation')
-        const signature = JSON.parse(fs.readFileSync('signature'))
-        logger.debug('%o', signature)
-
-        logger.info('Building signed transaction')
-        const signedTx = tx.addSignature(publicKey, { r: signature[1], s: signature[3] })
-
-        logger.info('Sending transaction')
-        logger.debug(signedTx)
-        await sendTx(signedTx)
-        resolve(true)
-      } else if (error === null || error.code === 0) {
-        resolve(true)
-      } else {
-        logger.warn('Sign failed')
-        resolve(false)
-      }
-    })
-    cmd.stdout.on('data', data => logger.debug(data.toString()))
-    cmd.stderr.on('data', data => logger.debug(data.toString()))
-  })
-}
-
-function restart (req, res) {
-  logger.info('Cancelling current sign')
-  nextAttempt = req.params.attempt
-  exec.execSync('pkill gg18_sign || true')
-  cancelled = true
-  res.send('Cancelled')
-}
-
-function confirmFundsTransfer () {
-  exec.execSync(`curl -X POST -H "Content-Type: application/json" "${PROXY_URL}/confirmFundsTransfer"`, { stdio: 'pipe' })
-}
-
-function getAccountFromFile (file) {
-  logger.debug(`Reading ${file}`)
-  if (!fs.existsSync(file)) {
-    logger.debug('No keys found, skipping')
-    return { address: '' }
-  }
-  const publicKey = JSON.parse(fs.readFileSync(file))[5]
-  return {
-    address: publicKeyToAddress(publicKey),
-    publicKey: publicKey
-  }
-}
-
-async function waitForAccountNonce (address, nonce) {
-  cancelled = false
-  logger.info(`Waiting for account ${address} to have nonce ${nonce}`)
-  while (!cancelled) {
-    const sequence = (await getAccount(address)).sequence
-    if (sequence >= nonce)
-      break
-    await new Promise(resolve => setTimeout(resolve, 1000))
-    logger.debug('Waiting for needed account nonce')
-  }
-  logger.info('Account nonce is OK')
-  return !cancelled
-}
-
-function getAccount (address) {
-  logger.info(`Getting account ${address} data`)
-  return httpClient
-    .get(`/api/v1/account/${address}`)
-    .then(res => res.data)
-    .catch(() => {
-      logger.debug('Retrying')
-      return getAccount(address)
-    })
-}
-
-function sendTx (tx) {
-  return httpClient
-    .post(`/api/v1/broadcast?sync=true`, tx, {
-      headers: {
-        'Content-Type': 'text/plain'
-      }
-    })
-    .catch(err => {
-      if (err.response.data.message.includes('Tx already exists in cache'))
-        logger.debug('Tx already exists in cache')
-      else {
-        logger.info('Something failed, restarting: %o', err.response)
-        return new Promise(resolve => setTimeout(() => resolve(sendTx(tx)), 1000))
-      }
-    })
-}
diff --git a/src/oracle/tss-sign/tx.js b/src/oracle/tss-sign/tx.js
index 351e3a6..fa3ec96 100644
--- a/src/oracle/tss-sign/tx.js
+++ b/src/oracle/tss-sign/tx.js
@@ -10,42 +10,52 @@ const { FOREIGN_CHAIN_ID } = process.env
 const BNB_ASSET = 'BNB'
 
 class Transaction {
-  constructor (options) {
-    const { from, accountNumber, sequence, recipients, asset, memo = '' } = options
+  constructor(options) {
+    const {
+      from, accountNumber, sequence, recipients, asset, memo = ''
+    } = options
 
-    const totalTokens = recipients.reduce((sum, { tokens }) => sum.plus(new BN(tokens || 0)), new BN(0))
-    const totalBnbs = recipients.reduce((sum, { bnbs }) => sum.plus(new BN(bnbs || 0)), new BN(0))
+    const totalTokens = recipients.reduce(
+      (sum, { tokens }) => sum.plus(new BN(tokens || 0)), new BN(0)
+    )
+    const totalBnbs = recipients.reduce(
+      (sum, { bnbs }) => sum.plus(new BN(bnbs || 0)), new BN(0)
+    )
     const senderCoins = []
     if (asset && totalTokens.isGreaterThan(0)) {
       senderCoins.push({
         denom: asset,
-        amount: totalTokens.multipliedBy(10 ** 8).toNumber(),
+        amount: totalTokens.multipliedBy(10 ** 8)
+          .toNumber()
       })
     }
     if (totalBnbs.isGreaterThan(0)) {
       senderCoins.push({
         denom: BNB_ASSET,
-        amount: totalBnbs.multipliedBy(10 ** 8).toNumber(),
+        amount: totalBnbs.multipliedBy(10 ** 8)
+          .toNumber()
       })
     }
     senderCoins.sort((a, b) => a.denom > b.denom)
 
-    const inputs = [ {
+    const inputs = [{
       address: from,
       coins: senderCoins
-    } ]
+    }]
     const outputs = recipients.map(({ to, tokens, bnbs }) => {
       const receiverCoins = []
       if (asset && tokens) {
         receiverCoins.push({
           denom: asset,
-          amount: new BN(tokens).multipliedBy(10 ** 8).toNumber(),
+          amount: new BN(tokens).multipliedBy(10 ** 8)
+            .toNumber()
         })
       }
       if (bnbs) {
         receiverCoins.push({
           denom: BNB_ASSET,
-          amount: new BN(bnbs).multipliedBy(10 ** 8).toNumber(),
+          amount: new BN(bnbs).multipliedBy(10 ** 8)
+            .toNumber()
         })
       }
       receiverCoins.sort((a, b) => a.denom > b.denom)
@@ -56,8 +66,14 @@ class Transaction {
     })
 
     const msg = {
-      inputs: inputs.map((x) => ({...x, address: crypto.decodeAddress(x.address)})),
-      outputs: outputs.map((x) => ({...x, address: crypto.decodeAddress(x.address)})),
+      inputs: inputs.map((x) => ({
+        ...x,
+        address: crypto.decodeAddress(x.address)
+      })),
+      outputs: outputs.map((x) => ({
+        ...x,
+        address: crypto.decodeAddress(x.address)
+      })),
       msgType: 'MsgSend'
     }
 
@@ -72,29 +88,31 @@ class Transaction {
       memo,
       msg,
       sequence,
-      type: msg.msgType,
+      type: msg.msgType
     })
   }
 
-  getSignBytes () {
+  getSignBytes() {
     return this.tx.getSignBytes(this.signMsg)
   }
 
-  addSignature (publicKey, signature) {
+  addSignature(publicKey, signature) {
     const yLast = parseInt(publicKey.y[publicKey.y.length - 1], 16)
     const n = new BN('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141', 16)
     const s = new BN(signature.s, 16)
     if (s.gt(n.div(2))) {
       logger.debug('Normalizing s')
-      signature.s = n.minus(s).toString(16)
+      // eslint-disable-next-line no-param-reassign
+      signature.s = n.minus(s)
+        .toString(16)
     }
-    const publicKeyEncoded = Buffer.from('eb5ae98721' + (yLast % 2 ? '03' : '02') + padZeros(publicKey.x, 64), 'hex')
-    this.tx.signatures = [ {
+    const publicKeyEncoded = Buffer.from(`eb5ae98721${yLast % 2 ? '03' : '02'}${padZeros(publicKey.x, 64)}`, 'hex')
+    this.tx.signatures = [{
       pub_key: publicKeyEncoded,
       signature: Buffer.from(padZeros(signature.r, 64) + padZeros(signature.s, 64), 'hex'),
       account_number: this.tx.account_number,
-      sequence: this.tx.sequence,
-    } ]
+      sequence: this.tx.sequence
+    }]
     return this.tx.serialize()
   }
 }
diff --git a/src/test-services/binanceBalance/testGetBinanceBalance.js b/src/test-services/binanceBalance/testGetBinanceBalance.js
index 21d6e8d..6d356b0 100644
--- a/src/test-services/binanceBalance/testGetBinanceBalance.js
+++ b/src/test-services/binanceBalance/testGetBinanceBalance.js
@@ -5,10 +5,14 @@ const { FOREIGN_URL, FOREIGN_ASSET } = process.env
 const address = process.argv[2]
 const httpClient = axios.create({ baseURL: FOREIGN_URL })
 
-httpClient
-  .get(`/api/v1/account/${address}`)
-  .then(res => {
-    console.log(`BNB: ${parseFloat(res.data.balances.find(x => x.symbol === 'BNB').free)}`)
-    console.log(`${FOREIGN_ASSET}: ${parseFloat(res.data.balances.find(x => x.symbol === FOREIGN_ASSET).free)}`)
-  })
-  .catch(console.log)
+function main() {
+  httpClient
+    .get(`/api/v1/account/${address}`)
+    .then((res) => {
+      console.log(`BNB: ${parseFloat(res.data.balances.find((token) => token.symbol === 'BNB').free)}`)
+      console.log(`${FOREIGN_ASSET}: ${parseFloat(res.data.balances.find((token) => token.symbol === FOREIGN_ASSET).free)}`)
+    })
+    .catch(console.log)
+}
+
+main()
diff --git a/src/test-services/binanceSend/testBinanceSend.js b/src/test-services/binanceSend/testBinanceSend.js
index 46678d7..f0aede3 100644
--- a/src/test-services/binanceSend/testBinanceSend.js
+++ b/src/test-services/binanceSend/testBinanceSend.js
@@ -6,7 +6,7 @@ const PRIVATE_KEY = process.env.PRIVATE_KEY || FOREIGN_PRIVATE_KEY
 
 const client = new Bnc(FOREIGN_URL)
 
-async function main () {
+async function main() {
   client.chooseNetwork('testnet')
   await client.setPrivateKey(PRIVATE_KEY)
 
@@ -43,10 +43,11 @@ async function main () {
     receipt = await client.transfer(from, to, tokens, FOREIGN_ASSET, 'exchange')
   }
 
-  if (receipt.status === 200)
+  if (receipt.status === 200) {
     console.log(receipt.result[0].hash)
-  else
+  } else {
     console.log(receipt)
+  }
 }
 
 main()
diff --git a/src/test-services/ethereumBalance/testGetEthereumBalance.js b/src/test-services/ethereumBalance/testGetEthereumBalance.js
index 3d0e9ea..8b9ac8a 100644
--- a/src/test-services/ethereumBalance/testGetEthereumBalance.js
+++ b/src/test-services/ethereumBalance/testGetEthereumBalance.js
@@ -8,11 +8,18 @@ const abiToken = require('./IERC20').abi
 const web3 = new Web3(HOME_RPC_URL, null, { transactionConfirmationBlocks: 1 })
 const token = new web3.eth.Contract(abiToken, HOME_TOKEN_ADDRESS)
 
-const address = process.argv[2]
+function main() {
+  const address = process.argv[2]
 
-web3.eth.getBalance(address).then(x => console.log(`${x.toString()} wei`))
+  web3.eth.getBalance(address)
+    .then((balance) => console.log(`${balance.toString()} wei`))
 
-token.methods.balanceOf(address).call()
-  .then(x => parseFloat(new BN(x).dividedBy(10 ** 18).toFixed(8, 3)))
-  .then(x => console.log(`${x.toString()} tokens`))
-  .catch(() => console.log('0 tokens'))
+  token.methods.balanceOf(address)
+    .call()
+    .then((balance) => parseFloat(new BN(balance).dividedBy(10 ** 18)
+      .toFixed(8, 3)))
+    .then((balance) => console.log(`${balance.toString()} tokens`))
+    .catch(() => console.log('0 tokens'))
+}
+
+main()
diff --git a/src/test-services/ethereumSend/testEthereumSend.js b/src/test-services/ethereumSend/testEthereumSend.js
index 345658e..03ee123 100644
--- a/src/test-services/ethereumSend/testEthereumSend.js
+++ b/src/test-services/ethereumSend/testEthereumSend.js
@@ -1,7 +1,9 @@
 const Web3 = require('web3')
 const BN = require('bignumber.js')
 
-const { HOME_RPC_URL, HOME_BRIDGE_ADDRESS, HOME_PRIVATE_KEY, HOME_TOKEN_ADDRESS } = process.env
+const {
+  HOME_RPC_URL, HOME_BRIDGE_ADDRESS, HOME_PRIVATE_KEY, HOME_TOKEN_ADDRESS
+} = process.env
 
 const abiToken = require('./IERC20').abi
 const abiBridge = require('./Bridge').abi
@@ -14,21 +16,22 @@ const bridge = new web3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
 
 const sender = web3.eth.accounts.privateKeyToAccount(`0x${PRIVATE_KEY}`).address
 
-async function main () {
+async function main() {
   const HOME_CHAIN_ID = await web3.eth.net.getId()
-  const blockGasLimit = (await web3.eth.getBlock("latest", false)).gasLimit
+  const blockGasLimit = (await web3.eth.getBlock('latest', false)).gasLimit
 
   const to = process.argv[2]
 
-  const amount = parseInt(process.argv[3])
+  const amount = parseInt(process.argv[3], 10)
   let coins = process.argv[4]
 
   const txCount = await web3.eth.getTransactionCount(sender)
 
-  if (to === "bridge" && amount !== 0) {
+  if (to === 'bridge' && amount !== 0) {
     console.log(`Transfer from ${sender} to ${HOME_BRIDGE_ADDRESS}, ${amount} tokens`)
 
-    const queryApprove = token.methods.approve(HOME_BRIDGE_ADDRESS, '0x'+(new BN(amount).multipliedBy(10 ** 18).toString(16)))
+    const queryApprove = token.methods.approve(HOME_BRIDGE_ADDRESS, `0x${new BN(amount).multipliedBy(10 ** 18)
+      .toString(16)}`)
     const txApprove = {
       data: queryApprove.encodeABI(),
       from: sender,
@@ -42,9 +45,10 @@ async function main () {
     const signedTxApprove = await web3.eth.accounts.signTransaction(txApprove, PRIVATE_KEY)
 
     const receiptApprove = await web3.eth.sendSignedTransaction(signedTxApprove.rawTransaction)
-    console.log('txHash approve: ' + receiptApprove.transactionHash)
+    console.log(`txHash approve: ${receiptApprove.transactionHash}`)
 
-    const queryExchange = bridge.methods.exchange('0x'+(new BN(amount).multipliedBy(10 ** 18).toString(16)))
+    const queryExchange = bridge.methods.exchange(`0x${new BN(amount).multipliedBy(10 ** 18)
+      .toString(16)}`)
     const txExchange = {
       data: queryExchange.encodeABI(),
       from: sender,
@@ -58,11 +62,12 @@ async function main () {
     const signedTxExchange = await web3.eth.accounts.signTransaction(txExchange, PRIVATE_KEY)
 
     const receiptExchange = await web3.eth.sendSignedTransaction(signedTxExchange.rawTransaction)
-    console.log('txHash exchange: ' + receiptExchange.transactionHash)
+    console.log(`txHash exchange: ${receiptExchange.transactionHash}`)
   } else if (amount !== 0) {
     console.log(`Transfer from ${sender} to ${to}, ${amount} tokens`)
 
-    const query = token.methods.transfer(to, '0x'+(new BN(amount).multipliedBy(10 ** 18).toString(16)))
+    const query = token.methods.transfer(to, `0x${new BN(amount).multipliedBy(10 ** 18)
+      .toString(16)}`)
     const tx = {
       data: query.encodeABI(),
       from: sender,
@@ -75,7 +80,7 @@ async function main () {
     }) * 1.5), blockGasLimit)
     const signedTx = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY)
     const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
-    console.log('txHash transfer: ' + receipt.transactionHash)
+    console.log(`txHash transfer: ${receipt.transactionHash}`)
   }
 
   if (coins) {
@@ -85,7 +90,7 @@ async function main () {
     const tx = {
       data: '0x',
       from: sender,
-      to: to,
+      to,
       nonce: await web3.eth.getTransactionCount(sender),
       chainId: HOME_CHAIN_ID,
       value: web3.utils.toWei(new BN(coins).toString(), 'ether'),
@@ -94,9 +99,8 @@ async function main () {
     const signedTx = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY)
 
     const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
-    console.log('txHash: ' + receipt.transactionHash)
+    console.log(`txHash: ${receipt.transactionHash}`)
   }
-
 }
 
 main()
diff --git a/src/test-services/getAddresses/testGetAddresses.js b/src/test-services/getAddresses/testGetAddresses.js
index e51c3c6..0c7c01a 100644
--- a/src/test-services/getAddresses/testGetAddresses.js
+++ b/src/test-services/getAddresses/testGetAddresses.js
@@ -2,24 +2,28 @@ const { utils } = require('ethers')
 const bech32 = require('bech32')
 const crypto = require('crypto')
 
-const privateKey = process.argv[2].startsWith('0x') ? process.argv[2] : '0x' + process.argv[2]
+function sha256(bytes) {
+  return crypto.createHash('sha256').update(bytes).digest('hex')
+}
 
-const ethAddress = utils.computeAddress(privateKey)
-const publicKey = utils.computePublicKey(privateKey, true)
+function ripemd160(bytes) {
+  return crypto.createHash('ripemd160').update(bytes).digest('hex')
+}
 
-console.log(`Eth address: ${ethAddress}\nBnc address: ${publicKeyToAddress(publicKey)}`)
-
-function publicKeyToAddress (publicKey) {
+function publicKeyToAddress(publicKey) {
   const sha256Hash = sha256(Buffer.from(publicKey.substr(2), 'hex'))
   const hash = ripemd160(Buffer.from(sha256Hash, 'hex'))
   const words = bech32.toWords(Buffer.from(hash, 'hex'))
   return bech32.encode('tbnb', words)
 }
 
-function sha256 (bytes) {
-  return crypto.createHash('sha256').update(bytes).digest('hex')
+function main() {
+  const privateKey = process.argv[2].startsWith('0x') ? process.argv[2] : `0x${process.argv[2]}`
+
+  const ethAddress = utils.computeAddress(privateKey)
+  const publicKey = utils.computePublicKey(privateKey, true)
+
+  console.log(`Eth address: ${ethAddress}\nBnc address: ${publicKeyToAddress(publicKey)}`)
 }
 
-function ripemd160 (bytes) {
-  return crypto.createHash('ripemd160').update(bytes).digest('hex')
-}
+main()
diff --git a/src/test-services/sidePrefund/testEthereumSend.js b/src/test-services/sidePrefund/testEthereumSend.js
index 731af3e..9289e30 100644
--- a/src/test-services/sidePrefund/testEthereumSend.js
+++ b/src/test-services/sidePrefund/testEthereumSend.js
@@ -7,7 +7,7 @@ const web3 = new Web3(SIDE_RPC_URL, null, { transactionConfirmationBlocks: 1 })
 
 const sender = web3.eth.accounts.privateKeyToAccount(`0x${SIDE_PRIVATE_KEY}`).address
 
-async function main () {
+async function main() {
   const SIDE_CHAIN_ID = await web3.eth.net.getId()
 
   const to = process.argv[2]
@@ -15,20 +15,19 @@ async function main () {
 
   console.log(`Transfer from ${sender} to ${to}, ${amount} eth`)
 
-  const tx_coins = {
+  const txCoins = {
     data: '0x',
     from: sender,
-    to: to,
+    to,
     nonce: await web3.eth.getTransactionCount(sender),
     chainId: SIDE_CHAIN_ID,
     value: web3.utils.toWei(new BN(amount).toString(), 'ether'),
     gas: 21000
   }
-  const signedTx = await web3.eth.accounts.signTransaction(tx_coins, SIDE_PRIVATE_KEY)
+  const signedTx = await web3.eth.accounts.signTransaction(txCoins, SIDE_PRIVATE_KEY)
 
   const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
-  console.log('txHash: ' + receipt.transactionHash)
-
+  console.log(`txHash: ${receipt.transactionHash}`)
 }
 
 main()
diff --git a/tests/package.json b/tests/package.json
index de759d4..ffc0554 100644
--- a/tests/package.json
+++ b/tests/package.json
@@ -6,5 +6,8 @@
     "axios": "0.19.0",
     "@binance-chain/javascript-sdk": "2.16.1",
     "bignumber.js": "9.0.0"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index 8bfa320..6c1068c 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -5,15 +5,16 @@ const { getBalance } = require('./utils/bncController')
 
 const { controller1, controller3 } = require('./utils/proxyController')
 
-module.exports = newValidator => {
+module.exports = (newValidator) => {
   describe('add validator', function () {
     let info
     let initialInfo
     let nextValidators
 
     before(async function () {
-      initialInfo = info = await controller1.getInfo()
-      nextValidators = [ ...initialInfo.validators, newValidator ]
+      initialInfo = await controller1.getInfo()
+      info = initialInfo
+      nextValidators = [...initialInfo.validators, newValidator]
     })
 
     it('should start voting process', async function () {
@@ -23,7 +24,7 @@ module.exports = newValidator => {
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller3.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
       assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
       assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
@@ -46,7 +47,10 @@ module.exports = newValidator => {
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
 
       await controller3.voteAddValidator(newValidator)
-      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.nextValidators.length === nextValidators.length
+      )
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
 
@@ -67,7 +71,7 @@ module.exports = newValidator => {
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
 
       await controller3.voteStartKeygen()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'keygen')
 
       await controller3.voteStartKeygen()
       await delay(5000)
@@ -81,12 +85,15 @@ module.exports = newValidator => {
 
     it('should finish keygen process and start funds transfer', async function () {
       this.timeout(120000)
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'funds_transfer')
     })
 
     it('should transfer all funds to new account and start new epoch', async function () {
       this.timeout(300000)
-      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.epoch === initialInfo.epoch + 1
+      )
       assert.deepStrictEqual(info.validators, nextValidators, 'Incorrect set of validators in new epoch')
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 1587a87..3559435 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -2,7 +2,7 @@ const { delay } = require('./utils/wait')
 
 const { controller1 } = require('./utils/proxyController')
 
-module.exports = usersFunc => {
+module.exports = (usersFunc) => {
   describe('exchange of tokens in bnc => eth direction', function () {
     let users
     let info
@@ -11,21 +11,21 @@ module.exports = usersFunc => {
     before(async function () {
       users = usersFunc()
       info = await controller1.getInfo()
-      ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
+      ethBalances = await Promise.all(users.map((user) => user.getEthBalance()))
 
       await Promise.all(users.map((user, i) => user.exchangeBnc(info.foreignBridgeAddress, 3 + i)))
     })
 
-    it('should make coorect exchange transactions on eth side', async function () {
-      for (let i = 0; i < 3; i++) {
-        do {
+    it('should make correct exchange transactions on eth side', async function () {
+      for (let i = 0; i < 3; i += 1) {
+        while (true) {
           const user = users[i]
           const newEthBalance = await user.getEthBalance()
           if (newEthBalance === ethBalances[i] + 3 + i) {
             break
           }
           await delay(500)
-        } while (true)
+        }
       }
     })
   })
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index eb65ec7..74a6e68 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -5,13 +5,14 @@ const { getBalance } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
-module.exports = newThreshold => {
+module.exports = (newThreshold) => {
   describe('change threshold', function () {
     let info
     let initialInfo
 
     before(async function () {
-      initialInfo = info = await controller1.getInfo()
+      initialInfo = await controller1.getInfo()
+      info = initialInfo
     })
 
     it('should start voting process', async function () {
@@ -21,7 +22,7 @@ module.exports = newThreshold => {
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller2.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
       assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
       assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
@@ -46,7 +47,10 @@ module.exports = newThreshold => {
       assert.deepStrictEqual(info.nextThreshold, initialInfo.threshold, 'Next threshold is not set correctly')
 
       await controller2.voteChangeThreshold(newThreshold)
-      info = await waitPromise(controller1.getInfo, info => info.nextThreshold === newThreshold)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.nextThreshold === newThreshold
+      )
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
       assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
@@ -70,7 +74,7 @@ module.exports = newThreshold => {
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
 
       await controller2.voteStartKeygen()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'keygen')
 
       await controller3.voteStartKeygen()
       await delay(5000)
@@ -86,12 +90,15 @@ module.exports = newThreshold => {
 
     it('should finish keygen process and start funds transfer', async function () {
       this.timeout(120000)
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'funds_transfer')
     })
 
     it('should transfer all funds to new account and start new epoch', async function () {
       this.timeout(300000)
-      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.epoch === initialInfo.epoch + 1
+      )
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Incorrect set of validators in new epoch')
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 461b92f..4e8afd0 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -1,12 +1,12 @@
 const assert = require('assert')
 const { getSequence } = require('./utils/bncController')
-const { waitPromise, delay } = require('./utils/wait')
+const { waitPromise, delay, seqMap } = require('./utils/wait')
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
-module.exports = usersFunc => {
+module.exports = (usersFunc) => {
   describe('exchange of tokens in eth => bnc direction', function () {
     let info
     let users
@@ -17,8 +17,8 @@ module.exports = usersFunc => {
     before(async function () {
       users = usersFunc()
       info = await controller1.getInfo()
-      ethBalances = await Promise.all(users.map(user => user.getEthBalance()))
-      bncBalances = await users.seqMap(user => user.getBncBalance())
+      ethBalances = await Promise.all(users.map((user) => user.getEthBalance()))
+      bncBalances = await seqMap(users, (user) => user.getBncBalance())
 
       bncBridgeSequence = await getSequence(info.foreignBridgeAddress)
       await Promise.all(users.map((user, i) => user.approveEth(HOME_BRIDGE_ADDRESS, 5 + i)))
@@ -26,21 +26,24 @@ module.exports = usersFunc => {
 
     it('should accept exchange requests', async function () {
       await Promise.all(users.map((user, i) => user.exchangeEth(5 + i)))
-      const newEthBalances = await Promise.all(users.map(user => user.getEthBalance()))
-      for (let i = 0; i < 3; i++) {
+      const newEthBalances = await Promise.all(users.map((user) => user.getEthBalance()))
+      for (let i = 0; i < 3; i += 1) {
         assert.strictEqual(newEthBalances[i], ethBalances[i] - 5 - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
       }
     })
 
     it('should make exchange transaction on bnc side', async function () {
       this.timeout(300000)
-      await waitPromise(() => getSequence(info.foreignBridgeAddress), sequence => sequence === bncBridgeSequence + 1)
+      await waitPromise(
+        () => getSequence(info.foreignBridgeAddress),
+        (sequence) => sequence === bncBridgeSequence + 1
+      )
     })
 
     it('should make correct exchange transaction', async function () {
       await delay(10000)
-      const newBncBalances = await Promise.all(users.map(user => user.getBncBalance()))
-      for (let i = 0; i < 3; i++) {
+      const newBncBalances = await Promise.all(users.map((user) => user.getBncBalance()))
+      for (let i = 0; i < 3; i += 1) {
         assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
       }
     })
diff --git a/tests/test/index.js b/tests/test/index.js
index d304050..1293eb8 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -1,5 +1,5 @@
 const createUser = require('./utils/user')
-const { waitPromise } = require('./utils/wait')
+const { waitPromise, seqMap } = require('./utils/wait')
 
 const testEthToBnc = require('./ethToBnc')
 const testBncToEth = require('./bncToEth')
@@ -18,7 +18,7 @@ describe('bridge tests', function () {
   let users
 
   before(async function () {
-    users = await usersConfig.seqMap(user => createUser(user.privateKey))
+    users = await seqMap(usersConfig, (user) => createUser(user.privateKey))
   })
 
   describe('generation of initial epoch keys', function () {
@@ -33,7 +33,7 @@ describe('bridge tests', function () {
 
     it('should generate keys', async function () {
       this.timeout(120000)
-      info = await waitPromise(controller1.getInfo, info => info.epoch === 1)
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.epoch === 1)
     })
 
     after(async function () {
diff --git a/tests/test/removeValidator.js b/tests/test/removeValidator.js
index c5377bb..b33b7e3 100644
--- a/tests/test/removeValidator.js
+++ b/tests/test/removeValidator.js
@@ -5,15 +5,16 @@ const { getBalance } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
-module.exports = oldValidator => {
+module.exports = (oldValidator) => {
   describe('remove validator', function () {
     let info
     let initialInfo
     let nextValidators
 
     before(async function () {
-      initialInfo = info = await controller1.getInfo()
-      nextValidators = initialInfo.validators.filter(validator => validator !== oldValidator)
+      initialInfo = await controller1.getInfo()
+      info = initialInfo
+      nextValidators = initialInfo.validators.filter((validator) => validator !== oldValidator)
     })
 
     it('should start voting process', async function () {
@@ -23,7 +24,7 @@ module.exports = oldValidator => {
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller2.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'voting')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
       assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
       assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
@@ -46,7 +47,10 @@ module.exports = oldValidator => {
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
 
       await controller2.voteRemoveValidator(oldValidator)
-      info = await waitPromise(controller1.getInfo, info => info.nextValidators.length === nextValidators.length)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.nextValidators.length === nextValidators.length
+      )
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
 
@@ -67,7 +71,7 @@ module.exports = oldValidator => {
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
 
       await controller2.voteStartKeygen()
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'keygen')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'keygen')
 
       await controller3.voteStartKeygen()
       await delay(5000)
@@ -81,12 +85,15 @@ module.exports = oldValidator => {
 
     it('should finish keygen process and start funds transfer', async function () {
       this.timeout(120000)
-      info = await waitPromise(controller1.getInfo, info => info.bridgeStatus === 'funds_transfer')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'funds_transfer')
     })
 
     it('should transfer all funds to new account and start new epoch', async function () {
       this.timeout(300000)
-      info = await waitPromise(controller1.getInfo, info => info.epoch === initialInfo.epoch + 1)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => newInfo.epoch === initialInfo.epoch + 1
+      )
       assert.deepStrictEqual(info.validators, nextValidators, 'Incorrect set of validators in new epoch')
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
diff --git a/tests/test/utils/bncClient.js b/tests/test/utils/bncClient.js
index 4396b53..cd461fb 100644
--- a/tests/test/utils/bncClient.js
+++ b/tests/test/utils/bncClient.js
@@ -4,7 +4,7 @@ const { delay } = require('./wait')
 
 const { FOREIGN_URL, FOREIGN_ASSET } = process.env
 
-module.exports = async function main (privateKey) {
+module.exports = async function main(privateKey) {
   const client = new Bnc(FOREIGN_URL)
   client.chooseNetwork('testnet')
 
@@ -16,7 +16,7 @@ module.exports = async function main (privateKey) {
   await delay(1000)
 
   return {
-    transfer: async function (to, tokens, bnbs) {
+    async transfer(to, tokens, bnbs) {
       const outputs = [{
         to,
         coins: []
@@ -35,7 +35,7 @@ module.exports = async function main (privateKey) {
       }
       await client.multiSend(from, outputs, 'funding')
     },
-    exchange: async function (to, value) {
+    async exchange(to, value) {
       await client.transfer(from, to, value.toString(), FOREIGN_ASSET, 'exchange')
     }
   }
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index 82fe567..cd4a145 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -10,12 +10,12 @@ const bnc = axios.create({
 })
 
 module.exports = {
-  getBalance: async function (address) {
+  async getBalance(address) {
     const response = await retry(5, () => bnc.get(`/api/v1/account/${address}`))
-    const tokens = response.data.balances.find(x => x.symbol === FOREIGN_ASSET)
+    const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
     return response && tokens ? parseFloat(tokens.free) : 0
   },
-  getSequence: async function (address) {
+  async getSequence(address) {
     const response = await retry(5, () => bnc.get(`/api/v1/account/${address}/sequence`))
     return response ? response.data.sequence : 0
   }
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
index b9492c4..6e3fc5c 100644
--- a/tests/test/utils/proxyController.js
+++ b/tests/test/utils/proxyController.js
@@ -1,6 +1,6 @@
 const axios = require('axios')
 
-function createController (validatorId) {
+function createController(validatorId) {
   const url = `http://validator${validatorId}_proxy_1:8002/`
 
   const proxy = axios.create({
@@ -9,22 +9,22 @@ function createController (validatorId) {
   })
 
   return {
-    getInfo: async function () {
+    async getInfo() {
       return (await proxy.get('/info')).data
     },
-    voteStartVoting: async function () {
+    async voteStartVoting() {
       return (await proxy.get('/vote/startVoting')).data
     },
-    voteStartKeygen: async function () {
+    async voteStartKeygen() {
       return (await proxy.get('/vote/startKeygen')).data
     },
-    voteAddValidator: async function (validatorAddress) {
+    async voteAddValidator(validatorAddress) {
       return (await proxy.get(`/vote/addValidator/${validatorAddress}`)).data
     },
-    voteRemoveValidator: async function (validatorAddress) {
+    async voteRemoveValidator(validatorAddress) {
       return (await proxy.get(`/vote/removeValidator/${validatorAddress}`)).data
     },
-    voteChangeThreshold: async function (threshold) {
+    async voteChangeThreshold(threshold) {
       return (await proxy.get(`/vote/changeThreshold/${threshold}`)).data
     }
   }
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
index 8294581..3562bbe 100644
--- a/tests/test/utils/user.js
+++ b/tests/test/utils/user.js
@@ -11,7 +11,7 @@ const txOptions = {
   gasLimit: 200000
 }
 
-module.exports = async function (privateKey) {
+async function createUser(privateKey) {
   const wallet = new ethers.Wallet(privateKey, provider)
   const ethAddress = wallet.address
   const bncAddress = getAddressFromPrivateKey(privateKey)
@@ -23,32 +23,34 @@ module.exports = async function (privateKey) {
   return {
     ethAddress,
     bncAddress,
-    getEthBalance: async function () {
+    async getEthBalance() {
       const balance = await token.balanceOf(ethAddress)
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
     },
-    transferEth: async function (to, value) {
-      const tx = await token.transfer(to, '0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+    async transferEth(to, value) {
+      const tx = await token.transfer(to, `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
       await tx.wait()
     },
-    approveEth: async function (to, value) {
-      const tx = await token.approve(to, '0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+    async approveEth(to, value) {
+      const tx = await token.approve(to, `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
       await tx.wait()
     },
-    exchangeEth: async function (value) {
-      const tx = await bridge.exchange('0x' + (new BN(value).multipliedBy(10 ** 18).toString(16)), txOptions)
+    async exchangeEth(value) {
+      const tx = await bridge.exchange(`0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
       await tx.wait()
     },
-    getBncBalance: async function () {
+    async getBncBalance() {
       const balance = await getBalance(bncAddress)
       await delay(1000)
       return balance
     },
-    transferBnc: async function (bridgeAddress, tokens, bnbs) {
+    async transferBnc(bridgeAddress, tokens, bnbs) {
       return await bncClient.transfer(bridgeAddress, tokens, bnbs)
     },
-    exchangeBnc: async function (bridgeAddress, value) {
+    async exchangeBnc(bridgeAddress, value) {
       return await bncClient.exchange(bridgeAddress, value)
     }
   }
 }
+
+module.exports = createUser
diff --git a/tests/test/utils/wait.js b/tests/test/utils/wait.js
index ae0a145..7002df4 100644
--- a/tests/test/utils/wait.js
+++ b/tests/test/utils/wait.js
@@ -1,32 +1,34 @@
 async function delay(ms) {
-  await new Promise(res => setTimeout(res, ms))
+  await new Promise((res) => setTimeout(res, ms))
 }
 
-async function waitPromise (getPromise, checker) {
-  do {
+async function waitPromise(getPromise, checker) {
+  while (true) {
     const result = await getPromise()
-    if (checker(result))
+    if (checker(result)) {
       return result
+    }
     await delay(1000)
-  } while (true)
+  }
 }
 
-async function retry (n, getPromise) {
+async function retry(n, getPromise) {
   while (n) {
     try {
       return await getPromise()
     } catch (e) {
       await delay(3000)
-      n--
+      // eslint-disable-next-line no-param-reassign
+      n -= 1
     }
   }
   return null
 }
 
-Array.prototype.seqMap = async function (transition) {
+async function seqMap(arr, transition) {
   const results = []
-  for (let i = 0; i < this.length; i++) {
-    results[i] = await transition(this[i])
+  for (let i = 0; i < arr.length; i += 1) {
+    results[i] = await transition(arr[i])
   }
   return results
 }
@@ -34,5 +36,6 @@ Array.prototype.seqMap = async function (transition) {
 module.exports = {
   waitPromise,
   delay,
-  retry
+  retry,
+  seqMap
 }

From 5489ebaaf2662d1d568b511b5a4fd299fd96c952 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 3 Nov 2019 13:53:49 +0300
Subject: [PATCH 054/129] Handle no cache found situation

---
 .circleci/config.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index e14745e..0160b08 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -80,7 +80,7 @@ orbs:
         steps:
           - run:
               name: "Load tss image from archive"
-              command: docker load -i ./workspace/tss.tar.gz
+              command: docker load -i ./workspace/tss.tar.gz || true
       save_docker_logs:
         description: "Save docker logs"
         parameters:

From 6e65bbcb04ef9dd8958b1859c51f8854f949d362 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 3 Nov 2019 13:54:34 +0300
Subject: [PATCH 055/129] Refactored and linted components

---
 src/oracle/bncWatcher/Dockerfile    |  2 +-
 src/oracle/bncWatcher/bncWatcher.js | 62 +++++++++++++++--------------
 src/oracle/ethWatcher/Dockerfile    |  2 +-
 src/oracle/ethWatcher/ethWatcher.js | 20 ++++++----
 src/oracle/proxy/Dockerfile         |  2 +-
 src/oracle/proxy/index.js           | 30 ++++++--------
 src/oracle/proxy/sendTx.js          | 16 +++-----
 src/oracle/shared/wait.js           | 24 +++++++++++
 src/oracle/tss-keygen/Dockerfile    |  2 +-
 src/oracle/tss-keygen/keygen.js     |  3 +-
 src/oracle/tss-sign/Dockerfile      |  2 +-
 src/oracle/tss-sign/signer.js       | 18 ++++-----
 tests/test/utils/wait.js            |  4 +-
 13 files changed, 103 insertions(+), 84 deletions(-)
 create mode 100644 src/oracle/shared/wait.js

diff --git a/src/oracle/bncWatcher/Dockerfile b/src/oracle/bncWatcher/Dockerfile
index be3f7c2..104556b 100644
--- a/src/oracle/bncWatcher/Dockerfile
+++ b/src/oracle/bncWatcher/Dockerfile
@@ -9,6 +9,6 @@ COPY ./bncWatcher/package.json /watcher/
 
 RUN npm install
 
-COPY ./bncWatcher/bncWatcher.js ./shared/db.js ./shared/logger.js ./shared/crypto.js /watcher/
+COPY ./bncWatcher/bncWatcher.js ./shared/db.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /watcher/
 
 ENTRYPOINT ["node", "bncWatcher.js"]
diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 91df7a1..966d159 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -6,6 +6,7 @@ const { computeAddress } = require('ethers').utils
 const logger = require('./logger')
 const redis = require('./db')
 const { publicKeyToAddress } = require('./crypto')
+const { delay, retry } = require('./wait')
 
 const { FOREIGN_URL, PROXY_URL, FOREIGN_ASSET } = process.env
 
@@ -27,22 +28,21 @@ function getLastForeignAddress() {
   return publicKeyToAddress(publicKey)
 }
 
-function getTx(hash) {
-  return foreignHttpClient
-    .get(`/api/v1/tx/${hash}`, {
+async function getTx(hash) {
+  const response = await retry(() => foreignHttpClient.get(
+    `/api/v1/tx/${hash}`,
+    {
       params: {
         format: 'json'
       }
-    })
-    .then((res) => res.data.tx.value)
-    .catch(() => getTx(hash))
+    }
+  ))
+  return response.data.tx.value
 }
 
-function getBlockTime() {
-  return foreignHttpClient
-    .get('/api/v1/time')
-    .then((res) => Date.parse(res.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET)
-    .catch(() => getBlockTime())
+async function getBlockTime() {
+  const response = await retry(() => foreignHttpClient.get('/api/v1/time'))
+  return Date.parse(response.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET
 }
 
 async function fetchNewTransactions() {
@@ -62,16 +62,14 @@ async function fetchNewTransactions() {
     startTime,
     endTime
   }
-  try {
-    logger.trace('%o', params)
-    const transactions = (await foreignHttpClient
-      .get('/api/v1/transactions', { params })).data.tx
-    return {
-      transactions,
-      endTime
-    }
-  } catch (e) {
-    return await fetchNewTransactions()
+
+  logger.trace('%o', params)
+  const transactions = (await retry(() => foreignHttpClient
+    .get('/api/v1/transactions', { params }))).data.tx
+
+  return {
+    transactions,
+    endTime
   }
 }
 
@@ -82,11 +80,11 @@ async function initialize() {
   }
 }
 
-async function main() {
+async function loop() {
   const { transactions, endTime } = await fetchNewTransactions()
   if (!transactions || transactions.length === 0) {
     logger.debug('Found 0 new transactions')
-    await new Promise((r) => setTimeout(r, FOREIGN_FETCH_INTERVAL))
+    await delay(FOREIGN_FETCH_INTERVAL)
     return
   }
 
@@ -100,7 +98,8 @@ async function main() {
       await proxyHttpClient
         .post('/transfer', {
           to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
-          value: new BN(tx.value).multipliedBy(10 ** 18)
+          value: new BN(tx.value)
+            .multipliedBy(10 ** 18)
             .integerValue(),
           hash: `0x${tx.txHash}`
         })
@@ -109,9 +108,12 @@ async function main() {
   await redis.set('foreignTime', endTime)
 }
 
-initialize()
-  .then(async () => {
-    while (true) {
-      await main()
-    }
-  })
+async function main() {
+  await initialize()
+
+  while (true) {
+    await loop()
+  }
+}
+
+main()
diff --git a/src/oracle/ethWatcher/Dockerfile b/src/oracle/ethWatcher/Dockerfile
index 2eb0bfa..5b67a29 100644
--- a/src/oracle/ethWatcher/Dockerfile
+++ b/src/oracle/ethWatcher/Dockerfile
@@ -9,7 +9,7 @@ COPY ./ethWatcher/package.json /watcher/
 
 RUN npm install
 
-COPY ./ethWatcher/ethWatcher.js ./shared/db.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js /watcher/
+COPY ./ethWatcher/ethWatcher.js ./shared/db.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js ./shared/wait.js /watcher/
 COPY ./ethWatcher/Bridge.json /watcher/contracts_data/
 
 ENTRYPOINT ["node", "ethWatcher.js"]
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index b59602e..9d23626 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -7,6 +7,7 @@ const logger = require('./logger')
 const redis = require('./db')
 const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress } = require('./crypto')
+const { delay } = require('./wait')
 
 const abiBridge = require('./contracts_data/Bridge.json').abi
 
@@ -225,11 +226,11 @@ async function initialize() {
   await axios.get('http://signer:8001/start')
 }
 
-async function main() {
+async function loop() {
   logger.debug(`Watching events in block #${blockNumber}`)
   if (await homeWeb3.eth.getBlock(blockNumber) === null) {
     logger.debug('No block')
-    await new Promise((r) => setTimeout(r, 1000))
+    await delay(1000)
     return
   }
 
@@ -283,9 +284,12 @@ async function main() {
   await redis.save()
 }
 
-initialize()
-  .then(async () => {
-    while (true) {
-      await main()
-    }
-  }, (e) => logger.warn('Initialization failed %o', e))
+async function main() {
+  await initialize()
+
+  while (true) {
+    await loop()
+  }
+}
+
+main()
diff --git a/src/oracle/proxy/Dockerfile b/src/oracle/proxy/Dockerfile
index 0e226c0..431811d 100644
--- a/src/oracle/proxy/Dockerfile
+++ b/src/oracle/proxy/Dockerfile
@@ -6,7 +6,7 @@ COPY ./proxy/package.json /proxy/
 
 RUN npm install
 
-COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./shared/logger.js ./shared/crypto.js /proxy/
+COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /proxy/
 COPY ./proxy/Bridge.json ./proxy/IERC20.json ./proxy/SharedDB.json /proxy/contracts_data/
 
 ENTRYPOINT ["node", "index.js"]
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index ef7e76f..f1e6e29 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -259,37 +259,37 @@ async function sendVote(query, req, res, waitFlag = false) {
 async function voteStartVoting(req, res) {
   logger.info('Voting for starting new epoch voting process')
   const query = bridge.methods.startVoting()
-  sendVote(query, req, res, true)
+  await sendVote(query, req, res, true)
 }
 
 async function voteStartKeygen(req, res) {
   logger.info('Voting for starting new epoch keygen')
   const query = bridge.methods.voteStartKeygen()
-  sendVote(query, req, res)
+  await sendVote(query, req, res)
 }
 
 async function voteCancelKeygen(req, res) {
   logger.info('Voting for cancelling new epoch keygen')
   const query = bridge.methods.voteCancelKeygen()
-  sendVote(query, req, res)
+  await sendVote(query, req, res)
 }
 
 async function voteAddValidator(req, res) {
   logger.info('Voting for adding new validator')
   const query = bridge.methods.voteAddValidator(req.params.validator)
-  sendVote(query, req, res)
+  await sendVote(query, req, res)
 }
 
 async function voteChangeThreshold(req, res) {
   logger.info('Voting for changing threshold')
   const query = bridge.methods.voteChangeThreshold(req.params.threshold)
-  sendVote(query, req, res)
+  await sendVote(query, req, res)
 }
 
 async function voteRemoveValidator(req, res) {
   logger.info('Voting for removing validator')
   const query = bridge.methods.voteRemoveValidator(req.params.validator)
-  sendVote(query, req, res, true)
+  await sendVote(query, req, res, true)
 }
 
 function decodeStatus(status) {
@@ -315,10 +315,6 @@ function boundX(x) {
   }
 }
 
-function toNumber(x) {
-  return x.toNumber()
-}
-
 async function transfer(req, res) {
   logger.info('Transfer start')
   const { hash, to, value } = req.body
@@ -357,28 +353,28 @@ async function info(req, res) {
         .then((value) => new BN(value).toString(16)),
       bridge.methods.epoch()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getRangeSize()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getNextRangeSize()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getStartBlock()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getNonce()
         .call()
         .then(boundX),
       bridge.methods.nextEpoch()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getThreshold()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getNextThreshold()
         .call()
-        .then(toNumber),
+        .then(boundX),
       bridge.methods.getValidators()
         .call(),
       bridge.methods.getNextValidators()
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index c18ed41..1add20a 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -4,22 +4,18 @@ const ethers = require('ethers')
 const BN = require('bignumber.js')
 
 const logger = require('./logger')
+const { delay, retry } = require('./wait')
 
 const { GAS_LIMIT_FACTOR, MAX_GAS_LIMIT } = process.env
 
-function sendRpcRequest(url, method, params) {
-  return axios.post(url, {
+async function sendRpcRequest(url, method, params) {
+  const response = await retry(() => axios.post(url, {
     jsonrpc: '2.0',
     method,
     params,
     id: 1
-  })
-    .then((res) => res.data)
-    .catch(async () => {
-      logger.warn(`Request to ${url}, method ${method} failed, retrying`)
-      await new Promise((res) => setTimeout(res, 1000))
-      return sendRpcRequest(url, method, params)
-    })
+  }))
+  return response.data
 }
 
 async function createSender(url, privateKey) {
@@ -85,7 +81,7 @@ async function waitForReceipt(url, txHash) {
     const { result, error } = await sendRpcRequest(url, 'eth_getTransactionReceipt', [txHash])
 
     if (result === null || error) {
-      await new Promise((res) => setTimeout(res, 1000))
+      await delay(1000)
     } else {
       return result
     }
diff --git a/src/oracle/shared/wait.js b/src/oracle/shared/wait.js
new file mode 100644
index 0000000..3e93e91
--- /dev/null
+++ b/src/oracle/shared/wait.js
@@ -0,0 +1,24 @@
+const logger = require('./logger')
+
+async function delay(ms) {
+  await new Promise((res) => setTimeout(res, ms))
+}
+
+async function retry(n, getPromise = -1, sleep = 3000) {
+  while (n) {
+    try {
+      return await getPromise()
+    } catch (e) {
+      logger.debug(`Promise failed, retrying, ${n - 1} attempts left`)
+      await delay(sleep)
+      // eslint-disable-next-line no-param-reassign
+      n -= 1
+    }
+  }
+  return null
+}
+
+module.exports = {
+  delay,
+  retry
+}
diff --git a/src/oracle/tss-keygen/Dockerfile b/src/oracle/tss-keygen/Dockerfile
index 72ed8ca..fd34ce2 100644
--- a/src/oracle/tss-keygen/Dockerfile
+++ b/src/oracle/tss-keygen/Dockerfile
@@ -9,7 +9,7 @@ COPY ./tss-keygen/package.json /tss/
 
 RUN npm install
 
-COPY ./tss-keygen/keygen-entrypoint.sh ./tss-keygen/keygen.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js /tss/
+COPY ./tss-keygen/keygen-entrypoint.sh ./tss-keygen/keygen.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js ./shared/wait.js /tss/
 
 COPY --from=tss /tss/target/release/gg18_keygen_client /tss/
 
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 77f9a7e..0f3a067 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -5,6 +5,7 @@ const express = require('express')
 const logger = require('./logger')
 const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress } = require('./crypto')
+const { delay } = require('./wait')
 
 const { RABBITMQ_URL, PROXY_URL } = process.env
 
@@ -25,7 +26,7 @@ async function main() {
   const cancelKeygenQueue = await assertQueue(channel, 'cancelKeygenQueue')
 
   while (!ready) {
-    await new Promise((res) => setTimeout(res, 1000))
+    await delay(1000)
   }
 
   channel.prefetch(1)
diff --git a/src/oracle/tss-sign/Dockerfile b/src/oracle/tss-sign/Dockerfile
index 4d53236..0b14ac5 100644
--- a/src/oracle/tss-sign/Dockerfile
+++ b/src/oracle/tss-sign/Dockerfile
@@ -10,7 +10,7 @@ COPY ./tss-sign/package.json /tss/
 
 RUN npm install --no-optional
 
-COPY ./tss-sign/sign-entrypoint.sh ./tss-sign/signer.js ./tss-sign/tx.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js /tss/
+COPY ./tss-sign/sign-entrypoint.sh ./tss-sign/signer.js ./tss-sign/tx.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js ./shared/wait.js /tss/
 
 COPY --from=tss /tss/target/release/gg18_sign_client /tss/
 
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 2ffe5cb..1e49e05 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -7,6 +7,7 @@ const express = require('express')
 const logger = require('./logger')
 const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress, sha256 } = require('./crypto')
+const { delay, retry } = require('./wait')
 
 const Transaction = require('./tx')
 
@@ -70,15 +71,10 @@ function getAccountFromFile(file) {
   }
 }
 
-function getAccount(address) {
+async function getAccount(address) {
   logger.info(`Getting account ${address} data`)
-  return httpClient
-    .get(`/api/v1/account/${address}`)
-    .then((res) => res.data)
-    .catch(() => {
-      logger.debug('Retrying')
-      return getAccount(address)
-    })
+  const response = await retry(() => httpClient.get(`/api/v1/account/${address}`))
+  return response.data
 }
 
 async function waitForAccountNonce(address, nonce) {
@@ -152,7 +148,7 @@ async function main() {
   const signQueue = await assertQueue(channel, 'signQueue')
 
   while (!ready) {
-    await new Promise((res) => setTimeout(res, 1000))
+    await delay(1000)
   }
 
   channel.prefetch(1)
@@ -216,7 +212,7 @@ async function main() {
           attempt = nextAttempt || attempt + 1
           logger.warn(`Sign failed, starting next attempt ${attempt}`)
           nextAttempt = null
-          await new Promise((resolve) => setTimeout(resolve, 1000))
+          await delay(1000)
         }
       }
     } else if (account.sequence <= nonce) {
@@ -250,7 +246,7 @@ async function main() {
         attempt = nextAttempt || attempt + 1
         logger.warn(`Sign failed, starting next attempt ${attempt}`)
         nextAttempt = null
-        await new Promise((resolve) => setTimeout(resolve, 1000))
+        await delay(1000)
       }
     } else {
       logger.debug('Tx has been already sent')
diff --git a/tests/test/utils/wait.js b/tests/test/utils/wait.js
index 7002df4..0a5d60d 100644
--- a/tests/test/utils/wait.js
+++ b/tests/test/utils/wait.js
@@ -12,12 +12,12 @@ async function waitPromise(getPromise, checker) {
   }
 }
 
-async function retry(n, getPromise) {
+async function retry(n, getPromise, sleep = 3000) {
   while (n) {
     try {
       return await getPromise()
     } catch (e) {
-      await delay(3000)
+      await delay(sleep)
       // eslint-disable-next-line no-param-reassign
       n -= 1
     }

From e21d06ce3b806bd931c9dcad5601327f51b269d9 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 3 Nov 2019 16:10:06 +0300
Subject: [PATCH 056/129] Fixed typos

---
 src/oracle/proxy/encode.js        | 4 ++--
 src/oracle/proxy/sendTx.js        | 6 ++++--
 src/oracle/shared/wait.js         | 2 +-
 tests/test/utils/bncController.js | 4 ++--
 tests/test/utils/wait.js          | 2 +-
 5 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/oracle/proxy/encode.js b/src/oracle/proxy/encode.js
index 4a18410..13361f3 100644
--- a/src/oracle/proxy/encode.js
+++ b/src/oracle/proxy/encode.js
@@ -13,7 +13,7 @@ const keygenEncoders = [
     yield makeBuffer(value.e.n, 256, 10)
     yield makeBuffer(value.com)
     for (let i = 0; i < value.correct_key_proof.sigma_vec.length; i += 1) {
-      yield makeBuffer(value.correct_key_proof.sigma_vecp[i], 256, 10)
+      yield makeBuffer(value.correct_key_proof.sigma_vec[i], 256, 10)
     }
   },
   // round 2
@@ -33,7 +33,7 @@ const keygenEncoders = [
     yield Buffer.from([value.parameters.threshold]) // 1 byte
     yield Buffer.from([value.parameters.share_count]) // 1 byte
     for (let i = 0; i < value.commitments.length; i += 1) {
-      const x = value.correct_key_proof.sigma_vec[i]
+      const x = value.commitments[i]
       yield makeBuffer(x.x)
       yield makeBuffer(x.y)
     }
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index 1add20a..9e9b0cd 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -9,12 +9,14 @@ const { delay, retry } = require('./wait')
 const { GAS_LIMIT_FACTOR, MAX_GAS_LIMIT } = process.env
 
 async function sendRpcRequest(url, method, params) {
+  logger.trace(`Request to ${url}, method ${method}, params %o`, params)
   const response = await retry(() => axios.post(url, {
     jsonrpc: '2.0',
     method,
     params,
     id: 1
   }))
+  logger.trace('Response %o', response.data)
   return response.data
 }
 
@@ -53,9 +55,9 @@ async function createSender(url, privateKey) {
       newTx.gasLimit = `0x${new BN(gasLimit).toString(16)}`
       logger.trace(`Estimated gas to ${gasLimit}`)
 
-      const hash = web3.utils.sha3(ethers.utils.serializeTransaction(tx))
+      const hash = web3.utils.sha3(ethers.utils.serializeTransaction(newTx))
       const signature = signer.signDigest(hash)
-      const signedTx = ethers.utils.serializeTransaction(tx, signature)
+      const signedTx = ethers.utils.serializeTransaction(newTx, signature)
 
       const { result, error } = await sendRpcRequest(url, 'eth_sendRawTransaction', [signedTx])
       // handle nonce error
diff --git a/src/oracle/shared/wait.js b/src/oracle/shared/wait.js
index 3e93e91..f5c02c0 100644
--- a/src/oracle/shared/wait.js
+++ b/src/oracle/shared/wait.js
@@ -4,7 +4,7 @@ async function delay(ms) {
   await new Promise((res) => setTimeout(res, ms))
 }
 
-async function retry(n, getPromise = -1, sleep = 3000) {
+async function retry(getPromise, n = -1, sleep = 3000) {
   while (n) {
     try {
       return await getPromise()
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index cd4a145..5638620 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -11,12 +11,12 @@ const bnc = axios.create({
 
 module.exports = {
   async getBalance(address) {
-    const response = await retry(5, () => bnc.get(`/api/v1/account/${address}`))
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}`), 5)
     const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
     return response && tokens ? parseFloat(tokens.free) : 0
   },
   async getSequence(address) {
-    const response = await retry(5, () => bnc.get(`/api/v1/account/${address}/sequence`))
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}/sequence`), 5)
     return response ? response.data.sequence : 0
   }
 }
diff --git a/tests/test/utils/wait.js b/tests/test/utils/wait.js
index 0a5d60d..aef08fa 100644
--- a/tests/test/utils/wait.js
+++ b/tests/test/utils/wait.js
@@ -12,7 +12,7 @@ async function waitPromise(getPromise, checker) {
   }
 }
 
-async function retry(n, getPromise, sleep = 3000) {
+async function retry(getPromise, n = -1, sleep = 3000) {
   while (n) {
     try {
       return await getPromise()

From 25941a61e700360d9288e367a1cec73a6e861c53 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 3 Nov 2019 21:00:15 +0300
Subject: [PATCH 057/129] Refactored tests and oracle

---
 src/oracle/ethWatcher/ethWatcher.js |  7 +--
 src/oracle/proxy/index.js           | 92 ++++++++++-------------------
 tests/test/addValidator.js          |  6 +-
 tests/test/bncToEth.js              | 24 ++++----
 tests/test/changeThreshold.js       |  6 +-
 tests/test/ethToBnc.js              | 23 ++++----
 tests/test/index.js                 | 40 ++++++++++---
 tests/test/removeValidator.js       |  6 +-
 tests/test/utils/bncController.js   |  9 ++-
 tests/test/utils/user.js            | 70 ++++++++++++++++++----
 10 files changed, 166 insertions(+), 117 deletions(-)

diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 9d23626..23a83d6 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -196,8 +196,6 @@ async function initialize() {
   if (epochStart > saved) {
     logger.info(`Data in db is outdated, starting from epoch ${epoch}, block #${epochStart}`)
     blockNumber = epochStart
-    rangeSize = (await bridge.methods.getRangeSize()
-      .call()).toNumber()
     await redis.multi()
       .set('homeBlock', blockNumber - 1)
       .set(`foreignNonce${epoch}`, 0)
@@ -208,9 +206,10 @@ async function initialize() {
     blockNumber = saved
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`), 10) || 0
   }
+  rangeSize = (await bridge.methods.getRangeSize().call()).toNumber()
+  logger.debug(`Range size ${rangeSize}`)
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.methods.getValidators()
-    .call()).includes(validatorAddress)
+  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index f1e6e29..d520245 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -159,10 +159,8 @@ async function set(req, res) {
 
 async function signupKeygen(req, res) {
   logger.debug('SignupKeygen call')
-  const epoch = (await bridge.methods.nextEpoch()
-    .call()).toNumber()
-  const partyId = (await bridge.methods.getNextPartyId(validatorAddress)
-    .call()).toNumber()
+  const epoch = (await bridge.methods.nextEpoch().call()).toNumber()
+  const partyId = (await bridge.methods.getNextPartyId(validatorAddress).call()).toNumber()
 
   if (partyId === 0) {
     res.send(Err({ message: 'Not a validator' }))
@@ -193,10 +191,9 @@ async function signupSign(req, res) {
     return
   }
 
-  const validators = await bridge.methods.getValidators()
-    .call()
-  const id = (await sharedDb.methods.getSignupNumber(hash, validators, validatorAddress)
-    .call()).toNumber()
+  const validators = await bridge.methods.getValidators().call()
+  const id = (await sharedDb.methods.getSignupNumber(hash, validators, validatorAddress).call())
+    .toNumber()
 
   res.send(Ok({
     uuid: hash,
@@ -345,62 +342,37 @@ async function info(req, res) {
       x, y, epoch, rangeSize, nextRangeSize, epochStartBlock, foreignNonce, nextEpoch,
       threshold, nextThreshold, validators, nextValidators, status, homeBalance
     ] = await Promise.all([
-      bridge.methods.getX()
-        .call()
-        .then((value) => new BN(value).toString(16)),
-      bridge.methods.getY()
-        .call()
-        .then((value) => new BN(value).toString(16)),
-      bridge.methods.epoch()
-        .call()
-        .then(boundX),
-      bridge.methods.getRangeSize()
-        .call()
-        .then(boundX),
-      bridge.methods.getNextRangeSize()
-        .call()
-        .then(boundX),
-      bridge.methods.getStartBlock()
-        .call()
-        .then(boundX),
-      bridge.methods.getNonce()
-        .call()
-        .then(boundX),
-      bridge.methods.nextEpoch()
-        .call()
-        .then(boundX),
-      bridge.methods.getThreshold()
-        .call()
-        .then(boundX),
-      bridge.methods.getNextThreshold()
-        .call()
-        .then(boundX),
-      bridge.methods.getValidators()
-        .call(),
-      bridge.methods.getNextValidators()
-        .call(),
-      bridge.methods.status()
-        .call(),
-      token.methods.balanceOf(HOME_BRIDGE_ADDRESS)
-        .call()
-        .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18)
-          .toFixed(8, 3)))
+      bridge.methods.getX().call().then((value) => new BN(value).toString(16)),
+      bridge.methods.getY().call().then((value) => new BN(value).toString(16)),
+      bridge.methods.epoch().call().then(boundX),
+      bridge.methods.getRangeSize().call().then(boundX),
+      bridge.methods.getNextRangeSize().call().then(boundX),
+      bridge.methods.getStartBlock().call().then(boundX),
+      bridge.methods.getNonce().call().then(boundX),
+      bridge.methods.nextEpoch().call().then(boundX),
+      bridge.methods.getThreshold().call().then(boundX),
+      bridge.methods.getNextThreshold().call().then(boundX),
+      bridge.methods.getValidators().call(),
+      bridge.methods.getNextValidators().call(),
+      bridge.methods.status().call(),
+      token.methods.balanceOf(HOME_BRIDGE_ADDRESS).call()
+        .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18).toFixed(8, 3)))
     ])
     const [
       confirmationsForFundsTransfer, votesForVoting, votesForKeygen, votesForCancelKeygen
     ] = await Promise.all([
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [1, nextEpoch])))
-        .call()
-        .then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [2, nextEpoch])))
-        .call()
-        .then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [7, nextEpoch])))
-        .call()
-        .then(boundX),
-      bridge.methods.votesCount(homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [8, nextEpoch])))
-        .call()
-        .then(boundX)
+      bridge.methods.votesCount(
+        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [1, nextEpoch]))
+      ).call().then(boundX),
+      bridge.methods.votesCount(
+        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [2, nextEpoch]))
+      ).call().then(boundX),
+      bridge.methods.votesCount(
+        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [7, nextEpoch]))
+      ).call().then(boundX),
+      bridge.methods.votesCount(
+        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [8, nextEpoch]))
+      ).call().then(boundX)
     ])
     const foreignAddress = publicKeyToAddress({
       x,
diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index 6c1068c..cad94c5 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBalance } = require('./utils/bncController')
+const { getBepBalance } = require('./utils/bncController')
 
 const { controller1, controller3 } = require('./utils/proxyController')
 
@@ -98,8 +98,8 @@ module.exports = (newValidator) => {
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
       await delay(5000)
-      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
-      const newBalance = await getBalance(info.foreignBridgeAddress)
+      const prevBalance = await getBepBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBepBalance(info.foreignBridgeAddress)
       assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
       assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
     })
diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 3559435..143b3d0 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -1,31 +1,29 @@
-const { delay } = require('./utils/wait')
+const { waitPromise } = require('./utils/wait')
 
 const { controller1 } = require('./utils/proxyController')
 
-module.exports = (usersFunc) => {
+module.exports = (getUsers) => {
   describe('exchange of tokens in bnc => eth direction', function () {
     let users
     let info
     let ethBalances
 
     before(async function () {
-      users = usersFunc()
+      users = getUsers()
       info = await controller1.getInfo()
-      ethBalances = await Promise.all(users.map((user) => user.getEthBalance()))
+      ethBalances = await Promise.all(users.map((user) => user.getErcBalance()))
 
-      await Promise.all(users.map((user, i) => user.exchangeBnc(info.foreignBridgeAddress, 3 + i)))
+      await Promise.all(users.map((user, i) => user.exchangeBep(info.foreignBridgeAddress, 3 + i)))
     })
 
     it('should make correct exchange transactions on eth side', async function () {
       for (let i = 0; i < 3; i += 1) {
-        while (true) {
-          const user = users[i]
-          const newEthBalance = await user.getEthBalance()
-          if (newEthBalance === ethBalances[i] + 3 + i) {
-            break
-          }
-          await delay(500)
-        }
+        const user = users[i]
+        await waitPromise(
+          user.getErcBalance,
+          // eslint-disable-next-line no-loop-func
+          (newEthBalance) => newEthBalance === ethBalances[i] + 3 + i
+        )
       }
     })
   })
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index 74a6e68..754e7d5 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBalance } = require('./utils/bncController')
+const { getBepBalance } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
@@ -105,8 +105,8 @@ module.exports = (newThreshold) => {
       assert.deepStrictEqual(info.threshold, newThreshold, 'Threshold not set correctly')
       assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
       await delay(5000)
-      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
-      const newBalance = await getBalance(info.foreignBridgeAddress)
+      const prevBalance = await getBepBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBepBalance(info.foreignBridgeAddress)
       assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
       assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
     })
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 4e8afd0..4bd5e08 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -1,12 +1,13 @@
 const assert = require('assert')
-const { getSequence } = require('./utils/bncController')
+
+const { getBncSequence } = require('./utils/bncController')
 const { waitPromise, delay, seqMap } = require('./utils/wait')
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
-module.exports = (usersFunc) => {
+module.exports = (getUsers) => {
   describe('exchange of tokens in eth => bnc direction', function () {
     let info
     let users
@@ -15,18 +16,18 @@ module.exports = (usersFunc) => {
     let bncBridgeSequence
 
     before(async function () {
-      users = usersFunc()
+      users = getUsers()
       info = await controller1.getInfo()
-      ethBalances = await Promise.all(users.map((user) => user.getEthBalance()))
-      bncBalances = await seqMap(users, (user) => user.getBncBalance())
+      ethBalances = await Promise.all(users.map((user) => user.getErcBalance()))
+      bncBalances = await seqMap(users, (user) => user.getBepBalance())
 
-      bncBridgeSequence = await getSequence(info.foreignBridgeAddress)
-      await Promise.all(users.map((user, i) => user.approveEth(HOME_BRIDGE_ADDRESS, 5 + i)))
+      bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
+      await Promise.all(users.map((user, i) => user.approveErc(HOME_BRIDGE_ADDRESS, 5 + i)))
     })
 
     it('should accept exchange requests', async function () {
-      await Promise.all(users.map((user, i) => user.exchangeEth(5 + i)))
-      const newEthBalances = await Promise.all(users.map((user) => user.getEthBalance()))
+      await Promise.all(users.map((user, i) => user.exchangeErc(5 + i)))
+      const newEthBalances = await Promise.all(users.map((user) => user.getErcBalance()))
       for (let i = 0; i < 3; i += 1) {
         assert.strictEqual(newEthBalances[i], ethBalances[i] - 5 - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
       }
@@ -35,14 +36,14 @@ module.exports = (usersFunc) => {
     it('should make exchange transaction on bnc side', async function () {
       this.timeout(300000)
       await waitPromise(
-        () => getSequence(info.foreignBridgeAddress),
+        () => getBncSequence(info.foreignBridgeAddress),
         (sequence) => sequence === bncBridgeSequence + 1
       )
     })
 
     it('should make correct exchange transaction', async function () {
       await delay(10000)
-      const newBncBalances = await Promise.all(users.map((user) => user.getBncBalance()))
+      const newBncBalances = await Promise.all(users.map((user) => user.getBepBalance()))
       for (let i = 0; i < 3; i += 1) {
         assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
       }
diff --git a/tests/test/index.js b/tests/test/index.js
index 1293eb8..8d661c8 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -1,3 +1,5 @@
+const assert = require('assert')
+
 const createUser = require('./utils/user')
 const { waitPromise, seqMap } = require('./utils/wait')
 
@@ -10,7 +12,9 @@ const testChangeThreshold = require('./changeThreshold')
 const usersConfig = require('../config').users
 const validatorsConfig = require('../config').validators
 
-const { HOME_PRIVATE_KEY, FOREIGN_PRIVATE_KEY, HOME_BRIDGE_ADDRESS } = process.env
+const {
+  HOME_PRIVATE_KEY, FOREIGN_PRIVATE_KEY, HOME_BRIDGE_ADDRESS, FOREIGN_ASSET
+} = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
@@ -23,12 +27,34 @@ describe('bridge tests', function () {
 
   describe('generation of initial epoch keys', function () {
     let info
-    let homePrefundedUser
-    let foreignPrefundedUser
+    let ethPrefundedUser
+    let bncPrefundedUser
 
     before(async function () {
-      homePrefundedUser = await createUser(HOME_PRIVATE_KEY)
-      foreignPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
+      ethPrefundedUser = await createUser(HOME_PRIVATE_KEY)
+      bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
+
+      const bnbBalance = await bncPrefundedUser.getBnbBalance()
+      assert.ok(bnbBalance >= 0.5, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 0.5 BNB, got ${bnbBalance}`)
+      const bepBalance = await bncPrefundedUser.getBepBalance()
+      assert.ok(bepBalance >= 500, `Insufficient BEP2 balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 500 ${FOREIGN_ASSET}, got ${bepBalance}`)
+
+      const ethBalance = await ethPrefundedUser.getEthBalance()
+      assert.ok(ethBalance >= 0.5, `Insufficient ETH balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 0.5 ETH, got ${ethBalance}`)
+      const ercBalance = await ethPrefundedUser.getErcBalance()
+      assert.ok(ercBalance >= 500, `Insufficient ERC20 balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 500 ERC20, got ${ercBalance}`)
+
+
+      for (let i = 0; i < 3; i += 1) {
+        const userEthBalance = await users[i].getEthBalance()
+        assert.ok(userEthBalance >= 0.2, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.2 ETH, got ${userEthBalance}`)
+        const userErcBalance = await users[i].getErcBalance()
+        assert.ok(userErcBalance >= 50, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 50 ERC20, got ${userErcBalance}`)
+        const userBnbBalance = await users[i].getBepBalance()
+        assert.ok(userBnbBalance >= 0.1, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.1 BNB, got ${userBnbBalance}`)
+        const userBepBalance = await users[i].getBepBalance()
+        assert.ok(userErcBalance >= 50, `Insufficient BEP2 balance on ${users[i].bncAddress} in Binance network, expected 50 ${FOREIGN_ASSET}, got ${userBepBalance}`)
+      }
     })
 
     it('should generate keys', async function () {
@@ -37,8 +63,8 @@ describe('bridge tests', function () {
     })
 
     after(async function () {
-      await foreignPrefundedUser.transferBnc(info.foreignBridgeAddress, 50, 0.1)
-      await homePrefundedUser.transferEth(HOME_BRIDGE_ADDRESS, 500)
+      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 100, 0.1)
+      await ethPrefundedUser.transferErc(HOME_BRIDGE_ADDRESS, 100)
     })
   })
 
diff --git a/tests/test/removeValidator.js b/tests/test/removeValidator.js
index b33b7e3..b50fe83 100644
--- a/tests/test/removeValidator.js
+++ b/tests/test/removeValidator.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBalance } = require('./utils/bncController')
+const { getBepBalance } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
@@ -98,8 +98,8 @@ module.exports = (oldValidator) => {
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
       await delay(5000)
-      const prevBalance = await getBalance(initialInfo.foreignBridgeAddress)
-      const newBalance = await getBalance(info.foreignBridgeAddress)
+      const prevBalance = await getBepBalance(initialInfo.foreignBridgeAddress)
+      const newBalance = await getBepBalance(info.foreignBridgeAddress)
       assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
       assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
     })
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index 5638620..d1c9122 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -10,12 +10,17 @@ const bnc = axios.create({
 })
 
 module.exports = {
-  async getBalance(address) {
+  async getBnbBalance(address) {
     const response = await retry(() => bnc.get(`/api/v1/account/${address}`), 5)
     const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
     return response && tokens ? parseFloat(tokens.free) : 0
   },
-  async getSequence(address) {
+  async getBepBalance(address) {
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}`), 5)
+    const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
+    return response && tokens ? parseFloat(tokens.free) : 0
+  },
+  async getBncSequence(address) {
     const response = await retry(() => bnc.get(`/api/v1/account/${address}/sequence`), 5)
     return response ? response.data.sequence : 0
   }
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
index 3562bbe..72b6954 100644
--- a/tests/test/utils/user.js
+++ b/tests/test/utils/user.js
@@ -3,7 +3,7 @@ const BN = require('bignumber.js')
 const { getAddressFromPrivateKey } = require('@binance-chain/javascript-sdk/lib/crypto')
 
 const createBncClient = require('./bncClient')
-const { getBalance } = require('./bncController')
+const { getBnbBalance, getBepBalance } = require('./bncController')
 const { tokenContract, bridgeContract, provider } = require('./homeContracts')
 const { delay } = require('./wait')
 
@@ -11,7 +11,11 @@ const txOptions = {
   gasLimit: 200000
 }
 
+const { SIDE_RPC_URL } = process.env
+
 async function createUser(privateKey) {
+  const providerSide = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+  const walletSide = new ethers.Wallet(privateKey, providerSide)
   const wallet = new ethers.Wallet(privateKey, provider)
   const ethAddress = wallet.address
   const bncAddress = getAddressFromPrivateKey(privateKey)
@@ -24,30 +28,74 @@ async function createUser(privateKey) {
     ethAddress,
     bncAddress,
     async getEthBalance() {
+      const balance = await wallet.getBalance()
+      return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
+    },
+    async getSideEthBalance() {
+      const balance = await walletSide.getBalance()
+      return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
+    },
+    async getErcBalance() {
       const balance = await token.balanceOf(ethAddress)
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
     },
     async transferEth(to, value) {
-      const tx = await token.transfer(to, `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
+      const tx = await wallet.sendTransaction(
+        {
+          to,
+          value: `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`
+        },
+        txOptions
+      )
       await tx.wait()
     },
-    async approveEth(to, value) {
-      const tx = await token.approve(to, `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
+    async transferEthSide(to, value) {
+      const tx = await walletSide.sendTransaction(
+        {
+          to,
+          value: `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`
+        },
+        txOptions
+      )
       await tx.wait()
     },
-    async exchangeEth(value) {
-      const tx = await bridge.exchange(`0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`, txOptions)
+    async transferErc(to, value) {
+      const tx = await token.transfer(
+        to,
+        `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
+        txOptions
+      )
       await tx.wait()
     },
-    async getBncBalance() {
-      const balance = await getBalance(bncAddress)
+    async approveErc(to, value) {
+      const tx = await token.approve(
+        to,
+        `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
+        txOptions
+      )
+      await tx.wait()
+    },
+    async exchangeErc(value) {
+      const tx = await bridge.exchange(
+        `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
+        txOptions
+      )
+      await tx.wait()
+    },
+    async getBnbBalance() {
+      const balance = await getBnbBalance(bncAddress)
       await delay(1000)
       return balance
     },
-    async transferBnc(bridgeAddress, tokens, bnbs) {
-      return await bncClient.transfer(bridgeAddress, tokens, bnbs)
+    async getBepBalance() {
+      const balance = await getBepBalance(bncAddress)
+      await delay(1000)
+      return balance
     },
-    async exchangeBnc(bridgeAddress, value) {
+    async transferBepBnb(to, tokens, bnbs) {
+      return await bncClient.transfer(to, tokens, bnbs)
+    },
+    async exchangeBep(bridgeAddress, value) {
       return await bncClient.exchange(bridgeAddress, value)
     }
   }

From 8c8dad07caac6141cadc9b61b2c3bede4d02704d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 4 Nov 2019 12:53:58 +0300
Subject: [PATCH 058/129] Closes #13

---
 DEMO.md                                     | 14 +++++++-------
 src/deploy/deploy-home/.env.development     |  2 +-
 src/deploy/deploy-home/.env.staging         |  2 +-
 src/deploy/deploy-home/contracts/Bridge.sol | 10 +++++++---
 src/oracle/tss-keygen/keygen.js             |  2 +-
 src/oracle/tss-sign/signer.js               |  2 +-
 tests/test/index.js                         |  2 +-
 7 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/DEMO.md b/DEMO.md
index 6294efe..a408598 100644
--- a/DEMO.md
+++ b/DEMO.md
@@ -197,11 +197,11 @@ The public Binance Chain testnet will keep a BEP2 token.
           "nextEpoch": 3,
       
           // threshold number for current epoch, 
-          // threshold + 1 votes are required for any changes in next epoch
-          "threshold": 1, 
+          // at least threshold votes are required for any changes in next epoch
+          "threshold": 2, 
       
           // threshold number for next epoch
-          "nextThreshold": 1,
+          "nextThreshold": 2,
       
           // current bridge addresses in home and foreign networks
           "homeBridgeAddress": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
@@ -239,13 +239,13 @@ The public Binance Chain testnet will keep a BEP2 token.
           "confirmationsForFundsTransfer": 0
         }
       ``` 
-    * (7.1) Start voting process for next epoch, via sending `$THRESHOLD + 1` requests to `/vote/startVoting` url. Bridge 
+    * (7.1) Start voting process for next epoch, via sending `$THRESHOLD` requests to `/vote/startVoting` url. Bridge 
       state should be successfully changed to `voting`.
     * 7.2 Changing next epoch bridge validators / threshold
-        * (7.2.1) Add / remove validator in next validators list, via sending `$THRESHOLD + 1` requests to 
+        * (7.2.1) Add / remove validator in next validators list, via sending `$THRESHOLD` requests to 
           `/vote/addValidator/$ADDRESS` / `/vote/removeValidator/$ADDRESS`.
-        * (7.2.2) Change threshold for the next epoch, via sending `$THRESHOLD + 1` requests to `/vote/changeThreshold/$THRESHOLD`.
-    * (7.3) Start keygen process for next epoch, via sending `$THRESHOLD + 1` requests to `/vote/startKeygen` url. Bridge 
+        * (7.2.2) Change threshold for the next epoch, via sending `$THRESHOLD` requests to `/vote/changeThreshold/$THRESHOLD`.
+    * (7.3) Start keygen process for next epoch, via sending `$THRESHOLD` requests to `/vote/startKeygen` url. Bridge 
       state should be successfully changed to `keygen`, and in some time to `funds_transfer`, and then to `ready`.
     * (7.4) If keygen process at some state was stopped(i. e. one validator turned of his oracle), 
       it can be cancelled via via sending `$THRESHOLD + 1` requests to `/vote/cancelKeygen` url. After
diff --git a/src/deploy/deploy-home/.env.development b/src/deploy/deploy-home/.env.development
index 26e2481..38ec3e0 100644
--- a/src/deploy/deploy-home/.env.development
+++ b/src/deploy/deploy-home/.env.development
@@ -9,7 +9,7 @@ VALIDATOR_ADDRESS_2=0xaa006899b0ec407de930ba8a166defe59bbfd3dc
 VALIDATOR_ADDRESS_3=0x6352e3e6038e05b9da00c84ae851308f9774f883
 #VALIDATOR_ADDRESS_4=0x4db6b4bd0a3fdc03b027a60f1c48f05c572312aa
 
-THRESHOLD=1
+THRESHOLD=2
 
 MIN_TX_LIMIT=10000000000000000
 MAX_TX_LIMIT=100000000000000000000
diff --git a/src/deploy/deploy-home/.env.staging b/src/deploy/deploy-home/.env.staging
index 5d80c82..550b4bc 100644
--- a/src/deploy/deploy-home/.env.staging
+++ b/src/deploy/deploy-home/.env.staging
@@ -10,7 +10,7 @@ VALIDATOR_ADDRESS_2=0xbbbb63D6Fc58bD14dAF9eeF653650c4D10f3dBC8
 VALIDATOR_ADDRESS_3=0xcccc27ae510b63E30eC3C68AAD7DdD2578bD62ed
 #VALIDATOR_ADDRESS_4=0xdddd9300e32fe162bA420f7313651Fd901C2ed71
 
-THRESHOLD=1
+THRESHOLD=2
 
 MIN_TX_LIMIT=10000000000000000
 MAX_TX_LIMIT=100000000000000000000
diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index a964c28..c424563 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -57,7 +57,7 @@ contract Bridge {
 
     constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {
         require(validators.length > 0);
-        require(threshold < validators.length);
+        require(threshold <= validators.length);
 
         tokenContract = IERC20(_tokenContract);
 
@@ -280,6 +280,8 @@ contract Bridge {
     }
 
     function voteChangeThreshold(uint threshold) public voting currentValidator {
+        require(threshold > 0 && threshold <= getParties(), "Invalid threshold value");
+
         if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {
             states[nextEpoch].threshold = threshold;
         }
@@ -292,6 +294,8 @@ contract Bridge {
     }
 
     function voteStartKeygen() public voting currentValidator {
+        require(getNextThreshold() <= getNextParties(), "Invalid threshold number");
+
         if (tryVote(Vote.START_KEYGEN)) {
             status = Status.KEYGEN;
 
@@ -342,7 +346,7 @@ contract Bridge {
         require(!votes[personalVote], "Voted already");
 
         votes[personalVote] = true;
-        if (votesCount[vote] == getThreshold()) {
+        if (votesCount[vote] + 1 == getThreshold()) {
             votesCount[vote] = 2 ** 255;
             return true;
         } else {
@@ -356,7 +360,7 @@ contract Bridge {
         require(!votes[personalVote], "Confirmed already");
 
         votes[personalVote] = true;
-        if (votesCount[vote] == getNextThreshold()) {
+        if (votesCount[vote] + 1 == getNextThreshold()) {
             votesCount[vote] = 2 ** 255;
             return true;
         } else {
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 0f3a067..2315936 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -42,7 +42,7 @@ async function main() {
     logger.debug('Writing params')
     fs.writeFileSync('./params', JSON.stringify({
       parties: parties.toString(),
-      threshold: threshold.toString()
+      threshold: (threshold - 1).toString()
     }))
     const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], async () => {
       currentKeygenEpoch = null
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 1e49e05..c79e5f0 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -172,7 +172,7 @@ async function main() {
     logger.debug('Writing params')
     fs.writeFileSync('./params', JSON.stringify({
       parties: parties.toString(),
-      threshold: threshold.toString()
+      threshold: (threshold - 1).toString()
     }))
 
     attempt = 1
diff --git a/tests/test/index.js b/tests/test/index.js
index 8d661c8..379689c 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -81,7 +81,7 @@ describe('bridge tests', function () {
   testEthToBnc(() => users)
   testBncToEth(() => users)
 
-  testChangeThreshold(2)
+  testChangeThreshold(3)
 
   testEthToBnc(() => users)
   testBncToEth(() => users)

From 7f4bc98318b2453354c42d4d7d9c0baef243beb9 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 4 Nov 2019 17:06:37 +0300
Subject: [PATCH 059/129] Removed web3 dependency from eth watcher

---
 demo/validator1/.env.development    |     1 +
 demo/validator1/.env.staging        |     1 +
 demo/validator2/.env.development    |     1 +
 demo/validator2/.env.staging        |     1 +
 demo/validator3/.env.development    |     1 +
 demo/validator3/.env.staging        |     1 +
 package.json                        |     3 +
 src/oracle/docker-compose-test.yml  |     1 +
 src/oracle/docker-compose.yml       |     1 +
 src/oracle/ethWatcher/Bridge.json   | 35243 --------------------------
 src/oracle/ethWatcher/Dockerfile    |     1 -
 src/oracle/ethWatcher/ethWatcher.js |   196 +-
 src/oracle/ethWatcher/package.json  |     1 -
 13 files changed, 117 insertions(+), 35335 deletions(-)
 delete mode 100644 src/oracle/ethWatcher/Bridge.json

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index bba8faf..3166e7b 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -2,6 +2,7 @@ HOME_RPC_URL=http://ganache_home:8545
 HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 20692c4..5513f42 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -2,6 +2,7 @@ HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
 HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
 HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
 HOME_START_BLOCK=13276224
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=https://sokol.poa.network
 SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index d1cfebd..433ee15 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -2,6 +2,7 @@ HOME_RPC_URL=http://ganache_home:8545
 HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index edce271..e2f6756 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -2,6 +2,7 @@ HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
 HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
 HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
 HOME_START_BLOCK=13276224
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=https://sokol.poa.network
 SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 64f6f65..9c175f8 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -2,6 +2,7 @@ HOME_RPC_URL=http://ganache_home:8545
 HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_START_BLOCK=1
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index da39c37..3925fbc 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -2,6 +2,7 @@ HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
 HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
 HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
 HOME_START_BLOCK=13276224
+HOME_MAX_FETCH_RANGE_SIZE=10
 
 SIDE_RPC_URL=https://sokol.poa.network
 SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
diff --git a/package.json b/package.json
index e954bd9..154668e 100644
--- a/package.json
+++ b/package.json
@@ -10,5 +10,8 @@
   },
   "engines": {
     "node": ">=10.6.0"
+  },
+  "dependencies": {
+    "ethers": "^4.0.39"
   }
 }
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 2de2b8b..8725650 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -84,6 +84,7 @@ services:
       - HOME_START_BLOCK
       - BLOCKS_RANGE_SIZE
       - VALIDATOR_PRIVATE_KEY
+      - HOME_MAX_FETCH_RANGE_SIZE
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - LOG_LEVEL
     networks:
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 994bfa7..e16cbe4 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -93,6 +93,7 @@ services:
       - HOME_TOKEN_ADDRESS
       - HOME_START_BLOCK
       - VALIDATOR_PRIVATE_KEY
+      - HOME_MAX_FETCH_RANGE_SIZE
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - LOG_LEVEL
     networks:
diff --git a/src/oracle/ethWatcher/Bridge.json b/src/oracle/ethWatcher/Bridge.json
deleted file mode 100644
index 9eba79e..0000000
--- a/src/oracle/ethWatcher/Bridge.json
+++ /dev/null
@@ -1,35243 +0,0 @@
-{
-  "contractName": "Bridge",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "status",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "usedRange",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "votes",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbTransfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "tokenContract",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "epoch",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "votesCount",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "nextEpoch",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbTransferCount",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "name": "threshold",
-          "type": "uint256"
-        },
-        {
-          "name": "validators",
-          "type": "address[]"
-        },
-        {
-          "name": "_tokenContract",
-          "type": "address"
-        },
-        {
-          "name": "limits",
-          "type": "uint256[2]"
-        },
-        {
-          "name": "rangeSize",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "nonce",
-          "type": "uint256"
-        }
-      ],
-      "name": "ExchangeRequest",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "oldEpoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": true,
-          "name": "newEpoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewEpoch",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewEpochCancelled",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "oldEpoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": true,
-          "name": "newEpoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewFundsTransfer",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "epoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "x",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "y",
-          "type": "uint256"
-        }
-      ],
-      "name": "EpochStart",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "exchange",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
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-  "source": "pragma solidity ^0.5.0;\n\nimport './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';\n\ncontract Bridge {\n    event ExchangeRequest(uint value, uint nonce);\n    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);\n    event NewEpochCancelled(uint indexed epoch);\n    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);\n    event EpochStart(uint indexed epoch, uint x, uint y);\n\n    struct State {\n        address[] validators;\n        uint threshold;\n        uint rangeSize;\n        uint startBlock;\n        uint nonce;\n        uint x;\n        uint y;\n    }\n\n    enum Status {\n        READY, // bridge is in ready to perform operations\n        VOTING, // voting for changing in next epoch, but still ready\n        KEYGEN, //keygen, can be cancelled\n        FUNDS_TRANSFER // funds transfer, cannot be cancelled\n    }\n\n    enum Vote {\n        CONFIRM_KEYGEN,\n        CONFIRM_FUNDS_TRANSFER,\n        START_VOTING,\n        ADD_VALIDATOR,\n        REMOVE_VALIDATOR,\n        CHANGE_THRESHOLD,\n        CHANGE_RANGE_SIZE,\n        START_KEYGEN,\n        CANCEL_KEYGEN,\n        TRANSFER\n    }\n\n    mapping(uint => State) states;\n\n    mapping(bytes32 => uint) public dbTransferCount;\n    mapping(bytes32 => bool) public dbTransfer;\n    mapping(bytes32 => uint) public votesCount;\n    mapping(bytes32 => bool) public votes;\n    mapping(bytes32 => bool) public usedRange;\n\n    Status public status;\n\n    uint public epoch;\n    uint public nextEpoch;\n\n    uint minTxLimit;\n    uint maxTxLimit;\n\n    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {\n        require(validators.length > 0);\n        require(threshold < validators.length);\n\n        tokenContract = IERC20(_tokenContract);\n\n        epoch = 0;\n        status = Status.KEYGEN;\n        nextEpoch = 1;\n\n        states[nextEpoch] = State(validators, threshold, rangeSize, 0, uint(-1), 0, 0);\n\n        minTxLimit = limits[0];\n        maxTxLimit = limits[1];\n\n        emit NewEpoch(0, 1);\n    }\n\n    IERC20 public tokenContract;\n\n    modifier ready {\n        require(status == Status.READY, \"Not in ready state\");\n        _;\n    }\n\n    modifier readyOrVoting {\n        require(status == Status.READY || status == Status.VOTING, \"Not in ready or voting state\");\n        _;\n    }\n\n    modifier voting {\n        require(status == Status.VOTING, \"Not in voting state\");\n        _;\n    }\n\n    modifier keygen {\n        require(status == Status.KEYGEN, \"Not in keygen state\");\n        _;\n    }\n\n    modifier fundsTransfer {\n        require(status == Status.FUNDS_TRANSFER, \"Not in funds transfer state\");\n        _;\n    }\n\n    modifier currentValidator {\n        require(getPartyId() != 0, \"Not a current validator\");\n        _;\n    }\n\n    function exchange(uint value) public ready {\n        require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);\n\n        uint txRange = (block.number - getStartBlock()) / getRangeSize();\n        if (!usedRange[keccak256(abi.encodePacked(txRange, epoch))]) {\n            usedRange[keccak256(abi.encodePacked(txRange, epoch))] = true;\n            states[epoch].nonce++;\n        }\n\n        tokenContract.transferFrom(msg.sender, address(this), value);\n        emit ExchangeRequest(value, getNonce());\n    }\n\n    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {\n        if (tryVote(Vote.TRANSFER, hash, to, value)) {\n            tokenContract.transfer(to, value);\n        }\n    }\n\n    function confirmKeygen(uint x, uint y) public keygen {\n        require(getNextPartyId(msg.sender) != 0, \"Not a next validator\");\n\n        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {\n            states[nextEpoch].x = x;\n            states[nextEpoch].y = y;\n            if (nextEpoch == 1) {\n                status = Status.READY;\n                states[nextEpoch].startBlock = block.number;\n                states[nextEpoch].nonce = uint(-1);\n                epoch = nextEpoch;\n                emit EpochStart(epoch, x, y);\n            }\n            else {\n                status = Status.FUNDS_TRANSFER;\n                emit NewFundsTransfer(epoch, nextEpoch);\n            }\n        }\n    }\n\n    function confirmFundsTransfer() public fundsTransfer currentValidator {\n        require(epoch > 0, \"First epoch does not need funds transfer\");\n\n        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {\n            status = Status.READY;\n            states[nextEpoch].startBlock = block.number;\n            states[nextEpoch].nonce = uint(-1);\n            epoch = nextEpoch;\n            emit EpochStart(epoch, getX(), getY());\n        }\n    }\n\n    function getParties() view public returns (uint) {\n        return getParties(epoch);\n    }\n\n    function getNextParties() view public returns (uint) {\n        return getParties(nextEpoch);\n    }\n\n    function getParties(uint _epoch) view public returns (uint) {\n        return states[_epoch].validators.length;\n    }\n\n    function getThreshold() view public returns (uint) {\n        return getThreshold(epoch);\n    }\n\n    function getNextThreshold() view public returns (uint) {\n        return getThreshold(nextEpoch);\n    }\n\n    function getThreshold(uint _epoch) view public returns (uint) {\n        return states[_epoch].threshold;\n    }\n\n    function getStartBlock() view public returns (uint) {\n        return getStartBlock(epoch);\n    }\n\n    function getStartBlock(uint _epoch) view public returns (uint) {\n        return states[_epoch].startBlock;\n    }\n\n    function getRangeSize() view public returns (uint) {\n        return getRangeSize(epoch);\n    }\n\n    function getNextRangeSize() view public returns (uint) {\n        return getRangeSize(nextEpoch);\n    }\n\n    function getRangeSize(uint _epoch) view public returns (uint) {\n        return states[_epoch].rangeSize;\n    }\n\n    function getNonce() view public returns (uint) {\n        return getNonce(epoch);\n    }\n\n    function getNonce(uint _epoch) view public returns (uint) {\n        return states[_epoch].nonce;\n    }\n\n    function getX() view public returns (uint) {\n        return states[epoch].x;\n    }\n\n    function getY() view public returns (uint) {\n        return states[epoch].y;\n    }\n\n    function getPartyId() view public returns (uint) {\n        address[] memory validators = getValidators();\n        for (uint i = 0; i < getParties(); i++) {\n            if (validators[i] == msg.sender)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getNextPartyId(address a) view public returns (uint) {\n        address[] memory validators = getNextValidators();\n        for (uint i = 0; i < getNextParties(); i++) {\n            if (validators[i] == a)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getValidators() view public returns (address[] memory) {\n        return states[epoch].validators;\n    }\n\n    function getNextValidators() view public returns (address[] memory) {\n        return states[nextEpoch].validators;\n    }\n\n    function startVoting() public readyOrVoting currentValidator {\n        if (tryVote(Vote.START_VOTING)) {\n            nextEpoch++;\n            status = Status.VOTING;\n            states[nextEpoch].threshold = getThreshold();\n            states[nextEpoch].validators = getValidators();\n            states[nextEpoch].rangeSize = getRangeSize();\n        }\n    }\n\n    function voteAddValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) == 0, \"Already a validator\");\n\n        if (tryVote(Vote.ADD_VALIDATOR, validator)) {\n            states[nextEpoch].validators.push(validator);\n        }\n    }\n\n    function voteRemoveValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) != 0, \"Already not a validator\");\n\n        if (tryVote(Vote.REMOVE_VALIDATOR, validator)) {\n            _removeValidator(validator);\n        }\n    }\n\n    function _removeValidator(address validator) private {\n        for (uint i = 0; i < getNextParties() - 1; i++) {\n            if (states[nextEpoch].validators[i] == validator) {\n                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];\n                break;\n            }\n        }\n        delete states[nextEpoch].validators[getNextParties() - 1];\n        states[nextEpoch].validators.length--;\n    }\n\n    function voteChangeThreshold(uint threshold) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {\n            states[nextEpoch].threshold = threshold;\n        }\n    }\n\n    function voteChangeRangeSize(uint rangeSize) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_RANGE_SIZE, rangeSize)) {\n            states[nextEpoch].rangeSize = rangeSize;\n        }\n    }\n\n    function voteStartKeygen() public voting currentValidator {\n        if (tryVote(Vote.START_KEYGEN)) {\n            status = Status.KEYGEN;\n\n            emit NewEpoch(epoch, nextEpoch);\n        }\n    }\n\n    function voteCancelKeygen() public keygen currentValidator {\n        if (tryVote(Vote.CANCEL_KEYGEN)) {\n            status = Status.VOTING;\n\n            emit NewEpochCancelled(nextEpoch);\n        }\n    }\n\n    function tryVote(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, address addr) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, uint num) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));\n        return putVote(vote);\n    }\n\n    function tryConfirm(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putConfirm(vote);\n    }\n\n    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));\n        return putConfirm(vote);\n    }\n\n    function putVote(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Voted already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function putConfirm(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Confirmed already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getNextThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function personalizeVote(bytes32 vote) private view returns (bytes32) {\n        return keccak256(abi.encodePacked(vote, msg.sender));\n    }\n}\n",
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-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "10804:14:0"
-            },
-            "returnParameters": {
-              "id": 1274,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1273,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1322,
-                  "src": "10836:4:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 1272,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "10836:4:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "10835:6:0"
-            },
-            "scope": 1340,
-            "src": "10785:420:0",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "private"
-          },
-          {
-            "body": {
-              "id": 1338,
-              "nodeType": "Block",
-              "src": "11281:69:0",
-              "statements": [
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "arguments": [
-                          {
-                            "argumentTypes": null,
-                            "id": 1332,
-                            "name": "vote",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 1324,
-                            "src": "11325:4:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            }
-                          },
-                          {
-                            "argumentTypes": null,
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 1333,
-                              "name": "msg",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 13088,
-                              "src": "11331:3:0",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_magic_message",
-                                "typeString": "msg"
-                              }
-                            },
-                            "id": 1334,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": false,
-                            "lValueRequested": false,
-                            "memberName": "sender",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": null,
-                            "src": "11331:10:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          }
-                        ],
-                        "expression": {
-                          "argumentTypes": [
-                            {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            },
-                            {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": null,
-                            "id": 1330,
-                            "name": "abi",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 13075,
-                            "src": "11308:3:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_magic_abi",
-                              "typeString": "abi"
-                            }
-                          },
-                          "id": 1331,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": true,
-                          "lValueRequested": false,
-                          "memberName": "encodePacked",
-                          "nodeType": "MemberAccess",
-                          "referencedDeclaration": null,
-                          "src": "11308:16:0",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
-                            "typeString": "function () pure returns (bytes memory)"
-                          }
-                        },
-                        "id": 1335,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": false,
-                        "kind": "functionCall",
-                        "lValueRequested": false,
-                        "names": [],
-                        "nodeType": "FunctionCall",
-                        "src": "11308:34:0",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "id": 1329,
-                      "name": "keccak256",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 13082,
-                      "src": "11298:9:0",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
-                        "typeString": "function (bytes memory) pure returns (bytes32)"
-                      }
-                    },
-                    "id": 1336,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "11298:45:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "functionReturnParameters": 1328,
-                  "id": 1337,
-                  "nodeType": "Return",
-                  "src": "11291:52:0"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 1339,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "personalizeVote",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 1325,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1324,
-                  "name": "vote",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1339,
-                  "src": "11236:12:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1323,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "11236:7:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "11235:14:0"
-            },
-            "returnParameters": {
-              "id": 1328,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1327,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1339,
-                  "src": "11272:7:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1326,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "11272:7:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "11271:9:0"
-            },
-            "scope": 1340,
-            "src": "11211:139:0",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "private"
-          }
-        ],
-        "scope": 1341,
-        "src": "93:11259:0"
-      }
-    ],
-    "src": "0:11353:0"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {
-    "44": {
-      "events": {
-        "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpoch",
-          "type": "event",
-          "signature": "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609"
-        },
-        "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpochCancelled",
-          "type": "event",
-          "signature": "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a"
-        },
-        "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewFundsTransfer",
-          "type": "event",
-          "signature": "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b"
-        },
-        "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "x",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "y",
-              "type": "uint256"
-            }
-          ],
-          "name": "EpochStart",
-          "type": "event",
-          "signature": "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c"
-        },
-        "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "value",
-              "type": "uint256"
-            }
-          ],
-          "name": "ExchangeRequest",
-          "type": "event",
-          "signature": "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e"
-        },
-        "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "value",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "nonce",
-              "type": "uint256"
-            }
-          ],
-          "name": "ExchangeRequest",
-          "type": "event",
-          "signature": "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02"
-        }
-      },
-      "links": {},
-      "address": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
-      "transactionHash": "0x912e1b3c5341609e1d0c0cd5d81ff6b7d9b2e8f497bd393ea91af1a4038cba78"
-    }
-  },
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-10-28T13:22:54.868Z",
-  "devdoc": {
-    "methods": {}
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/oracle/ethWatcher/Dockerfile b/src/oracle/ethWatcher/Dockerfile
index 5b67a29..9ca8e0f 100644
--- a/src/oracle/ethWatcher/Dockerfile
+++ b/src/oracle/ethWatcher/Dockerfile
@@ -10,6 +10,5 @@ COPY ./ethWatcher/package.json /watcher/
 RUN npm install
 
 COPY ./ethWatcher/ethWatcher.js ./shared/db.js ./shared/logger.js ./shared/amqp.js ./shared/crypto.js ./shared/wait.js /watcher/
-COPY ./ethWatcher/Bridge.json /watcher/contracts_data/
 
 ENTRYPOINT ["node", "ethWatcher.js"]
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 23a83d6..f770fda 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -1,5 +1,4 @@
-const Web3 = require('web3')
-const { utils } = require('ethers')
+const ethers = require('ethers')
 const BN = require('bignumber.js')
 const axios = require('axios')
 
@@ -9,15 +8,25 @@ const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress } = require('./crypto')
 const { delay } = require('./wait')
 
-const abiBridge = require('./contracts_data/Bridge.json').abi
-
 const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY
 } = process.env
+const HOME_MAX_FETCH_RANGE_SIZE = parseInt(process.env.HOME_MAX_FETCH_RANGE_SIZE, 10)
 
-const homeWeb3 = new Web3(HOME_RPC_URL)
-const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
-const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
+const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+const bridgeAbi = [
+  'event ExchangeRequest(uint value, uint nonce)',
+  'event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch)',
+  'event NewEpochCancelled(uint indexed epoch)',
+  'event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch)',
+  'event EpochStart(uint indexed epoch, uint x, uint y)',
+  'function getThreshold(uint epoch) view returns (uint)',
+  'function getParties(uint epoch) view returns (uint)',
+  'function getRangeSize() view returns (uint)',
+  'function getValidators() view returns (address[])'
+]
+const bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, provider)
+const validatorAddress = ethers.utils.computeAddress(`0x${VALIDATOR_PRIVATE_KEY}`)
 
 const foreignNonce = []
 let channel
@@ -25,6 +34,7 @@ let exchangeQueue
 let signQueue
 let keygenQueue
 let cancelKeygenQueue
+let chainId
 let blockNumber
 let epoch
 let epochStart
@@ -72,20 +82,18 @@ async function resetFutureMessages(queue) {
 }
 
 async function sendKeygen(event) {
-  const newEpoch = event.returnValues.newEpoch.toNumber()
+  const newEpoch = event.values.newEpoch.toNumber()
   keygenQueue.send({
     epoch: newEpoch,
     blockNumber,
-    threshold: (await bridge.methods.getThreshold(newEpoch)
-      .call()).toNumber(),
-    parties: (await bridge.methods.getParties(newEpoch)
-      .call()).toNumber()
+    threshold: (await bridge.getThreshold(newEpoch)).toNumber(),
+    parties: (await bridge.getParties(newEpoch)).toNumber()
   })
   logger.debug('Sent keygen start event')
 }
 
 function sendKeygenCancellation(event) {
-  const eventEpoch = event.returnValues.epoch.toNumber()
+  const eventEpoch = event.values.epoch.toNumber()
   cancelKeygenQueue.send({
     epoch: eventEpoch,
     blockNumber
@@ -94,36 +102,33 @@ function sendKeygenCancellation(event) {
 }
 
 async function sendSignFundsTransfer(event) {
-  const newEpoch = event.returnValues.newEpoch.toNumber()
-  const oldEpoch = event.returnValues.oldEpoch.toNumber()
+  const newEpoch = event.values.newEpoch.toNumber()
+  const oldEpoch = event.values.oldEpoch.toNumber()
   signQueue.send({
     epoch: oldEpoch,
     blockNumber,
     newEpoch,
     nonce: foreignNonce[oldEpoch],
-    threshold: (await bridge.methods.getThreshold(oldEpoch)
-      .call()).toNumber(),
-    parties: (await bridge.methods.getParties(oldEpoch)
-      .call()).toNumber()
+    threshold: (await bridge.getThreshold(oldEpoch)).toNumber(),
+    parties: (await bridge.getParties(oldEpoch)).toNumber()
   })
   logger.debug('Sent sign funds transfer event')
   foreignNonce[oldEpoch] += 1
   redisTx.incr(`foreignNonce${oldEpoch}`)
 }
 
-async function sendSign(event) {
-  const tx = await homeWeb3.eth.getTransaction(event.transactionHash)
-  const msg = utils.serializeTransaction({
+async function sendSign(event, transactionHash) {
+  const tx = await provider.getTransaction(transactionHash)
+  const msg = ethers.utils.serializeTransaction({
     nonce: tx.nonce,
-    gasPrice: `0x${new BN(tx.gasPrice).toString(16)}`,
-    gasLimit: `0x${new BN(tx.gas).toString(16)}`,
+    gasPrice: tx.gasPrice,
+    gasLimit: tx.gasLimit,
     to: tx.to,
-    value: `0x${new BN(tx.value).toString(16)}`,
-    data: tx.input,
-    chainId: await homeWeb3.eth.net.getId()
+    data: tx.data,
+    chainId
   })
-  const hash = homeWeb3.utils.sha3(msg)
-  const publicKey = utils.recoverPublicKey(hash, {
+  const hash = ethers.utils.keccak256(msg)
+  const publicKey = ethers.utils.recoverPublicKey(hash, {
     r: tx.r,
     s: tx.s,
     v: tx.v
@@ -135,9 +140,8 @@ async function sendSign(event) {
       x: publicKey.substr(4, 64),
       y: publicKey.substr(68, 64)
     }),
-    value: (new BN(event.returnValues.value)).dividedBy(10 ** 18)
-      .toFixed(8, 3),
-    nonce: event.returnValues.nonce.toNumber()
+    value: (new BN(event.values.value)).dividedBy(10 ** 18).toFixed(8, 3),
+    nonce: event.values.nonce.toNumber()
   }
 
   exchangeQueue.send(msgToQueue)
@@ -154,22 +158,19 @@ async function sendStartSign() {
     epoch,
     blockNumber,
     nonce: foreignNonce[epoch],
-    threshold: (await bridge.methods.getThreshold(epoch)
-      .call()).toNumber(),
-    parties: (await bridge.methods.getParties(epoch)
-      .call()).toNumber()
+    threshold: (await bridge.getThreshold(epoch)).toNumber(),
+    parties: (await bridge.getParties(epoch)).toNumber()
   })
   foreignNonce[epoch] += 1
 }
 
 async function processEpochStart(event) {
-  epoch = event.returnValues.epoch.toNumber()
+  epoch = event.values.epoch.toNumber()
   epochStart = blockNumber
   logger.info(`Epoch ${epoch} started`)
-  rangeSize = (await bridge.methods.getRangeSize()
-    .call()).toNumber()
-  isCurrentValidator = (await bridge.methods.getValidators()
-    .call()).includes(validatorAddress)
+  rangeSize = (await bridge.getRangeSize()).toNumber()
+  isCurrentValidator = (await bridge.getValidators())
+    .includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -186,10 +187,16 @@ async function initialize() {
   keygenQueue = await assertQueue(channel, 'keygenQueue')
   cancelKeygenQueue = await assertQueue(channel, 'cancelKeygenQueue')
 
-  const events = await bridge.getPastEvents('EpochStart', {
-    fromBlock: 1
-  })
-  epoch = events.length ? events[events.length - 1].returnValues.epoch.toNumber() : 0
+  chainId = (await provider.getNetwork()).chainId
+
+  const events = (await provider.getLogs({
+    address: HOME_BRIDGE_ADDRESS,
+    fromBlock: 1,
+    toBlock: 'latest',
+    topics: bridge.filters.EpochStart().topics
+  })).map((log) => bridge.interface.parseLog(log))
+
+  epoch = events.length ? events[events.length - 1].values.epoch.toNumber() : 0
   logger.info(`Current epoch ${epoch}`)
   epochStart = events.length ? events[events.length - 1].blockNumber : 1
   const saved = (parseInt(await redis.get('homeBlock'), 10) + 1) || parseInt(HOME_START_BLOCK, 10)
@@ -206,10 +213,11 @@ async function initialize() {
     blockNumber = saved
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`), 10) || 0
   }
-  rangeSize = (await bridge.methods.getRangeSize().call()).toNumber()
+  rangeSize = (await bridge.getRangeSize()).toNumber()
   logger.debug(`Range size ${rangeSize}`)
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.methods.getValidators().call()).includes(validatorAddress)
+  isCurrentValidator = (await bridge.getValidators())
+    .includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -226,60 +234,68 @@ async function initialize() {
 }
 
 async function loop() {
-  logger.debug(`Watching events in block #${blockNumber}`)
-  if (await homeWeb3.eth.getBlock(blockNumber) === null) {
-    logger.debug('No block')
-    await delay(1000)
+  const latestBlockNumber = await provider.getBlockNumber()
+  if (latestBlockNumber < blockNumber) {
+    logger.debug(`No block after ${latestBlockNumber}`)
+    await delay(2000)
     return
   }
 
+  const endBlock = Math.min(latestBlockNumber, blockNumber + HOME_MAX_FETCH_RANGE_SIZE - 1)
+
   redisTx = redis.multi()
 
-  const bridgeEvents = await bridge.getPastEvents('allEvents', {
+  logger.debug(`Watching events in blocks #${blockNumber}-${endBlock}`)
+
+  const bridgeEvents = (await provider.getLogs({
+    address: HOME_BRIDGE_ADDRESS,
     fromBlock: blockNumber,
-    toBlock: blockNumber
-  })
+    toBlock: endBlock,
+    topics: []
+  }))
 
-  for (let i = 0; i < bridgeEvents.length; i += 1) {
-    const event = bridgeEvents[i]
-    switch (event.event) {
-      case 'NewEpoch':
-        await sendKeygen(event)
-        break
-      case 'NewEpochCancelled':
-        sendKeygenCancellation(event)
-        break
-      case 'NewFundsTransfer':
-        if (isCurrentValidator) {
-          await sendSignFundsTransfer(event)
-        }
-        break
-      case 'ExchangeRequest':
-        if (isCurrentValidator) {
-          await sendSign(event)
-        }
-        break
-      case 'EpochStart':
-        await processEpochStart(event)
-        break
-      default:
-        logger.warn('Unknown event %o', event)
+  for (let curBlockNumber = blockNumber, i = 0; curBlockNumber <= endBlock; curBlockNumber += 1) {
+    while (i < bridgeEvents.length && bridgeEvents[i].blockNumber === curBlockNumber) {
+      const event = bridge.interface.parseLog(bridgeEvents[i])
+      logger.debug('%o %o', event, bridgeEvents[i])
+      switch (event.name) {
+        case 'NewEpoch':
+          await sendKeygen(event)
+          break
+        case 'NewEpochCancelled':
+          sendKeygenCancellation(event)
+          break
+        case 'NewFundsTransfer':
+          if (isCurrentValidator) {
+            await sendSignFundsTransfer(event)
+          }
+          break
+        case 'ExchangeRequest':
+          if (isCurrentValidator) {
+            await sendSign(event, bridgeEvents[i].transactionHash)
+          }
+          break
+        case 'EpochStart':
+          await processEpochStart(event)
+          break
+        default:
+          logger.warn('Unknown event %o', event)
+      }
+      i += 1
+    }
+    if ((curBlockNumber + 1 - epochStart) % rangeSize === 0) {
+      logger.info('Reached end of the current block range')
+
+      if (lastTransactionBlockNumber > curBlockNumber - rangeSize) {
+        logger.info('Sending message to start signature generation for the ended range')
+        await sendStartSign()
+      }
     }
   }
 
-  if ((blockNumber + 1 - epochStart) % rangeSize === 0) {
-    logger.info('Reached end of the current block range')
-
-    if (lastTransactionBlockNumber > blockNumber - rangeSize) {
-      logger.info('Sending message to start signature generation for the ended range')
-      await sendStartSign()
-    }
-  }
-
-  blockNumber += 1
+  blockNumber = endBlock + 1
   // Exec redis tx
-  await redisTx.incr('homeBlock')
-    .exec()
+  await redisTx.incr('homeBlock').exec()
   await redis.save()
 }
 
diff --git a/src/oracle/ethWatcher/package.json b/src/oracle/ethWatcher/package.json
index 26ec5a6..a7517af 100644
--- a/src/oracle/ethWatcher/package.json
+++ b/src/oracle/ethWatcher/package.json
@@ -4,7 +4,6 @@
   "dependencies": {
     "ioredis": "4.10.0",
     "amqplib": "0.5.3",
-    "web3": "1.0.0-beta.55",
     "ethers": "4.0.33",
     "bignumber.js": "9.0.0",
     "bech32": "1.1.3",

From 4f66ae95782958987fcf20da9398103d7b7b5a49 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 4 Nov 2019 18:01:35 +0300
Subject: [PATCH 060/129] Get rid of web3js in test-services

---
 src/test-services/ethereumBalance/Dockerfile  |     2 +-
 src/test-services/ethereumBalance/IERC20.json |  1884 -
 .../ethereumBalance/package.json              |     2 +-
 .../ethereumBalance/testGetEthereumBalance.js |    29 +-
 src/test-services/ethereumSend/Bridge.json    | 29782 ----------------
 src/test-services/ethereumSend/Dockerfile     |     2 +-
 src/test-services/ethereumSend/IERC20.json    |  1884 -
 src/test-services/ethereumSend/package.json   |     3 +-
 .../ethereumSend/testEthereumSend.js          |   103 +-
 src/test-services/sidePrefund/Dockerfile      |     4 +-
 src/test-services/sidePrefund/package.json    |     3 +-
 .../sidePrefund/testEthereumSend.js           |    33 -
 .../sidePrefund/testSidePrefund.js            |    26 +
 13 files changed, 78 insertions(+), 33679 deletions(-)
 delete mode 100644 src/test-services/ethereumBalance/IERC20.json
 delete mode 100644 src/test-services/ethereumSend/Bridge.json
 delete mode 100644 src/test-services/ethereumSend/IERC20.json
 delete mode 100644 src/test-services/sidePrefund/testEthereumSend.js
 create mode 100644 src/test-services/sidePrefund/testSidePrefund.js

diff --git a/src/test-services/ethereumBalance/Dockerfile b/src/test-services/ethereumBalance/Dockerfile
index 7b6b094..0086b3e 100644
--- a/src/test-services/ethereumBalance/Dockerfile
+++ b/src/test-services/ethereumBalance/Dockerfile
@@ -6,6 +6,6 @@ COPY package.json /test/
 
 RUN npm install
 
-COPY testGetEthereumBalance.js IERC20.json /test/
+COPY testGetEthereumBalance.js /test/
 
 ENTRYPOINT ["node", "testGetEthereumBalance.js"]
diff --git a/src/test-services/ethereumBalance/IERC20.json b/src/test-services/ethereumBalance/IERC20.json
deleted file mode 100644
index 066d309..0000000
--- a/src/test-services/ethereumBalance/IERC20.json
+++ /dev/null
@@ -1,1884 +0,0 @@
-{
-  "contractName": "IERC20",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Transfer",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Approval",
-      "type": "event"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "totalSupply",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "account",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "name": "spender",
-          "type": "address"
-        }
-      ],
-      "name": "allowance",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "sender",
-          "type": "address"
-        },
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
-  "metadata": "{\"compiler\":{\"version\":\"0.5.9+commit.e560f70d\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"sender\",\"type\":\"address\"},{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}],\"devdoc\":{\"details\":\"Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.\",\"methods\":{\"allowance(address,address)\":{\"details\":\"Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called.\"},\"approve(address,uint256)\":{\"details\":\"Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event.\"},\"balanceOf(address)\":{\"details\":\"Returns the amount of tokens owned by `account`.\"},\"totalSupply()\":{\"details\":\"Returns the amount of tokens in existence.\"},\"transfer(address,uint256)\":{\"details\":\"Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":\"IERC20\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\",\"dweb:/ipfs/QmP5NaEwZthQeM2ESz4WTT3osrP7jhbvu7ocbttBi2JAw6\"]}},\"version\":1}",
-  "bytecode": "0x",
-  "deployedBytecode": "0x",
-  "sourceMap": "",
-  "deployedSourceMap": "",
-  "source": "pragma solidity ^0.5.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP. Does not include\n * the optional functions; to access them see `ERC20Detailed`.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a `Transfer` event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through `transferFrom`. This is\n     * zero by default.\n     *\n     * This value changes when `approve` or `transferFrom` are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * > Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an `Approval` event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a `Transfer` event.\n     */\n    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to `approve`. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n",
-  "sourcePath": "/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
-  "ast": {
-    "absolutePath": "/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol",
-    "exportedSymbols": {
-      "IERC20": [
-        9841
-      ]
-    },
-    "id": 9842,
-    "nodeType": "SourceUnit",
-    "nodes": [
-      {
-        "id": 9774,
-        "literals": [
-          "solidity",
-          "^",
-          "0.5",
-          ".0"
-        ],
-        "nodeType": "PragmaDirective",
-        "src": "0:23:114"
-      },
-      {
-        "baseContracts": [],
-        "contractDependencies": [],
-        "contractKind": "interface",
-        "documentation": "@dev Interface of the ERC20 standard as defined in the EIP. Does not include\nthe optional functions; to access them see `ERC20Detailed`.",
-        "fullyImplemented": false,
-        "id": 9841,
-        "linearizedBaseContracts": [
-          9841
-        ],
-        "name": "IERC20",
-        "nodeType": "ContractDefinition",
-        "nodes": [
-          {
-            "body": null,
-            "documentation": "@dev Returns the amount of tokens in existence.",
-            "id": 9779,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "totalSupply",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9775,
-              "nodeType": "ParameterList",
-              "parameters": [],
-              "src": "290:2:114"
-            },
-            "returnParameters": {
-              "id": 9778,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9777,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9779,
-                  "src": "316:7:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9776,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "316:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "315:9:114"
-            },
-            "scope": 9841,
-            "src": "270:55:114",
-            "stateMutability": "view",
-            "superFunction": 12575,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Returns the amount of tokens owned by `account`.",
-            "id": 9786,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "balanceOf",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9782,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9781,
-                  "name": "account",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9786,
-                  "src": "427:15:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9780,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "427:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "426:17:114"
-            },
-            "returnParameters": {
-              "id": 9785,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9784,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9786,
-                  "src": "467:7:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9783,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "467:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "466:9:114"
-            },
-            "scope": 9841,
-            "src": "408:68:114",
-            "stateMutability": "view",
-            "superFunction": 12582,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Moves `amount` tokens from the caller's account to `recipient`.\n     * Returns a boolean value indicating whether the operation succeeded.\n     * Emits a `Transfer` event.",
-            "id": 9795,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "transfer",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9791,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9788,
-                  "name": "recipient",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9795,
-                  "src": "714:17:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9787,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "714:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9790,
-                  "name": "amount",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9795,
-                  "src": "733:14:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9789,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "733:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "713:35:114"
-            },
-            "returnParameters": {
-              "id": 9794,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9793,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9795,
-                  "src": "767:4:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 9792,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "767:4:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "766:6:114"
-            },
-            "scope": 9841,
-            "src": "696:77:114",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Returns the remaining number of tokens that `spender` will be\nallowed to spend on behalf of `owner` through `transferFrom`. This is\nzero by default.\n     * This value changes when `approve` or `transferFrom` are called.",
-            "id": 9804,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "allowance",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9800,
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-                  "nodeType": "VariableDeclaration",
-                  "scope": 9795,
-                  "src": "767:4:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 9792,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "767:4:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "766:6:114"
-            },
-            "scope": 9841,
-            "src": "696:77:114",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Returns the remaining number of tokens that `spender` will be\nallowed to spend on behalf of `owner` through `transferFrom`. This is\nzero by default.\n     * This value changes when `approve` or `transferFrom` are called.",
-            "id": 9804,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "allowance",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9800,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9797,
-                  "name": "owner",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9804,
-                  "src": "1067:13:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9796,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1067:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9799,
-                  "name": "spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9804,
-                  "src": "1082:15:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9798,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1082:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1066:32:114"
-            },
-            "returnParameters": {
-              "id": 9803,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9802,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9804,
-                  "src": "1122:7:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9801,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1122:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1121:9:114"
-            },
-            "scope": 9841,
-            "src": "1048:83:114",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     * Returns a boolean value indicating whether the operation succeeded.\n     * > Beware that changing an allowance with this method brings the risk\nthat someone may use both the old and the new allowance by unfortunate\ntransaction ordering. One possible solution to mitigate this race\ncondition is to first reduce the spender's allowance to 0 and set the\ndesired value afterwards:\nhttps://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     * Emits an `Approval` event.",
-            "id": 9813,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "approve",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9809,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9806,
-                  "name": "spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9813,
-                  "src": "1792:15:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9805,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1792:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9808,
-                  "name": "amount",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9813,
-                  "src": "1809:14:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9807,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1809:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1791:33:114"
-            },
-            "returnParameters": {
-              "id": 9812,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9811,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9813,
-                  "src": "1843:4:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 9810,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1843:4:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1842:6:114"
-            },
-            "scope": 9841,
-            "src": "1775:74:114",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "body": null,
-            "documentation": "@dev Moves `amount` tokens from `sender` to `recipient` using the\nallowance mechanism. `amount` is then deducted from the caller's\nallowance.\n     * Returns a boolean value indicating whether the operation succeeded.\n     * Emits a `Transfer` event.",
-            "id": 9824,
-            "implemented": false,
-            "kind": "function",
-            "modifiers": [],
-            "name": "transferFrom",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 9820,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9815,
-                  "name": "sender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2178:14:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9814,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2178:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9817,
-                  "name": "recipient",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2194:17:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9816,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2194:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9819,
-                  "name": "amount",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2213:14:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9818,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2213:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2177:51:114"
-            },
-            "returnParameters": {
-              "id": 9823,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9822,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2247:4:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 9821,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2247:4:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2246:6:114"
-            },
-            "scope": 9841,
-            "src": "2156:97:114",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "anonymous": false,
-            "documentation": "@dev Emitted when `value` tokens are moved from one account (`from`) to\nanother (`to`).\n     * Note that `value` may be zero.",
-            "id": 9832,
-            "name": "Transfer",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 9831,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9826,
-                  "indexed": true,
-                  "name": "from",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2437:20:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9825,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2437:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9828,
-                  "indexed": true,
-                  "name": "to",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2459:18:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9827,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2459:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9830,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2479:13:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9829,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2479:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2436:57:114"
-            },
-            "src": "2422:72:114"
-          },
-          {
-            "anonymous": false,
-            "documentation": "@dev Emitted when the allowance of a `spender` for an `owner` is set by\na call to `approve`. `value` is the new allowance.",
-            "id": 9840,
-            "name": "Approval",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 9839,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9834,
-                  "indexed": true,
-                  "name": "owner",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2668:21:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9833,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2668:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9836,
-                  "indexed": true,
-                  "name": "spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2691:23:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9835,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2691:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9838,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2716:13:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9837,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2716:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2667:63:114"
-            },
-            "src": "2653:78:114"
-          }
-        ],
-        "scope": 9842,
-        "src": "176:2557:114"
-      }
-    ],
-    "src": "0:2734:114"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {},
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-07-17T07:17:15.653Z",
-  "devdoc": {
-    "details": "Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.",
-    "methods": {
-      "allowance(address,address)": {
-        "details": "Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called."
-      },
-      "approve(address,uint256)": {
-        "details": "Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event."
-      },
-      "balanceOf(address)": {
-        "details": "Returns the amount of tokens owned by `account`."
-      },
-      "totalSupply()": {
-        "details": "Returns the amount of tokens in existence."
-      },
-      "transfer(address,uint256)": {
-        "details": "Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      },
-      "transferFrom(address,address,uint256)": {
-        "details": "Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      }
-    }
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/test-services/ethereumBalance/package.json b/src/test-services/ethereumBalance/package.json
index fcb5d8c..f593cf6 100644
--- a/src/test-services/ethereumBalance/package.json
+++ b/src/test-services/ethereumBalance/package.json
@@ -2,7 +2,7 @@
   "name": "ethereum-balance",
   "version": "0.0.1",
   "dependencies": {
-    "web3": "1.0.0-beta.55",
+    "ethers": "4.0.39",
     "bignumber.js": "9.0.0"
   }
 }
diff --git a/src/test-services/ethereumBalance/testGetEthereumBalance.js b/src/test-services/ethereumBalance/testGetEthereumBalance.js
index 8b9ac8a..582707c 100644
--- a/src/test-services/ethereumBalance/testGetEthereumBalance.js
+++ b/src/test-services/ethereumBalance/testGetEthereumBalance.js
@@ -1,25 +1,28 @@
-const Web3 = require('web3')
+const ethers = require('ethers')
 const BN = require('bignumber.js')
 
 const { HOME_RPC_URL, HOME_TOKEN_ADDRESS } = process.env
 
-const abiToken = require('./IERC20').abi
+const tokenAbi = [
+  'function balanceOf(address account) view returns (uint256)'
+]
 
-const web3 = new Web3(HOME_RPC_URL, null, { transactionConfirmationBlocks: 1 })
-const token = new web3.eth.Contract(abiToken, HOME_TOKEN_ADDRESS)
+const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+const token = new ethers.Contract(HOME_TOKEN_ADDRESS, tokenAbi, provider)
 
-function main() {
+async function main() {
   const address = process.argv[2]
 
-  web3.eth.getBalance(address)
-    .then((balance) => console.log(`${balance.toString()} wei`))
+  const ethBalance = await provider.getBalance(address)
+  console.log(`${ethBalance.toString()} wei`)
 
-  token.methods.balanceOf(address)
-    .call()
-    .then((balance) => parseFloat(new BN(balance).dividedBy(10 ** 18)
-      .toFixed(8, 3)))
-    .then((balance) => console.log(`${balance.toString()} tokens`))
-    .catch(() => console.log('0 tokens'))
+  try {
+    const ercBalance = await token.balanceOf(address)
+    const floatBalance = new BN(ercBalance).dividedBy(10 ** 18).toFixed(8, 3)
+    console.log(`${floatBalance.toString()} tokens`)
+  } catch (e) {
+    console.log('0 tokens')
+  }
 }
 
 main()
diff --git a/src/test-services/ethereumSend/Bridge.json b/src/test-services/ethereumSend/Bridge.json
deleted file mode 100644
index ff90709..0000000
--- a/src/test-services/ethereumSend/Bridge.json
+++ /dev/null
@@ -1,29782 +0,0 @@
-{
-  "contractName": "Bridge",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "status",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "votes",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbTransfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "tokenContract",
-      "outputs": [
-        {
-          "name": "",
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-  "source": "pragma solidity ^0.5.0;\n\nimport './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';\n\ncontract Bridge {\n    event ExchangeRequest(uint value);\n    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);\n    event NewEpochCancelled(uint indexed epoch);\n    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);\n    event EpochStart(uint indexed epoch, uint x, uint y);\n\n    struct State {\n        address[] validators;\n        uint threshold;\n        uint x;\n        uint y;\n    }\n\n    enum Status {\n        READY, // bridge is in ready to perform operations\n        VOTING, // voting for changing in next epoch, but still ready\n        KEYGEN, //keygen, can be cancelled\n        FUNDS_TRANSFER // funds transfer, cannot be cancelled\n    }\n\n    enum Vote {\n        CONFIRM_KEYGEN,\n        CONFIRM_FUNDS_TRANSFER,\n        START_VOTING,\n        ADD_VALIDATOR,\n        REMOVE_VALIDATOR,\n        CHANGE_THRESHOLD,\n        START_KEYGEN,\n        CANCEL_KEYGEN,\n        TRANSFER\n    }\n\n    mapping(uint => State) states;\n\n    mapping(bytes32 => uint) public dbTransferCount;\n    mapping(bytes32 => bool) public dbTransfer;\n    mapping(bytes32 => uint) public votesCount;\n    mapping(bytes32 => bool) public votes;\n\n    Status public status;\n\n    uint public epoch;\n    uint public nextEpoch;\n\n    uint minTxLimit;\n    uint maxTxLimit;\n\n    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits) public {\n        require(validators.length > 0);\n        require(threshold < validators.length);\n\n        tokenContract = IERC20(_tokenContract);\n\n        epoch = 0;\n        status = Status.KEYGEN;\n        nextEpoch = 1;\n\n        states[1] = State(validators, threshold, 0, 0);\n\n        minTxLimit = limits[0];\n        maxTxLimit = limits[1];\n\n        emit NewEpoch(0, 1);\n    }\n\n    IERC20 public tokenContract;\n\n    modifier ready {\n        require(status == Status.READY, \"Not in ready state\");\n        _;\n    }\n\n    modifier readyOrVoting {\n        require(status == Status.READY || status == Status.VOTING, \"Not in ready or voting state\");\n        _;\n    }\n\n    modifier voting {\n        require(status == Status.VOTING, \"Not in voting state\");\n        _;\n    }\n\n    modifier keygen {\n        require(status == Status.KEYGEN, \"Not in keygen state\");\n        _;\n    }\n\n    modifier fundsTransfer {\n        require(status == Status.FUNDS_TRANSFER, \"Not in funds transfer state\");\n        _;\n    }\n\n    modifier currentValidator {\n        require(getPartyId() != 0, \"Not a current validator\");\n        _;\n    }\n\n    function exchange(uint value) public ready {\n        require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);\n\n        tokenContract.transferFrom(msg.sender, address(this), value);\n        emit ExchangeRequest(value);\n    }\n\n    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {\n        if (tryVote(Vote.TRANSFER, hash, to, value)) {\n            tokenContract.transfer(to, value);\n        }\n    }\n\n    function confirmKeygen(uint x, uint y) public keygen {\n        require(getNextPartyId(msg.sender) != 0, \"Not a next validator\");\n\n        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {\n            states[nextEpoch].x = x;\n            states[nextEpoch].y = y;\n            if (nextEpoch == 1) {\n                status = Status.READY;\n                epoch = nextEpoch;\n                emit EpochStart(epoch, x, y);\n            }\n            else {\n                status = Status.FUNDS_TRANSFER;\n                emit NewFundsTransfer(epoch, nextEpoch);\n            }\n        }\n    }\n\n    function confirmFundsTransfer() public fundsTransfer currentValidator {\n        require(epoch > 0, \"First epoch does not need funds transfer\");\n\n        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {\n            status = Status.READY;\n            epoch = nextEpoch;\n            emit EpochStart(epoch, states[epoch].x, states[epoch].y);\n        }\n    }\n\n    function getParties() view public returns (uint) {\n        return getParties(epoch);\n    }\n\n    function getNextParties() view public returns (uint) {\n        return getParties(nextEpoch);\n    }\n\n    function getParties(uint _epoch) view public returns (uint) {\n        return states[_epoch].validators.length;\n    }\n\n    function getThreshold() view public returns (uint) {\n        return getThreshold(epoch);\n    }\n\n    function getNextThreshold() view public returns (uint) {\n        return getThreshold(nextEpoch);\n    }\n\n    function getThreshold(uint _epoch) view public returns (uint) {\n        return states[_epoch].threshold;\n    }\n\n    function getX() view public returns (uint) {\n        return states[epoch].x;\n    }\n\n    function getY() view public returns (uint) {\n        return states[epoch].y;\n    }\n\n    function getPartyId() view public returns (uint) {\n        address[] memory validators = getValidators();\n        for (uint i = 0; i < getParties(); i++) {\n            if (validators[i] == msg.sender)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getNextPartyId(address a) view public returns (uint) {\n        address[] memory validators = getNextValidators();\n        for (uint i = 0; i < getNextParties(); i++) {\n            if (validators[i] == a)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getValidators() view public returns (address[] memory) {\n        return states[epoch].validators;\n    }\n\n    function getNextValidators() view public returns (address[] memory) {\n        return states[nextEpoch].validators;\n    }\n\n    function startVoting() public readyOrVoting currentValidator {\n        if (tryVote(Vote.START_VOTING)) {\n        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states[nextEpoch].validators[i] = states[nextEpoch].validators[getNextParties() - 1];\n                break;\n            }\n        }\n        delete states[nextEpoch].validators[getNextParties() - 1];\n        states[nextEpoch].validators.length--;\n    }\n\n    function voteChangeThreshold(uint threshold) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {\n            states[nextEpoch].threshold = threshold;\n        }\n    }\n\n    function voteStartKeygen() public voting currentValidator {\n        if (tryVote(Vote.START_KEYGEN)) {\n            status = Status.KEYGEN;\n\n            emit NewEpoch(epoch, nextEpoch);\n        }\n    }\n\n    function voteCancelKeygen() public keygen currentValidator {\n        if (tryVote(Vote.CANCEL_KEYGEN)) {\n            status = Status.VOTING;\n\n            emit NewEpochCancelled(nextEpoch);\n        }\n    }\n\n    function tryVote(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, address addr) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, uint num) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));\n        return putVote(vote);\n    }\n\n    function tryConfirm(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putConfirm(vote);\n    }\n\n    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));\n        return putConfirm(vote);\n    }\n\n    function putVote(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Voted already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function putConfirm(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Confirmed already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getNextThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function personalizeVote(bytes32 vote) private view returns (bytes32) {\n        return keccak256(abi.encodePacked(vote, msg.sender));\n    }\n}\n",
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-                              "id": 1100,
-                              "name": "vote",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 1068,
-                              "src": "9406:4:0",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_bytes32",
-                                "typeString": "bytes32"
-                              }
-                            },
-                            "isConstant": false,
-                            "isLValue": true,
-                            "isPure": false,
-                            "lValueRequested": true,
-                            "nodeType": "IndexAccess",
-                            "src": "9395:16:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_uint256",
-                              "typeString": "uint256"
-                            }
-                          },
-                          "nodeType": "Assignment",
-                          "operator": "=",
-                          "rightHandSide": {
-                            "argumentTypes": null,
-                            "commonType": {
-                              "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819968_by_1",
-                              "typeString": "int_const 5789...(69 digits omitted)...9968"
-                            },
-                            "id": 1104,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": true,
-                            "lValueRequested": false,
-                            "leftExpression": {
-                              "argumentTypes": null,
-                              "hexValue": "32",
-                              "id": 1102,
-                              "isConstant": false,
-                              "isLValue": false,
-                              "isPure": true,
-                              "kind": "number",
-                              "lValueRequested": false,
-                              "nodeType": "Literal",
-                              "src": "9414:1:0",
-                              "subdenomination": null,
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_rational_2_by_1",
-                                "typeString": "int_const 2"
-                              },
-                              "value": "2"
-                            },
-                            "nodeType": "BinaryOperation",
-                            "operator": "**",
-                            "rightExpression": {
-                              "argumentTypes": null,
-                              "hexValue": "323535",
-                              "id": 1103,
-                              "isConstant": false,
-                              "isLValue": false,
-                              "isPure": true,
-                              "kind": "number",
-                              "lValueRequested": false,
-                              "nodeType": "Literal",
-                              "src": "9419:3:0",
-                              "subdenomination": null,
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_rational_255_by_1",
-                                "typeString": "int_const 255"
-                              },
-                              "value": "255"
-                            },
-                            "src": "9414:8:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819968_by_1",
-                              "typeString": "int_const 5789...(69 digits omitted)...9968"
-                            }
-                          },
-                          "src": "9395:27:0",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_uint256",
-                            "typeString": "uint256"
-                          }
-                        },
-                        "id": 1106,
-                        "nodeType": "ExpressionStatement",
-                        "src": "9395:27:0"
-                      },
-                      {
-                        "expression": {
-                          "argumentTypes": null,
-                          "hexValue": "74727565",
-                          "id": 1107,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": true,
-                          "kind": "bool",
-                          "lValueRequested": false,
-                          "nodeType": "Literal",
-                          "src": "9443:4:0",
-                          "subdenomination": null,
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_bool",
-                            "typeString": "bool"
-                          },
-                          "value": "true"
-                        },
-                        "functionReturnParameters": 1072,
-                        "id": 1108,
-                        "nodeType": "Return",
-                        "src": "9436:11:0"
-                      }
-                    ]
-                  }
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 1120,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "putConfirm",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 1069,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1068,
-                  "name": "vote",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1120,
-                  "src": "9139:12:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1067,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "9139:7:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "9138:14:0"
-            },
-            "returnParameters": {
-              "id": 1072,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1071,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1120,
-                  "src": "9170:4:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 1070,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "9170:4:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "9169:6:0"
-            },
-            "scope": 1138,
-            "src": "9119:420:0",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "private"
-          },
-          {
-            "body": {
-              "id": 1136,
-              "nodeType": "Block",
-              "src": "9615:69:0",
-              "statements": [
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "arguments": [
-                          {
-                            "argumentTypes": null,
-                            "id": 1130,
-                            "name": "vote",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 1122,
-                            "src": "9659:4:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            }
-                          },
-                          {
-                            "argumentTypes": null,
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 1131,
-                              "name": "msg",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 12829,
-                              "src": "9665:3:0",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_magic_message",
-                                "typeString": "msg"
-                              }
-                            },
-                            "id": 1132,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": false,
-                            "lValueRequested": false,
-                            "memberName": "sender",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": null,
-                            "src": "9665:10:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          }
-                        ],
-                        "expression": {
-                          "argumentTypes": [
-                            {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            },
-                            {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": null,
-                            "id": 1128,
-                            "name": "abi",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 12816,
-                            "src": "9642:3:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_magic_abi",
-                              "typeString": "abi"
-                            }
-                          },
-                          "id": 1129,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": true,
-                          "lValueRequested": false,
-                          "memberName": "encodePacked",
-                          "nodeType": "MemberAccess",
-                          "referencedDeclaration": null,
-                          "src": "9642:16:0",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
-                            "typeString": "function () pure returns (bytes memory)"
-                          }
-                        },
-                        "id": 1133,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": false,
-                        "kind": "functionCall",
-                        "lValueRequested": false,
-                        "names": [],
-                        "nodeType": "FunctionCall",
-                        "src": "9642:34:0",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "id": 1127,
-                      "name": "keccak256",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 12823,
-                      "src": "9632:9:0",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
-                        "typeString": "function (bytes memory) pure returns (bytes32)"
-                      }
-                    },
-                    "id": 1134,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "9632:45:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "functionReturnParameters": 1126,
-                  "id": 1135,
-                  "nodeType": "Return",
-                  "src": "9625:52:0"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 1137,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "personalizeVote",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 1123,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1122,
-                  "name": "vote",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1137,
-                  "src": "9570:12:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1121,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
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-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "9569:14:0"
-            },
-            "returnParameters": {
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-              "nodeType": "ParameterList",
-              "parameters": [
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-                  "id": 1125,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1137,
-                  "src": "9606:7:0",
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-                  "visibility": "internal"
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-        "src": "93:9593:0"
-      }
-    ],
-    "src": "0:9687:0"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {
-    "44": {
-      "events": {
-        "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpoch",
-          "type": "event",
-          "signature": "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609"
-        },
-        "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpochCancelled",
-          "type": "event",
-          "signature": "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a"
-        },
-        "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewFundsTransfer",
-          "type": "event",
-          "signature": "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b"
-        },
-        "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "x",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "y",
-              "type": "uint256"
-            }
-          ],
-          "name": "EpochStart",
-          "type": "event",
-          "signature": "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c"
-        },
-        "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "value",
-              "type": "uint256"
-            }
-          ],
-          "name": "ExchangeRequest",
-          "type": "event",
-          "signature": "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e"
-        }
-      },
-      "links": {},
-      "address": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
-      "transactionHash": "0x6235a54e4ed6f582e79b17c216471dba7a35d27b2ee4f2c3e4ce2326b5d5c8c5"
-    }
-  },
-  "schemaVersion": "3.0.16",
-  "updatedAt": "2019-10-09T13:30:27.734Z",
-  "devdoc": {
-    "methods": {}
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/test-services/ethereumSend/Dockerfile b/src/test-services/ethereumSend/Dockerfile
index 80808a1..15d2e34 100644
--- a/src/test-services/ethereumSend/Dockerfile
+++ b/src/test-services/ethereumSend/Dockerfile
@@ -6,6 +6,6 @@ COPY package.json /test/
 
 RUN npm install
 
-COPY testEthereumSend.js IERC20.json Bridge.json /test/
+COPY testEthereumSend.js /test/
 
 ENTRYPOINT ["node", "testEthereumSend.js"]
diff --git a/src/test-services/ethereumSend/IERC20.json b/src/test-services/ethereumSend/IERC20.json
deleted file mode 100644
index 066d309..0000000
--- a/src/test-services/ethereumSend/IERC20.json
+++ /dev/null
@@ -1,1884 +0,0 @@
-{
-  "contractName": "IERC20",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Transfer",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Approval",
-      "type": "event"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "totalSupply",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "account",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "name": "spender",
-          "type": "address"
-        }
-      ],
-      "name": "allowance",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "sender",
-          "type": "address"
-        },
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
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-                  "typeName": {
-                    "id": 9814,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2178:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9817,
-                  "name": "recipient",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2194:17:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9816,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2194:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9819,
-                  "name": "amount",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2213:14:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9818,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2213:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2177:51:114"
-            },
-            "returnParameters": {
-              "id": 9823,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9822,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9824,
-                  "src": "2247:4:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 9821,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2247:4:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2246:6:114"
-            },
-            "scope": 9841,
-            "src": "2156:97:114",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "external"
-          },
-          {
-            "anonymous": false,
-            "documentation": "@dev Emitted when `value` tokens are moved from one account (`from`) to\nanother (`to`).\n     * Note that `value` may be zero.",
-            "id": 9832,
-            "name": "Transfer",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 9831,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9826,
-                  "indexed": true,
-                  "name": "from",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2437:20:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9825,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2437:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9828,
-                  "indexed": true,
-                  "name": "to",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2459:18:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9827,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2459:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9830,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9832,
-                  "src": "2479:13:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9829,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2479:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2436:57:114"
-            },
-            "src": "2422:72:114"
-          },
-          {
-            "anonymous": false,
-            "documentation": "@dev Emitted when the allowance of a `spender` for an `owner` is set by\na call to `approve`. `value` is the new allowance.",
-            "id": 9840,
-            "name": "Approval",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 9839,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 9834,
-                  "indexed": true,
-                  "name": "owner",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2668:21:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9833,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2668:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9836,
-                  "indexed": true,
-                  "name": "spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2691:23:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 9835,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2691:7:114",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 9838,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 9840,
-                  "src": "2716:13:114",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 9837,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2716:7:114",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2667:63:114"
-            },
-            "src": "2653:78:114"
-          }
-        ],
-        "scope": 9842,
-        "src": "176:2557:114"
-      }
-    ],
-    "src": "0:2734:114"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {},
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-07-17T07:17:15.653Z",
-  "devdoc": {
-    "details": "Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.",
-    "methods": {
-      "allowance(address,address)": {
-        "details": "Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called."
-      },
-      "approve(address,uint256)": {
-        "details": "Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event."
-      },
-      "balanceOf(address)": {
-        "details": "Returns the amount of tokens owned by `account`."
-      },
-      "totalSupply()": {
-        "details": "Returns the amount of tokens in existence."
-      },
-      "transfer(address,uint256)": {
-        "details": "Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      },
-      "transferFrom(address,address,uint256)": {
-        "details": "Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      }
-    }
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/test-services/ethereumSend/package.json b/src/test-services/ethereumSend/package.json
index db04192..3786f63 100644
--- a/src/test-services/ethereumSend/package.json
+++ b/src/test-services/ethereumSend/package.json
@@ -2,7 +2,6 @@
   "name": "ethereum-send",
   "version": "0.0.1",
   "dependencies": {
-  	"bignumber.js": "9.0.0",
-    "web3": "1.0.0-beta.55"
+    "ethers": "4.0.39"
   }
 }
diff --git a/src/test-services/ethereumSend/testEthereumSend.js b/src/test-services/ethereumSend/testEthereumSend.js
index 03ee123..4c3caa5 100644
--- a/src/test-services/ethereumSend/testEthereumSend.js
+++ b/src/test-services/ethereumSend/testEthereumSend.js
@@ -1,104 +1,59 @@
-const Web3 = require('web3')
-const BN = require('bignumber.js')
+const ethers = require('ethers')
 
 const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, HOME_PRIVATE_KEY, HOME_TOKEN_ADDRESS
 } = process.env
 
-const abiToken = require('./IERC20').abi
-const abiBridge = require('./Bridge').abi
+const tokenAbi = [
+  'function transfer(address to, uint256 value)',
+  'function approve(address to, uint256 value)'
+]
+const bridgeAbi = [
+  'function exchange(uint value)'
+]
 
 const PRIVATE_KEY = process.env.PRIVATE_KEY || HOME_PRIVATE_KEY
 
-const web3 = new Web3(HOME_RPC_URL, null, { transactionConfirmationBlocks: 1 })
-const token = new web3.eth.Contract(abiToken, HOME_TOKEN_ADDRESS)
-const bridge = new web3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
+const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+const wallet = new ethers.Wallet(PRIVATE_KEY, provider)
+const token = new ethers.Contract(HOME_TOKEN_ADDRESS, tokenAbi, wallet)
+const bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, wallet)
 
-const sender = web3.eth.accounts.privateKeyToAccount(`0x${PRIVATE_KEY}`).address
+const sender = wallet.address
 
 async function main() {
-  const HOME_CHAIN_ID = await web3.eth.net.getId()
-  const blockGasLimit = (await web3.eth.getBlock('latest', false)).gasLimit
-
   const to = process.argv[2]
 
-  const amount = parseInt(process.argv[3], 10)
-  let coins = process.argv[4]
+  const amount = process.argv[3]
+  let native = process.argv[4]
 
-  const txCount = await web3.eth.getTransactionCount(sender)
-
-  if (to === 'bridge' && amount !== 0) {
+  if (to === 'bridge' && amount !== '0') {
     console.log(`Transfer from ${sender} to ${HOME_BRIDGE_ADDRESS}, ${amount} tokens`)
 
-    const queryApprove = token.methods.approve(HOME_BRIDGE_ADDRESS, `0x${new BN(amount).multipliedBy(10 ** 18)
-      .toString(16)}`)
-    const txApprove = {
-      data: queryApprove.encodeABI(),
-      from: sender,
-      to: HOME_TOKEN_ADDRESS,
-      nonce: txCount,
-      chainId: HOME_CHAIN_ID
-    }
-    txApprove.gas = Math.min(Math.ceil(await queryApprove.estimateGas({
-      from: sender
-    }) * 1.5), blockGasLimit)
-    const signedTxApprove = await web3.eth.accounts.signTransaction(txApprove, PRIVATE_KEY)
-
-    const receiptApprove = await web3.eth.sendSignedTransaction(signedTxApprove.rawTransaction)
+    const txApprove = await token.approve(HOME_BRIDGE_ADDRESS, ethers.utils.parseEther(amount))
+    const receiptApprove = await txApprove.wait()
     console.log(`txHash approve: ${receiptApprove.transactionHash}`)
 
-    const queryExchange = bridge.methods.exchange(`0x${new BN(amount).multipliedBy(10 ** 18)
-      .toString(16)}`)
-    const txExchange = {
-      data: queryExchange.encodeABI(),
-      from: sender,
-      to: HOME_BRIDGE_ADDRESS,
-      nonce: txCount + 1,
-      chainId: HOME_CHAIN_ID
-    }
-    txExchange.gas = Math.min(Math.ceil(await queryExchange.estimateGas({
-      from: sender
-    }) * 1.5), blockGasLimit)
-    const signedTxExchange = await web3.eth.accounts.signTransaction(txExchange, PRIVATE_KEY)
-
-    const receiptExchange = await web3.eth.sendSignedTransaction(signedTxExchange.rawTransaction)
+    const txExchange = await bridge.exchange(ethers.utils.parseEther(amount))
+    const receiptExchange = await txExchange.wait()
     console.log(`txHash exchange: ${receiptExchange.transactionHash}`)
-  } else if (amount !== 0) {
+  } else if (amount !== '0') {
     console.log(`Transfer from ${sender} to ${to}, ${amount} tokens`)
 
-    const query = token.methods.transfer(to, `0x${new BN(amount).multipliedBy(10 ** 18)
-      .toString(16)}`)
-    const tx = {
-      data: query.encodeABI(),
-      from: sender,
-      to: HOME_TOKEN_ADDRESS,
-      nonce: txCount,
-      chainId: HOME_CHAIN_ID
-    }
-    tx.gas = Math.min(Math.ceil(await query.estimateGas({
-      from: sender
-    }) * 1.5), blockGasLimit)
-    const signedTx = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY)
-    const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
+    const tx = await token.transfer(to, ethers.utils.parseEther(amount))
+    const receipt = await tx.wait()
     console.log(`txHash transfer: ${receipt.transactionHash}`)
   }
 
-  if (coins) {
-    coins = parseFloat(coins)
-    console.log(`Transfer from ${sender} to ${to}, ${coins} coins`)
+  if (native) {
+    console.log(`Transfer from ${sender} to ${to}, ${native} coins`)
 
-    const tx = {
-      data: '0x',
-      from: sender,
+    const tx = await wallet.sendTransaction({
       to,
-      nonce: await web3.eth.getTransactionCount(sender),
-      chainId: HOME_CHAIN_ID,
-      value: web3.utils.toWei(new BN(coins).toString(), 'ether'),
-      gas: 21000
-    }
-    const signedTx = await web3.eth.accounts.signTransaction(tx, PRIVATE_KEY)
+      value: ethers.utils.parseEther(native)
+    })
 
-    const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
+    const receipt = await tx.wait()
     console.log(`txHash: ${receipt.transactionHash}`)
   }
 }
diff --git a/src/test-services/sidePrefund/Dockerfile b/src/test-services/sidePrefund/Dockerfile
index 15d2e34..fd40822 100644
--- a/src/test-services/sidePrefund/Dockerfile
+++ b/src/test-services/sidePrefund/Dockerfile
@@ -6,6 +6,6 @@ COPY package.json /test/
 
 RUN npm install
 
-COPY testEthereumSend.js /test/
+COPY testSidePrefund.js /test/
 
-ENTRYPOINT ["node", "testEthereumSend.js"]
+ENTRYPOINT ["node", "testSidePrefund.js"]
diff --git a/src/test-services/sidePrefund/package.json b/src/test-services/sidePrefund/package.json
index d115535..68cbe40 100644
--- a/src/test-services/sidePrefund/package.json
+++ b/src/test-services/sidePrefund/package.json
@@ -2,7 +2,6 @@
   "name": "side-prefund",
   "version": "0.0.1",
   "dependencies": {
-  	"bignumber.js": "9.0.0",
-    "web3": "1.0.0-beta.55"
+    "ethers": "4.0.39"
   }
 }
diff --git a/src/test-services/sidePrefund/testEthereumSend.js b/src/test-services/sidePrefund/testEthereumSend.js
deleted file mode 100644
index 9289e30..0000000
--- a/src/test-services/sidePrefund/testEthereumSend.js
+++ /dev/null
@@ -1,33 +0,0 @@
-const Web3 = require('web3')
-const BN = require('bignumber.js')
-
-const { SIDE_RPC_URL, SIDE_PRIVATE_KEY } = process.env
-
-const web3 = new Web3(SIDE_RPC_URL, null, { transactionConfirmationBlocks: 1 })
-
-const sender = web3.eth.accounts.privateKeyToAccount(`0x${SIDE_PRIVATE_KEY}`).address
-
-async function main() {
-  const SIDE_CHAIN_ID = await web3.eth.net.getId()
-
-  const to = process.argv[2]
-  const amount = parseFloat(process.argv[3])
-
-  console.log(`Transfer from ${sender} to ${to}, ${amount} eth`)
-
-  const txCoins = {
-    data: '0x',
-    from: sender,
-    to,
-    nonce: await web3.eth.getTransactionCount(sender),
-    chainId: SIDE_CHAIN_ID,
-    value: web3.utils.toWei(new BN(amount).toString(), 'ether'),
-    gas: 21000
-  }
-  const signedTx = await web3.eth.accounts.signTransaction(txCoins, SIDE_PRIVATE_KEY)
-
-  const receipt = await web3.eth.sendSignedTransaction(signedTx.rawTransaction)
-  console.log(`txHash: ${receipt.transactionHash}`)
-}
-
-main()
diff --git a/src/test-services/sidePrefund/testSidePrefund.js b/src/test-services/sidePrefund/testSidePrefund.js
new file mode 100644
index 0000000..0d5c50b
--- /dev/null
+++ b/src/test-services/sidePrefund/testSidePrefund.js
@@ -0,0 +1,26 @@
+const ethers = require('ethers')
+
+const { SIDE_RPC_URL, SIDE_PRIVATE_KEY } = process.env
+
+const provider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+const wallet = new ethers.Wallet(SIDE_PRIVATE_KEY, provider)
+
+const sender = wallet.address
+
+async function main() {
+  const to = process.argv[2]
+  const amount = process.argv[3]
+
+  console.log(`Transfer from ${sender} to ${to}, ${amount} eth`)
+
+  const txCoins = {
+    to,
+    value: ethers.utils.parseEther(amount)
+  }
+
+  const tx = await wallet.sendTransaction(txCoins)
+  const receipt = await tx.wait()
+  console.log(`txHash: ${receipt.transactionHash}`)
+}
+
+main()

From a36b0435ae05bef41af461746d1cfabb01fb9872 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 4 Nov 2019 18:07:35 +0300
Subject: [PATCH 061/129] Specified node versions in package.json's

---
 src/test-services/binanceBalance/package.json      | 3 +++
 src/test-services/binanceSend/package.json         | 3 +++
 src/test-services/ethereumBalance/package.json     | 3 +++
 src/test-services/ethereumSend/package.json        | 3 +++
 src/test-services/ethereumSend/testEthereumSend.js | 2 +-
 src/test-services/getAddresses/package.json        | 3 +++
 src/test-services/sidePrefund/package.json         | 3 +++
 7 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/test-services/binanceBalance/package.json b/src/test-services/binanceBalance/package.json
index 993e8f9..c1bf42e 100644
--- a/src/test-services/binanceBalance/package.json
+++ b/src/test-services/binanceBalance/package.json
@@ -3,5 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "axios": "0.19.0"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/test-services/binanceSend/package.json b/src/test-services/binanceSend/package.json
index a7d38dd..c09151a 100644
--- a/src/test-services/binanceSend/package.json
+++ b/src/test-services/binanceSend/package.json
@@ -3,5 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "@binance-chain/javascript-sdk": "2.14.4"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/test-services/ethereumBalance/package.json b/src/test-services/ethereumBalance/package.json
index f593cf6..6865e58 100644
--- a/src/test-services/ethereumBalance/package.json
+++ b/src/test-services/ethereumBalance/package.json
@@ -4,5 +4,8 @@
   "dependencies": {
     "ethers": "4.0.39",
     "bignumber.js": "9.0.0"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/test-services/ethereumSend/package.json b/src/test-services/ethereumSend/package.json
index 3786f63..55e8eb7 100644
--- a/src/test-services/ethereumSend/package.json
+++ b/src/test-services/ethereumSend/package.json
@@ -3,5 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "ethers": "4.0.39"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/test-services/ethereumSend/testEthereumSend.js b/src/test-services/ethereumSend/testEthereumSend.js
index 4c3caa5..76f0468 100644
--- a/src/test-services/ethereumSend/testEthereumSend.js
+++ b/src/test-services/ethereumSend/testEthereumSend.js
@@ -25,7 +25,7 @@ async function main() {
   const to = process.argv[2]
 
   const amount = process.argv[3]
-  let native = process.argv[4]
+  const native = process.argv[4]
 
   if (to === 'bridge' && amount !== '0') {
     console.log(`Transfer from ${sender} to ${HOME_BRIDGE_ADDRESS}, ${amount} tokens`)
diff --git a/src/test-services/getAddresses/package.json b/src/test-services/getAddresses/package.json
index de27143..edcb0cf 100644
--- a/src/test-services/getAddresses/package.json
+++ b/src/test-services/getAddresses/package.json
@@ -4,5 +4,8 @@
   "dependencies": {
     "ethers": "4.0.37",
     "bech32": "1.1.3"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }
diff --git a/src/test-services/sidePrefund/package.json b/src/test-services/sidePrefund/package.json
index 68cbe40..371f08f 100644
--- a/src/test-services/sidePrefund/package.json
+++ b/src/test-services/sidePrefund/package.json
@@ -3,5 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "ethers": "4.0.39"
+  },
+  "engines": {
+    "node": ">=10.6.0"
   }
 }

From 19e42d90ce0b60b1471161fb35be94195d692982 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 4 Nov 2019 20:54:02 +0300
Subject: [PATCH 062/129] Moved proxy totally on ethers js

---
 src/oracle/proxy/Bridge.json   | 35243 -------------------------------
 src/oracle/proxy/Dockerfile    |     1 -
 src/oracle/proxy/IERC20.json   |  1884 --
 src/oracle/proxy/SharedDB.json |  6274 ------
 src/oracle/proxy/index.js      |   173 +-
 src/oracle/proxy/package.json  |     1 -
 src/oracle/proxy/sendTx.js     |    30 +-
 7 files changed, 116 insertions(+), 43490 deletions(-)
 delete mode 100644 src/oracle/proxy/Bridge.json
 delete mode 100644 src/oracle/proxy/IERC20.json
 delete mode 100644 src/oracle/proxy/SharedDB.json

diff --git a/src/oracle/proxy/Bridge.json b/src/oracle/proxy/Bridge.json
deleted file mode 100644
index 9eba79e..0000000
--- a/src/oracle/proxy/Bridge.json
+++ /dev/null
@@ -1,35243 +0,0 @@
-{
-  "contractName": "Bridge",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "status",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint8"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "usedRange",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "votes",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbTransfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "tokenContract",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "epoch",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "votesCount",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "nextEpoch",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbTransferCount",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "inputs": [
-        {
-          "name": "threshold",
-          "type": "uint256"
-        },
-        {
-          "name": "validators",
-          "type": "address[]"
-        },
-        {
-          "name": "_tokenContract",
-          "type": "address"
-        },
-        {
-          "name": "limits",
-          "type": "uint256[2]"
-        },
-        {
-          "name": "rangeSize",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "constructor"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "nonce",
-          "type": "uint256"
-        }
-      ],
-      "name": "ExchangeRequest",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "oldEpoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": true,
-          "name": "newEpoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewEpoch",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewEpochCancelled",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "oldEpoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": true,
-          "name": "newEpoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "NewFundsTransfer",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "epoch",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "x",
-          "type": "uint256"
-        },
-        {
-          "indexed": false,
-          "name": "y",
-          "type": "uint256"
-        }
-      ],
-      "name": "EpochStart",
-      "type": "event"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "exchange",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "x",
-          "type": "uint256"
-        },
-        {
-          "name": "y",
-          "type": "uint256"
-        }
-      ],
-      "name": "confirmKeygen",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "confirmFundsTransfer",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getNextParties",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getParties",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "_epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "getParties",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getNextThreshold",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getThreshold",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "_epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "getThreshold",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getStartBlock",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "_epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "getStartBlock",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getNextRangeSize",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "_epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "getRangeSize",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getRangeSize",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "_epoch",
-          "type": "uint256"
-        }
-      ],
-      "name": "getNonce",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getNonce",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getX",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getY",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getPartyId",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "a",
-          "type": "address"
-        }
-      ],
-      "name": "getNextPartyId",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getValidators",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "getNextValidators",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address[]"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "startVoting",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "validator",
-          "type": "address"
-        }
-      ],
-      "name": "voteAddValidator",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "validator",
-          "type": "address"
-        }
-      ],
-      "name": "voteRemoveValidator",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "threshold",
-          "type": "uint256"
-        }
-      ],
-      "name": "voteChangeThreshold",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "rangeSize",
-          "type": "uint256"
-        }
-      ],
-      "name": "voteChangeRangeSize",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "voteStartKeygen",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [],
-      "name": "voteCancelKeygen",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
-  "metadata": 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ress\"}],\"name\":\"voteRemoveValidator\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getStartBlock\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"x\",\"type\":\"uint256\"},{\"name\":\"y\",\"type\":\"uint256\"}],\"name\":\"confirmKeygen\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getParties\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"votesCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"nextEpoch\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getValidators\",\"outputs\":[{\"name\":\"\",\"type\":\"address[]\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getNextRangeSize\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_epoch\",\"type\":\"uint256\"}],\"name\":\"getRangeSize\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"threshold\",\"type\":\"uint256\"}],\"name\":\"voteChangeThreshold\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getNonce\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"dbTransferCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"confirmFundsTransfer\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getThreshold\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"name\":\"threshold\",\"type\":\"uint256\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"_tokenContract\",\"type\":\"address\"},{\"name\":\"limits\",\"type\":\"uint256[2]\"},{\"name\":\"rangeSize\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"nonce\",\"type\":\"uint256\"}],\"name\":\"ExchangeRequest\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"oldEpoch\",\"type\":\"uint256\"},{\"indexed\":true,\"name\":\"newEpoch\",\"type\":\"uint256\"}],\"name\":\"NewEpoch\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"epoch\",\"type\":\"uint256\"}],\"name\":\"NewEpochCancelled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"oldEpoch\",\"type\":\"uint256\"},{\"indexed\":true,\"name\":\"newEpoch\",\"type\":\"uint256\"}],\"name\":\"NewFundsTransfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"epoch\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"x\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"y\",\"type\":\"uint256\"}],\"name\":\"EpochStart\",\"type\":\"event\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/Bridge.sol\":\"Bridge\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/Bridge.sol\":{\"keccak256\":\"0xedcf62b24f2b47b0e83af55ca6471e82e301f8287aa78e7c41bbca2d3ddc4155\",\"urls\":[\"bzzr://84b325be5714e21d85966ce976f9996d2f7d2305b467c191d37f6e91bb1901fb\",\"dweb:/ipfs/QmY1RVRv3H9E9T2VwmSdyKxAfQFMd7t9yYjcVFVpox9Lf8\"]},\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\",\"dweb:/ipfs/QmP5NaEwZthQeM2ESz4WTT3osrP7jhbvu7ocbttBi2JAw6\"]}},\"version\":1}",
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-  "source": "pragma solidity ^0.5.0;\n\nimport './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';\n\ncontract Bridge {\n    event ExchangeRequest(uint value, uint nonce);\n    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);\n    event NewEpochCancelled(uint indexed epoch);\n    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);\n    event EpochStart(uint indexed epoch, uint x, uint y);\n\n    struct State {\n        address[] validators;\n        uint threshold;\n        uint rangeSize;\n        uint startBlock;\n        uint nonce;\n        uint x;\n        uint y;\n    }\n\n    enum Status {\n        READY, // bridge is in ready to perform operations\n        VOTING, // voting for changing in next epoch, but still ready\n        KEYGEN, //keygen, can be cancelled\n        FUNDS_TRANSFER // funds transfer, cannot be cancelled\n    }\n\n    enum Vote {\n        CONFIRM_KEYGEN,\n        CONFIRM_FUNDS_TRANSFER,\n        START_VOTING,\n        ADD_VALIDATOR,\n        REMOVE_VALIDATOR,\n        CHANGE_THRESHOLD,\n        CHANGE_RANGE_SIZE,\n        START_KEYGEN,\n        CANCEL_KEYGEN,\n        TRANSFER\n    }\n\n    mapping(uint => State) states;\n\n    mapping(bytes32 => uint) public dbTransferCount;\n    mapping(bytes32 => bool) public dbTransfer;\n    mapping(bytes32 => uint) public votesCount;\n    mapping(bytes32 => bool) public votes;\n    mapping(bytes32 => bool) public usedRange;\n\n    Status public status;\n\n    uint public epoch;\n    uint public nextEpoch;\n\n    uint minTxLimit;\n    uint maxTxLimit;\n\n    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {\n        require(validators.length > 0);\n        require(threshold < validators.length);\n\n        tokenContract = IERC20(_tokenContract);\n\n        epoch = 0;\n        status = Status.KEYGEN;\n        nextEpoch = 1;\n\n        states[nextEpoch] = State(validators, threshold, rangeSize, 0, uint(-1), 0, 0);\n\n        minTxLimit = limits[0];\n        maxTxLimit = limits[1];\n\n        emit NewEpoch(0, 1);\n    }\n\n    IERC20 public tokenContract;\n\n    modifier ready {\n        require(status == Status.READY, \"Not in ready state\");\n        _;\n    }\n\n    modifier readyOrVoting {\n        require(status == Status.READY || status == Status.VOTING, \"Not in ready or voting state\");\n        _;\n    }\n\n    modifier voting {\n        require(status == Status.VOTING, \"Not in voting state\");\n        _;\n    }\n\n    modifier keygen {\n        require(status == Status.KEYGEN, \"Not in keygen state\");\n        _;\n    }\n\n    modifier fundsTransfer {\n        require(status == Status.FUNDS_TRANSFER, \"Not in funds transfer state\");\n        _;\n    }\n\n    modifier currentValidator {\n        require(getPartyId() != 0, \"Not a current validator\");\n        _;\n    }\n\n    function exchange(uint value) public ready {\n        require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);\n\n        uint txRange = (block.number - getStartBlock()) / getRangeSize();\n        if (!usedRange[keccak256(abi.encodePacked(txRange, epoch))]) {\n            usedRange[keccak256(abi.encodePacked(txRange, epoch))] = true;\n            states[epoch].nonce++;\n        }\n\n        tokenContract.transferFrom(msg.sender, address(this), value);\n        emit ExchangeRequest(value, getNonce());\n    }\n\n    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {\n        if (tryVote(Vote.TRANSFER, hash, to, value)) {\n            tokenContract.transfer(to, value);\n        }\n    }\n\n    function confirmKeygen(uint x, uint y) public keygen {\n        require(getNextPartyId(msg.sender) != 0, \"Not a next validator\");\n\n        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {\n            states[nextEpoch].x = x;\n            states[nextEpoch].y = y;\n            if (nextEpoch == 1) {\n                status = Status.READY;\n                states[nextEpoch].startBlock = block.number;\n                states[nextEpoch].nonce = uint(-1);\n                epoch = nextEpoch;\n                emit EpochStart(epoch, x, y);\n            }\n            else {\n                status = Status.FUNDS_TRANSFER;\n                emit NewFundsTransfer(epoch, nextEpoch);\n            }\n        }\n    }\n\n    function confirmFundsTransfer() public fundsTransfer currentValidator {\n        require(epoch > 0, \"First epoch does not need funds transfer\");\n\n        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {\n            status = Status.READY;\n            states[nextEpoch].startBlock = block.number;\n            states[nextEpoch].nonce = uint(-1);\n            epoch = nextEpoch;\n            emit EpochStart(epoch, getX(), getY());\n        }\n    }\n\n    function getParties() view public returns (uint) {\n        return getParties(epoch);\n    }\n\n    function getNextParties() view public returns (uint) {\n        return getParties(nextEpoch);\n    }\n\n    function getParties(uint _epoch) view public returns (uint) {\n        return states[_epoch].validators.length;\n    }\n\n    function getThreshold() view public returns (uint) {\n        return getThreshold(epoch);\n    }\n\n    function getNextThreshold() view public returns (uint) {\n        return getThreshold(nextEpoch);\n    }\n\n    function getThreshold(uint _epoch) view public returns (uint) {\n        return states[_epoch].threshold;\n    }\n\n    function getStartBlock() view public returns (uint) {\n        return getStartBlock(epoch);\n    }\n\n    function getStartBlock(uint _epoch) view public returns (uint) {\n        return states[_epoch].startBlock;\n    }\n\n    function getRangeSize() view public returns (uint) {\n        return getRangeSize(epoch);\n    }\n\n    function getNextRangeSize() view public returns (uint) {\n        return getRangeSize(nextEpoch);\n    }\n\n    function getRangeSize(uint _epoch) view public returns (uint) {\n        return states[_epoch].rangeSize;\n    }\n\n    function getNonce() view public returns (uint) {\n        return getNonce(epoch);\n    }\n\n    function getNonce(uint _epoch) view public returns (uint) {\n        return states[_epoch].nonce;\n    }\n\n    function getX() view public returns (uint) {\n        return states[epoch].x;\n    }\n\n    function getY() view public returns (uint) {\n        return states[epoch].y;\n    }\n\n    function getPartyId() view public returns (uint) {\n        address[] memory validators = getValidators();\n        for (uint i = 0; i < getParties(); i++) {\n            if (validators[i] == msg.sender)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getNextPartyId(address a) view public returns (uint) {\n        address[] memory validators = getNextValidators();\n        for (uint i = 0; i < getNextParties(); i++) {\n            if (validators[i] == a)\n                return i + 1;\n        }\n        return 0;\n    }\n\n    function getValidators() view public returns (address[] memory) {\n        return states[epoch].validators;\n    }\n\n    function getNextValidators() view public returns (address[] memory) {\n        return states[nextEpoch].validators;\n    }\n\n    function startVoting() public readyOrVoting currentValidator {\n        if (tryVote(Vote.START_VOTING)) {\n            nextEpoch++;\n            status = Status.VOTING;\n            states[nextEpoch].threshold = getThreshold();\n            states[nextEpoch].validators = getValidators();\n            states[nextEpoch].rangeSize = getRangeSize();\n        }\n    }\n\n    function voteAddValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) == 0, \"Already a validator\");\n\n        if (tryVote(Vote.ADD_VALIDATOR, validator)) {\n            states[nextEpoch].validators.push(validator);\n        }\n    }\n\n    function voteRemoveValidator(address validator) public voting currentValidator {\n        require(getNextPartyId(validator) != 0, \"Already not a validator\");\n\n        if (tryVote(Vote.REMOVE_VALIDATOR, validator)) {\n            _removeValidator(validator);\n        }\n    }\n\n    function _removeValidator(address validator) private {\n        for (uint i = 0; i < getNextParties() - 1; i++) {\n            if (states[nextEpoch].validators[i] == validator) {\n                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];\n                break;\n            }\n        }\n        delete states[nextEpoch].validators[getNextParties() - 1];\n        states[nextEpoch].validators.length--;\n    }\n\n    function voteChangeThreshold(uint threshold) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {\n            states[nextEpoch].threshold = threshold;\n        }\n    }\n\n    function voteChangeRangeSize(uint rangeSize) public voting currentValidator {\n        if (tryVote(Vote.CHANGE_RANGE_SIZE, rangeSize)) {\n            states[nextEpoch].rangeSize = rangeSize;\n        }\n    }\n\n    function voteStartKeygen() public voting currentValidator {\n        if (tryVote(Vote.START_KEYGEN)) {\n            status = Status.KEYGEN;\n\n            emit NewEpoch(epoch, nextEpoch);\n        }\n    }\n\n    function voteCancelKeygen() public keygen currentValidator {\n        if (tryVote(Vote.CANCEL_KEYGEN)) {\n            status = Status.VOTING;\n\n            emit NewEpochCancelled(nextEpoch);\n        }\n    }\n\n    function tryVote(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, address addr) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, uint num) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));\n        return putVote(vote);\n    }\n\n    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));\n        return putVote(vote);\n    }\n\n    function tryConfirm(Vote voteType) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));\n        return putConfirm(vote);\n    }\n\n    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {\n        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));\n        return putConfirm(vote);\n    }\n\n    function putVote(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Voted already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function putConfirm(bytes32 vote) private returns (bool) {\n        bytes32 personalVote = personalizeVote(vote);\n        require(!votes[personalVote], \"Confirmed already\");\n\n        votes[personalVote] = true;\n        if (votesCount[vote] == getNextThreshold()) {\n            votesCount[vote] = 2 ** 255;\n            return true;\n        } else {\n            votesCount[vote]++;\n            return false;\n        }\n    }\n\n    function personalizeVote(bytes32 vote) private view returns (bytes32) {\n        return keccak256(abi.encodePacked(vote, msg.sender));\n    }\n}\n",
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-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "10804:14:0"
-            },
-            "returnParameters": {
-              "id": 1274,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1273,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1322,
-                  "src": "10836:4:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bool",
-                    "typeString": "bool"
-                  },
-                  "typeName": {
-                    "id": 1272,
-                    "name": "bool",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "10836:4:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bool",
-                      "typeString": "bool"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "10835:6:0"
-            },
-            "scope": 1340,
-            "src": "10785:420:0",
-            "stateMutability": "nonpayable",
-            "superFunction": null,
-            "visibility": "private"
-          },
-          {
-            "body": {
-              "id": 1338,
-              "nodeType": "Block",
-              "src": "11281:69:0",
-              "statements": [
-                {
-                  "expression": {
-                    "argumentTypes": null,
-                    "arguments": [
-                      {
-                        "argumentTypes": null,
-                        "arguments": [
-                          {
-                            "argumentTypes": null,
-                            "id": 1332,
-                            "name": "vote",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 1324,
-                            "src": "11325:4:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            }
-                          },
-                          {
-                            "argumentTypes": null,
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 1333,
-                              "name": "msg",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 13088,
-                              "src": "11331:3:0",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_magic_message",
-                                "typeString": "msg"
-                              }
-                            },
-                            "id": 1334,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": false,
-                            "lValueRequested": false,
-                            "memberName": "sender",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": null,
-                            "src": "11331:10:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          }
-                        ],
-                        "expression": {
-                          "argumentTypes": [
-                            {
-                              "typeIdentifier": "t_bytes32",
-                              "typeString": "bytes32"
-                            },
-                            {
-                              "typeIdentifier": "t_address_payable",
-                              "typeString": "address payable"
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": null,
-                            "id": 1330,
-                            "name": "abi",
-                            "nodeType": "Identifier",
-                            "overloadedDeclarations": [],
-                            "referencedDeclaration": 13075,
-                            "src": "11308:3:0",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_magic_abi",
-                              "typeString": "abi"
-                            }
-                          },
-                          "id": 1331,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": true,
-                          "lValueRequested": false,
-                          "memberName": "encodePacked",
-                          "nodeType": "MemberAccess",
-                          "referencedDeclaration": null,
-                          "src": "11308:16:0",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
-                            "typeString": "function () pure returns (bytes memory)"
-                          }
-                        },
-                        "id": 1335,
-                        "isConstant": false,
-                        "isLValue": false,
-                        "isPure": false,
-                        "kind": "functionCall",
-                        "lValueRequested": false,
-                        "names": [],
-                        "nodeType": "FunctionCall",
-                        "src": "11308:34:0",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      }
-                    ],
-                    "expression": {
-                      "argumentTypes": [
-                        {
-                          "typeIdentifier": "t_bytes_memory_ptr",
-                          "typeString": "bytes memory"
-                        }
-                      ],
-                      "id": 1329,
-                      "name": "keccak256",
-                      "nodeType": "Identifier",
-                      "overloadedDeclarations": [],
-                      "referencedDeclaration": 13082,
-                      "src": "11298:9:0",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
-                        "typeString": "function (bytes memory) pure returns (bytes32)"
-                      }
-                    },
-                    "id": 1336,
-                    "isConstant": false,
-                    "isLValue": false,
-                    "isPure": false,
-                    "kind": "functionCall",
-                    "lValueRequested": false,
-                    "names": [],
-                    "nodeType": "FunctionCall",
-                    "src": "11298:45:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "functionReturnParameters": 1328,
-                  "id": 1337,
-                  "nodeType": "Return",
-                  "src": "11291:52:0"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 1339,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "personalizeVote",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 1325,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1324,
-                  "name": "vote",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1339,
-                  "src": "11236:12:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1323,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "11236:7:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "11235:14:0"
-            },
-            "returnParameters": {
-              "id": 1328,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1327,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1339,
-                  "src": "11272:7:0",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1326,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "11272:7:0",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "11271:9:0"
-            },
-            "scope": 1340,
-            "src": "11211:139:0",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "private"
-          }
-        ],
-        "scope": 1341,
-        "src": "93:11259:0"
-      }
-    ],
-    "src": "0:11353:0"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {
-    "44": {
-      "events": {
-        "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpoch",
-          "type": "event",
-          "signature": "0x3ef85928df9ae51bdb3eb4c00ec73b92b82307f319ac1b029de14796a0972609"
-        },
-        "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewEpochCancelled",
-          "type": "event",
-          "signature": "0xddbb65cfe1ae4aec03cef0f9667c6d7ba3740927d0c60f4dd4d7104cc31d180a"
-        },
-        "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "oldEpoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": true,
-              "name": "newEpoch",
-              "type": "uint256"
-            }
-          ],
-          "name": "NewFundsTransfer",
-          "type": "event",
-          "signature": "0xf4735b85cc98f9a712832825ecab4cfb1649d658f9a73c57a00ea7dde735c79b"
-        },
-        "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": true,
-              "name": "epoch",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "x",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "y",
-              "type": "uint256"
-            }
-          ],
-          "name": "EpochStart",
-          "type": "event",
-          "signature": "0xc33272939f066c227e913a4b3434d860794f185c551685c29451a3a38b9b259c"
-        },
-        "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "value",
-              "type": "uint256"
-            }
-          ],
-          "name": "ExchangeRequest",
-          "type": "event",
-          "signature": "0x62e1f484b3909b2c013673bad76a9f14b010600ba983f11ad26e83082883570e"
-        },
-        "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02": {
-          "anonymous": false,
-          "inputs": [
-            {
-              "indexed": false,
-              "name": "value",
-              "type": "uint256"
-            },
-            {
-              "indexed": false,
-              "name": "nonce",
-              "type": "uint256"
-            }
-          ],
-          "name": "ExchangeRequest",
-          "type": "event",
-          "signature": "0x9273b6f22cee1ef3d7cdc2a9c031936003526bae368886259511f7dd40044b02"
-        }
-      },
-      "links": {},
-      "address": "0x44c158FE850821ae69DaF37AADF5c539e9d0025B",
-      "transactionHash": "0x912e1b3c5341609e1d0c0cd5d81ff6b7d9b2e8f497bd393ea91af1a4038cba78"
-    }
-  },
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-10-28T13:22:54.868Z",
-  "devdoc": {
-    "methods": {}
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/oracle/proxy/Dockerfile b/src/oracle/proxy/Dockerfile
index 431811d..e36f80b 100644
--- a/src/oracle/proxy/Dockerfile
+++ b/src/oracle/proxy/Dockerfile
@@ -7,6 +7,5 @@ COPY ./proxy/package.json /proxy/
 RUN npm install
 
 COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /proxy/
-COPY ./proxy/Bridge.json ./proxy/IERC20.json ./proxy/SharedDB.json /proxy/contracts_data/
 
 ENTRYPOINT ["node", "index.js"]
diff --git a/src/oracle/proxy/IERC20.json b/src/oracle/proxy/IERC20.json
deleted file mode 100644
index 38bf614..0000000
--- a/src/oracle/proxy/IERC20.json
+++ /dev/null
@@ -1,1884 +0,0 @@
-{
-  "contractName": "IERC20",
-  "abi": [
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "to",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Transfer",
-      "type": "event"
-    },
-    {
-      "anonymous": false,
-      "inputs": [
-        {
-          "indexed": true,
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "indexed": true,
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "indexed": false,
-          "name": "value",
-          "type": "uint256"
-        }
-      ],
-      "name": "Approval",
-      "type": "event"
-    },
-    {
-      "constant": true,
-      "inputs": [],
-      "name": "totalSupply",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "account",
-          "type": "address"
-        }
-      ],
-      "name": "balanceOf",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transfer",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "owner",
-          "type": "address"
-        },
-        {
-          "name": "spender",
-          "type": "address"
-        }
-      ],
-      "name": "allowance",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "spender",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "approve",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "sender",
-          "type": "address"
-        },
-        {
-          "name": "recipient",
-          "type": "address"
-        },
-        {
-          "name": "amount",
-          "type": "uint256"
-        }
-      ],
-      "name": "transferFrom",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bool"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    }
-  ],
-  "metadata": "{\"compiler\":{\"version\":\"0.5.9+commit.e560f70d\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"sender\",\"type\":\"address\"},{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}],\"devdoc\":{\"details\":\"Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.\",\"methods\":{\"allowance(address,address)\":{\"details\":\"Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called.\"},\"approve(address,uint256)\":{\"details\":\"Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event.\"},\"balanceOf(address)\":{\"details\":\"Returns the amount of tokens owned by `account`.\"},\"totalSupply()\":{\"details\":\"Returns the amount of tokens in existence.\"},\"transfer(address,uint256)\":{\"details\":\"Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":\"IERC20\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\",\"dweb:/ipfs/QmP5NaEwZthQeM2ESz4WTT3osrP7jhbvu7ocbttBi2JAw6\"]}},\"version\":1}",
-  "bytecode": "0x",
-  "deployedBytecode": "0x",
-  "sourceMap": "",
-  "deployedSourceMap": "",
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-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8678,
-                  "indexed": true,
-                  "name": "to",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8682,
-                  "src": "2459:18:113",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8677,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2459:7:113",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8680,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8682,
-                  "src": "2479:13:113",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 8679,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2479:7:113",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2436:57:113"
-            },
-            "src": "2422:72:113"
-          },
-          {
-            "anonymous": false,
-            "documentation": "@dev Emitted when the allowance of a `spender` for an `owner` is set by\na call to `approve`. `value` is the new allowance.",
-            "id": 8690,
-            "name": "Approval",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 8689,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 8684,
-                  "indexed": true,
-                  "name": "owner",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8690,
-                  "src": "2668:21:113",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8683,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2668:7:113",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8686,
-                  "indexed": true,
-                  "name": "spender",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8690,
-                  "src": "2691:23:113",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 8685,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2691:7:113",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 8688,
-                  "indexed": false,
-                  "name": "value",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 8690,
-                  "src": "2716:13:113",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 8687,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "2716:7:113",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "2667:63:113"
-            },
-            "src": "2653:78:113"
-          }
-        ],
-        "scope": 8692,
-        "src": "176:2557:113"
-      }
-    ],
-    "src": "0:2734:113"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {},
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-09-17T15:35:53.888Z",
-  "devdoc": {
-    "details": "Interface of the ERC20 standard as defined in the EIP. Does not include the optional functions; to access them see `ERC20Detailed`.",
-    "methods": {
-      "allowance(address,address)": {
-        "details": "Returns the remaining number of tokens that `spender` will be allowed to spend on behalf of `owner` through `transferFrom`. This is zero by default.     * This value changes when `approve` or `transferFrom` are called."
-      },
-      "approve(address,uint256)": {
-        "details": "Sets `amount` as the allowance of `spender` over the caller's tokens.     * Returns a boolean value indicating whether the operation succeeded.     * > Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729     * Emits an `Approval` event."
-      },
-      "balanceOf(address)": {
-        "details": "Returns the amount of tokens owned by `account`."
-      },
-      "totalSupply()": {
-        "details": "Returns the amount of tokens in existence."
-      },
-      "transfer(address,uint256)": {
-        "details": "Moves `amount` tokens from the caller's account to `recipient`.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      },
-      "transferFrom(address,address,uint256)": {
-        "details": "Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount` is then deducted from the caller's allowance.     * Returns a boolean value indicating whether the operation succeeded.     * Emits a `Transfer` event."
-      }
-    }
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/oracle/proxy/SharedDB.json b/src/oracle/proxy/SharedDB.json
deleted file mode 100644
index 9e3494b..0000000
--- a/src/oracle/proxy/SharedDB.json
+++ /dev/null
@@ -1,6274 +0,0 @@
-{
-  "contractName": "SharedDB",
-  "abi": [
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "dbSignups",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "signupsCount",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "",
-          "type": "bytes32"
-        }
-      ],
-      "name": "db",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        }
-      ],
-      "name": "signupSign",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "validators",
-          "type": "address[]"
-        },
-        {
-          "name": "validator",
-          "type": "address"
-        }
-      ],
-      "name": "getSignupNumber",
-      "outputs": [
-        {
-          "name": "",
-          "type": "uint256"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "validators",
-          "type": "address[]"
-        },
-        {
-          "name": "signupNumber",
-          "type": "uint256"
-        }
-      ],
-      "name": "getSignupAddress",
-      "outputs": [
-        {
-          "name": "",
-          "type": "address"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    },
-    {
-      "constant": false,
-      "inputs": [
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "key",
-          "type": "bytes32"
-        },
-        {
-          "name": "data",
-          "type": "bytes"
-        }
-      ],
-      "name": "setData",
-      "outputs": [],
-      "payable": false,
-      "stateMutability": "nonpayable",
-      "type": "function"
-    },
-    {
-      "constant": true,
-      "inputs": [
-        {
-          "name": "from",
-          "type": "address"
-        },
-        {
-          "name": "hash",
-          "type": "bytes32"
-        },
-        {
-          "name": "key",
-          "type": "bytes32"
-        }
-      ],
-      "name": "getData",
-      "outputs": [
-        {
-          "name": "",
-          "type": "bytes"
-        }
-      ],
-      "payable": false,
-      "stateMutability": "view",
-      "type": "function"
-    }
-  ],
-  "metadata": "{\"compiler\":{\"version\":\"0.5.9+commit.e560f70d\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"signupNumber\",\"type\":\"uint256\"}],\"name\":\"getSignupAddress\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"key\",\"type\":\"bytes32\"}],\"name\":\"getData\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"}],\"name\":\"signupSign\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"dbSignups\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"signupsCount\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"validators\",\"type\":\"address[]\"},{\"name\":\"validator\",\"type\":\"address\"}],\"name\":\"getSignupNumber\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"db\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"hash\",\"type\":\"bytes32\"},{\"name\":\"key\",\"type\":\"bytes32\"},{\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"setData\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/build/contracts/SharedDB.sol\":\"SharedDB\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":3},\"remappings\":[]},\"sources\":{\"/build/contracts/SharedDB.sol\":{\"keccak256\":\"0x94e823a0aa4d7aaca55e82121659cc162ce5ee7772b98e3d0c983b65ebabe22b\",\"urls\":[\"bzzr://ad1ac5702de081e8516595760054a0b4d8eaab39b75a002554ddb43ae738f37b\",\"dweb:/ipfs/QmRLrhNxxeoeJKpLpT2CakVxkmwuRQuvyVjZjF6cqKkz4f\"]}},\"version\":1}",
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-                              "referencedDeclaration": 262,
-                              "src": "1621:3:1",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_bytes32",
-                                "typeString": "bytes32"
-                              }
-                            }
-                          ],
-                          "expression": {
-                            "argumentTypes": [
-                              {
-                                "typeIdentifier": "t_address",
-                                "typeString": "address"
-                              },
-                              {
-                                "typeIdentifier": "t_bytes32",
-                                "typeString": "bytes32"
-                              },
-                              {
-                                "typeIdentifier": "t_bytes32",
-                                "typeString": "bytes32"
-                              }
-                            ],
-                            "expression": {
-                              "argumentTypes": null,
-                              "id": 269,
-                              "name": "abi",
-                              "nodeType": "Identifier",
-                              "overloadedDeclarations": [],
-                              "referencedDeclaration": 282,
-                              "src": "1592:3:1",
-                              "typeDescriptions": {
-                                "typeIdentifier": "t_magic_abi",
-                                "typeString": "abi"
-                              }
-                            },
-                            "id": 270,
-                            "isConstant": false,
-                            "isLValue": false,
-                            "isPure": true,
-                            "lValueRequested": false,
-                            "memberName": "encodePacked",
-                            "nodeType": "MemberAccess",
-                            "referencedDeclaration": null,
-                            "src": "1592:16:1",
-                            "typeDescriptions": {
-                              "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$",
-                              "typeString": "function () pure returns (bytes memory)"
-                            }
-                          },
-                          "id": 274,
-                          "isConstant": false,
-                          "isLValue": false,
-                          "isPure": false,
-                          "kind": "functionCall",
-                          "lValueRequested": false,
-                          "names": [],
-                          "nodeType": "FunctionCall",
-                          "src": "1592:33:1",
-                          "typeDescriptions": {
-                            "typeIdentifier": "t_bytes_memory_ptr",
-                            "typeString": "bytes memory"
-                          }
-                        }
-                      ],
-                      "expression": {
-                        "argumentTypes": [
-                          {
-                            "typeIdentifier": "t_bytes_memory_ptr",
-                            "typeString": "bytes memory"
-                          }
-                        ],
-                        "id": 268,
-                        "name": "keccak256",
-                        "nodeType": "Identifier",
-                        "overloadedDeclarations": [],
-                        "referencedDeclaration": 289,
-                        "src": "1582:9:1",
-                        "typeDescriptions": {
-                          "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
-                          "typeString": "function (bytes memory) pure returns (bytes32)"
-                        }
-                      },
-                      "id": 275,
-                      "isConstant": false,
-                      "isLValue": false,
-                      "isPure": false,
-                      "kind": "functionCall",
-                      "lValueRequested": false,
-                      "names": [],
-                      "nodeType": "FunctionCall",
-                      "src": "1582:44:1",
-                      "typeDescriptions": {
-                        "typeIdentifier": "t_bytes32",
-                        "typeString": "bytes32"
-                      }
-                    },
-                    "isConstant": false,
-                    "isLValue": true,
-                    "isPure": false,
-                    "lValueRequested": false,
-                    "nodeType": "IndexAccess",
-                    "src": "1579:48:1",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage",
-                      "typeString": "bytes storage ref"
-                    }
-                  },
-                  "functionReturnParameters": 266,
-                  "id": 277,
-                  "nodeType": "Return",
-                  "src": "1572:55:1"
-                }
-              ]
-            },
-            "documentation": null,
-            "id": 279,
-            "implemented": true,
-            "kind": "function",
-            "modifiers": [],
-            "name": "getData",
-            "nodeType": "FunctionDefinition",
-            "parameters": {
-              "id": 263,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 258,
-                  "name": "from",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 279,
-                  "src": "1486:12:1",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 257,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1486:7:1",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 260,
-                  "name": "hash",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 279,
-                  "src": "1500:12:1",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 259,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1500:7:1",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 262,
-                  "name": "key",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 279,
-                  "src": "1514:11:1",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 261,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1514:7:1",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1485:41:1"
-            },
-            "returnParameters": {
-              "id": 266,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 265,
-                  "name": "",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 279,
-                  "src": "1548:12:1",
-                  "stateVariable": false,
-                  "storageLocation": "memory",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes_memory_ptr",
-                    "typeString": "bytes"
-                  },
-                  "typeName": {
-                    "id": 264,
-                    "name": "bytes",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1548:5:1",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage_ptr",
-                      "typeString": "bytes"
-                    }
-                  },
-                  "value": null,
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1547:14:1"
-            },
-            "scope": 280,
-            "src": "1469:165:1",
-            "stateMutability": "view",
-            "superFunction": null,
-            "visibility": "public"
-          }
-        ],
-        "scope": 281,
-        "src": "25:1611:1"
-      }
-    ],
-    "src": "0:1637:1"
-  },
-  "compiler": {
-    "name": "solc",
-    "version": "0.5.9+commit.e560f70d.Emscripten.clang"
-  },
-  "networks": {
-    "33": {
-      "events": {},
-      "links": {},
-      "address": "0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc",
-      "transactionHash": "0xfc024dbdc05c6deb0bd921701809dec226f03100b24e7a91d8de4ccb76467f21"
-    }
-  },
-  "schemaVersion": "3.0.11",
-  "updatedAt": "2019-10-28T13:23:05.363Z",
-  "devdoc": {
-    "methods": {}
-  },
-  "userdoc": {
-    "methods": {}
-  }
-}
\ No newline at end of file
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index d520245..07dcfe8 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -1,9 +1,8 @@
 const express = require('express')
-const Web3 = require('web3')
 const AsyncLock = require('async-lock')
 const axios = require('axios')
 const BN = require('bignumber.js')
-const { utils } = require('ethers')
+const ethers = require('ethers')
 
 const encode = require('./encode')
 const decode = require('./decode')
@@ -15,16 +14,54 @@ const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS, VALIDATOR_PRIVATE_KEY,
   HOME_TOKEN_ADDRESS, FOREIGN_URL, FOREIGN_ASSET
 } = process.env
-const abiSharedDb = require('./contracts_data/SharedDB.json').abi
-const abiBridge = require('./contracts_data/Bridge.json').abi
-const abiToken = require('./contracts_data/IERC20.json').abi
 
-const homeWeb3 = new Web3(HOME_RPC_URL, null, { transactionConfirmationBlocks: 1 })
-const sideWeb3 = new Web3(SIDE_RPC_URL, null, { transactionConfirmationBlocks: 1 })
-const bridge = new homeWeb3.eth.Contract(abiBridge, HOME_BRIDGE_ADDRESS)
-const token = new homeWeb3.eth.Contract(abiToken, HOME_TOKEN_ADDRESS)
-const sharedDb = new sideWeb3.eth.Contract(abiSharedDb, SIDE_SHARED_DB_ADDRESS)
-const validatorAddress = homeWeb3.eth.accounts.privateKeyToAccount(`0x${VALIDATOR_PRIVATE_KEY}`).address
+const tokenAbi = [
+  'function balanceOf(address account) view returns (uint256)'
+]
+const bridgeAbi = [
+  'function getX() view returns (uint)',
+  'function getY() view returns (uint)',
+  'function epoch() view returns (uint)',
+  'function getRangeSize() view returns (uint)',
+  'function getNextRangeSize() view returns (uint)',
+  'function getStartBlock() view returns (uint)',
+  'function getNonce() view returns (uint)',
+  'function nextEpoch() view returns (uint)',
+  'function getThreshold() view returns (uint)',
+  'function getNextThreshold() view returns (uint)',
+  'function getValidators() view returns (address[])',
+  'function getNextValidators() view returns (address[])',
+  'function status() view returns (uint)',
+  'function votesCount(bytes32) view returns (uint)',
+  'function getNextPartyId(address a) view returns (uint)',
+  'function confirmKeygen(uint x, uint y)',
+  'function confirmFundsTransfer()',
+  'function startVoting()',
+  'function voteStartKeygen()',
+  'function voteCancelKeygen()',
+  'function voteAddValidator(address validator)',
+  'function voteRemoveValidator(address validator)',
+  'function voteChangeThreshold(uint threshold)',
+  'function transfer(bytes32 hash, address to, uint value)'
+]
+const sharedDbAbi = [
+  'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
+  'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
+  'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint)',
+  'function setData(bytes32 hash, bytes32 key, bytes data)',
+  'function signupSign(bytes32 hash)'
+]
+
+const homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+const sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+const homeWallet = new ethers.Wallet(VALIDATOR_PRIVATE_KEY, homeProvider)
+const sideWallet = new ethers.Wallet(VALIDATOR_PRIVATE_KEY, sideProvider)
+
+const token = new ethers.Contract(HOME_TOKEN_ADDRESS, tokenAbi, homeWallet)
+const bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeWallet)
+const sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideWallet)
+
+const validatorAddress = homeWallet.address
 
 const httpClient = axios.create({ baseURL: FOREIGN_URL })
 
@@ -42,8 +79,8 @@ app.use(express.urlencoded({ extended: true }))
 const votesProxyApp = express()
 
 async function main() {
-  homeValidatorNonce = await homeWeb3.eth.getTransactionCount(validatorAddress)
-  sideValidatorNonce = await sideWeb3.eth.getTransactionCount(validatorAddress)
+  homeValidatorNonce = await homeWallet.getTransactionCount()
+  sideValidatorNonce = await sideWallet.getTransactionCount()
 
   homeSender = await createSender(HOME_RPC_URL, VALIDATOR_PRIVATE_KEY)
   sideSender = await createSender(SIDE_RPC_URL, VALIDATOR_PRIVATE_KEY)
@@ -72,9 +109,8 @@ function Err(data) {
 function sideSendQuery(query) {
   return lock.acquire('home', async () => {
     logger.debug('Sending side query')
-    const encodedABI = query.encodeABI()
     const senderResponse = await sideSender({
-      data: encodedABI,
+      data: query,
       to: SIDE_SHARED_DB_ADDRESS,
       nonce: sideValidatorNonce
     })
@@ -88,9 +124,8 @@ function sideSendQuery(query) {
 function homeSendQuery(query) {
   return lock.acquire('home', async () => {
     logger.debug('Sending home query')
-    const encodedABI = query.encodeABI()
     const senderResponse = await homeSender({
-      data: encodedABI,
+      data: query,
       to: HOME_BRIDGE_ADDRESS,
       nonce: homeValidatorNonce
     })
@@ -107,22 +142,19 @@ async function get(req, res) {
   const uuid = req.body.key.third
   let from
   if (uuid.startsWith('k')) {
-    from = (await bridge.methods.getNextValidators()
-      .call())[parseInt(req.body.key.first, 10) - 1]
+    from = (await bridge.getNextValidators())[parseInt(req.body.key.first, 10) - 1]
   } else {
-    const validators = await bridge.methods.getValidators()
-      .call()
-    from = await sharedDb.methods.getSignupAddress(
+    const validators = await bridge.getValidators()
+    from = await sharedDb.getSignupAddress(
       uuid,
-      validators, parseInt(req.body.key.first, 10)
+      validators,
+      parseInt(req.body.key.first, 10)
     )
-      .call()
   }
   const to = Number(req.body.key.fourth) // 0 if empty
-  const key = homeWeb3.utils.sha3(`${round}_${to}`)
+  const key = ethers.utils.id(`${round}_${to}`)
 
-  const data = await sharedDb.methods.getData(from, sideWeb3.utils.sha3(uuid), key)
-    .call()
+  const data = await sharedDb.getData(from, ethers.utils.id(uuid), key)
 
   if (data.length > 2) {
     logger.trace(`Received encoded data: ${data}`)
@@ -144,13 +176,13 @@ async function set(req, res) {
   const round = req.body.key.second
   const uuid = req.body.key.third
   const to = Number(req.body.key.fourth)
-  const key = homeWeb3.utils.sha3(`${round}_${to}`)
+  const key = ethers.utils.id(`${round}_${to}`)
 
   logger.trace('Received data: %o', req.body.value)
   const encoded = encode(uuid[0] === 'k', round, req.body.value)
   logger.trace(`Encoded data: ${encoded.toString('hex')}`)
   logger.trace(`Received data: ${req.body.value.length} bytes, encoded data: ${encoded.length} bytes`)
-  const query = sharedDb.methods.setData(sideWeb3.utils.sha3(uuid), key, encoded)
+  const query = sharedDb.interface.functions.setData.encode([ethers.utils.id(uuid), key, encoded])
   await sideSendQuery(query)
 
   res.send(Ok(null))
@@ -159,8 +191,8 @@ async function set(req, res) {
 
 async function signupKeygen(req, res) {
   logger.debug('SignupKeygen call')
-  const epoch = (await bridge.methods.nextEpoch().call()).toNumber()
-  const partyId = (await bridge.methods.getNextPartyId(validatorAddress).call()).toNumber()
+  const epoch = (await bridge.nextEpoch()).toNumber()
+  const partyId = (await bridge.getNextPartyId(validatorAddress)).toNumber()
 
   if (partyId === 0) {
     res.send(Err({ message: 'Not a validator' }))
@@ -176,8 +208,8 @@ async function signupKeygen(req, res) {
 
 async function signupSign(req, res) {
   logger.debug('SignupSign call')
-  const hash = sideWeb3.utils.sha3(`0x${req.body.third}`)
-  const query = sharedDb.methods.signupSign(hash)
+  const hash = ethers.utils.id(req.body.third)
+  const query = sharedDb.interface.functions.signupSign.encode([hash])
   const { txHash } = await sideSendQuery(query)
   const receipt = await waitForReceipt(SIDE_RPC_URL, txHash)
 
@@ -191,9 +223,8 @@ async function signupSign(req, res) {
     return
   }
 
-  const validators = await bridge.methods.getValidators().call()
-  const id = (await sharedDb.methods.getSignupNumber(hash, validators, validatorAddress).call())
-    .toNumber()
+  const validators = await bridge.getValidators()
+  const id = (await sharedDb.getSignupNumber(hash, validators, validatorAddress)).toNumber()
 
   res.send(Ok({
     uuid: hash,
@@ -205,7 +236,7 @@ async function signupSign(req, res) {
 async function confirmKeygen(req, res) {
   logger.debug('Confirm keygen call')
   const { x, y } = req.body[5]
-  const query = bridge.methods.confirmKeygen(`0x${x}`, `0x${y}`)
+  const query = bridge.interface.functions.confirmKeygen.encode([`0x${x}`, `0x${y}`])
   await homeSendQuery(query)
   res.send()
   logger.debug('Confirm keygen end')
@@ -213,7 +244,7 @@ async function confirmKeygen(req, res) {
 
 async function confirmFundsTransfer(req, res) {
   logger.debug('Confirm funds transfer call')
-  const query = bridge.methods.confirmFundsTransfer()
+  const query = bridge.interface.functions.confirmFundsTransfer.encode([])
   await homeSendQuery(query)
   res.send()
   logger.debug('Confirm funds transfer end')
@@ -255,37 +286,37 @@ async function sendVote(query, req, res, waitFlag = false) {
 
 async function voteStartVoting(req, res) {
   logger.info('Voting for starting new epoch voting process')
-  const query = bridge.methods.startVoting()
+  const query = bridge.interface.functions.startVoting.encode([])
   await sendVote(query, req, res, true)
 }
 
 async function voteStartKeygen(req, res) {
   logger.info('Voting for starting new epoch keygen')
-  const query = bridge.methods.voteStartKeygen()
+  const query = bridge.interface.functions.voteStartKeygen.encode([])
   await sendVote(query, req, res)
 }
 
 async function voteCancelKeygen(req, res) {
   logger.info('Voting for cancelling new epoch keygen')
-  const query = bridge.methods.voteCancelKeygen()
+  const query = bridge.interface.functions.voteCancelKeygen.encode([])
   await sendVote(query, req, res)
 }
 
 async function voteAddValidator(req, res) {
   logger.info('Voting for adding new validator')
-  const query = bridge.methods.voteAddValidator(req.params.validator)
+  const query = bridge.interface.functions.voteAddValidator.encode([req.params.validator])
   await sendVote(query, req, res)
 }
 
 async function voteChangeThreshold(req, res) {
   logger.info('Voting for changing threshold')
-  const query = bridge.methods.voteChangeThreshold(req.params.threshold)
+  const query = bridge.interface.functions.voteChangeThreshold.encode([req.params.threshold])
   await sendVote(query, req, res)
 }
 
 async function voteRemoveValidator(req, res) {
   logger.info('Voting for removing validator')
-  const query = bridge.methods.voteRemoveValidator(req.params.validator)
+  const query = bridge.interface.functions.voteRemoveValidator.encode([req.params.validator])
   await sendVote(query, req, res, true)
 }
 
@@ -315,9 +346,9 @@ function boundX(x) {
 async function transfer(req, res) {
   logger.info('Transfer start')
   const { hash, to, value } = req.body
-  if (homeWeb3.utils.isAddress(to)) {
+  if (ethers.utils.isHexString(to, 20)) {
     logger.info(`Calling transfer to ${to}, ${value} tokens`)
-    const query = bridge.methods.transfer(hash, to, `0x${new BN(value).toString(16)}`)
+    const query = bridge.interface.functions.transfer.encode([hash, to, `0x${new BN(value).toString(16)}`])
     await homeSendQuery(query)
   }
   res.send()
@@ -335,6 +366,12 @@ function getForeignBalances(address) {
     .catch(() => ({}))
 }
 
+function getVotesCount(nextEpoch, voteType) {
+  return bridge.votesCount(
+    ethers.utils.keccak256(ethers.utils.solidityPack(['uint8', 'uint256'], [voteType, nextEpoch]))
+  ).then(boundX)
+}
+
 async function info(req, res) {
   logger.debug('Info start')
   try {
@@ -342,37 +379,29 @@ async function info(req, res) {
       x, y, epoch, rangeSize, nextRangeSize, epochStartBlock, foreignNonce, nextEpoch,
       threshold, nextThreshold, validators, nextValidators, status, homeBalance
     ] = await Promise.all([
-      bridge.methods.getX().call().then((value) => new BN(value).toString(16)),
-      bridge.methods.getY().call().then((value) => new BN(value).toString(16)),
-      bridge.methods.epoch().call().then(boundX),
-      bridge.methods.getRangeSize().call().then(boundX),
-      bridge.methods.getNextRangeSize().call().then(boundX),
-      bridge.methods.getStartBlock().call().then(boundX),
-      bridge.methods.getNonce().call().then(boundX),
-      bridge.methods.nextEpoch().call().then(boundX),
-      bridge.methods.getThreshold().call().then(boundX),
-      bridge.methods.getNextThreshold().call().then(boundX),
-      bridge.methods.getValidators().call(),
-      bridge.methods.getNextValidators().call(),
-      bridge.methods.status().call(),
-      token.methods.balanceOf(HOME_BRIDGE_ADDRESS).call()
+      bridge.getX().then((value) => new BN(value).toString(16)),
+      bridge.getY().then((value) => new BN(value).toString(16)),
+      bridge.epoch().then(boundX),
+      bridge.getRangeSize().then(boundX),
+      bridge.getNextRangeSize().then(boundX),
+      bridge.getStartBlock().then(boundX),
+      bridge.getNonce().then(boundX),
+      bridge.nextEpoch().then(boundX),
+      bridge.getThreshold().then(boundX),
+      bridge.getNextThreshold().then(boundX),
+      bridge.getValidators(),
+      bridge.getNextValidators(),
+      bridge.status().then(boundX),
+      token.balanceOf(HOME_BRIDGE_ADDRESS)
         .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18).toFixed(8, 3)))
     ])
     const [
       confirmationsForFundsTransfer, votesForVoting, votesForKeygen, votesForCancelKeygen
     ] = await Promise.all([
-      bridge.methods.votesCount(
-        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [1, nextEpoch]))
-      ).call().then(boundX),
-      bridge.methods.votesCount(
-        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [2, nextEpoch]))
-      ).call().then(boundX),
-      bridge.methods.votesCount(
-        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [7, nextEpoch]))
-      ).call().then(boundX),
-      bridge.methods.votesCount(
-        homeWeb3.utils.sha3(utils.solidityPack(['uint8', 'uint256'], [8, nextEpoch]))
-      ).call().then(boundX)
+      getVotesCount(nextEpoch, 1),
+      getVotesCount(nextEpoch, 2),
+      getVotesCount(nextEpoch, 7),
+      getVotesCount(nextEpoch, 8)
     ])
     const foreignAddress = publicKeyToAddress({
       x,
diff --git a/src/oracle/proxy/package.json b/src/oracle/proxy/package.json
index 6624098..33c7e10 100644
--- a/src/oracle/proxy/package.json
+++ b/src/oracle/proxy/package.json
@@ -2,7 +2,6 @@
   "name": "proxy",
   "version": "0.0.1",
   "dependencies": {
-    "web3": "1.0.0-beta.55",
     "bech32": "1.1.3",
     "express": "4.17.1",
     "async-lock": "1.2.0",
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index 9e9b0cd..f00188e 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -1,4 +1,3 @@
-const Web3 = require('web3')
 const axios = require('axios')
 const ethers = require('ethers')
 const BN = require('bignumber.js')
@@ -21,10 +20,10 @@ async function sendRpcRequest(url, method, params) {
 }
 
 async function createSender(url, privateKey) {
-  const web3 = new Web3(url, null, { transactionConfirmationBlocks: 1 })
-  const signer = new ethers.utils.SigningKey(privateKey)
+  const provider = new ethers.providers.JsonRpcProvider(url)
+  const wallet = new ethers.Wallet(privateKey, provider)
 
-  const chainId = await web3.eth.net.getId()
+  const { chainId } = await provider.getNetwork()
   return async function send(tx) {
     const newTx = {
       data: tx.data,
@@ -38,7 +37,7 @@ async function createSender(url, privateKey) {
     try {
       logger.trace(`Preparing and sending transaction %o on ${url}`, newTx)
       const estimate = await sendRpcRequest(url, 'eth_estimateGas', [{
-        from: signer.address,
+        from: wallet.address,
         to: newTx.to,
         data: newTx.data,
         gasPrice: newTx.gasPrice,
@@ -50,14 +49,14 @@ async function createSender(url, privateKey) {
         logger.debug('Gas estimate failed %o, skipping tx, reverting nonce', estimate.error)
         return true
       }
-      const gasLimit = BN.min(new BN(estimate.result, 16)
-        .multipliedBy(GAS_LIMIT_FACTOR), MAX_GAS_LIMIT)
+      const gasLimit = BN.min(
+        new BN(estimate.result, 16).multipliedBy(GAS_LIMIT_FACTOR),
+        MAX_GAS_LIMIT
+      )
       newTx.gasLimit = `0x${new BN(gasLimit).toString(16)}`
       logger.trace(`Estimated gas to ${gasLimit}`)
 
-      const hash = web3.utils.sha3(ethers.utils.serializeTransaction(newTx))
-      const signature = signer.signDigest(hash)
-      const signedTx = ethers.utils.serializeTransaction(newTx, signature)
+      const signedTx = await wallet.sign(newTx)
 
       const { result, error } = await sendRpcRequest(url, 'eth_sendRawTransaction', [signedTx])
       // handle nonce error
@@ -79,14 +78,15 @@ async function createSender(url, privateKey) {
 }
 
 async function waitForReceipt(url, txHash) {
+  const provider = new ethers.providers.JsonRpcProvider(url)
   while (true) {
-    const { result, error } = await sendRpcRequest(url, 'eth_getTransactionReceipt', [txHash])
+    const receipt = await provider.getTransactionReceipt(txHash)
 
-    if (result === null || error) {
-      await delay(1000)
-    } else {
-      return result
+    if (receipt) {
+      return receipt
     }
+
+    await delay(1000)
   }
 }
 

From 8e8af2ba34308491df2f1cd6b8af562636f57f65 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 5 Nov 2019 11:00:54 +0300
Subject: [PATCH 063/129] Refactored proxy, splitted code in several files

---
 src/oracle/proxy/Dockerfile      |   2 +-
 src/oracle/proxy/contractsAbi.js |  42 ++++++++++
 src/oracle/proxy/index.js        | 130 +++++++++----------------------
 src/oracle/proxy/utils.js        |  37 +++++++++
 4 files changed, 116 insertions(+), 95 deletions(-)
 create mode 100644 src/oracle/proxy/contractsAbi.js
 create mode 100644 src/oracle/proxy/utils.js

diff --git a/src/oracle/proxy/Dockerfile b/src/oracle/proxy/Dockerfile
index e36f80b..2069f11 100644
--- a/src/oracle/proxy/Dockerfile
+++ b/src/oracle/proxy/Dockerfile
@@ -6,6 +6,6 @@ COPY ./proxy/package.json /proxy/
 
 RUN npm install
 
-COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /proxy/
+COPY ./proxy/index.js ./proxy/encode.js ./proxy/decode.js ./proxy/sendTx.js ./proxy/contractsAbi.js ./proxy/utils.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /proxy/
 
 ENTRYPOINT ["node", "index.js"]
diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
new file mode 100644
index 0000000..312681c
--- /dev/null
+++ b/src/oracle/proxy/contractsAbi.js
@@ -0,0 +1,42 @@
+const tokenAbi = [
+  'function balanceOf(address account) view returns (uint256)'
+]
+const bridgeAbi = [
+  'function getX() view returns (uint)',
+  'function getY() view returns (uint)',
+  'function epoch() view returns (uint)',
+  'function getRangeSize() view returns (uint)',
+  'function getNextRangeSize() view returns (uint)',
+  'function getStartBlock() view returns (uint)',
+  'function getNonce() view returns (uint)',
+  'function nextEpoch() view returns (uint)',
+  'function getThreshold() view returns (uint)',
+  'function getNextThreshold() view returns (uint)',
+  'function getValidators() view returns (address[])',
+  'function getNextValidators() view returns (address[])',
+  'function status() view returns (uint)',
+  'function votesCount(bytes32) view returns (uint)',
+  'function getNextPartyId(address a) view returns (uint)',
+  'function confirmKeygen(uint x, uint y)',
+  'function confirmFundsTransfer()',
+  'function startVoting()',
+  'function voteStartKeygen()',
+  'function voteCancelKeygen()',
+  'function voteAddValidator(address validator)',
+  'function voteRemoveValidator(address validator)',
+  'function voteChangeThreshold(uint threshold)',
+  'function transfer(bytes32 hash, address to, uint value)'
+]
+const sharedDbAbi = [
+  'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
+  'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
+  'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint)',
+  'function setData(bytes32 hash, bytes32 key, bytes data)',
+  'function signupSign(bytes32 hash)'
+]
+
+module.exports = {
+  tokenAbi,
+  bridgeAbi,
+  sharedDbAbi
+}
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 07dcfe8..ec539d4 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -4,6 +4,10 @@ const axios = require('axios')
 const BN = require('bignumber.js')
 const ethers = require('ethers')
 
+const { tokenAbi, bridgeAbi, sharedDbAbi } = require('./contractsAbi')
+const {
+  Ok, Err, decodeStatus, boundX
+} = require('./utils')
 const encode = require('./encode')
 const decode = require('./decode')
 const { createSender, waitForReceipt } = require('./sendTx')
@@ -15,43 +19,6 @@ const {
   HOME_TOKEN_ADDRESS, FOREIGN_URL, FOREIGN_ASSET
 } = process.env
 
-const tokenAbi = [
-  'function balanceOf(address account) view returns (uint256)'
-]
-const bridgeAbi = [
-  'function getX() view returns (uint)',
-  'function getY() view returns (uint)',
-  'function epoch() view returns (uint)',
-  'function getRangeSize() view returns (uint)',
-  'function getNextRangeSize() view returns (uint)',
-  'function getStartBlock() view returns (uint)',
-  'function getNonce() view returns (uint)',
-  'function nextEpoch() view returns (uint)',
-  'function getThreshold() view returns (uint)',
-  'function getNextThreshold() view returns (uint)',
-  'function getValidators() view returns (address[])',
-  'function getNextValidators() view returns (address[])',
-  'function status() view returns (uint)',
-  'function votesCount(bytes32) view returns (uint)',
-  'function getNextPartyId(address a) view returns (uint)',
-  'function confirmKeygen(uint x, uint y)',
-  'function confirmFundsTransfer()',
-  'function startVoting()',
-  'function voteStartKeygen()',
-  'function voteCancelKeygen()',
-  'function voteAddValidator(address validator)',
-  'function voteRemoveValidator(address validator)',
-  'function voteChangeThreshold(uint threshold)',
-  'function transfer(bytes32 hash, address to, uint value)'
-]
-const sharedDbAbi = [
-  'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
-  'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
-  'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint)',
-  'function setData(bytes32 hash, bytes32 key, bytes data)',
-  'function signupSign(bytes32 hash)'
-]
-
 const homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
 const sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
 const homeWallet = new ethers.Wallet(VALIDATOR_PRIVATE_KEY, homeProvider)
@@ -78,36 +45,8 @@ app.use(express.urlencoded({ extended: true }))
 
 const votesProxyApp = express()
 
-async function main() {
-  homeValidatorNonce = await homeWallet.getTransactionCount()
-  sideValidatorNonce = await sideWallet.getTransactionCount()
-
-  homeSender = await createSender(HOME_RPC_URL, VALIDATOR_PRIVATE_KEY)
-  sideSender = await createSender(SIDE_RPC_URL, VALIDATOR_PRIVATE_KEY)
-
-  logger.warn(`My validator address in home and side networks is ${validatorAddress}`)
-
-  app.listen(8001, () => {
-    logger.debug('Proxy is listening on port 8001')
-  })
-
-  votesProxyApp.listen(8002, () => {
-    logger.debug('Votes proxy is listening on port 8002')
-  })
-}
-
-main()
-
-function Ok(data) {
-  return { Ok: data }
-}
-
-function Err(data) {
-  return { Err: data }
-}
-
 function sideSendQuery(query) {
-  return lock.acquire('home', async () => {
+  return lock.acquire('side', async () => {
     logger.debug('Sending side query')
     const senderResponse = await sideSender({
       data: query,
@@ -304,42 +243,25 @@ async function voteCancelKeygen(req, res) {
 
 async function voteAddValidator(req, res) {
   logger.info('Voting for adding new validator')
-  const query = bridge.interface.functions.voteAddValidator.encode([req.params.validator])
-  await sendVote(query, req, res)
+  if (ethers.utils.isHexString(req.params.validator, 20)) {
+    const query = bridge.interface.functions.voteAddValidator.encode([req.params.validator])
+    await sendVote(query, req, res)
+  }
 }
 
 async function voteChangeThreshold(req, res) {
   logger.info('Voting for changing threshold')
-  const query = bridge.interface.functions.voteChangeThreshold.encode([req.params.threshold])
-  await sendVote(query, req, res)
+  if (/^[0-9]+$/.test(req.params.threshold)) {
+    const query = bridge.interface.functions.voteChangeThreshold.encode([req.params.threshold])
+    await sendVote(query, req, res)
+  }
 }
 
 async function voteRemoveValidator(req, res) {
   logger.info('Voting for removing validator')
-  const query = bridge.interface.functions.voteRemoveValidator.encode([req.params.validator])
-  await sendVote(query, req, res, true)
-}
-
-function decodeStatus(status) {
-  switch (status) {
-    case 0:
-      return 'ready'
-    case 1:
-      return 'voting'
-    case 2:
-      return 'keygen'
-    case 3:
-      return 'funds_transfer'
-    default:
-      return 'unknown_state'
-  }
-}
-
-function boundX(x) {
-  try {
-    return x.toNumber()
-  } catch (e) {
-    return -1
+  if (ethers.utils.isHexString(req.params.validator, 20)) {
+    const query = bridge.interface.functions.voteRemoveValidator.encode([req.params.validator])
+    await sendVote(query, req, res, true)
   }
 }
 
@@ -458,3 +380,23 @@ votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
 votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
 votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
 votesProxyApp.get('/info', info)
+
+async function main() {
+  homeValidatorNonce = await homeWallet.getTransactionCount()
+  sideValidatorNonce = await sideWallet.getTransactionCount()
+
+  homeSender = await createSender(HOME_RPC_URL, VALIDATOR_PRIVATE_KEY)
+  sideSender = await createSender(SIDE_RPC_URL, VALIDATOR_PRIVATE_KEY)
+
+  logger.warn(`My validator address in home and side networks is ${validatorAddress}`)
+
+  app.listen(8001, () => {
+    logger.debug('Proxy is listening on port 8001')
+  })
+
+  votesProxyApp.listen(8002, () => {
+    logger.debug('Votes proxy is listening on port 8002')
+  })
+}
+
+main()
diff --git a/src/oracle/proxy/utils.js b/src/oracle/proxy/utils.js
new file mode 100644
index 0000000..72bd8e9
--- /dev/null
+++ b/src/oracle/proxy/utils.js
@@ -0,0 +1,37 @@
+function Ok(data) {
+  return { Ok: data }
+}
+
+function Err(data) {
+  return { Err: data }
+}
+
+function decodeStatus(status) {
+  switch (status) {
+    case 0:
+      return 'ready'
+    case 1:
+      return 'voting'
+    case 2:
+      return 'keygen'
+    case 3:
+      return 'funds_transfer'
+    default:
+      return 'unknown_state'
+  }
+}
+
+function boundX(x) {
+  try {
+    return x.toNumber()
+  } catch (e) {
+    return -1
+  }
+}
+
+module.exports = {
+  Ok,
+  Err,
+  decodeStatus,
+  boundX
+}

From 85ca572e1c4435a11b12d65b9cd2c562c66180ad Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 5 Nov 2019 21:14:22 +0300
Subject: [PATCH 064/129] Handle attempts changing in signer properly

---
 demo/validator1/.env.development   |   4 ++
 demo/validator1/.env.staging       |   4 ++
 demo/validator2/.env.development   |   4 ++
 demo/validator2/.env.staging       |   4 ++
 demo/validator3/.env.development   |   4 ++
 demo/validator3/.env.staging       |   4 ++
 package.json                       |   3 -
 src/oracle/docker-compose-test.yml |   3 +
 src/oracle/docker-compose.yml      |   3 +
 src/oracle/proxy/index.js          |   6 +-
 src/oracle/tss-sign/signer.js      | 103 ++++++++++++++++++++++-------
 src/tss/multi-party-ecdsa          |   2 +-
 12 files changed, 113 insertions(+), 31 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 3166e7b..183da5a 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 VALIDATOR_PRIVATE_KEY=2be3f252e16541bf1bb2d4a517d2bf173e6d09f2d765d32c64dc50515aec63ea
 
 VOTES_PROXY_PORT=5001
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 5513f42..2bd353f 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5001
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 433ee15..491d22f 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 VALIDATOR_PRIVATE_KEY=e59d58c77b791f98f10187117374ae9c589d48a62720ec6a5e142b0cc134f685
 
 VOTES_PROXY_PORT=5002
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index e2f6756..ed88661 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5002
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 9c175f8..014db1a 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 VALIDATOR_PRIVATE_KEY=afaa4d4d6e54d25b0bf0361e3fd6cef562f6311bf6200de2dd0aa4cab63ae3b5
 
 VOTES_PROXY_PORT=5003
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index 3925fbc..a1e5fef 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -14,6 +14,10 @@ FOREIGN_START_TIME=1572500000000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
+SIGN_ATTEMPT_TIMEOUT=120000
+SIGN_NONCE_CHECK_INTERVAL=10000
+SEND_TIMEOUT=60000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5003
diff --git a/package.json b/package.json
index 154668e..e954bd9 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,5 @@
   },
   "engines": {
     "node": ">=10.6.0"
-  },
-  "dependencies": {
-    "ethers": "^4.0.39"
   }
 }
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 8725650..3286cba 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -47,6 +47,9 @@ services:
       - FOREIGN_CHAIN_ID
       - FOREIGN_URL
       - FOREIGN_ASSET
+      - SIGN_ATTEMPT_TIMEOUT
+      - SIGN_NONCE_CHECK_INTERVAL
+      - SEND_TIMEOUT
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index e16cbe4..3463f2b 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -49,6 +49,9 @@ services:
       - FOREIGN_CHAIN_ID
       - FOREIGN_URL
       - FOREIGN_ASSET
+      - SIGN_ATTEMPT_TIMEOUT
+      - SIGN_NONCE_CHECK_INTERVAL
+      - SEND_TIMEOUT
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index ec539d4..7546cbb 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -242,24 +242,24 @@ async function voteCancelKeygen(req, res) {
 }
 
 async function voteAddValidator(req, res) {
-  logger.info('Voting for adding new validator')
   if (ethers.utils.isHexString(req.params.validator, 20)) {
+    logger.info('Voting for adding new validator')
     const query = bridge.interface.functions.voteAddValidator.encode([req.params.validator])
     await sendVote(query, req, res)
   }
 }
 
 async function voteChangeThreshold(req, res) {
-  logger.info('Voting for changing threshold')
   if (/^[0-9]+$/.test(req.params.threshold)) {
+    logger.info('Voting for changing threshold')
     const query = bridge.interface.functions.voteChangeThreshold.encode([req.params.threshold])
     await sendVote(query, req, res)
   }
 }
 
 async function voteRemoveValidator(req, res) {
-  logger.info('Voting for removing validator')
   if (ethers.utils.isHexString(req.params.validator, 20)) {
+    logger.info('Voting for removing validator')
     const query = bridge.interface.functions.voteRemoveValidator.encode([req.params.validator])
     await sendVote(query, req, res, true)
   }
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index c79e5f0..d46bce7 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -16,9 +16,16 @@ const app = express()
 const {
   RABBITMQ_URL, FOREIGN_URL, PROXY_URL, FOREIGN_ASSET
 } = process.env
+const SIGN_ATTEMPT_TIMEOUT = parseInt(process.env.SIGN_ATTEMPT_TIMEOUT, 10)
+const SIGN_NONCE_CHECK_INTERVAL = parseInt(process.env.SIGN_NONCE_CHECK_INTERVAL, 10)
+const SEND_TIMEOUT = parseInt(process.env.SEND_TIMEOUT, 10)
 
 const httpClient = axios.create({ baseURL: FOREIGN_URL })
 
+const SIGN_OK = 0
+const SIGN_NONCE_INTERRUPT = 1
+const SIGN_FAILED = 2
+
 let attempt
 let nextAttempt = null
 let cancelled
@@ -46,12 +53,18 @@ async function getExchangeMessages(nonce) {
   return messages
 }
 
-function restart(req, res) {
-  logger.info('Cancelling current sign')
-  nextAttempt = req.params.attempt
+function killSigner() {
   exec.execSync('pkill gg18_sign || true')
-  cancelled = true
-  res.send('Cancelled')
+}
+
+function restart(req, res) {
+  if (/^[0-9]+$/.test(req.params.attempt)) {
+    logger.info(`Manual cancelling current sign attempt, starting ${req.params.attempt} attempt`)
+    nextAttempt = parseInt(req.params.attempt, 10)
+    killSigner()
+    cancelled = true
+    res.send('Done')
+  }
 }
 
 function confirmFundsTransfer() {
@@ -85,7 +98,7 @@ async function waitForAccountNonce(address, nonce) {
     if (sequence >= nonce) {
       break
     }
-    await new Promise((resolve) => setTimeout(resolve, 1000))
+    await delay(1000)
     logger.debug('Waiting for needed account nonce')
   }
   logger.info('Account nonce is OK')
@@ -100,20 +113,26 @@ function sendTx(tx) {
         'Content-Type': 'text/plain'
       }
     })
-    .catch((err) => {
+    .catch(async (err) => {
       if (err.response.data.message.includes('Tx already exists in cache')) {
         logger.debug('Tx already exists in cache')
         return true
       }
       logger.info('Something failed, restarting: %o', err.response)
-      return new Promise((resolve) => setTimeout(() => resolve(sendTx(tx)), 1000))
+      await delay(1000)
+      return await sendTx(tx)
     })
 }
 
-function sign(keysFile, hash, tx, publicKey) {
+function sign(keysFile, hash, tx, publicKey, signerAddress) {
+  let restartTimeoutId
+  let nonceDaemonIntervalId
+  let nonceInterrupt = false
   return new Promise((resolve) => {
     const cmd = exec.execFile('./sign-entrypoint.sh', [PROXY_URL, keysFile, hash], async (error) => {
-      if (fs.existsSync('signature')) {
+      clearInterval(nonceDaemonIntervalId)
+      clearTimeout(restartTimeoutId)
+      if (fs.existsSync('signature')) { // if signature was generated
         logger.info('Finished signature generation')
         const signature = JSON.parse(fs.readFileSync('signature'))
         logger.debug('%o', signature)
@@ -127,16 +146,50 @@ function sign(keysFile, hash, tx, publicKey) {
         logger.info('Sending transaction')
         logger.debug(signedTx)
         await sendTx(signedTx)
-        resolve(true)
-      } else if (error === null || error.code === 0) {
-        resolve(true)
+        // if nonce does not update in some time, cancel process, consider sign as failed
+        const sendTimeoutId = setTimeout(() => {
+          cancelled = true
+        }, SEND_TIMEOUT)
+        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence)
+        clearTimeout(sendTimeoutId)
+        resolve(waitResponse ? SIGN_OK : SIGN_FAILED)
+      } else if (error === null || error.code === 0) { // if was already enough parties
+        const signTimeoutId = setTimeout(() => {
+          cancelled = true
+        }, SIGN_ATTEMPT_TIMEOUT)
+        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence)
+        clearTimeout(signTimeoutId)
+        resolve(waitResponse ? SIGN_OK : SIGN_FAILED)
+      } else if (error.code !== null && error.code !== 0) { // if process has failed
+        logger.warn('Sign process has failed')
+        resolve(SIGN_FAILED)
+      } else if (error.code === null && error.signal === 'SIGTERM') { // if process was killed
+        logger.warn('Sign process was killed')
+        resolve(nonceInterrupt ? SIGN_NONCE_INTERRUPT : SIGN_FAILED)
       } else {
-        logger.warn('Sign failed')
-        resolve(false)
+        logger.warn('Unknown error state %o', error)
+        resolve(SIGN_FAILED)
       }
     })
-    cmd.stdout.on('data', (data) => logger.debug(data.toString()))
+    cmd.stdout.on('data', (data) => {
+      const str = data.toString()
+      if (str.includes('Got all party ids')) {
+        restartTimeoutId = setTimeout(killSigner, SIGN_ATTEMPT_TIMEOUT)
+      }
+      logger.debug(str)
+    })
     cmd.stderr.on('data', (data) => logger.debug(data.toString()))
+
+    // Kill signer if current nonce is already processed at some time
+    nonceDaemonIntervalId = setInterval(async () => {
+      nonceInterrupt = true
+      logger.info(`Checking if account ${signerAddress} has nonce ${tx.tx.sequence + 1}`)
+      const { sequence } = await getAccount(signerAddress)
+      if (sequence > tx.tx.sequence) {
+        logger.info('Account already has needed nonce, cancelling current sign process')
+        killSigner()
+      }
+    }, SIGN_NONCE_CHECK_INTERVAL)
   })
 }
 
@@ -201,17 +254,18 @@ async function main() {
 
           const hash = sha256(tx.getSignBytes())
           logger.info(`Starting signature generation for transaction hash ${hash}`)
-          const done = await sign(keysFile, hash, tx, publicKey)
-            && await waitForAccountNonce(from, nonce + 1)
+          const signResult = await sign(keysFile, hash, tx, publicKey, from)
 
-          if (done) {
+          if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
             // eslint-disable-next-line no-loop-func
             exchanges.forEach((exchangeMsg) => channel.ack(exchangeMsg))
             break
           }
+
+          // signer either failed, or timed out after parties signup
           attempt = nextAttempt || attempt + 1
-          logger.warn(`Sign failed, starting next attempt ${attempt}`)
           nextAttempt = null
+          logger.warn(`Sign failed, starting next attempt ${attempt}`)
           await delay(1000)
         }
       }
@@ -236,16 +290,17 @@ async function main() {
 
         const hash = sha256(tx.getSignBytes())
         logger.info(`Starting signature generation for transaction hash ${hash}`)
-        const done = await sign(keysFile, hash, tx, publicKey)
-          && await waitForAccountNonce(from, nonce + 1)
+        const signResult = await sign(keysFile, hash, tx, publicKey, from)
 
-        if (done) {
+        if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
           await confirmFundsTransfer()
           break
         }
+
+        // signer either failed, or timed out after parties signup
         attempt = nextAttempt || attempt + 1
-        logger.warn(`Sign failed, starting next attempt ${attempt}`)
         nextAttempt = null
+        logger.warn(`Sign failed, starting next attempt ${attempt}`)
         await delay(1000)
       }
     } else {
diff --git a/src/tss/multi-party-ecdsa b/src/tss/multi-party-ecdsa
index 73a6db9..f67cc7f 160000
--- a/src/tss/multi-party-ecdsa
+++ b/src/tss/multi-party-ecdsa
@@ -1 +1 @@
-Subproject commit 73a6db93f4805b27f5c0f2b2c139869e8cecf581
+Subproject commit f67cc7ffab0f460807f6e112ad93b5ce58e47ac6

From e484308774c11e2406b7fecbc5b560b2342d283c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 5 Nov 2019 21:14:48 +0300
Subject: [PATCH 065/129] Tests for signer restarts

---
 tests/.env                           |  2 +
 tests/run.sh                         |  1 +
 tests/test/ethToBncWithRestart.js    | 74 ++++++++++++++++++++++++++++
 tests/test/index.js                  |  3 ++
 tests/test/utils/sideController.js   | 11 +++++
 tests/test/utils/signerController.js | 22 +++++++++
 6 files changed, 113 insertions(+)
 create mode 100644 tests/test/ethToBncWithRestart.js
 create mode 100644 tests/test/utils/sideController.js
 create mode 100644 tests/test/utils/signerController.js

diff --git a/tests/.env b/tests/.env
index d6c7a4b..e54b083 100644
--- a/tests/.env
+++ b/tests/.env
@@ -3,6 +3,8 @@ HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 HOME_TOKEN_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 HOME_PRIVATE_KEY=e2aeb24eaa63102d0c0821717c3b6384abdabd7af2ad4ec8e650dce300798b27
 
+SIDE_RPC_URL=http://ganache_side:8545
+
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
diff --git a/tests/run.sh b/tests/run.sh
index a4f7090..a81a6e6 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -11,6 +11,7 @@ docker create --name tests \
     tests $@
 
 docker network connect blockchain_home tests
+docker network connect blockchain_side tests
 docker network connect validator1_test_network tests
 docker network connect validator2_test_network tests
 docker network connect validator3_test_network tests
diff --git a/tests/test/ethToBncWithRestart.js b/tests/test/ethToBncWithRestart.js
new file mode 100644
index 0000000..ed6c3f9
--- /dev/null
+++ b/tests/test/ethToBncWithRestart.js
@@ -0,0 +1,74 @@
+const assert = require('assert')
+
+const { getBncSequence } = require('./utils/bncController')
+const { waitPromise, delay, seqMap } = require('./utils/wait')
+
+const { controller1 } = require('./utils/proxyController')
+const { getNonce } = require('./utils/sideController')
+const { signerController1, signerController2 } = require('./utils/signerController')
+
+const { validators } = require('../config')
+
+const { HOME_BRIDGE_ADDRESS } = process.env
+
+module.exports = (getUsers, newAttempt) => {
+  describe('exchange of tokens in eth => bnc direction with restart', function () {
+    let info
+    let users
+    let ethBalances
+    let bncBalances
+    let bncBridgeSequence
+    let validatorNonces
+    let newValidatorNonces
+
+    before(async function () {
+      users = getUsers()
+      info = await controller1.getInfo()
+      ethBalances = await Promise.all(users.map((user) => user.getErcBalance()))
+      bncBalances = await seqMap(users, (user) => user.getBepBalance())
+      validatorNonces = await Promise.all(validators.map(getNonce))
+
+      bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
+      await Promise.all(users.map((user, i) => user.approveErc(HOME_BRIDGE_ADDRESS, 5 + i)))
+    })
+
+    it('should accept exchange requests', async function () {
+      await Promise.all(users.map((user, i) => user.exchangeErc(5 + i)))
+      const newEthBalances = await Promise.all(users.map((user) => user.getErcBalance()))
+      for (let i = 0; i < 3; i += 1) {
+        assert.strictEqual(newEthBalances[i], ethBalances[i] - 5 - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
+      }
+    })
+
+    it('should start signing transaction', async function () {
+      this.timeout(120000)
+      newValidatorNonces = await waitPromise(
+        () => Promise.all(validators.map(getNonce)),
+        (nonces) => nonces[0] > validatorNonces[0] + 2
+          || nonces[1] > validatorNonces[1] + 2
+          || nonces[2] > validatorNonces[2] + 2
+      )
+    })
+
+    it('should restart signature generation and regenerate signature properly', async function () {
+      this.timeout(360000)
+      if (newValidatorNonces[0] > validatorNonces[0] + 2) {
+        await signerController1.restart(newAttempt)
+      } else {
+        await signerController2.restart(newAttempt)
+      }
+      await waitPromise(
+        () => getBncSequence(info.foreignBridgeAddress),
+        (sequence) => sequence === bncBridgeSequence + 1
+      )
+    })
+
+    it('should make correct exchange transaction', async function () {
+      await delay(10000)
+      const newBncBalances = await Promise.all(users.map((user) => user.getBepBalance()))
+      for (let i = 0; i < 3; i += 1) {
+        assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
+      }
+    })
+  })
+}
diff --git a/tests/test/index.js b/tests/test/index.js
index 379689c..cfaa4ea 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -4,6 +4,7 @@ const createUser = require('./utils/user')
 const { waitPromise, seqMap } = require('./utils/wait')
 
 const testEthToBnc = require('./ethToBnc')
+const testEthToBncWithRestart = require('./ethToBncWithRestart')
 const testBncToEth = require('./bncToEth')
 const testRemoveValidator = require('./removeValidator')
 const testAddValidator = require('./addValidator')
@@ -80,9 +81,11 @@ describe('bridge tests', function () {
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
+  testEthToBncWithRestart(() => users, 99)
 
   testChangeThreshold(3)
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
+  testEthToBncWithRestart(() => users, 2)
 })
diff --git a/tests/test/utils/sideController.js b/tests/test/utils/sideController.js
new file mode 100644
index 0000000..24fac5e
--- /dev/null
+++ b/tests/test/utils/sideController.js
@@ -0,0 +1,11 @@
+const ethers = require('ethers')
+
+const { SIDE_RPC_URL } = process.env
+
+const provider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+
+module.exports = {
+  async getNonce(address) {
+    return await provider.getTransactionCount(address)
+  }
+}
diff --git a/tests/test/utils/signerController.js b/tests/test/utils/signerController.js
new file mode 100644
index 0000000..12cfb1c
--- /dev/null
+++ b/tests/test/utils/signerController.js
@@ -0,0 +1,22 @@
+const axios = require('axios')
+
+function createController(validatorId) {
+  const url = `http://validator${validatorId}_signer_1:8001/`
+
+  const sideClient = axios.create({
+    baseURL: url,
+    timeout: 10000
+  })
+
+  return {
+    async restart(attempt) {
+      return (await sideClient.get(`/restart/${attempt}`)).data
+    }
+  }
+}
+
+module.exports = {
+  signerController1: createController(1),
+  signerController2: createController(2),
+  signerController3: createController(3)
+}

From 5322d790fc3f3fd58c018e94f83e310268e6c85c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 5 Nov 2019 23:23:07 +0300
Subject: [PATCH 066/129] Fixed signer

---
 src/oracle/tss-sign/signer.js | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index d46bce7..b23ce4f 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -130,6 +130,7 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
   let nonceInterrupt = false
   return new Promise((resolve) => {
     const cmd = exec.execFile('./sign-entrypoint.sh', [PROXY_URL, keysFile, hash], async (error) => {
+      logger.debug('%o', error)
       clearInterval(nonceDaemonIntervalId)
       clearTimeout(restartTimeoutId)
       if (fs.existsSync('signature')) { // if signature was generated
@@ -150,22 +151,22 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
         const sendTimeoutId = setTimeout(() => {
           cancelled = true
         }, SEND_TIMEOUT)
-        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence)
+        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence + 1)
         clearTimeout(sendTimeoutId)
         resolve(waitResponse ? SIGN_OK : SIGN_FAILED)
       } else if (error === null || error.code === 0) { // if was already enough parties
         const signTimeoutId = setTimeout(() => {
           cancelled = true
         }, SIGN_ATTEMPT_TIMEOUT)
-        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence)
+        const waitResponse = await waitForAccountNonce(signerAddress, tx.tx.sequence + 1)
         clearTimeout(signTimeoutId)
         resolve(waitResponse ? SIGN_OK : SIGN_FAILED)
+      } else if (error.code === 143) { // if process was killed
+        logger.warn('Sign process was killed')
+        resolve(nonceInterrupt ? SIGN_NONCE_INTERRUPT : SIGN_FAILED)
       } else if (error.code !== null && error.code !== 0) { // if process has failed
         logger.warn('Sign process has failed')
         resolve(SIGN_FAILED)
-      } else if (error.code === null && error.signal === 'SIGTERM') { // if process was killed
-        logger.warn('Sign process was killed')
-        resolve(nonceInterrupt ? SIGN_NONCE_INTERRUPT : SIGN_FAILED)
       } else {
         logger.warn('Unknown error state %o', error)
         resolve(SIGN_FAILED)
@@ -182,11 +183,11 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
 
     // Kill signer if current nonce is already processed at some time
     nonceDaemonIntervalId = setInterval(async () => {
-      nonceInterrupt = true
       logger.info(`Checking if account ${signerAddress} has nonce ${tx.tx.sequence + 1}`)
       const { sequence } = await getAccount(signerAddress)
       if (sequence > tx.tx.sequence) {
         logger.info('Account already has needed nonce, cancelling current sign process')
+        nonceInterrupt = true
         killSigner()
       }
     }, SIGN_NONCE_CHECK_INTERVAL)

From 4093400137d7a6483ba9fa86a6236cd7aa277ba9 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 5 Nov 2019 23:24:47 +0300
Subject: [PATCH 067/129] Repeating eth to bnc transfer tests

---
 tests/test/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/test/index.js b/tests/test/index.js
index cfaa4ea..e19698b 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -71,11 +71,13 @@ describe('bridge tests', function () {
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
+  testEthToBnc(() => users)
 
   testRemoveValidator(validatorsConfig[1])
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
+  testEthToBnc(() => users)
 
   testAddValidator(validatorsConfig[1])
 
@@ -88,4 +90,5 @@ describe('bridge tests', function () {
   testEthToBnc(() => users)
   testBncToEth(() => users)
   testEthToBncWithRestart(() => users, 2)
+  testEthToBnc(() => users)
 })

From a19ccdc68ee2c57450660ddb41273a7bdfd469f5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 6 Nov 2019 00:27:11 +0300
Subject: [PATCH 068/129] Increased prefunding amount for bridge and users

---
 tests/test/index.js | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tests/test/index.js b/tests/test/index.js
index e19698b..03d3131 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -36,25 +36,25 @@ describe('bridge tests', function () {
       bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
 
       const bnbBalance = await bncPrefundedUser.getBnbBalance()
-      assert.ok(bnbBalance >= 0.5, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 0.5 BNB, got ${bnbBalance}`)
+      assert.ok(bnbBalance >= 1, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 1 BNB, got ${bnbBalance}`)
       const bepBalance = await bncPrefundedUser.getBepBalance()
-      assert.ok(bepBalance >= 500, `Insufficient BEP2 balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 500 ${FOREIGN_ASSET}, got ${bepBalance}`)
+      assert.ok(bepBalance >= 2000, `Insufficient BEP2 balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 2000 ${FOREIGN_ASSET}, got ${bepBalance}`)
 
       const ethBalance = await ethPrefundedUser.getEthBalance()
-      assert.ok(ethBalance >= 0.5, `Insufficient ETH balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 0.5 ETH, got ${ethBalance}`)
+      assert.ok(ethBalance >= 1, `Insufficient ETH balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 1 ETH, got ${ethBalance}`)
       const ercBalance = await ethPrefundedUser.getErcBalance()
-      assert.ok(ercBalance >= 500, `Insufficient ERC20 balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 500 ERC20, got ${ercBalance}`)
+      assert.ok(ercBalance >= 2000, `Insufficient ERC20 balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 2000 ERC20, got ${ercBalance}`)
 
 
       for (let i = 0; i < 3; i += 1) {
         const userEthBalance = await users[i].getEthBalance()
-        assert.ok(userEthBalance >= 0.2, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.2 ETH, got ${userEthBalance}`)
+        assert.ok(userEthBalance >= 0.3, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.3 ETH, got ${userEthBalance}`)
         const userErcBalance = await users[i].getErcBalance()
-        assert.ok(userErcBalance >= 50, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 50 ERC20, got ${userErcBalance}`)
+        assert.ok(userErcBalance >= 200, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 200 ERC20, got ${userErcBalance}`)
         const userBnbBalance = await users[i].getBepBalance()
-        assert.ok(userBnbBalance >= 0.1, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.1 BNB, got ${userBnbBalance}`)
+        assert.ok(userBnbBalance >= 0.2, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.2 BNB, got ${userBnbBalance}`)
         const userBepBalance = await users[i].getBepBalance()
-        assert.ok(userErcBalance >= 50, `Insufficient BEP2 balance on ${users[i].bncAddress} in Binance network, expected 50 ${FOREIGN_ASSET}, got ${userBepBalance}`)
+        assert.ok(userErcBalance >= 200, `Insufficient BEP2 balance on ${users[i].bncAddress} in Binance network, expected 200 ${FOREIGN_ASSET}, got ${userBepBalance}`)
       }
     })
 
@@ -64,8 +64,8 @@ describe('bridge tests', function () {
     })
 
     after(async function () {
-      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 100, 0.1)
-      await ethPrefundedUser.transferErc(HOME_BRIDGE_ADDRESS, 100)
+      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 1000, 0.1)
+      await ethPrefundedUser.transferErc(HOME_BRIDGE_ADDRESS, 1000)
     })
   })
 

From a6354fd536fbf646f5a20bfe5ffc34e0f4519188 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 6 Nov 2019 09:03:32 +0300
Subject: [PATCH 069/129] Increased prefunding amount for bridge and users

---
 .circleci/config.yml | 4 ++--
 tests/init.sh        | 4 ++--
 tests/test/index.js  | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0160b08..b20acda 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -151,7 +151,7 @@ jobs:
           name: "Run dev environment, deploy contracts, prefund accounts"
           command: |
             BLOCK_TIME=3 ./demo/start-environment.sh
-            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
+            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
       - run:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
@@ -160,7 +160,7 @@ jobs:
           name: "Prefund bnc addresses"
           command: |
             echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
+            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
   run_tests:
     executor: bridge/node-dev
     steps:
diff --git a/tests/init.sh b/tests/init.sh
index 08a506c..d459a22 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -7,8 +7,8 @@ docker build -t tss ./src/tss
 
 ./demo/start-environment.sh
 
-cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 100
-cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 100 0.1
+cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
+cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
 
 N=1 ./demo/validator-demo.sh -d
 N=2 ./demo/validator-demo.sh -d
diff --git a/tests/test/index.js b/tests/test/index.js
index 03d3131..7f440c4 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -48,11 +48,11 @@ describe('bridge tests', function () {
 
       for (let i = 0; i < 3; i += 1) {
         const userEthBalance = await users[i].getEthBalance()
-        assert.ok(userEthBalance >= 0.3, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.3 ETH, got ${userEthBalance}`)
+        assert.ok(userEthBalance >= 0.1, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.1 ETH, got ${userEthBalance}`)
         const userErcBalance = await users[i].getErcBalance()
         assert.ok(userErcBalance >= 200, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 200 ERC20, got ${userErcBalance}`)
         const userBnbBalance = await users[i].getBepBalance()
-        assert.ok(userBnbBalance >= 0.2, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.2 BNB, got ${userBnbBalance}`)
+        assert.ok(userBnbBalance >= 0.1, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.1 BNB, got ${userBnbBalance}`)
         const userBepBalance = await users[i].getBepBalance()
         assert.ok(userErcBalance >= 200, `Insufficient BEP2 balance on ${users[i].bncAddress} in Binance network, expected 200 ${FOREIGN_ASSET}, got ${userBepBalance}`)
       }

From 6ea6df820c26c0e8219fbb414f988f4a9d081e25 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Wed, 6 Nov 2019 09:27:59 +0300
Subject: [PATCH 070/129] Retrying api request on timeout exceeded in tests

---
 tests/test/utils/bncController.js   | 10 +++++-----
 tests/test/utils/proxyController.js | 14 ++++++++------
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index d1c9122..bb2ca86 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -6,22 +6,22 @@ const { FOREIGN_URL, FOREIGN_ASSET } = process.env
 
 const bnc = axios.create({
   baseURL: FOREIGN_URL,
-  timeout: 15000
+  timeout: 10000
 })
 
 module.exports = {
   async getBnbBalance(address) {
-    const response = await retry(() => bnc.get(`/api/v1/account/${address}`), 5)
-    const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}`))
+    const tokens = response.data.balances.find((x) => x.symbol === 'BNB')
     return response && tokens ? parseFloat(tokens.free) : 0
   },
   async getBepBalance(address) {
-    const response = await retry(() => bnc.get(`/api/v1/account/${address}`), 5)
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}`))
     const tokens = response.data.balances.find((x) => x.symbol === FOREIGN_ASSET)
     return response && tokens ? parseFloat(tokens.free) : 0
   },
   async getBncSequence(address) {
-    const response = await retry(() => bnc.get(`/api/v1/account/${address}/sequence`), 5)
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}/sequence`))
     return response ? response.data.sequence : 0
   }
 }
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
index 6e3fc5c..13d03c0 100644
--- a/tests/test/utils/proxyController.js
+++ b/tests/test/utils/proxyController.js
@@ -1,5 +1,7 @@
 const axios = require('axios')
 
+const {retry} = require('./wait')
+
 function createController(validatorId) {
   const url = `http://validator${validatorId}_proxy_1:8002/`
 
@@ -10,22 +12,22 @@ function createController(validatorId) {
 
   return {
     async getInfo() {
-      return (await proxy.get('/info')).data
+      return (await retry(() => proxy.get('/info'))).data
     },
     async voteStartVoting() {
-      return (await proxy.get('/vote/startVoting')).data
+      return (await retry(() => proxy.get('/vote/startVoting'))).data
     },
     async voteStartKeygen() {
-      return (await proxy.get('/vote/startKeygen')).data
+      return (await retry(() => proxy.get('/vote/startKeygen'))).data
     },
     async voteAddValidator(validatorAddress) {
-      return (await proxy.get(`/vote/addValidator/${validatorAddress}`)).data
+      return (await retry(() => proxy.get(`/vote/addValidator/${validatorAddress}`))).data
     },
     async voteRemoveValidator(validatorAddress) {
-      return (await proxy.get(`/vote/removeValidator/${validatorAddress}`)).data
+      return (await retry(() => proxy.get(`/vote/removeValidator/${validatorAddress}`))).data
     },
     async voteChangeThreshold(threshold) {
-      return (await proxy.get(`/vote/changeThreshold/${threshold}`)).data
+      return (await retry(() => proxy.get(`/vote/changeThreshold/${threshold}`))).data
     }
   }
 }

From 37a5c1e9893b5a9d3da69d5005ef5cc22f79ac68 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 7 Nov 2019 17:06:12 +0300
Subject: [PATCH 071/129] Made bnc watcher fetch policy to be dependent on eth
 block timestamps

---
 demo/validator1/.env.development            |   2 +-
 demo/validator1/.env.staging                |   2 +-
 demo/validator2/.env.development            |   2 +-
 demo/validator2/.env.staging                |   2 +-
 demo/validator3/.env.development            |   2 +-
 demo/validator3/.env.staging                |   2 +-
 src/deploy/deploy-home/contracts/Bridge.sol |  18 ++-
 src/oracle/bncWatcher/Dockerfile            |   2 +-
 src/oracle/bncWatcher/bncWatcher.js         | 143 +++++++++++++++-----
 src/oracle/bncWatcher/package.json          |   1 +
 src/oracle/docker-compose-test.yml          |   2 +-
 src/oracle/docker-compose.yml               |   2 +-
 src/oracle/ethWatcher/ethWatcher.js         |  45 +++++-
 src/oracle/shared/.eslintrc                 |   9 ++
 src/oracle/shared/amqp.js                   |  11 +-
 src/oracle/tss-keygen/keygen.js             |   1 -
 src/oracle/tss-sign/signer.js               |   3 +-
 tests/test/utils/proxyController.js         |   2 +-
 18 files changed, 189 insertions(+), 62 deletions(-)
 create mode 100644 src/oracle/shared/.eslintrc

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 183da5a..6335b08 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 2bd353f..83a0313 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 491d22f..305ec1d 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index ed88661..94c04a1 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 014db1a..7025ee3 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index a1e5fef..458974f 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -10,7 +10,7 @@ SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
 FOREIGN_ASSET=KFT-94F
-FOREIGN_START_TIME=1572500000000
+FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
 
diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index c424563..63ce4e1 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -4,6 +4,7 @@ import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
 
 contract Bridge {
     event ExchangeRequest(uint value, uint nonce);
+    event EpochEnd(uint indexed epoch);
     event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);
     event NewEpochCancelled(uint indexed epoch);
     event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);
@@ -14,6 +15,7 @@ contract Bridge {
         uint threshold;
         uint rangeSize;
         uint startBlock;
+        uint endBlock;
         uint nonce;
         uint x;
         uint y;
@@ -65,7 +67,16 @@ contract Bridge {
         status = Status.KEYGEN;
         nextEpoch = 1;
 
-        states[nextEpoch] = State(validators, threshold, rangeSize, 0, uint(-1), 0, 0);
+        states[nextEpoch] = State({
+            validators : validators,
+            threshold : threshold,
+            rangeSize : rangeSize,
+            startBlock : 0,
+            endBlock : uint(-1),
+            nonce : uint(-1),
+            x : 0,
+            y : 0
+        });
 
         minTxLimit = limits[0];
         maxTxLimit = limits[1];
@@ -133,7 +144,7 @@ contract Bridge {
             if (nextEpoch == 1) {
                 status = Status.READY;
                 states[nextEpoch].startBlock = block.number;
-                states[nextEpoch].nonce = uint(-1);
+                states[nextEpoch].nonce = uint(- 1);
                 epoch = nextEpoch;
                 emit EpochStart(epoch, x, y);
             }
@@ -246,9 +257,12 @@ contract Bridge {
         if (tryVote(Vote.START_VOTING, epoch)) {
             nextEpoch++;
             status = Status.VOTING;
+            states[nextEpoch].endBlock = block.number;
             states[nextEpoch].threshold = getThreshold();
             states[nextEpoch].validators = getValidators();
             states[nextEpoch].rangeSize = getRangeSize();
+
+            emit EpochEnd(epoch);
         }
     }
 
diff --git a/src/oracle/bncWatcher/Dockerfile b/src/oracle/bncWatcher/Dockerfile
index 104556b..af9ce69 100644
--- a/src/oracle/bncWatcher/Dockerfile
+++ b/src/oracle/bncWatcher/Dockerfile
@@ -9,6 +9,6 @@ COPY ./bncWatcher/package.json /watcher/
 
 RUN npm install
 
-COPY ./bncWatcher/bncWatcher.js ./shared/db.js ./shared/logger.js ./shared/crypto.js ./shared/wait.js /watcher/
+COPY ./bncWatcher/bncWatcher.js ./shared/db.js ./shared/logger.js ./shared/crypto.js ./shared/amqp.js ./shared/wait.js /watcher/
 
 ENTRYPOINT ["node", "bncWatcher.js"]
diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 966d159..1320e43 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -7,25 +7,30 @@ const logger = require('./logger')
 const redis = require('./db')
 const { publicKeyToAddress } = require('./crypto')
 const { delay, retry } = require('./wait')
+const { connectRabbit, assertQueue } = require('./amqp')
 
-const { FOREIGN_URL, PROXY_URL, FOREIGN_ASSET } = process.env
+const {
+  FOREIGN_URL, PROXY_URL, FOREIGN_ASSET, RABBITMQ_URL
+} = process.env
 
-const FOREIGN_START_TIME = parseInt(process.env.FOREIGN_START_TIME, 10)
 const FOREIGN_FETCH_INTERVAL = parseInt(process.env.FOREIGN_FETCH_INTERVAL, 10)
 const FOREIGN_FETCH_BLOCK_TIME_OFFSET = parseInt(process.env.FOREIGN_FETCH_BLOCK_TIME_OFFSET, 10)
+const FOREIGN_FETCH_MAX_TIME_INTERVAL = parseInt(process.env.FOREIGN_FETCH_MAX_TIME_INTERVAL, 10)
 
 const foreignHttpClient = axios.create({ baseURL: FOREIGN_URL })
 const proxyHttpClient = axios.create({ baseURL: PROXY_URL })
 
-function getLastForeignAddress() {
-  const epoch = Math.max(0, ...fs.readdirSync('/keys')
-    .map((x) => parseInt(x.split('.')[0].substr(4), 10)))
-  if (epoch === 0) {
+let channel
+let epochTimeIntervalsQueue
+
+function getForeignAddress(epoch) {
+  const keysFile = `/keys/keys${epoch}.store`
+  try {
+    const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
+    return publicKeyToAddress(publicKey)
+  } catch (e) {
     return null
   }
-  const keysFile = `/keys/keys${epoch}.store`
-  const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
-  return publicKeyToAddress(publicKey)
 }
 
 async function getTx(hash) {
@@ -45,15 +50,8 @@ async function getBlockTime() {
   return Date.parse(response.data.block_time) - FOREIGN_FETCH_BLOCK_TIME_OFFSET
 }
 
-async function fetchNewTransactions() {
+async function fetchNewTransactions(address, startTime, endTime) {
   logger.debug('Fetching new transactions')
-  const startTime = parseInt(await redis.get('foreignTime'), 10) + 1
-  const address = getLastForeignAddress()
-  const endTime = Math.min(startTime + 3 * 30 * 24 * 60 * 60 * 1000, await getBlockTime())
-  if (address === null) {
-    return {}
-  }
-  logger.debug('Sending api transactions request')
   const params = {
     address,
     side: 'RECEIVE',
@@ -63,27 +61,101 @@ async function fetchNewTransactions() {
     endTime
   }
 
-  logger.trace('%o', params)
-  const transactions = (await retry(() => foreignHttpClient
-    .get('/api/v1/transactions', { params }))).data.tx
+  logger.trace('Transactions fetch params %o', params)
+  return (
+    await retry(() => foreignHttpClient.get('/api/v1/transactions', { params }))
+  ).data.tx
+}
 
+async function fetchTimeIntervalsQueue() {
+  let epoch = null
+  let startTime = null
+  let endTime = null
+  const lastBncBlockTime = await getBlockTime()
+  logger.trace(`Binance last block timestamp ${lastBncBlockTime}`)
+  while (true) {
+    const msg = await epochTimeIntervalsQueue.get()
+    if (msg === false) {
+      break
+    }
+    const data = JSON.parse(msg.content)
+    logger.trace('Consumed time interval event %o', data)
+    if (epoch !== null && epoch !== data.epoch) {
+      logger.warn('Two consequently events have different epochs, should not be like this')
+      channel.nack(msg, false, true)
+      break
+    }
+    if (data.startTime) {
+      logger.trace('Set foreign time', data)
+      await redis.set(`foreignTime${data.epoch}`, data.startTime)
+      channel.ack(msg)
+      break
+    }
+    if (epoch === null) {
+      epoch = data.epoch
+      startTime = await redis.get(`foreignTime${epoch}`)
+      logger.trace(`Retrieved epoch ${epoch} and start time ${startTime} from redis`)
+      if (startTime === null) {
+        logger.warn(`Empty foreign time for epoch ${epoch}`)
+      }
+    } /*
+    if (data.endTime) {
+      if (data.endTime - startTime < FOREIGN_FETCH_MAX_TIME_INTERVAL
+        && data.endTime < lastBncBlockTime) {
+        endTime = data.endTime
+        channel.ack(msg)
+      } else {
+        logger.trace('Requeuing current queue message')
+        channel.nack(msg, false, true)
+      }
+      break
+    } */
+    if (data.prolongedTime - startTime < FOREIGN_FETCH_MAX_TIME_INTERVAL
+      && data.prolongedTime < lastBncBlockTime) {
+      endTime = data.prolongedTime
+      channel.ack(msg)
+    } else {
+      logger.trace('Requeuing current queue message')
+      channel.nack(msg, false, true)
+      break
+    }
+  }
   return {
-    transactions,
+    epoch,
+    startTime,
     endTime
   }
 }
 
 async function initialize() {
-  if (await redis.get('foreignTime') === null) {
-    logger.info('Set default foreign time')
-    await redis.set('foreignTime', FOREIGN_START_TIME)
-  }
+  channel = await connectRabbit(RABBITMQ_URL)
+  logger.info('Connecting to epoch time intervals queue')
+  epochTimeIntervalsQueue = await assertQueue(channel, 'epochTimeIntervalsQueue')
 }
 
 async function loop() {
-  const { transactions, endTime } = await fetchNewTransactions()
-  if (!transactions || transactions.length === 0) {
+  const { epoch, startTime, endTime } = await fetchTimeIntervalsQueue()
+
+  if (!startTime || !endTime) {
+    logger.debug('Nothing to fetch')
+    await delay(FOREIGN_FETCH_INTERVAL)
+    return
+  }
+
+  const address = getForeignAddress(epoch)
+
+  if (!address) {
+    logger.debug('Validator is not included in current epoch')
+    await redis.set(`foreignTime${epoch}`, endTime)
+    await delay(FOREIGN_FETCH_INTERVAL)
+    return
+  }
+
+  const transactions = await fetchNewTransactions(address, startTime, endTime)
+
+  if (transactions.length === 0) {
     logger.debug('Found 0 new transactions')
+    await redis.set(`foreignTime${epoch}`, endTime)
     await delay(FOREIGN_FETCH_INTERVAL)
     return
   }
@@ -95,17 +167,16 @@ async function loop() {
     const tx = transactions[i]
     if (tx.memo !== 'funding') {
       const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
-      await proxyHttpClient
-        .post('/transfer', {
-          to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
-          value: new BN(tx.value)
-            .multipliedBy(10 ** 18)
-            .integerValue(),
-          hash: `0x${tx.txHash}`
-        })
+      await proxyHttpClient.post('/transfer', {
+        to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
+        value: new BN(tx.value)
+          .multipliedBy(10 ** 18)
+          .integerValue(),
+        hash: `0x${tx.txHash}`
+      })
     }
   }
-  await redis.set('foreignTime', endTime)
+  await redis.set(`foreignTime${epoch}`, endTime)
 }
 
 async function main() {
diff --git a/src/oracle/bncWatcher/package.json b/src/oracle/bncWatcher/package.json
index 721ea33..08a6559 100644
--- a/src/oracle/bncWatcher/package.json
+++ b/src/oracle/bncWatcher/package.json
@@ -2,6 +2,7 @@
   "name": "watcher",
   "version": "0.0.1",
   "dependencies": {
+    "amqplib": "0.5.3",
     "ioredis": "4.10.0",
     "axios": "0.19.0",
     "bech32": "1.1.3",
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 3286cba..8c7a4b0 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -103,7 +103,7 @@ services:
       - FOREIGN_ASSET
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://proxy:8001'
-      - FOREIGN_START_TIME
+      - FOREIGN_FETCH_MAX_TIME_INTERVAL
       - FOREIGN_FETCH_INTERVAL
       - FOREIGN_FETCH_BLOCK_TIME_OFFSET
       - LOG_LEVEL
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 3463f2b..38f56f7 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -112,7 +112,7 @@ services:
       - FOREIGN_ASSET
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://proxy:8001'
-      - FOREIGN_START_TIME
+      - FOREIGN_FETCH_MAX_TIME_INTERVAL
       - FOREIGN_FETCH_INTERVAL
       - FOREIGN_FETCH_BLOCK_TIME_OFFSET
       - LOG_LEVEL
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index f770fda..813ff0b 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -16,6 +16,7 @@ const HOME_MAX_FETCH_RANGE_SIZE = parseInt(process.env.HOME_MAX_FETCH_RANGE_SIZE
 const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
 const bridgeAbi = [
   'event ExchangeRequest(uint value, uint nonce)',
+  'event EpochEnd(uint indexed epoch)',
   'event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch)',
   'event NewEpochCancelled(uint indexed epoch)',
   'event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch)',
@@ -34,6 +35,7 @@ let exchangeQueue
 let signQueue
 let keygenQueue
 let cancelKeygenQueue
+let epochTimeIntervalsQueue
 let chainId
 let blockNumber
 let epoch
@@ -42,6 +44,11 @@ let redisTx
 let rangeSize
 let lastTransactionBlockNumber
 let isCurrentValidator
+let activeEpoch
+
+async function getBlockTimestamp(n) {
+  return (await provider.getBlock(n, false)).timestamp
+}
 
 async function resetFutureMessages(queue) {
   logger.debug(`Resetting future messages in queue ${queue.name}`)
@@ -169,8 +176,7 @@ async function processEpochStart(event) {
   epochStart = blockNumber
   logger.info(`Epoch ${epoch} started`)
   rangeSize = (await bridge.getRangeSize()).toNumber()
-  isCurrentValidator = (await bridge.getValidators())
-    .includes(validatorAddress)
+  isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -186,6 +192,9 @@ async function initialize() {
   signQueue = await assertQueue(channel, 'signQueue')
   keygenQueue = await assertQueue(channel, 'keygenQueue')
   cancelKeygenQueue = await assertQueue(channel, 'cancelKeygenQueue')
+  epochTimeIntervalsQueue = await assertQueue(channel, 'epochTimeIntervalsQueue')
+
+  activeEpoch = !!(await redis.get('activeEpoch'))
 
   chainId = (await provider.getNetwork()).chainId
 
@@ -228,6 +237,7 @@ async function initialize() {
   await resetFutureMessages(cancelKeygenQueue)
   await resetFutureMessages(exchangeQueue)
   await resetFutureMessages(signQueue)
+  await resetFutureMessages(epochTimeIntervalsQueue)
   logger.debug('Sending start commands')
   await axios.get('http://keygen:8001/start')
   await axios.get('http://signer:8001/start')
@@ -255,9 +265,11 @@ async function loop() {
   }))
 
   for (let curBlockNumber = blockNumber, i = 0; curBlockNumber <= endBlock; curBlockNumber += 1) {
+    let epochTimeUpdated = false
+    const curBlockTimestamp = await getBlockTimestamp(curBlockNumber)
     while (i < bridgeEvents.length && bridgeEvents[i].blockNumber === curBlockNumber) {
       const event = bridge.interface.parseLog(bridgeEvents[i])
-      logger.debug('%o %o', event, bridgeEvents[i])
+      logger.trace('Consumed event %o %o', event, bridgeEvents[i])
       switch (event.name) {
         case 'NewEpoch':
           await sendKeygen(event)
@@ -277,12 +289,39 @@ async function loop() {
           break
         case 'EpochStart':
           await processEpochStart(event)
+          await redis.set('activeEpoch', true)
+          activeEpoch = true
+          epochTimeIntervalsQueue.send({
+            blockNumber: curBlockNumber,
+            startTime: curBlockTimestamp * 1000,
+            epoch
+          })
+          epochTimeUpdated = true
+          break
+        case 'EpochEnd':
+          logger.debug(`Consumed epoch ${epoch} end event`)
+          await redis.set('activeEpoch', false)
+          activeEpoch = false
+          epochTimeIntervalsQueue.send({
+            blockNumber: curBlockNumber,
+            prolongedTime: curBlockTimestamp * 1000,
+            epoch
+          })
           break
         default:
           logger.warn('Unknown event %o', event)
       }
       i += 1
     }
+
+    if (!epochTimeUpdated && epoch > 0 && activeEpoch) {
+      epochTimeIntervalsQueue.send({
+        blockNumber: curBlockNumber,
+        prolongedTime: curBlockTimestamp * 1000,
+        epoch
+      })
+    }
+
     if ((curBlockNumber + 1 - epochStart) % rangeSize === 0) {
       logger.info('Reached end of the current block range')
 
diff --git a/src/oracle/shared/.eslintrc b/src/oracle/shared/.eslintrc
new file mode 100644
index 0000000..54d0153
--- /dev/null
+++ b/src/oracle/shared/.eslintrc
@@ -0,0 +1,9 @@
+{
+  "extends": [
+    "../../../.eslintrc"
+  ],
+  "rules": {
+    "import/no-extraneous-dependencies": 0,
+    "node/no-extraneous-require": 0
+  }
+}
diff --git a/src/oracle/shared/amqp.js b/src/oracle/shared/amqp.js
index e6a88d9..e05c37f 100644
--- a/src/oracle/shared/amqp.js
+++ b/src/oracle/shared/amqp.js
@@ -1,16 +1,11 @@
 const amqp = require('amqplib')
 
 const logger = require('./logger')
+const { retry } = require('./wait')
 
 async function connectRabbit(url) {
-  while (true) {
-    try {
-      return (await amqp.connect(url)).createChannel()
-    } catch (e) {
-      logger.debug('Failed to connect to rabbitmqServer, reconnecting')
-      await new Promise((resolve) => setTimeout(resolve, 2000))
-    }
-  }
+  logger.info('Connecting to RabbitMQ server')
+  return (await retry(() => amqp.connect(url))).createChannel()
 }
 
 async function assertQueue(channel, name) {
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 2315936..0f16b9e 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -19,7 +19,6 @@ async function confirmKeygen(keysFile) {
 }
 
 async function main() {
-  logger.info('Connecting to RabbitMQ server')
   const channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to epoch events queue')
   const keygenQueue = await assertQueue(channel, 'keygenQueue')
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index b23ce4f..1b89ae5 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -130,7 +130,7 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
   let nonceInterrupt = false
   return new Promise((resolve) => {
     const cmd = exec.execFile('./sign-entrypoint.sh', [PROXY_URL, keysFile, hash], async (error) => {
-      logger.debug('%o', error)
+      logger.trace('Sign entrypoint exited, %o', error)
       clearInterval(nonceDaemonIntervalId)
       clearTimeout(restartTimeoutId)
       if (fs.existsSync('signature')) { // if signature was generated
@@ -195,7 +195,6 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
 }
 
 async function main() {
-  logger.info('Connecting to RabbitMQ server')
   channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to signature events queue')
   exchangeQueue = await assertQueue(channel, 'exchangeQueue')
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
index 13d03c0..3dac478 100644
--- a/tests/test/utils/proxyController.js
+++ b/tests/test/utils/proxyController.js
@@ -1,6 +1,6 @@
 const axios = require('axios')
 
-const {retry} = require('./wait')
+const { retry } = require('./wait')
 
 function createController(validatorId) {
   const url = `http://validator${validatorId}_proxy_1:8002/`

From d00d78ec6c379b1def8b07ca87b71577e84e7ae6 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 8 Nov 2019 11:38:53 +0300
Subject: [PATCH 072/129] Created initial docker configurations for running dev
 binance testnet inside test environment

---
 src/binance-testnet/api-server/Dockerfile   | 11 +++++++
 src/binance-testnet/api-server/index.js     | 12 +++++++
 src/binance-testnet/api-server/package.json | 11 +++++++
 src/binance-testnet/docker-compose.yml      | 21 +++++++++++++
 src/binance-testnet/run.sh                  |  6 ++++
 src/binance-testnet/testnet/Dockerfile      | 35 +++++++++++++++++++++
 src/oracle/docker-compose-test.yml          |  4 +--
 src/oracle/docker-compose.yml               |  4 +--
 8 files changed, 100 insertions(+), 4 deletions(-)
 create mode 100644 src/binance-testnet/api-server/Dockerfile
 create mode 100644 src/binance-testnet/api-server/index.js
 create mode 100644 src/binance-testnet/api-server/package.json
 create mode 100644 src/binance-testnet/docker-compose.yml
 create mode 100755 src/binance-testnet/run.sh
 create mode 100644 src/binance-testnet/testnet/Dockerfile

diff --git a/src/binance-testnet/api-server/Dockerfile b/src/binance-testnet/api-server/Dockerfile
new file mode 100644
index 0000000..885fdc2
--- /dev/null
+++ b/src/binance-testnet/api-server/Dockerfile
@@ -0,0 +1,11 @@
+FROM node:10.16.0-alpine
+
+WORKDIR /api-server
+
+COPY ./package.json ./
+
+RUN npm install
+
+COPY ./index.js ./
+
+ENTRYPOINT ["node", "./index.js"]
diff --git a/src/binance-testnet/api-server/index.js b/src/binance-testnet/api-server/index.js
new file mode 100644
index 0000000..fad99a8
--- /dev/null
+++ b/src/binance-testnet/api-server/index.js
@@ -0,0 +1,12 @@
+const fs = require('fs')
+const express = require('express')
+
+const app = express()
+
+app.get('/', (req, res) => {
+  res.send(fs.readFileSync('./marketdata/marketdata.json').toString())
+})
+
+app.listen(8000, () => {
+  console.log('Listening on port 8000')
+})
diff --git a/src/binance-testnet/api-server/package.json b/src/binance-testnet/api-server/package.json
new file mode 100644
index 0000000..0be9173
--- /dev/null
+++ b/src/binance-testnet/api-server/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "api-server",
+  "version": "0.0.1",
+  "dependencies": {
+    "express": "4.17.1",
+    "axios": "0.19.0"
+  },
+  "engines": {
+    "node": ">=10.6.0"
+  }
+}
diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
new file mode 100644
index 0000000..a90d997
--- /dev/null
+++ b/src/binance-testnet/docker-compose.yml
@@ -0,0 +1,21 @@
+version: '3.0'
+services:
+  testnet:
+    build: ./testnet
+    image: bnc-testnet
+    volumes:
+      - 'marketdata:/root/.bnbchaind/marketdata'
+  api-server:
+    build: ./api-server
+    image: bnc-api-server
+    networks:
+      - binance_net
+    ports:
+      - '8000:8000'
+    volumes:
+      - 'marketdata:/api-server/marketdata'
+networks:
+  binance_net:
+    external: true
+volumes:
+  marketdata:
diff --git a/src/binance-testnet/run.sh b/src/binance-testnet/run.sh
new file mode 100755
index 0000000..f1191a9
--- /dev/null
+++ b/src/binance-testnet/run.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -e
+
+docker network create binance_net > /dev/null 2>&1 || true
+docker-compose up --build
diff --git a/src/binance-testnet/testnet/Dockerfile b/src/binance-testnet/testnet/Dockerfile
new file mode 100644
index 0000000..a7425b5
--- /dev/null
+++ b/src/binance-testnet/testnet/Dockerfile
@@ -0,0 +1,35 @@
+FROM ubuntu:19.10 as build
+
+ARG BNC_VERSION=0.6.2
+
+RUN apt-get update && \
+    apt-get install -y git git-lfs
+
+WORKDIR /binaries
+
+RUN GIT_LFS_SKIP_SMUDGE=1 git clone --depth 1 https://github.com/binance-chain/node-binary.git .
+
+RUN git lfs pull -I fullnode/testnet/${BNC_VERSION}/linux
+RUN git lfs pull -I cli/testnet/${BNC_VERSION}/linux
+
+RUN ./fullnode/testnet/${BNC_VERSION}/linux/bnbchaind testnet --acc-prefix tbnb --chain-id Binance-Dev --v 1
+
+RUN sed -i "s/publishTransfer = false/publishTransfer = true/" ./mytestnet/node0/gaiad/config/app.toml && \
+    sed -i "s/publishLocal = false/publishLocal = true/" ./mytestnet/node0/gaiad/config/app.toml
+
+#echo 12345678 | docker exec -i 5f6f653730442d81b6e34a82ac3dc8a82f071c1eec130bc09a0dca803ad00bd2 ./tbnbcli send --to tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym --amount 100:BNB --from node0 --chain-id Binance-Dev --json
+
+FROM alpine:3.9.4
+
+ARG BNC_VERSION=0.6.2
+
+WORKDIR /bnc
+
+COPY --from=build /binaries/fullnode/testnet/${BNC_VERSION}/linux/bnbchaind ./
+COPY --from=build /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
+COPY --from=build /binaries/mytestnet/node0/gaiacli /root/.bnbcli
+COPY --from=build /binaries/mytestnet/node0/gaiad /root/.bnbchaind
+
+EXPOSE 26657
+
+ENTRYPOINT ["./bnbchaind", "start"]
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 8c7a4b0..d331ee7 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -15,8 +15,8 @@ services:
       - FOREIGN_URL
       - FOREIGN_ASSET
       - LOG_LEVEL
-      - "GAS_LIMIT_FACTOR=3"
-      - "MAX_GAS_LIMIT=6000000"
+      - 'GAS_LIMIT_FACTOR=3'
+      - 'MAX_GAS_LIMIT=6000000'
     ports:
       - '${VOTES_PROXY_PORT}:8002'
     networks:
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 38f56f7..2867def 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -15,8 +15,8 @@ services:
       - FOREIGN_URL
       - FOREIGN_ASSET
       - LOG_LEVEL
-      - "GAS_LIMIT_FACTOR=3"
-      - "MAX_GAS_LIMIT=6000000"
+      - 'GAS_LIMIT_FACTOR=3'
+      - 'MAX_GAS_LIMIT=6000000'
     ports:
       - '${VOTES_PROXY_PORT}:8002'
     networks:

From 64e4d5e9f167ac970ebfab007fbdb355a8fdb20a Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 8 Nov 2019 11:42:56 +0300
Subject: [PATCH 073/129] Added network for node rpc communication

---
 src/binance-testnet/docker-compose.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
index a90d997..c923940 100644
--- a/src/binance-testnet/docker-compose.yml
+++ b/src/binance-testnet/docker-compose.yml
@@ -3,6 +3,8 @@ services:
   testnet:
     build: ./testnet
     image: bnc-testnet
+    networks:
+      - binance_rpc_net
     volumes:
       - 'marketdata:/root/.bnbchaind/marketdata'
   api-server:
@@ -10,6 +12,7 @@ services:
     image: bnc-api-server
     networks:
       - binance_net
+      - binance_rpc_net
     ports:
       - '8000:8000'
     volumes:
@@ -17,5 +20,6 @@ services:
 networks:
   binance_net:
     external: true
+  binance_rpc_net:
 volumes:
   marketdata:

From e83287489122b2c02280223e9625f1528fd257cc Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 8 Nov 2019 16:02:47 +0300
Subject: [PATCH 074/129] Implemented /api/v1/tx mock

---
 package.json                                 |  4 ++
 src/binance-testnet/{testnet => }/Dockerfile | 17 -----
 src/binance-testnet/api-server/Dockerfile    |  4 ++
 src/binance-testnet/api-server/index.js      | 67 +++++++++++++++++++-
 src/binance-testnet/docker-compose.yml       |  6 +-
 src/binance-testnet/node/Dockerfile          | 15 +++++
 src/binance-testnet/run.sh                   |  3 +
 7 files changed, 95 insertions(+), 21 deletions(-)
 rename src/binance-testnet/{testnet => }/Dockerfile (51%)
 create mode 100644 src/binance-testnet/node/Dockerfile

diff --git a/package.json b/package.json
index e954bd9..38bf0fb 100644
--- a/package.json
+++ b/package.json
@@ -10,5 +10,9 @@
   },
   "engines": {
     "node": ">=10.6.0"
+  },
+  "dependencies": {
+    "@binance-chain/javascript-sdk": "^2.16.1",
+    "@tendermint/amino-js": "^0.4.5"
   }
 }
diff --git a/src/binance-testnet/testnet/Dockerfile b/src/binance-testnet/Dockerfile
similarity index 51%
rename from src/binance-testnet/testnet/Dockerfile
rename to src/binance-testnet/Dockerfile
index a7425b5..fa8a813 100644
--- a/src/binance-testnet/testnet/Dockerfile
+++ b/src/binance-testnet/Dockerfile
@@ -16,20 +16,3 @@ RUN ./fullnode/testnet/${BNC_VERSION}/linux/bnbchaind testnet --acc-prefix tbnb
 
 RUN sed -i "s/publishTransfer = false/publishTransfer = true/" ./mytestnet/node0/gaiad/config/app.toml && \
     sed -i "s/publishLocal = false/publishLocal = true/" ./mytestnet/node0/gaiad/config/app.toml
-
-#echo 12345678 | docker exec -i 5f6f653730442d81b6e34a82ac3dc8a82f071c1eec130bc09a0dca803ad00bd2 ./tbnbcli send --to tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym --amount 100:BNB --from node0 --chain-id Binance-Dev --json
-
-FROM alpine:3.9.4
-
-ARG BNC_VERSION=0.6.2
-
-WORKDIR /bnc
-
-COPY --from=build /binaries/fullnode/testnet/${BNC_VERSION}/linux/bnbchaind ./
-COPY --from=build /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
-COPY --from=build /binaries/mytestnet/node0/gaiacli /root/.bnbcli
-COPY --from=build /binaries/mytestnet/node0/gaiad /root/.bnbchaind
-
-EXPOSE 26657
-
-ENTRYPOINT ["./bnbchaind", "start"]
diff --git a/src/binance-testnet/api-server/Dockerfile b/src/binance-testnet/api-server/Dockerfile
index 885fdc2..05773ce 100644
--- a/src/binance-testnet/api-server/Dockerfile
+++ b/src/binance-testnet/api-server/Dockerfile
@@ -1,7 +1,11 @@
 FROM node:10.16.0-alpine
 
+ARG BNC_VERSION=0.6.2
+
 WORKDIR /api-server
 
+COPY --from=testnet-binaries /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
+
 COPY ./package.json ./
 
 RUN npm install
diff --git a/src/binance-testnet/api-server/index.js b/src/binance-testnet/api-server/index.js
index fad99a8..7e1819f 100644
--- a/src/binance-testnet/api-server/index.js
+++ b/src/binance-testnet/api-server/index.js
@@ -1,10 +1,73 @@
 const fs = require('fs')
 const express = require('express')
+const axios = require('axios')
+const { execSync } = require('child_process')
+
+const rpcClient = axios.create({
+  baseURL: process.env.FOREIGN_RPC_URL,
+  timeout: 10000
+})
+
+async function delay(ms) {
+  await new Promise((res) => setTimeout(res, ms))
+}
+
+async function retry(getPromise, n = -1, sleep = 3000) {
+  while (n) {
+    try {
+      return await getPromise()
+    } catch (e) {
+      console.debug(`Promise failed, retrying, ${n - 1} attempts left`)
+      await delay(sleep)
+      // eslint-disable-next-line no-param-reassign
+      n -= 1
+    }
+  }
+  return null
+}
+
+async function sendRpcRequest(subUrl, method, params) {
+  console.trace(`Request to ${subUrl}, method ${method}, params `, params)
+  const response = await retry(() => rpcClient.post(subUrl, {
+    jsonrpc: '2.0',
+    method,
+    params,
+    id: 1
+  }))
+  console.trace('Response, ', response.data)
+  return response.data
+}
 
 const app = express()
 
-app.get('/', (req, res) => {
-  res.send(fs.readFileSync('./marketdata/marketdata.json').toString())
+// GET
+// /api/v1/tx/:hash
+// /api/v1/time
+// /api/v1/transactions
+// ?address=a&side=RECEIVE&txAsset=FOREIGN_ASSET&txType=TRANSFER&startTime=111&endTime=222
+// /api/v1/account/:account
+// /api/v1/account/:account/sequence
+// POST
+// /api/v1/broadcast?sync=true
+
+app.get('/api/v1/tx/:hash', async (req, res) => {
+  try {
+    const {
+      tx, hash, height, result
+    } = JSON.parse(
+      execSync(`./tbnbcli tx ${req.params.hash} --node "http://node:26657" --chain-id Binance-Dev`)
+    )
+    res.send({
+      code: 0,
+      hash,
+      height,
+      log: result.log,
+      ok: true,
+      tx
+    })
+  } catch (e) {
+    res.status(404).end()
+  }
 })
 
 app.listen(8000, () => {
diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
index c923940..feb560a 100644
--- a/src/binance-testnet/docker-compose.yml
+++ b/src/binance-testnet/docker-compose.yml
@@ -1,10 +1,12 @@
 version: '3.0'
 services:
-  testnet:
-    build: ./testnet
+  node:
+    build: node
     image: bnc-testnet
     networks:
       - binance_rpc_net
+    ports:
+      - '26657:26657'
     volumes:
       - 'marketdata:/root/.bnbchaind/marketdata'
   api-server:
diff --git a/src/binance-testnet/node/Dockerfile b/src/binance-testnet/node/Dockerfile
new file mode 100644
index 0000000..fabf1b2
--- /dev/null
+++ b/src/binance-testnet/node/Dockerfile
@@ -0,0 +1,15 @@
+#echo 12345678 | docker exec -i 5f6f653730442d81b6e34a82ac3dc8a82f071c1eec130bc09a0dca803ad00bd2 ./tbnbcli send --to tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym --amount 100:BNB --from node0 --chain-id Binance-Dev --json
+FROM alpine:3.9.4
+
+ARG BNC_VERSION=0.6.2
+
+WORKDIR /bnc
+
+COPY --from=testnet-binaries /binaries/fullnode/testnet/${BNC_VERSION}/linux/bnbchaind ./
+COPY --from=testnet-binaries /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
+COPY --from=testnet-binaries /binaries/mytestnet/node0/gaiacli /root/.bnbcli
+COPY --from=testnet-binaries /binaries/mytestnet/node0/gaiad /root/.bnbchaind
+
+EXPOSE 26657
+
+ENTRYPOINT ["./bnbchaind", "start"]
diff --git a/src/binance-testnet/run.sh b/src/binance-testnet/run.sh
index f1191a9..a8ddf37 100755
--- a/src/binance-testnet/run.sh
+++ b/src/binance-testnet/run.sh
@@ -3,4 +3,7 @@
 set -e
 
 docker network create binance_net > /dev/null 2>&1 || true
+
+docker build -t testnet-binaries .
+
 docker-compose up --build

From 6b43434f53be4665fa2e9a2639c0cbd5e911c1bf Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sat, 9 Nov 2019 15:11:39 +0300
Subject: [PATCH 075/129] Implemented remaining stubs for api

---
 src/binance-testnet/api-server/Dockerfile     |   8 +-
 src/binance-testnet/api-server/index.js       |  75 -----------
 src/binance-testnet/docker-compose.yml        |  14 +-
 src/binance-testnet/http-api/Dockerfile       |  15 +++
 src/binance-testnet/http-api/index.js         | 125 ++++++++++++++++++
 .../{api-server => http-api}/package.json     |   3 +-
 src/binance-testnet/http-api/parser.js        |  44 ++++++
 7 files changed, 201 insertions(+), 83 deletions(-)
 delete mode 100644 src/binance-testnet/api-server/index.js
 create mode 100644 src/binance-testnet/http-api/Dockerfile
 create mode 100644 src/binance-testnet/http-api/index.js
 rename src/binance-testnet/{api-server => http-api}/package.json (73%)
 create mode 100644 src/binance-testnet/http-api/parser.js

diff --git a/src/binance-testnet/api-server/Dockerfile b/src/binance-testnet/api-server/Dockerfile
index 05773ce..1ea7aef 100644
--- a/src/binance-testnet/api-server/Dockerfile
+++ b/src/binance-testnet/api-server/Dockerfile
@@ -6,10 +6,8 @@ WORKDIR /api-server
 
 COPY --from=testnet-binaries /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
 
-COPY ./package.json ./
+RUN echo 12345678 | ./tbnbcli keys add key
 
-RUN npm install
+EXPOSE 8080
 
-COPY ./index.js ./
-
-ENTRYPOINT ["node", "./index.js"]
+ENTRYPOINT ["./tbnbcli", "api-server", "--chain-id", "Binance-Dev", "--node", "http://node:26657", "--laddr", "tcp://0.0.0.0:8080"]
diff --git a/src/binance-testnet/api-server/index.js b/src/binance-testnet/api-server/index.js
deleted file mode 100644
index 7e1819f..0000000
--- a/src/binance-testnet/api-server/index.js
+++ /dev/null
@@ -1,75 +0,0 @@
-const fs = require('fs')
-const express = require('express')
-const axios = require('axios')
-const { execSync } = require('child_process')
-
-const rpcClient = axios.create({
-  baseURL: process.env.FOREIGN_RPC_URL,
-  timeout: 10000
-})
-
-async function delay(ms) {
-  await new Promise((res) => setTimeout(res, ms))
-}
-
-async function retry(getPromise, n = -1, sleep = 3000) {
-  while (n) {
-    try {
-      return await getPromise()
-    } catch (e) {
-      console.debug(`Promise failed, retrying, ${n - 1} attempts left`)
-      await delay(sleep)
-      // eslint-disable-next-line no-param-reassign
-      n -= 1
-    }
-  }
-  return null
-}
-
-async function sendRpcRequest(subUrl, method, params) {
-  console.trace(`Request to ${subUrl}, method ${method}, params `, params)
-  const response = await retry(() => rpcClient.post(subUrl, {
-    jsonrpc: '2.0',
-    method,
-    params,
-    id: 1
-  }))
-  console.trace('Response, ', response.data)
-  return response.data
-}
-
-const app = express()
-
-// GET
-// /api/v1/tx/:hash
-// /api/v1/time
-// /api/v1/transactions
-// ?address=a&side=RECEIVE&txAsset=FOREIGN_ASSET&txType=TRANSFER&startTime=111&endTime=222
-// /api/v1/account/:account
-// /api/v1/account/:account/sequence
-// POST
-// /api/v1/broadcast?sync=true
-
-app.get('/api/v1/tx/:hash', async (req, res) => {
-  try {
-    const {
-      tx, hash, height, result
-    } = JSON.parse(
-      execSync(`./tbnbcli tx ${req.params.hash} --node "http://node:26657" --chain-id Binance-Dev`)
-    )
-    res.send({
-      code: 0,
-      hash,
-      height,
-      log: result.log,
-      ok: true,
-      tx
-    })
-  } catch (e) {
-    res.status(404).end()
-  }
-})
-
-app.listen(8000, () => {
-  console.log('Listening on port 8000')
-})
diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
index feb560a..f4917b5 100644
--- a/src/binance-testnet/docker-compose.yml
+++ b/src/binance-testnet/docker-compose.yml
@@ -10,15 +10,25 @@ services:
     volumes:
       - 'marketdata:/root/.bnbchaind/marketdata'
   api-server:
-    build: ./api-server
+    build: api-server
     image: bnc-api-server
+    networks:
+      - binance_rpc_net
+    ports:
+      - '8080:8080'
+  http-api:
+    build: http-api
+    image: bnc-http-api
+    environment:
+      FOREIGN_RPC_URL: 'http://node:26657'
+      FOREIGN_API_SERVER_URL: 'http://api-server:8080'
     networks:
       - binance_net
       - binance_rpc_net
     ports:
       - '8000:8000'
     volumes:
-      - 'marketdata:/api-server/marketdata'
+      - 'marketdata:/http-api/marketdata'
 networks:
   binance_net:
     external: true
diff --git a/src/binance-testnet/http-api/Dockerfile b/src/binance-testnet/http-api/Dockerfile
new file mode 100644
index 0000000..1be9e4c
--- /dev/null
+++ b/src/binance-testnet/http-api/Dockerfile
@@ -0,0 +1,15 @@
+FROM node:10.16.0-alpine
+
+ARG BNC_VERSION=0.6.2
+
+WORKDIR /http-api
+
+COPY --from=testnet-binaries /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
+
+COPY ./package.json ./
+
+RUN npm install
+
+COPY ./index.js ./parser.js ./
+
+ENTRYPOINT ["node", "./index.js"]
diff --git a/src/binance-testnet/http-api/index.js b/src/binance-testnet/http-api/index.js
new file mode 100644
index 0000000..49de564
--- /dev/null
+++ b/src/binance-testnet/http-api/index.js
@@ -0,0 +1,125 @@
+const { execSync } = require('child_process')
+
+const express = require('express')
+const axios = require('axios')
+const BN = require('bignumber.js')
+
+const createParser = require('./parser')
+
+const rpcClient = axios.create({
+  baseURL: process.env.FOREIGN_RPC_URL,
+  timeout: 10000
+})
+
+const apiClient = axios.create({
+  baseURL: process.env.FOREIGN_API_SERVER_URL,
+  timeout: 10000
+})
+
+const transfers = []
+
+const parser = createParser('/http-api/marketdata/marketdata.json', 20 * 1024)
+parser.eventEmitter.on('object', (obj) => {
+  obj.Transfers.forEach((event) => {
+    // eslint-disable-next-line no-param-reassign
+    event.Timestamp = Math.ceil(obj.Timestamp / 1000)
+    transfers.push(event)
+  })
+})
+
+const app = express()
+app.use(express.json())
+app.use(express.urlencoded({ extended: true }))
+
+function wrap(f) {
+  return async (req, res) => {
+    try {
+      await f(req, res)
+    } catch (e) {
+      res.status(404).end()
+    }
+  }
+}
+
+async function handleTx(req, res) {
+  const {
+    tx, hash, height, result
+  } = JSON.parse(
+    execSync(`./tbnbcli tx ${req.params.hash} --node "http://node:26657" --chain-id Binance-Dev`)
+  )
+  res.send({
+    code: 0,
+    hash,
+    height,
+    log: result.log,
+    ok: true,
+    tx
+  })
+}
+
+async function handleTransactions(req, res) {
+  // eslint-disable-next-line no-empty
+  while (parser.update()) {}
+  const {
+    address, side, txAsset, txType, startTime, endTime
+  } = req.query
+  if (txType !== 'TRANSFER' || side !== 'RECEIVE') {
+    res.status(400).send('Given parameters are not supported')
+  }
+  const filtered = transfers.filter((event) => event.Timestamp >= parseInt(startTime, 10)
+    && event.Timestamp <= parseInt(endTime, 10)
+    && event.To.length === 1
+    && event.To[0].Addr === address
+    && event.To[0].Coins.length === 1
+    && event.To[0].Coins[0].denom === txAsset)
+  res.send({
+    tx: filtered.map((tx) => ({
+      txHash: tx.TxHash,
+      memo: tx.Memo,
+      value: new BN(tx.To[0].Coins[0].amount).dividedBy(10 ** 8).toFixed(8, 3)
+    })),
+    total: filtered.length
+  })
+}
+
+async function handleTime(req, res) {
+  const response = (await rpcClient.get('/status')).data
+  res.send({
+    ap_time: response.result.sync_info.latest_block_time,
+    block_time: response.result.sync_info.latest_block_time
+  })
+}
+
+async function handleAccount(req, res) {
+  const response = (await apiClient.get(`/api/v1/account/${req.params.account}`)).data
+  res.send(response)
+}
+
+async function handleAccountSequence(req, res) {
+  const response = (await apiClient.get(`/api/v1/account/${req.params.account}`)).data
+  res.send(response.sequence.toString())
+}
+
+async function handleBroadcast(req, res) {
+  if (req.query.sync !== 'true') {
+    res.status(400).send('Async broadcast is not supported')
+  } else {
+    const response = (await rpcClient.get('/broadcast_tx_sync', {
+      params: {
+        tx: req.body
+      }
+    })).data
+    res.send(response.result)
+  }
+}
+
+app.get('/api/v1/tx/:hash', wrap(handleTx))
+app.get('/api/v1/time', wrap(handleTime))
+app.get('/api/v1/transactions', wrap(handleTransactions))
+app.get('/api/v1/account/:account', wrap(handleAccount))
+app.get('/api/v1/account/:account/sequence', wrap(handleAccountSequence))
+app.post('/api/v1/broadcast', wrap(handleBroadcast))
+
+app.listen(8000, () => {
+  console.log('Listening on port 8000')
+})
diff --git a/src/binance-testnet/api-server/package.json b/src/binance-testnet/http-api/package.json
similarity index 73%
rename from src/binance-testnet/api-server/package.json
rename to src/binance-testnet/http-api/package.json
index 0be9173..d776fa9 100644
--- a/src/binance-testnet/api-server/package.json
+++ b/src/binance-testnet/http-api/package.json
@@ -3,7 +3,8 @@
   "version": "0.0.1",
   "dependencies": {
     "express": "4.17.1",
-    "axios": "0.19.0"
+    "axios": "0.19.0",
+    "bignumber.js": "9.0.0"
   },
   "engines": {
     "node": ">=10.6.0"
diff --git a/src/binance-testnet/http-api/parser.js b/src/binance-testnet/http-api/parser.js
new file mode 100644
index 0000000..fc88586
--- /dev/null
+++ b/src/binance-testnet/http-api/parser.js
@@ -0,0 +1,44 @@
+const events = require('events')
+const fs = require('fs')
+
+function createParser(file, bufferSize) {
+  const buf = Buffer.alloc(bufferSize)
+  const eventEmitter = new events.EventEmitter()
+  let fd
+  let position = 0
+  let end = 0
+
+  return {
+    update() {
+      if (!fd) {
+        try {
+          fd = fs.openSync(file, 'r')
+        } catch (e) {
+          return 0
+        }
+      }
+      const bytesRead = fs.readSync(fd, buf, position, buf.length - position, null)
+      for (let i = position; i < position + bytesRead; i += 1) {
+        if (buf[i] === 10) {
+          const obj = buf.slice(end, i)
+          end = i + 1
+          eventEmitter.emit('object', JSON.parse(obj))
+        }
+      }
+      position += bytesRead
+
+      if (buf.length - position < bufferSize / 2) {
+        buf.copy(buf, 0, end, position)
+        position -= end
+        end = 0
+      }
+      return bytesRead
+    },
+    close() {
+      fs.closeSync(fd)
+    },
+    eventEmitter
+  }
+}
+
+module.exports = createParser

From 591cdf88f32acd216eaedf03fb1cba8e60b57e80 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sat, 9 Nov 2019 15:14:06 +0300
Subject: [PATCH 076/129] Added binance_net network in docker configs, updated
 validator configs

---
 demo/validator1/.env.development              | 10 ++++---
 demo/validator2/.env.development              | 10 ++++---
 demo/validator3/.env.development              | 10 ++++---
 package.json                                  |  4 ---
 src/binance-testnet/run.sh                    | 27 +++++++++++++++++--
 src/oracle/docker-compose-test.yml            |  5 ++++
 .../binanceSend/.env.development              |  2 +-
 7 files changed, 52 insertions(+), 16 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 6335b08..2987613 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -7,9 +7,13 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_CHAIN_ID=Binance-Chain-Nile
-FOREIGN_ASSET=KFT-94F
+#FOREIGN_URL=https://testnet-dex.binance.org/
+#FOREIGN_CHAIN_ID=Binance-Chain-Nile
+#FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://node:8000
+FOREIGN_CHAIN_ID=Binance-Dev
+FOREIGN_ASSET=DEV-996
+
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 305ec1d..d250505 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -7,9 +7,13 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_CHAIN_ID=Binance-Chain-Nile
-FOREIGN_ASSET=KFT-94F
+#FOREIGN_URL=https://testnet-dex.binance.org/
+#FOREIGN_CHAIN_ID=Binance-Chain-Nile
+#FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://node:8000
+FOREIGN_CHAIN_ID=Binance-Dev
+FOREIGN_ASSET=DEV-996
+
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 7025ee3..6ee1766 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -7,9 +7,13 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_CHAIN_ID=Binance-Chain-Nile
-FOREIGN_ASSET=KFT-94F
+#FOREIGN_URL=https://testnet-dex.binance.org/
+#FOREIGN_CHAIN_ID=Binance-Chain-Nile
+#FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://node:8000
+FOREIGN_CHAIN_ID=Binance-Dev
+FOREIGN_ASSET=DEV-996
+
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/package.json b/package.json
index 38bf0fb..e954bd9 100644
--- a/package.json
+++ b/package.json
@@ -10,9 +10,5 @@
   },
   "engines": {
     "node": ">=10.6.0"
-  },
-  "dependencies": {
-    "@binance-chain/javascript-sdk": "^2.16.1",
-    "@tendermint/amino-js": "^0.4.5"
   }
 }
diff --git a/src/binance-testnet/run.sh b/src/binance-testnet/run.sh
index a8ddf37..7216460 100755
--- a/src/binance-testnet/run.sh
+++ b/src/binance-testnet/run.sh
@@ -2,8 +2,31 @@
 
 set -e
 
+tbnbcli() {
+    echo 12345678 | docker exec -i binance-testnet_node_1 ./tbnbcli $@ --from node0 --node http://node:26657 --chain-id Binance-Dev --json
+}
+
+echo "Removing old environment"
+docker kill $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker volume rm binance-testnet_marketdata > /dev/null 2>&1 || true
+
 docker network create binance_net > /dev/null 2>&1 || true
 
-docker build -t testnet-binaries .
+echo "Building required binaries"
+docker build -t testnet-binaries . > /dev/null 2>&1 || true
 
-docker-compose up --build
+echo "Running environment"
+docker-compose up --build -d
+
+sleep 2
+
+echo "Issuing test asset"
+ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --token-name "DEV Token" | jq .Response.log)
+TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
+echo "Issued $TOKEN_SYMBOL"
+
+sleep 2
+
+echo "Sending tokens to controlled address"
+tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
\ No newline at end of file
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index d331ee7..c626a47 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -23,6 +23,7 @@ services:
       - test_network
       - blockchain_home
       - blockchain_side
+      - binance_net
   keygen:
     image: keygen-client
     build:
@@ -57,6 +58,7 @@ services:
       - '${SIGN_RESTART_PORT}:8001'
     networks:
       - test_network
+      - binance_net
   redis:
     image: redis
     build:
@@ -111,9 +113,12 @@ services:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
     networks:
       - test_network
+      - binance_net
 networks:
   test_network:
   blockchain_side:
     external: true
   blockchain_home:
     external: true
+  binance_net:
+    external: true
diff --git a/src/test-services/binanceSend/.env.development b/src/test-services/binanceSend/.env.development
index 9660ff3..212c788 100644
--- a/src/test-services/binanceSend/.env.development
+++ b/src/test-services/binanceSend/.env.development
@@ -1,4 +1,4 @@
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_ASSET=KFT-94F
 
-#FOREIGN_PRIVATE_KEY is taken from src/test-services/.keys.development
+FOREIGN_PRIVATE_KEY=dd5ec5a7abe9d1fff21170ae591085f000fc6fd9ca0107fe047593f44e328e40

From fb27aa8fbc0972ab60098bf3576864ddbcb20de0 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:40:04 +0300
Subject: [PATCH 077/129] node-info, fees requests, automatic foreign asset id
 replacements

---
 src/binance-testnet/http-api/index.js | 36 +++++++++++++++++++++------
 src/binance-testnet/run.sh            | 13 +++++++++-
 2 files changed, 40 insertions(+), 9 deletions(-)

diff --git a/src/binance-testnet/http-api/index.js b/src/binance-testnet/http-api/index.js
index 49de564..58d52aa 100644
--- a/src/binance-testnet/http-api/index.js
+++ b/src/binance-testnet/http-api/index.js
@@ -22,14 +22,21 @@ const parser = createParser('/http-api/marketdata/marketdata.json', 20 * 1024)
 parser.eventEmitter.on('object', (obj) => {
   obj.Transfers.forEach((event) => {
     // eslint-disable-next-line no-param-reassign
-    event.Timestamp = Math.ceil(obj.Timestamp / 1000)
+    event.Timestamp = Math.ceil(obj.Timestamp / 10 ** 6)
     transfers.push(event)
   })
 })
 
 const app = express()
-app.use(express.json())
-app.use(express.urlencoded({ extended: true }))
+app.use('/api/v1/broadcast', (req, res, next) => {
+  req.rawBody = ''
+  req.on('data', (chunk) => {
+    req.rawBody += chunk.toString()
+  })
+  req.on('end', () => {
+    next()
+  })
+})
 
 function wrap(f) {
   return async (req, res) => {
@@ -97,19 +104,29 @@ async function handleAccount(req, res) {
 
 async function handleAccountSequence(req, res) {
   const response = (await apiClient.get(`/api/v1/account/${req.params.account}`)).data
-  res.send(response.sequence.toString())
+  res.send({ sequence: response.sequence })
+}
+
+async function handleNodeInfo(req, res) {
+  const response = (await rpcClient.get('/status')).data
+  res.send(response.result)
+}
+
+async function handleFees(req, res) {
+  const response = (await apiClient.get('/api/v1/fees')).data
+  res.send(response)
 }
 
 async function handleBroadcast(req, res) {
   if (req.query.sync !== 'true') {
     res.status(400).send('Async broadcast is not supported')
   } else {
-    const response = (await rpcClient.get('/broadcast_tx_sync', {
+    const response = await rpcClient.get('/broadcast_tx_sync', {
       params: {
-        tx: req.body
+        tx: `0x${req.rawBody}`
       }
-    })).data
-    res.send(response.result)
+    })
+    res.send([response.data.result])
   }
 }
 
@@ -118,8 +135,11 @@ app.get('/api/v1/time', wrap(handleTime))
 app.get('/api/v1/transactions', wrap(handleTransactions))
 app.get('/api/v1/account/:account', wrap(handleAccount))
 app.get('/api/v1/account/:account/sequence', wrap(handleAccountSequence))
+app.get('/api/v1/node-info', wrap(handleNodeInfo))
+app.get('/api/v1/fees', wrap(handleFees))
 app.post('/api/v1/broadcast', wrap(handleBroadcast))
 
 app.listen(8000, () => {
+  // eslint-disable-next-line no-console
   console.log('Listening on port 8000')
 })
diff --git a/src/binance-testnet/run.sh b/src/binance-testnet/run.sh
index 7216460..99f9dc8 100755
--- a/src/binance-testnet/run.sh
+++ b/src/binance-testnet/run.sh
@@ -2,6 +2,8 @@
 
 set -e
 
+cd $(dirname "$0")
+
 tbnbcli() {
     echo 12345678 | docker exec -i binance-testnet_node_1 ./tbnbcli $@ --from node0 --node http://node:26657 --chain-id Binance-Dev --json
 }
@@ -26,7 +28,16 @@ ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --tok
 TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
 echo "Issued $TOKEN_SYMBOL"
 
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../test-services/binanceBalance/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../test-services/binanceSend/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator1/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator2/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator3/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../tests/.env
+
 sleep 2
 
 echo "Sending tokens to controlled address"
-tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
\ No newline at end of file
+tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
+
+sleep 2
\ No newline at end of file

From 93292ffe452da3edd39b905d3c41fc261b640640 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:41:17 +0300
Subject: [PATCH 078/129] Automatic fee detection for transfering all funds

---
 src/oracle/tss-sign/signer.js |  9 ++++++++-
 src/oracle/tss-sign/tx.js     | 15 +++++----------
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 1b89ae5..1123998 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -90,6 +90,12 @@ async function getAccount(address) {
   return response.data
 }
 
+async function getFee() {
+  logger.info('Getting fees')
+  const response = await retry(() => httpClient.get('/api/v1/fees'))
+  return response.data.filter((fee) => fee.multi_transfer_fee)[0].multi_transfer_fee * 2
+}
+
 async function waitForAccountNonce(address, nonce) {
   cancelled = false
   logger.info(`Waiting for account ${address} to have nonce ${nonce}`)
@@ -275,6 +281,7 @@ async function main() {
 
       while (to !== '') {
         logger.info(`Building corresponding transaction for transferring all funds, nonce ${nonce}, recipient ${to}`)
+        const fee = await getFee()
         const tx = new Transaction({
           from,
           accountNumber: account.account_number,
@@ -282,7 +289,7 @@ async function main() {
           recipients: [{
             to,
             tokens: account.balances.find((token) => token.symbol === FOREIGN_ASSET).free,
-            bnbs: new BN(account.balances.find((token) => token.symbol === 'BNB').free).minus(new BN(60000).div(10 ** 8))
+            bnbs: new BN(account.balances.find((token) => token.symbol === 'BNB').free).minus(new BN(fee).div(10 ** 8))
           }],
           asset: FOREIGN_ASSET,
           memo: `Attempt ${attempt}`
diff --git a/src/oracle/tss-sign/tx.js b/src/oracle/tss-sign/tx.js
index fa3ec96..ee6cfcc 100644
--- a/src/oracle/tss-sign/tx.js
+++ b/src/oracle/tss-sign/tx.js
@@ -25,15 +25,13 @@ class Transaction {
     if (asset && totalTokens.isGreaterThan(0)) {
       senderCoins.push({
         denom: asset,
-        amount: totalTokens.multipliedBy(10 ** 8)
-          .toNumber()
+        amount: totalTokens.multipliedBy(10 ** 8).toNumber()
       })
     }
     if (totalBnbs.isGreaterThan(0)) {
       senderCoins.push({
         denom: BNB_ASSET,
-        amount: totalBnbs.multipliedBy(10 ** 8)
-          .toNumber()
+        amount: totalBnbs.multipliedBy(10 ** 8).toNumber()
       })
     }
     senderCoins.sort((a, b) => a.denom > b.denom)
@@ -47,15 +45,13 @@ class Transaction {
       if (asset && tokens) {
         receiverCoins.push({
           denom: asset,
-          amount: new BN(tokens).multipliedBy(10 ** 8)
-            .toNumber()
+          amount: new BN(tokens).multipliedBy(10 ** 8).toNumber()
         })
       }
       if (bnbs) {
         receiverCoins.push({
           denom: BNB_ASSET,
-          amount: new BN(bnbs).multipliedBy(10 ** 8)
-            .toNumber()
+          amount: new BN(bnbs).multipliedBy(10 ** 8).toNumber()
         })
       }
       receiverCoins.sort((a, b) => a.denom > b.denom)
@@ -103,8 +99,7 @@ class Transaction {
     if (s.gt(n.div(2))) {
       logger.debug('Normalizing s')
       // eslint-disable-next-line no-param-reassign
-      signature.s = n.minus(s)
-        .toString(16)
+      signature.s = n.minus(s).toString(16)
     }
     const publicKeyEncoded = Buffer.from(`eb5ae98721${yLast % 2 ? '03' : '02'}${padZeros(publicKey.x, 64)}`, 'hex')
     this.tx.signatures = [{

From 17690e7ac2c1ffa41b46dd10980cc1547a19fd01 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:42:09 +0300
Subject: [PATCH 079/129] Updated env files to use local binance network

---
 demo/validator1/.env.development                  | 6 +++---
 demo/validator2/.env.development                  | 6 +++---
 demo/validator3/.env.development                  | 6 +++---
 src/test-services/binanceBalance/.env.development | 4 ++--
 src/test-services/binanceBalance/run.sh           | 2 +-
 src/test-services/binanceSend/.env.development    | 4 ++--
 src/test-services/binanceSend/run.sh              | 2 +-
 7 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 2987613..832f088 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -9,10 +9,10 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 #FOREIGN_URL=https://testnet-dex.binance.org/
 #FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=KFT-94F
-FOREIGN_URL=http://node:8000
+#FOREIGN_ASSET=DEV-BA8
+FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-996
+FOREIGN_ASSET=DEV-BA8
 
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index d250505..56cd098 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -9,10 +9,10 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 #FOREIGN_URL=https://testnet-dex.binance.org/
 #FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=KFT-94F
-FOREIGN_URL=http://node:8000
+#FOREIGN_ASSET=DEV-BA8
+FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-996
+FOREIGN_ASSET=DEV-BA8
 
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index 6ee1766..bb3def1 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -9,10 +9,10 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 #FOREIGN_URL=https://testnet-dex.binance.org/
 #FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=KFT-94F
-FOREIGN_URL=http://node:8000
+#FOREIGN_ASSET=DEV-BA8
+FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-996
+FOREIGN_ASSET=DEV-BA8
 
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
diff --git a/src/test-services/binanceBalance/.env.development b/src/test-services/binanceBalance/.env.development
index 4f96a09..9169981 100644
--- a/src/test-services/binanceBalance/.env.development
+++ b/src/test-services/binanceBalance/.env.development
@@ -1,2 +1,2 @@
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://http-api:8000
+FOREIGN_ASSET=DEV-BA8
diff --git a/src/test-services/binanceBalance/run.sh b/src/test-services/binanceBalance/run.sh
index ec82b26..72c66f2 100755
--- a/src/test-services/binanceBalance/run.sh
+++ b/src/test-services/binanceBalance/run.sh
@@ -9,4 +9,4 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t binance-balance . > /dev/null
 
-docker run --rm --env-file ".env.$TARGET_NETWORK" binance-balance $@
+docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" binance-balance $@
diff --git a/src/test-services/binanceSend/.env.development b/src/test-services/binanceSend/.env.development
index 212c788..db94446 100644
--- a/src/test-services/binanceSend/.env.development
+++ b/src/test-services/binanceSend/.env.development
@@ -1,4 +1,4 @@
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://http-api:8000
+FOREIGN_ASSET=DEV-BA8
 
 FOREIGN_PRIVATE_KEY=dd5ec5a7abe9d1fff21170ae591085f000fc6fd9ca0107fe047593f44e328e40
diff --git a/src/test-services/binanceSend/run.sh b/src/test-services/binanceSend/run.sh
index e96570c..dbed1fa 100755
--- a/src/test-services/binanceSend/run.sh
+++ b/src/test-services/binanceSend/run.sh
@@ -9,4 +9,4 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t binance-send . > /dev/null
 
-docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" binance-send $@
+docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" binance-send $@

From 1b91c790f14e23802a13830c123caee51bbd9589 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:43:28 +0300
Subject: [PATCH 080/129] Updated tests env file and scripts.

---
 tests/.env               |  7 +++---
 tests/init.sh            |  1 +
 tests/run.sh             |  2 +-
 tests/test/index.js      |  4 ++--
 tests/test/utils/user.js | 52 +++++++++++++++++++++-------------------
 5 files changed, 36 insertions(+), 30 deletions(-)

diff --git a/tests/.env b/tests/.env
index e54b083..f4cca67 100644
--- a/tests/.env
+++ b/tests/.env
@@ -5,6 +5,7 @@ HOME_PRIVATE_KEY=e2aeb24eaa63102d0c0821717c3b6384abdabd7af2ad4ec8e650dce300798b2
 
 SIDE_RPC_URL=http://ganache_side:8545
 
-FOREIGN_URL=https://testnet-dex.binance.org/
-FOREIGN_CHAIN_ID=Binance-Chain-Nile
-FOREIGN_ASSET=KFT-94F
+FOREIGN_URL=http://http-api:8000
+FOREIGN_CHAIN_ID=Binance-Dev
+FOREIGN_ASSET=DEV-BA8
+FOREIGN_PRIVATE_KEY=dd5ec5a7abe9d1fff21170ae591085f000fc6fd9ca0107fe047593f44e328e40
diff --git a/tests/init.sh b/tests/init.sh
index d459a22..794fd8c 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -6,6 +6,7 @@ set -v
 docker build -t tss ./src/tss
 
 ./demo/start-environment.sh
+./src/binance-testnet/run.sh
 
 cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
 cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
diff --git a/tests/run.sh b/tests/run.sh
index a81a6e6..3eb29d7 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -7,9 +7,9 @@ docker build -t tests ./tests
 docker rm tests > /dev/null 2>&1 || true
 docker create --name tests \
     --env-file ./tests/.env \
-    -e FOREIGN_PRIVATE_KEY \
     tests $@
 
+docker network connect binance_net tests
 docker network connect blockchain_home tests
 docker network connect blockchain_side tests
 docker network connect validator1_test_network tests
diff --git a/tests/test/index.js b/tests/test/index.js
index 7f440c4..7b7da2e 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -32,8 +32,8 @@ describe('bridge tests', function () {
     let bncPrefundedUser
 
     before(async function () {
-      ethPrefundedUser = await createUser(HOME_PRIVATE_KEY)
-      bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY)
+      ethPrefundedUser = await createUser(HOME_PRIVATE_KEY, 'eth')
+      bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY, 'bnc')
 
       const bnbBalance = await bncPrefundedUser.getBnbBalance()
       assert.ok(bnbBalance >= 1, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 1 BNB, got ${bnbBalance}`)
diff --git a/tests/test/utils/user.js b/tests/test/utils/user.js
index 72b6954..a0c035c 100644
--- a/tests/test/utils/user.js
+++ b/tests/test/utils/user.js
@@ -13,34 +13,38 @@ const txOptions = {
 
 const { SIDE_RPC_URL } = process.env
 
-async function createUser(privateKey) {
-  const providerSide = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
-  const walletSide = new ethers.Wallet(privateKey, providerSide)
-  const wallet = new ethers.Wallet(privateKey, provider)
-  const ethAddress = wallet.address
-  const bncAddress = getAddressFromPrivateKey(privateKey)
-  const token = tokenContract.connect(wallet)
-  const bridge = bridgeContract.connect(wallet)
-
-  const bncClient = await createBncClient(privateKey)
+async function createUser(privateKey, network) {
+  const opts = {}
+  if (network !== 'bnc') {
+    opts.providerSide = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+    opts.walletSide = new ethers.Wallet(privateKey, opts.providerSide)
+    opts.wallet = new ethers.Wallet(privateKey, provider)
+    opts.ethAddress = opts.wallet.address
+    opts.token = tokenContract.connect(opts.wallet)
+    opts.bridge = bridgeContract.connect(opts.wallet)
+  }
+  if (network !== 'eth') {
+    opts.bncAddress = getAddressFromPrivateKey(privateKey)
+    opts.bncClient = await createBncClient(privateKey)
+  }
 
   return {
-    ethAddress,
-    bncAddress,
+    ethAddress: opts.ethAddress,
+    bncAddress: opts.bncAddress,
     async getEthBalance() {
-      const balance = await wallet.getBalance()
+      const balance = await opts.wallet.getBalance()
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
     },
     async getSideEthBalance() {
-      const balance = await walletSide.getBalance()
+      const balance = await opts.walletSide.getBalance()
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
     },
     async getErcBalance() {
-      const balance = await token.balanceOf(ethAddress)
+      const balance = await opts.token.balanceOf(opts.ethAddress)
       return parseFloat(new BN(balance).dividedBy(10 ** 18).toFixed(8, 3))
     },
     async transferEth(to, value) {
-      const tx = await wallet.sendTransaction(
+      const tx = await opts.wallet.sendTransaction(
         {
           to,
           value: `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`
@@ -50,7 +54,7 @@ async function createUser(privateKey) {
       await tx.wait()
     },
     async transferEthSide(to, value) {
-      const tx = await walletSide.sendTransaction(
+      const tx = await opts.walletSide.sendTransaction(
         {
           to,
           value: `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`
@@ -60,7 +64,7 @@ async function createUser(privateKey) {
       await tx.wait()
     },
     async transferErc(to, value) {
-      const tx = await token.transfer(
+      const tx = await opts.token.transfer(
         to,
         `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
         txOptions
@@ -68,7 +72,7 @@ async function createUser(privateKey) {
       await tx.wait()
     },
     async approveErc(to, value) {
-      const tx = await token.approve(
+      const tx = await opts.token.approve(
         to,
         `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
         txOptions
@@ -76,27 +80,27 @@ async function createUser(privateKey) {
       await tx.wait()
     },
     async exchangeErc(value) {
-      const tx = await bridge.exchange(
+      const tx = await opts.bridge.exchange(
         `0x${new BN(value).multipliedBy(10 ** 18).toString(16)}`,
         txOptions
       )
       await tx.wait()
     },
     async getBnbBalance() {
-      const balance = await getBnbBalance(bncAddress)
+      const balance = await getBnbBalance(opts.bncAddress)
       await delay(1000)
       return balance
     },
     async getBepBalance() {
-      const balance = await getBepBalance(bncAddress)
+      const balance = await getBepBalance(opts.bncAddress)
       await delay(1000)
       return balance
     },
     async transferBepBnb(to, tokens, bnbs) {
-      return await bncClient.transfer(to, tokens, bnbs)
+      return await opts.bncClient.transfer(to, tokens, bnbs)
     },
     async exchangeBep(bridgeAddress, value) {
-      return await bncClient.exchange(bridgeAddress, value)
+      return await opts.bncClient.exchange(bridgeAddress, value)
     }
   }
 }

From 610e4e774285a5648f58dd1a96aeabbe89fb2b8c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:43:56 +0300
Subject: [PATCH 081/129] Fixed name overlapping for proxy container in
 docker-compose networks

---
 src/oracle/docker-compose-test.yml | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index c626a47..939f22f 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -20,10 +20,12 @@ services:
     ports:
       - '${VOTES_PROXY_PORT}:8002'
     networks:
-      - test_network
-      - blockchain_home
-      - blockchain_side
-      - binance_net
+      test_network:
+        aliases:
+          - local_proxy
+      blockchain_home:
+      blockchain_side:
+      binance_net:
   keygen:
     image: keygen-client
     build:
@@ -31,7 +33,7 @@ services:
       context: .
     environment:
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
-      - 'PROXY_URL=http://proxy:8001'
+      - 'PROXY_URL=http://local_proxy:8001'
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
@@ -44,7 +46,7 @@ services:
       context: .
     environment:
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
-      - 'PROXY_URL=http://proxy:8001'
+      - 'PROXY_URL=http://local_proxy:8001'
       - FOREIGN_CHAIN_ID
       - FOREIGN_URL
       - FOREIGN_ASSET
@@ -104,7 +106,7 @@ services:
       - FOREIGN_URL
       - FOREIGN_ASSET
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
-      - 'PROXY_URL=http://proxy:8001'
+      - 'PROXY_URL=http://local_proxy:8001'
       - FOREIGN_FETCH_MAX_TIME_INTERVAL
       - FOREIGN_FETCH_INTERVAL
       - FOREIGN_FETCH_BLOCK_TIME_OFFSET

From 9a7c2432955709c9dade9d0b56c602af855dad47 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 19:51:05 +0300
Subject: [PATCH 082/129] Updated run.sh scripts for test services

---
 .gitignore                                  | 1 -
 src/test-services/.keys.development.example | 1 -
 src/test-services/binanceBalance/run.sh     | 6 +++++-
 src/test-services/binanceSend/run.sh        | 6 +++++-
 src/test-services/ethereumBalance/run.sh    | 6 +++++-
 src/test-services/ethereumSend/run.sh       | 6 +++++-
 src/test-services/sidePrefund/run.sh        | 6 +++++-
 7 files changed, 25 insertions(+), 7 deletions(-)
 delete mode 100644 src/test-services/.keys.development.example

diff --git a/.gitignore b/.gitignore
index 6806d9b..f9ab79b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,7 +8,6 @@ demo/validator*/.keys.staging
 src/deploy/deploy*/build/
 src/deploy/.keys.staging
 src/test-services/.keys.staging
-src/test-services/.keys.development
 src/test.js
 tests/results.xml
 package-lock.json
diff --git a/src/test-services/.keys.development.example b/src/test-services/.keys.development.example
deleted file mode 100644
index 6224ee0..0000000
--- a/src/test-services/.keys.development.example
+++ /dev/null
@@ -1 +0,0 @@
-FOREIGN_PRIVATE_KEY=0000000000000000000000000000000000000000000000000000000000000000
diff --git a/src/test-services/binanceBalance/run.sh b/src/test-services/binanceBalance/run.sh
index 72c66f2..35375b0 100755
--- a/src/test-services/binanceBalance/run.sh
+++ b/src/test-services/binanceBalance/run.sh
@@ -9,4 +9,8 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t binance-balance . > /dev/null
 
-docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" binance-balance $@
+if [[ "$TARGET_NETWORK" == "development" ]]; then
+    docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" binance-balance $@
+else
+    docker run --rm --env-file ".env.$TARGET_NETWORK" binance-balance $@
+fi
\ No newline at end of file
diff --git a/src/test-services/binanceSend/run.sh b/src/test-services/binanceSend/run.sh
index dbed1fa..908a2b4 100755
--- a/src/test-services/binanceSend/run.sh
+++ b/src/test-services/binanceSend/run.sh
@@ -9,4 +9,8 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t binance-send . > /dev/null
 
-docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" binance-send $@
+if [[ "$TARGET_NETWORK" == "development" ]]; then
+    docker run --rm --network binance_net --env-file ".env.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" binance-send $@
+else
+    docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" binance-send $@
+fi
diff --git a/src/test-services/ethereumBalance/run.sh b/src/test-services/ethereumBalance/run.sh
index 369a2b5..9dbef3f 100755
--- a/src/test-services/ethereumBalance/run.sh
+++ b/src/test-services/ethereumBalance/run.sh
@@ -9,4 +9,8 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t ethereum-balance . > /dev/null
 
-docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
+if [[ "$TARGET_NETWORK" == "development" ]]; then
+    docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
+else
+    docker run --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
+fi
diff --git a/src/test-services/ethereumSend/run.sh b/src/test-services/ethereumSend/run.sh
index 30d683e..3808257 100755
--- a/src/test-services/ethereumSend/run.sh
+++ b/src/test-services/ethereumSend/run.sh
@@ -9,4 +9,8 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 docker build -t ethereum-send . > /dev/null
 
-docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
+if [[ "$TARGET_NETWORK" == "development" ]]; then
+    docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
+else
+    docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
+fi
diff --git a/src/test-services/sidePrefund/run.sh b/src/test-services/sidePrefund/run.sh
index 88df060..3955564 100755
--- a/src/test-services/sidePrefund/run.sh
+++ b/src/test-services/sidePrefund/run.sh
@@ -11,4 +11,8 @@ echo "Using $TARGET_NETWORK network"
 
 docker build -t side-prefund . > /dev/null
 
-docker run --network blockchain_side --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" side-prefund $@
+if [[ "$TARGET_NETWORK" == "development" ]]; then
+    docker run --network blockchain_side --rm --env-file ".env.$TARGET_NETWORK" side-prefund $@
+else
+    docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" side-prefund $@
+fi

From 593bab3121cd903e9d3099ec66fa28f1e2406663 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 20:14:07 +0300
Subject: [PATCH 083/129] Updated and refactored tests and demo scripts

---
 .circleci/config.yml                             | 11 +++++------
 .../run.sh => demo/start-binance-environment.sh  | 12 ++++++------
 ...ironment.sh => start-ethereum-environment.sh} |  0
 demo/validator1/.env.development                 |  4 ----
 demo/validator2/.env.development                 |  4 ----
 demo/validator3/.env.development                 |  4 ----
 tests/init.sh                                    | 16 +++++++++++++---
 tests/run.sh                                     | 10 ++++++----
 8 files changed, 30 insertions(+), 31 deletions(-)
 rename src/binance-testnet/run.sh => demo/start-binance-environment.sh (76%)
 rename demo/{start-environment.sh => start-ethereum-environment.sh} (100%)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index b20acda..06659cb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -150,7 +150,7 @@ jobs:
       - run:
           name: "Run dev environment, deploy contracts, prefund accounts"
           command: |
-            BLOCK_TIME=3 ./demo/start-environment.sh
+            BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
             cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
       - run:
           name: "Stop dev environment"
@@ -158,9 +158,7 @@ jobs:
       - bridge/save_ganache_data
       - run:
           name: "Prefund bnc addresses"
-          command: |
-            echo "FOREIGN_PRIVATE_KEY=$FOREIGN_PRIVATE_KEY" > ./src/test-services/.keys.$TARGET_NETWORK
-            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
+          command: cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
   run_tests:
     executor: bridge/node-dev
     steps:
@@ -173,7 +171,8 @@ jobs:
       - run:
           name: "Init tests environment"
           command: |
-            BLOCK_TIME=3 ./demo/start-environment.sh
+            BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
+            ./demo/start-binance-environment.sh
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
@@ -189,7 +188,7 @@ jobs:
           name: "Build and prepare tests container"
           command: |
             docker build -t tests ./tests
-            docker create --env-file ./tests/.env -e FOREIGN_PRIVATE_KEY --name tests tests
+            docker create --env-file ./tests/.env --name tests tests
             docker network connect blockchain_side tests
             docker network connect blockchain_home tests
             docker network connect validator1_test_network tests
diff --git a/src/binance-testnet/run.sh b/demo/start-binance-environment.sh
similarity index 76%
rename from src/binance-testnet/run.sh
rename to demo/start-binance-environment.sh
index 99f9dc8..2111c20 100755
--- a/src/binance-testnet/run.sh
+++ b/demo/start-binance-environment.sh
@@ -28,12 +28,12 @@ ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --tok
 TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
 echo "Issued $TOKEN_SYMBOL"
 
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../test-services/binanceBalance/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../test-services/binanceSend/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator1/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator2/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../demo/validator3/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../../tests/.env
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceBalance/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceSend/.env.development
+sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../tests/.env
+for file in ./validator*/.env.development; do
+    sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' "$file"
+done
 
 sleep 2
 
diff --git a/demo/start-environment.sh b/demo/start-ethereum-environment.sh
similarity index 100%
rename from demo/start-environment.sh
rename to demo/start-ethereum-environment.sh
diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 832f088..54e7248 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -7,13 +7,9 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-#FOREIGN_URL=https://testnet-dex.binance.org/
-#FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=DEV-BA8
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
 FOREIGN_ASSET=DEV-BA8
-
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 56cd098..532206d 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -7,13 +7,9 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-#FOREIGN_URL=https://testnet-dex.binance.org/
-#FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=DEV-BA8
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
 FOREIGN_ASSET=DEV-BA8
-
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index bb3def1..cdf7303 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -7,13 +7,9 @@ HOME_MAX_FETCH_RANGE_SIZE=10
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
-#FOREIGN_URL=https://testnet-dex.binance.org/
-#FOREIGN_CHAIN_ID=Binance-Chain-Nile
-#FOREIGN_ASSET=DEV-BA8
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
 FOREIGN_ASSET=DEV-BA8
-
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
diff --git a/tests/init.sh b/tests/init.sh
index 794fd8c..036b15c 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,20 +1,30 @@
 #!/bin/bash
 
 set -e
-set -v
 
+echo "Killing all remaining validator docker containers"
+docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1
+docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1
+
+echo "Building tss clients"
 docker build -t tss ./src/tss
 
-./demo/start-environment.sh
-./src/binance-testnet/run.sh
+echo "Starting ethereum test networks"
+BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
+echo "Starting binance test network"
+./demo/start-binance-environment.sh
 
+echo "Prefunding ethereum user accounts"
 cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
+echo "Prefunding binance user accounts"
 cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
 
+echo "Starting validator daemons"
 N=1 ./demo/validator-demo.sh -d
 N=2 ./demo/validator-demo.sh -d
 N=3 ./demo/validator-demo.sh -d
 
+echo "Waiting until validators are ready"
 until curl -X GET http://localhost:5001 > /dev/null 2>&1; do sleep 1; done
 until curl -X GET http://localhost:5002 > /dev/null 2>&1; do sleep 1; done
 until curl -X GET http://localhost:5003 > /dev/null 2>&1; do sleep 1; done
diff --git a/tests/run.sh b/tests/run.sh
index 3eb29d7..7889847 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -2,13 +2,14 @@
 
 set -e
 
+echo "Building tests main image"
 docker build -t tests ./tests
 
+echo "Creating tests container"
 docker rm tests > /dev/null 2>&1 || true
-docker create --name tests \
-    --env-file ./tests/.env \
-    tests $@
+docker create --name tests --env-file ./tests/.env tests $@
 
+echo "Connecting tests container to test networks"
 docker network connect binance_net tests
 docker network connect blockchain_home tests
 docker network connect blockchain_side tests
@@ -16,7 +17,8 @@ docker network connect validator1_test_network tests
 docker network connect validator2_test_network tests
 docker network connect validator3_test_network tests
 
+echo "Starting tests"
 docker start -a tests || true
 
+echo "Saving test results"
 docker cp "tests:/tests/results.xml" "./tests/results.xml" > /dev/null 2>&1 || true
-docker rm tests > /dev/null 2>&1  || true

From 653ab844a75def7ff9226ea8eb99cac24d2979c5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 20:17:34 +0300
Subject: [PATCH 084/129] Automatic cleaning in tests init script

---
 tests/init.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/init.sh b/tests/init.sh
index 036b15c..e5a3297 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,6 +2,9 @@
 
 set -e
 
+echo "Cleaning previous demo environment"
+./demo/clean.sh
+
 echo "Killing all remaining validator docker containers"
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1
 docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1

From 57cec2835703158a6d3ed0cdf1257e5e92fff717 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 20:25:08 +0300
Subject: [PATCH 085/129] Not failing docker kill/rm

---
 tests/init.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/init.sh b/tests/init.sh
index e5a3297..cb4f279 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -6,8 +6,8 @@ echo "Cleaning previous demo environment"
 ./demo/clean.sh
 
 echo "Killing all remaining validator docker containers"
-docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1
-docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1
+docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
 
 echo "Building tss clients"
 docker build -t tss ./src/tss

From 3614f8c2927448bd2a9f02409178a7e55eed81b5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 20:54:35 +0300
Subject: [PATCH 086/129] Fixed tests and demo scripts

---
 demo/start-binance-environment.sh |  4 ++--
 tests/init.sh                     | 12 ++++++++----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/demo/start-binance-environment.sh b/demo/start-binance-environment.sh
index 2111c20..86ca927 100755
--- a/demo/start-binance-environment.sh
+++ b/demo/start-binance-environment.sh
@@ -16,10 +16,10 @@ docker volume rm binance-testnet_marketdata > /dev/null 2>&1 || true
 docker network create binance_net > /dev/null 2>&1 || true
 
 echo "Building required binaries"
-docker build -t testnet-binaries . > /dev/null 2>&1 || true
+docker build -t testnet-binaries ../src/binance-testnet > /dev/null 2>&1 || true
 
 echo "Running environment"
-docker-compose up --build -d
+docker-compose -f ../src/binance-testnet/docker-compose.yml up --build -d
 
 sleep 2
 
diff --git a/tests/init.sh b/tests/init.sh
index cb4f279..b94a291 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,12 +2,16 @@
 
 set -e
 
-echo "Cleaning previous demo environment"
-./demo/clean.sh
-
-echo "Killing all remaining validator docker containers"
+echo "Killing all remaining docker containers"
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
 docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker kill ganache_home ganache_side > /dev/null 2>&1 || true
+docker rm ganache_home ganache_side > /dev/null 2>&1 || true
+docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+
+echo "Cleaning previous demo environment"
+./demo/clean.sh
 
 echo "Building tss clients"
 docker build -t tss ./src/tss

From 50c8d4ecf3abde9d0c5aeb3ff674d6835f984349 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 21:11:25 +0300
Subject: [PATCH 087/129] Moved bnc prefunding in run_tests

---
 .circleci/config.yml | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 06659cb..a64dad6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -156,9 +156,6 @@ jobs:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
       - bridge/save_ganache_data
-      - run:
-          name: "Prefund bnc addresses"
-          command: cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
   run_tests:
     executor: bridge/node-dev
     steps:
@@ -173,6 +170,7 @@ jobs:
           command: |
             BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
             ./demo/start-binance-environment.sh
+            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d

From 7ae65fd42f6aca0171fbd51a0e0d9fcefdb1ae44 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 11 Nov 2019 21:33:55 +0300
Subject: [PATCH 088/129] Connecting to binance test network

---
 .circleci/config.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index a64dad6..a1e6183 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -187,6 +187,7 @@ jobs:
           command: |
             docker build -t tests ./tests
             docker create --env-file ./tests/.env --name tests tests
+            docker network connect binance_net tests
             docker network connect blockchain_side tests
             docker network connect blockchain_home tests
             docker network connect validator1_test_network tests

From 5240ae17aba70cfbad3f03c46a51ecf3195e1c07 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 12 Nov 2019 17:35:12 +0300
Subject: [PATCH 089/129] Updated demo instructions

---
 DEMO.md | 317 +++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 196 insertions(+), 121 deletions(-)

diff --git a/DEMO.md b/DEMO.md
index a408598..9dde9b6 100644
--- a/DEMO.md
+++ b/DEMO.md
@@ -13,7 +13,13 @@ This demo supports two ways of dealing with the Ethereum side of a bridge:
 As part of this demo two EVM-based chains ([ganache](https://github.com/trufflesuite/ganache-cli)) will be started:
   - **Home chain** - it keeps an ERC20 contract (`0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc`) and the bridge contract (`0x44c158FE850821ae69DaF37AADF5c539e9d0025B`).
   - **Side chain** - the MPC orchestration contract (`0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc`) is located here
-Both chains are run in separate docker containers.
+Both chains are run in separate docker containers. 
+JSON-RPC ports are mapped to the host (7545 - side chain, 8545 - home chain)
+
+Local Binance network within separate docker container will be used.
+In addition, some part of Binance accelerated node [HTTP API](https://docs.binance.org/api-reference/dex-api/paths.html) 
+will be emulated, since a regular full-node API does not provide all required features.
+APIs and NODE RPC ports are mapped to the host (26657 - RPC, 8080 - api-server, 8000 - emulated accelerated node api)
 
 #### Staging mode
 
@@ -22,6 +28,9 @@ As part of this demo two EVM-based public chains will be used:
   - **Side chain** - Sokol POA testnet keeps the MPC orchestration contract.
 Interaction with chains is done by using public available RPC urls.
 
+Public Binance testnet will be used for demo purposes. 
+Interaction with chain is done by using a public available HTTP API endpoint.
+
 ### Demo validators
 
 Three validators will be run and only two validators are required to confirm the transfer. Every validator node is a set of docker containers (`eth-watcher`, `bnc-watcher`, `signer`, `proxy`, `redis`, `rabbitmq`).
@@ -30,161 +39,92 @@ Three validators will be run and only two validators are required to confirm the
 
 The public Binance Chain testnet will keep a BEP2 token.
 
-### Running demo
+### Running demo in development mode
 
 1. Preparation
-    * (1.1) Download `tbnbcli` from https://github.com/binance-chain/node-binary/tree/master/cli.
-    * (1.2) Create a new account through the [web-interface](https://testnet.binance.org/en/create) in the Binance testnet wallet. Copy the private key and mnemonic phrase. The private key will be used to import it in an Ethereum Wallet. The mnemonic phrase is to recover the BNB with `tbnbcli`.
-    * (1.3) Recover the account in the console with the mnemonic.
-      ```
-      ./tbnbcli keys add test_account1 --recover
-      ```
-    * (1.4) Create few BNB accounts from the console. They will be donors to provide enough funds to issue a BEP2 tokens (500 BNB required).
-      ```
-      ./tbnbcli keys add test_account2
-      ./tbnbcli keys add test_account3
-      ```
-    * (1.5) Register on the Binance site and fund the accounts from the [testnet faucet](https://www.binance.com/en/dex/testnet/address).
-    * (1.6) Re-arrange funds on the accounts as so the first account will have 550 BNB and others 10-20 BNBs to make transactions.
-      ```
-      ./tbnbcli send --from test_account2 --to <address of the first account> \ 
-        --amount 18500000000:BNB --chain-id=Binance-Chain-Nile \
-        --node=data-seed-pre-2-s1.binance.org:80 --memo "donate"
-      ./tbnbcli send --from test_account3 --to <address of the first account> \
-        --amount 18500000000:BNB --chain-id=Binance-Chain-Nile 
-        --node=data-seed-pre-2-s1.binance.org:80 --memo "donate"
-      ```
-    * (1.7) Issue the BEP2 token from the first account. `3141500000000000` corresponds to `31415000.0` tokens.
-      ```
-      ./tbnbcli token issue --token-name "ERC20toBEP2Bridge" --total-supply 3141500000000000 \
-        --symbol ETB0819 --mintable --from test_account1 --chain-id=Binance-Chain-Nile \
-        --node=data-seed-pre-2-s1.binance.org:80 --trust-node
-      ```
-      In the real deployment most probably the token must not be mintable.
-    * (1.8) Get the BEP2 token ID in `denom` field (in this example it is `ETB0819-863`).
-      ```
-      ./tbnbcli account <address of the first account> \
-        --chain-id=Binance-Chain-Nile --node=data-seed-pre-2-s1.binance.org:80 --trust-node
-      ```
-    * (1.9) Clone the repo and initialize git submodules:
+    * (1.1) Clone the repo and initialize git submodules:
       ```
       git clone --recurse-submodules https://github.com/k1rill-fedoseev/eth-to-bnc-bridge.git
       ```
-    * (1.10) Build TSS to be used in the bridge oracles:
+    * (1.2) Build TSS to be used in the bridge oracles:
       ```
       docker build -t tss ./src/tss
       ```
+    * (1.3) Generate several private keys for bridge testing. (e. g. `openssl rand -hex 32`)
+    * (1.4) Get Ethereum and Binance addresses for recently created accounts via running 
+      ```
+      ./src/test-services/getAddresses/run.sh <PRIVATE_KEY>
+      ```
 2. Run test environment
-    * 2.1 Running in development mode (using local ganache networks):
-        * (2.1.1) Modify `src/deploy/deploy-test/.env.development` and specify the amount of tokens to mint in the parameter `TOKEN_INITIAL_MINT`.
-        * (2.1.2) Run testnets and deploy contracts
-          ```
-          TARGET_NETWORK=development ./demo/start-environment.sh
-          ```
-          This command will also mint tokens, the owner of tokens is the address that corresponds to the 
-          private key specified in `HOME_PRIVATE_KEY` of `src/deploy/deploy-test/.env.development` (`0xA374DC09057D6B3253d04fACb15736B43fBc7943`).
-     * 2.2 Running in staging mode (using public test networks):
-        * (2.2.1) Prepare three private keys for validators. Get the Ethereum account addresses for these keys.
-        * (2.2.2) Modify `src/deploy/deploy-home/.env.staging` and specify the token contract address in 
-        the Kovan network via `HOME_TOKEN_ADDRESS` (use empty address `0x` if you want to create new 
-        ERC20 contract while deployment). \
-        Set `VALIDATOR_ADDRESS_*` to Ethereum addresses obtained in the previous step. 
-        * (2.2.3) Modify `src/deploy/.keys.staging` and specify private keys for prefunded accounts in both networks.
-        These accounts are used for contract deployment. Use `src/deploy/.keys.staging.example` as an example.
-        * (2.2.4) Deploy contracts
-          ```
-          TARGET_NETWORK=staging ./demo/start-environment.sh
-          ```
-          This command will deploy ERC20 contract and also mint tokens if you left `HOME_TOKEN_ADDRESS` empty,
-          the owner of tokens is the address that corresponds to the private key specified in 
-          `HOME_PRIVATE_KEY` of `src/deploy/.keys.staging`.\
-          Deployed contract address will be automatically updates in all required validators 
-          and test services configs.
-        * (2.2.5) Prefund validator accounts in home network (Kovan):
-          ```
-          TARGET_NETWORK=staging ./src/test-services/ethereumSend/run.sh <Nth validator address> 0 0.5
-          ```
-        * (2.2.6) Prefund validator accounts in side network (Sokol):
-          ```
-          TARGET_NETWORK=staging ./src/test-services/sidePrefund/run.sh <Nth validator address> 1
-          ```
-    * (2.3) Get the Ethereum account address for the first test account from its private key (step 1.2). [NiftyWallet](https://forum.poa.network/c/nifty-wallet) could be used for this.
-    * (2.4) Send few tokens and coins from the current token owner to the first account. Coins are needed to pay transaction fees.
+    * (2.1) Modify `src/deploy/deploy-test/.env.development` and specify the amount of tokens to mint in the parameter `TOKEN_INITIAL_MINT`.
+    * (2.2) Run Ethereum testnets and deploy contracts
       ```
-      TARGET_NETWORK=<target network> ./src/test-services/ethereumSend/run.sh <first account Ethereum address> 5000000000000000000 0.5
+      TARGET_NETWORK=development ./demo/start-ethereum-environment.sh
       ```
-    * (2.5) Check that the tokens were transferred properly:
+      This command will also mint tokens, the owner of tokens is the address that corresponds to the 
+      private key specified in `HOME_PRIVATE_KEY` of `src/deploy/deploy-test/.env.development` (`0xA374DC09057D6B3253d04fACb15736B43fBc7943`).
+    * (2.4) Run Binance testnet and api services
       ```
-      TARGET_NETWORK=<target network> ./src/test-services/ethereumBalance/run.sh <first account Ethereum address>
+      ./demo/start-binance-environment.sh
+      ```
+      This command will also issue a BEP2 token, the owner of tokens is the address that corresponds to the 
+      private key specified in `FOREIGN_PRIVATE_KEY` of `src/test-services/binanceSend/.env.development` (`tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x`).
+      The balance of `tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x` will contain 10000 BNB and 10000 Test Tokens.
+    * (2.5) Send few tokens and coins from the current token owner to the first account. Coins are needed to pay transaction fees.
+      ```
+      ./src/test-services/ethereumSend/run.sh <first account Ethereum address> 5 0.5
+      ```
+    * (2.6) Check that the tokens were transferred properly:
+      ```
+      ./src/test-services/ethereumBalance/run.sh <first account Ethereum address>
       ``` 
 3. Run validators nodes:
-    * (3.1) Modify the parameter `FOREIGN_ASSET` in `demo/validator1/.env.<network>`, `demo/validator2/.env.<network>` 
-    and `demo/validator3/.env.<network>` to specify the identificator of the token (step 1.8) that the oracle will watch. \
-    For staging environment additionally specify `VALIDATOR_PRIVATE_KEY` in the `demo/validator<N>/.keys.staging` (step 2.2.1)
-    * (3.2) Run three validators in separate terminal sessions.
+    * (3.1) Run three validators in separate terminal sessions.
       ```
-      N=1 TARGET_NETWORK=<network> ./demo/validator-demo.sh
-      N=2 TARGET_NETWORK=<network> ./demo/validator-demo.sh
-      N=3 TARGET_NETWORK=<network> ./demo/validator-demo.sh
+      N=1 ./demo/validator-demo.sh
+      N=2 ./demo/validator-demo.sh
+      N=3 ./demo/validator-demo.sh
       ```
       Wait for when the line like the following appears:
       ```
       keygen_1 | Generated multisig account in binance chain: tbnb1mutgnx9n9devmrjh3d0wz332fl8ymgel6tydx6
       ```
-      The line contains the address of the bridge address in the Bincance Chain.
+      The line contains the address of the bridge address in the Binance Chain.
 4. Initialize the state of the bridge account in the Binance Chain
     * (4.1) Fill the balance Fund with BNB coins as so the account will be able to make transactions:
       ```
-      ./tbnbcli send --from test_account1 --to <address of the bridge account> \ 
-        --amount 1000000000:BNB --chain-id=Binance-Chain-Nile \
-        --node=data-seed-pre-2-s1.binance.org:80 --memo "initialization"
-      ```    
-    * (4.2) Fund the account with bridgeable tokens. **This transaction should have 'funding' in the memo**:
+      ./src/test-services/binanceSend/run.sh  <address of the bridge account> 100 1
       ```
-      ./tbnbcli send --from test_account1 --to <address of the bridge account> \ 
-        --amount 3141500000000000:ETB0819-863 --chain-id=Binance-Chain-Nile \
-        --node=data-seed-pre-2-s1.binance.org:80 --memo "funding"
-      ```
-      The oracles should catch this transaction but will ignore it:
-      ```
-      bnc-watcher_1  | Fetching new transactions
-      bnc-watcher_1  | Sending api transactions request
-      bnc-watcher_1  | Found 1 new transactions
-      ```
-      To check the balance of the bridge account the [Binance Testnet Explorer](https://testnet-explorer.binance.org) could be used. It should report about two assets owned by the account.
+      To check the balance of the bridge account use `./src/test-services/binanceBalance/run.sh <address of the bridge account>`
 5. Transfer tokens from Ethereum-based chain to the Binance Chain:
-    * (5.1) Modify  the parameter `HOME_PRIVATE_KEY`
-    (in `src/test-services/ethereumSend/.env.development` or `src/test-services/.keys.staging`)
-    as so it contains the private key of the first test account (step 1.2)
-    * (5.2) Send some amount of tokens to the bridge contract:
+    * (5.1) Send some amount of tokens to the bridge contract, for `PRIVATE_KEY` use some of the keys from step (1.3):
       ```
-      TARGET_NETWORK=<network> ./src/test-services/ethereumSend/run.sh bridge 5000000000000000000
+      PRIVATE_KEY=<test account private key> ./src/test-services/ethereumSend/run.sh bridge 5
       ```
-    * (5.3) The validators will catch the event and start the process to sign the transaction.
-    * (5.4) As soon as the signature is generated and sent, the balance of the bridge account in both chains will be changed:
+    * (5.2) The validators will catch the event and start the process to sign the transaction.
+    * (5.3) As soon as the signature is generated and sent, the balance of the bridge account in both chains will be changed:
       ```
-      TARGET_NETWORK=<network> ./src/test-services/ethereumBalance/run.sh 0x94b40CC641Ed7db241A1f04C8896ba6f6cC36b85
+      ./src/test-services/ethereumBalance/run.sh <ethereum bridge address>
       ```
-      should report non-zero balance
+      should report non-zero balance,
       ```
-      ./tbnbcli account <address of the bridge account> \
-        --chain-id=Binance-Chain-Nile --node=data-seed-pre-2-s1.binance.org:80 --trust-node
+      ./src/test-services/binanceBalance/run.sh <binance bridge address>
       ```
       should report about the balance reduction.
-      The balance and transactions related to the bridge account in the Binance Chain could be checked in [Binance Testnet Explorer](https://testnet-explorer.binance.org).
-    * (5.5) Check that the tokens was transferred to the first test account either by `tbnbcli` or by [Binance Testnet Explorer](https://testnet-explorer.binance.org).
+    * (5.4) Check that the tokens were transferred properly to the test account:
+      ```
+      ./src/test-services/binanceBalance/run.sh <test account address>
+      ```
 6. Transfer tokens from the Binance Chain to Ethereum-based chain:
-    * Use either `tbnbcli` or the [Binance testnet wallet](https://testnet.binance.org/) to send tokens to the bridge account:
+    * (6.1) Send some amount of tokens to the bridge account:
       ```
-      ./tbnbcli send --from test_account1 --to <address of the bridge account> \ 
-        --amount 300000000:ETB0819-863 --chain-id=Binance-Chain-Nile \
-        --node=data-seed-pre-2-s1.binance.org:80 --memo "any note"
+      PRIVATE_KEY=<test account private key> ./src/test-services/binanceSend/run.sh <binance bridge address> 3
       ```
-    * Check the balances of the test account on both sides of the bridge to see that the funds were transferred properly. 
+    * (6.2) Check the balances of the test account on both sides of the bridge to see that the funds were transferred properly using commands from (5.3), (5.4).
 7. Bridge supports changing the list of validators and required voting threshold via voting process, and then keys regeneration.
     * (7.0) Obtain information about current epoch, current list validators, upcoming epoch information, bridge state via:
       ```
-      ./curl http://localhost:$PORT/info
+      curl http://localhost:$PORT/info
       ```
       Where `$PORT` is specific port for some validator oracle.
       The response object contains lots of useful information about current bridge state.
@@ -247,21 +187,156 @@ The public Binance Chain testnet will keep a BEP2 token.
         * (7.2.2) Change threshold for the next epoch, via sending `$THRESHOLD` requests to `/vote/changeThreshold/$THRESHOLD`.
     * (7.3) Start keygen process for next epoch, via sending `$THRESHOLD` requests to `/vote/startKeygen` url. Bridge 
       state should be successfully changed to `keygen`, and in some time to `funds_transfer`, and then to `ready`.
-    * (7.4) If keygen process at some state was stopped(i. e. one validator turned of his oracle), 
-      it can be cancelled via via sending `$THRESHOLD + 1` requests to `/vote/cancelKeygen` url. After
+    * (7.4) If keygen process at some state was stopped(i. e. one validator turned off his oracle), 
+      it can be cancelled via via sending `$THRESHOLD` requests to `/vote/cancelKeygen` url. After
       keygen cancellation, bridge state will return to `voting`, and later it can be restarted manually 
       once again.
 
+### Running demo in staging mode
+
+Staging mode demo is similar to development mode demo, but requires additional manual actions for preparing demo.
+Make sure, to first run demo in development mode, before trying to run it in the staging environment. 
+
+1. Preparation
+    * (1.1) Download `tbnbcli` from https://github.com/binance-chain/node-binary/tree/master/cli.
+    * (1.2) Create a new account through the [web-interface](https://testnet.binance.org/en/create) in the Binance testnet wallet. Copy the private key and mnemonic phrase. The private key will be used to import it in an Ethereum Wallet. The mnemonic phrase is to recover the BNB with `tbnbcli`.
+    * (1.3) Recover the account in the console with the mnemonic.
+      ```
+      ./tbnbcli keys add test_account1 --recover
+      ```
+    * (1.4) Create few BNB accounts from the console. They will be donors to provide enough funds to issue a BEP2 tokens (500 BNB required).
+      ```
+      ./tbnbcli keys add test_account2
+      ./tbnbcli keys add test_account3
+      ```
+    * (1.5) Register on the Binance site and fund the accounts from the [testnet faucet](https://www.binance.com/en/dex/testnet/address).
+    * (1.6) Re-arrange funds on the accounts as so the first account will have 550 BNB and others 10-20 BNBs to make transactions.
+      ```
+      ./tbnbcli send --from test_account2 --to <address of the first account> \ 
+        --amount 18500000000:BNB --chain-id=Binance-Chain-Nile \
+        --node=data-seed-pre-2-s1.binance.org:80 --memo "donate"
+      ./tbnbcli send --from test_account3 --to <address of the first account> \
+        --amount 18500000000:BNB --chain-id=Binance-Chain-Nile 
+        --node=data-seed-pre-2-s1.binance.org:80 --memo "donate"
+      ```
+    * (1.7) Issue the BEP2 token from the first account. `3141500000000000` corresponds to `31415000.0` tokens.
+      ```
+      ./tbnbcli token issue --token-name "ERC20toBEP2Bridge" --total-supply 3141500000000000 \
+        --symbol ETB0819 --mintable --from test_account1 --chain-id=Binance-Chain-Nile \
+        --node=data-seed-pre-2-s1.binance.org:80 --trust-node
+      ```
+      In the real deployment most probably the token must not be mintable.
+    * (1.8) Get the BEP2 token ID in `denom` field (in this example it is `ETB0819-863`).
+      ```
+      ./tbnbcli account <address of the first account> \
+        --chain-id=Binance-Chain-Nile --node=data-seed-pre-2-s1.binance.org:80 --trust-node
+      ```
+    * (1.9) Clone the repo and initialize git submodules:
+      ```
+      git clone --recurse-submodules https://github.com/k1rill-fedoseev/eth-to-bnc-bridge.git
+      ```
+    * (1.10) Build TSS to be used in the bridge oracles:
+      ```
+      docker build -t tss ./src/tss
+      ```
+2. Run test environment
+    * (2.1) Prepare three private keys for validators. Get the Ethereum account addresses for these keys.
+    * (2.2) Modify `src/deploy/deploy-home/.env.staging` and specify the token contract address in 
+    the Kovan network via `HOME_TOKEN_ADDRESS` (use empty address `0x` if you want to create new 
+    ERC20 contract while deployment). \
+    Set `VALIDATOR_ADDRESS_*` to Ethereum addresses obtained in the previous step. 
+    * (2.3) Modify `src/deploy/.keys.staging` and specify private keys for prefunded accounts in both networks.
+    These accounts are used for contract deployment. Use `src/deploy/.keys.staging.example` as an example.
+    * (2.4) Deploy contracts
+      ```
+      TARGET_NETWORK=staging ./demo/start-ethereum-environment.sh
+      ```
+      This command will deploy ERC20 contract and also mint tokens if you left `HOME_TOKEN_ADDRESS` empty,
+      the owner of tokens is the address that corresponds to the private key specified in 
+      `HOME_PRIVATE_KEY` of `src/deploy/.keys.staging`.\
+      Deployed contract addresses will be automatically updated in all required validators 
+      and test services configs.
+    * (2.5) Prefund validator accounts in home network (Kovan):
+      ```
+      TARGET_NETWORK=staging ./src/test-services/ethereumSend/run.sh <Nth validator address> 0 0.5
+      ```
+    * (2.6) Prefund validator accounts in side network (Sokol):
+      ```
+      TARGET_NETWORK=staging ./src/test-services/sidePrefund/run.sh <Nth validator address> 1
+      ```
+    * (2.7) Send few tokens and coins from the current token owner to the first account. Coins are needed to pay transaction fees.
+      ```
+      TARGET_NETWORK=staging ./src/test-services/ethereumSend/run.sh <first account Ethereum address> 5 0.5
+      ```
+    * (2.8) Check that the tokens were transferred properly:
+      ```
+      TARGET_NETWORK=staging ./src/test-services/ethereumBalance/run.sh <first account Ethereum address>
+      ``` 
+3. Run validators nodes:
+    * (3.1) Modify the parameter `FOREIGN_ASSET` in `demo/validator1/.env.staging`, `demo/validator2/.env.staging` 
+    and `demo/validator3/.env.staging` to the identificator of the token (step 1.8) that the oracle will track. \
+    For staging environment additionally specify `VALIDATOR_PRIVATE_KEY` in the `demo/validator<N>/.keys.staging` (step 2.2.1)
+    * (3.2) Run three validators in separate terminal sessions.
+      ```
+      N=1 TARGET_NETWORK=staging ./demo/validator-demo.sh
+      N=2 TARGET_NETWORK=staging ./demo/validator-demo.sh
+      N=3 TARGET_NETWORK=staging ./demo/validator-demo.sh
+      ```
+      Wait for when the line like the following appears:
+      ```
+      keygen_1 | Generated multisig account in binance chain: tbnb1mutgnx9n9devmrjh3d0wz332fl8ymgel6tydx6
+      ```
+      The line contains the address of the bridge address in the Binance Chain.
+4. Initialize the state of the bridge account in the Binance Chain
+    * (4.1) Fill the balance Fund with BNB coins as so the account will be able to make transactions:
+      ```
+      ./src/test-services/binanceSend/run.sh  <address of the bridge account> 100 1
+      ```
+    To check the balance of the bridge account use `./src/test-services/binanceBalance/run.sh` 
+    or [Binance Testnet Explorer](https://testnet-explorer.binance.org). It should report about two assets owned by the account.
+5. Transfer tokens from Ethereum-based chain to the Binance Chain:
+    * (5.1) Send some amount of tokens to the bridge contract, for `PRIVATE_KEY` use some of the keys from step (1.3):
+      ```
+      TARGET_NETWORK=staging PRIVATE_KEY=<test account private key> ./src/test-services/ethereumSend/run.sh bridge 5
+      ```
+    * (5.2) The validators will catch the event and start the process to sign the transaction.
+    * (5.3) As soon as the signature is generated and sent, the balance of the bridge account in both chains will be changed:
+      ```
+      ./src/test-services/ethereumBalance/run.sh <ethereum bridge address>
+      ```
+      should report non-zero balance,
+      ```
+      ./src/test-services/binanceBalance/run.sh <binance bridge address>
+      ```
+      should report about the balance reduction.
+    * (5.4) Check that the tokens were transferred properly to the test account:
+      ```
+      ./src/test-services/binanceBalance/run.sh <test account address>
+      ```
+      The balance and transactions related to the bridge account in the Binance Chain could be checked in 
+      [Binance Testnet Explorer](https://testnet-explorer.binance.org).
+6. Transfer tokens from the Binance Chain to Ethereum-based chain:
+    * (6.1) Send some amount of tokens to the bridge account:
+      ```
+      TARGET_NETWORK=staging PRIVATE_KEY=<test account private key> ./src/test-services/binanceSend/run.sh <binance bridge address> 3
+      ```
+    * (6.2) Check the balances of the test account on both sides of the bridge to see that the funds were transferred properly using commands from (5.3), (5.4). 
+7. Steps for updating validators list are exactly the same for both demo modes. Check the steps from development mode.
+
 ### Finish demo
 
 1. Stop all validator instances by pressing `^C` in the terminal.
-2. Stop the local testnets:
+2. Stop the local testnets (if any):
    ```
+   docker kill binance-testnet_http-api_1
+   docker kill binance-testnet_node_1
+   docker kill binance-testnet_api-server_1
    docker kill ganache_home
    docker kill ganache_side
    ```
 3. Remove virtual networks:
    ```
+   docker network rm binance_net
    docker network rm blockchain_home
    docker network rm blockchain_side
    docker network rm validator1_test_network

From f96cc303978cacf6c2df85b00d29c7ca0bbfad2b Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 12 Nov 2019 17:38:41 +0300
Subject: [PATCH 090/129] Updated tests readme

---
 tests/README.md | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/tests/README.md b/tests/README.md
index 85ab76a..c6aa152 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -14,7 +14,6 @@ CircleCI uses this tests for testing the code base.
 
 To run the bridge tests, you first need to clean old test environment, and then initialize a new one:
 ```bash
-./demo/clean.sh
 ./tests/init.sh
 ```
 This will create a clean development environment, using `./demo/start-environment.sh`.
@@ -25,13 +24,12 @@ and wait until they are ready.
 
 Next, you can run the tests:
 ```bash
-FOREIGN_PRIVATE_KEY=0000000000000000000000000000000000000000000000000000000000000000 ./tests/run.sh
+./tests/run.sh
 ```
-`FOREIGN_PRIVATE_KEY` is the key, that will be used for initial prefunding first 
-generated binance side of the bridge. 
 
 After tests are done, all active docker containers can be killed.
 ```bash
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}')
 docker kill ganache_side ganache_home
+docker kill binance-testnet_http-api_1 binance-testnet_node_1 binance-testnet_api-server_1
 ``` 

From 7f6030ee9444bdac177fc2f574232997a2b631d4 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 12 Nov 2019 18:18:45 +0300
Subject: [PATCH 091/129] Fixed minor bugs in eth-watcher

---
 demo/validator1/.env.staging                   | 12 ++++++------
 demo/validator2/.env.staging                   | 10 +++++-----
 demo/validator3/.env.staging                   | 10 +++++-----
 src/deploy/deploy-home/.env.staging            |  2 +-
 src/oracle/ethWatcher/ethWatcher.js            |  6 +++---
 src/test-services/ethereumBalance/.env.staging |  2 +-
 src/test-services/ethereumSend/.env.staging    |  4 ++--
 7 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 83a0313..9b0cfc2 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -1,11 +1,11 @@
 HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
-HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
-HOME_START_BLOCK=13276224
-HOME_MAX_FETCH_RANGE_SIZE=10
+HOME_BRIDGE_ADDRESS=0x01eD0d6350542E7643cB7bba4bccc96FedE0B616
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
+HOME_START_BLOCK=14760000
+HOME_MAX_FETCH_RANGE_SIZE=50
 
 SIDE_RPC_URL=https://sokol.poa.network
-SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
+SIDE_SHARED_DB_ADDRESS=0x7B307e73Ba9808BcA7cf24F1E7Ae9372faCeD102
 
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
@@ -24,4 +24,4 @@ VOTES_PROXY_PORT=5001
 
 SIGN_RESTART_PORT=6001
 
-LOG_LEVEL=info
+LOG_LEVEL=trace
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index 94c04a1..4e97765 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -1,11 +1,11 @@
 HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
-HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
-HOME_START_BLOCK=13276224
-HOME_MAX_FETCH_RANGE_SIZE=10
+HOME_BRIDGE_ADDRESS=0x01eD0d6350542E7643cB7bba4bccc96FedE0B616
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
+HOME_START_BLOCK=14760000
+HOME_MAX_FETCH_RANGE_SIZE=50
 
 SIDE_RPC_URL=https://sokol.poa.network
-SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
+SIDE_SHARED_DB_ADDRESS=0x7B307e73Ba9808BcA7cf24F1E7Ae9372faCeD102
 
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index 458974f..9de99d3 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -1,11 +1,11 @@
 HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
-HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
-HOME_START_BLOCK=13276224
-HOME_MAX_FETCH_RANGE_SIZE=10
+HOME_BRIDGE_ADDRESS=0x01eD0d6350542E7643cB7bba4bccc96FedE0B616
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
+HOME_START_BLOCK=14760000
+HOME_MAX_FETCH_RANGE_SIZE=50
 
 SIDE_RPC_URL=https://sokol.poa.network
-SIDE_SHARED_DB_ADDRESS=0xda9a1cA2Fcb18cAB02934269369627D2b4ea8902
+SIDE_SHARED_DB_ADDRESS=0x7B307e73Ba9808BcA7cf24F1E7Ae9372faCeD102
 
 FOREIGN_URL=https://testnet-dex.binance.org/
 FOREIGN_CHAIN_ID=Binance-Chain-Nile
diff --git a/src/deploy/deploy-home/.env.staging b/src/deploy/deploy-home/.env.staging
index 550b4bc..2988dc3 100644
--- a/src/deploy/deploy-home/.env.staging
+++ b/src/deploy/deploy-home/.env.staging
@@ -3,7 +3,7 @@ HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
 #HOME_PRIVATE_KEY is taken from src/deploy/.keys.staging
 
 #Set to '0x' for redeployment of token contract in staging environment
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
 
 VALIDATOR_ADDRESS_1=0xaaaaB15630f63cA01bb50943AaAb4008CB53748D
 VALIDATOR_ADDRESS_2=0xbbbb63D6Fc58bD14dAF9eeF653650c4D10f3dBC8
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 813ff0b..a8d616e 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -6,7 +6,7 @@ const logger = require('./logger')
 const redis = require('./db')
 const { connectRabbit, assertQueue } = require('./amqp')
 const { publicKeyToAddress } = require('./crypto')
-const { delay } = require('./wait')
+const { delay, retry } = require('./wait')
 
 const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, RABBITMQ_URL, HOME_START_BLOCK, VALIDATOR_PRIVATE_KEY
@@ -266,7 +266,7 @@ async function loop() {
 
   for (let curBlockNumber = blockNumber, i = 0; curBlockNumber <= endBlock; curBlockNumber += 1) {
     let epochTimeUpdated = false
-    const curBlockTimestamp = await getBlockTimestamp(curBlockNumber)
+    const curBlockTimestamp = await retry(() => getBlockTimestamp(curBlockNumber))
     while (i < bridgeEvents.length && bridgeEvents[i].blockNumber === curBlockNumber) {
       const event = bridge.interface.parseLog(bridgeEvents[i])
       logger.trace('Consumed event %o %o', event, bridgeEvents[i])
@@ -334,7 +334,7 @@ async function loop() {
 
   blockNumber = endBlock + 1
   // Exec redis tx
-  await redisTx.incr('homeBlock').exec()
+  await redisTx.set('homeBlock', blockNumber).exec()
   await redis.save()
 }
 
diff --git a/src/test-services/ethereumBalance/.env.staging b/src/test-services/ethereumBalance/.env.staging
index 4e7f9da..99f7e77 100644
--- a/src/test-services/ethereumBalance/.env.staging
+++ b/src/test-services/ethereumBalance/.env.staging
@@ -1,2 +1,2 @@
 HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
diff --git a/src/test-services/ethereumSend/.env.staging b/src/test-services/ethereumSend/.env.staging
index adfeac7..b18ceb8 100644
--- a/src/test-services/ethereumSend/.env.staging
+++ b/src/test-services/ethereumSend/.env.staging
@@ -1,5 +1,5 @@
 HOME_RPC_URL=https://kovan.infura.io/v3/5d7bd94c50ed43fab1cb8e74f58678b0
-HOME_BRIDGE_ADDRESS=0x6ADCa5e691341fb9de8927d15c0a89B83A4E665e
-HOME_TOKEN_ADDRESS=0x57d2533B640cfb58f8f1F69C14c089968Da9fdFc
+HOME_BRIDGE_ADDRESS=0x01eD0d6350542E7643cB7bba4bccc96FedE0B616
+HOME_TOKEN_ADDRESS=0x7c7daEf752C80A6d229D4a642B9336ceCd7e26b0
 
 #HOME_PRIVATE_KEY is taken from src/test-services/.keys.staging

From 1de3b2d75a1284cb16278c520b7a811c55ac5a21 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 12 Nov 2019 18:42:26 +0300
Subject: [PATCH 092/129] Minimized number of eth block timestamp requests

---
 demo/validator1/.env.staging        |  2 +-
 src/oracle/bncWatcher/bncWatcher.js | 17 ++++-------------
 src/oracle/ethWatcher/ethWatcher.js | 14 ++++++--------
 3 files changed, 11 insertions(+), 22 deletions(-)

diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 9b0cfc2..89e3609 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -24,4 +24,4 @@ VOTES_PROXY_PORT=5001
 
 SIGN_RESTART_PORT=6001
 
-LOG_LEVEL=trace
+LOG_LEVEL=info
diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 1320e43..159156c 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -79,6 +79,7 @@ async function fetchTimeIntervalsQueue() {
       break
     }
     const data = JSON.parse(msg.content)
+    let accept = false
     logger.trace('Consumed time interval event %o', data)
     if (epoch !== null && epoch !== data.epoch) {
       logger.warn('Two consequently events have different epochs, should not be like this')
@@ -92,25 +93,15 @@ async function fetchTimeIntervalsQueue() {
       break
     }
     if (epoch === null) {
+      accept = true
       epoch = data.epoch
       startTime = await redis.get(`foreignTime${epoch}`)
       logger.trace(`Retrieved epoch ${epoch} and start time ${startTime} from redis`)
       if (startTime === null) {
         logger.warn(`Empty foreign time for epoch ${epoch}`)
       }
-    } /*
-    if (data.endTime) {
-      if (data.endTime - startTime < FOREIGN_FETCH_MAX_TIME_INTERVAL
-        && data.endTime < lastBncBlockTime) {
-        endTime = data.endTime
-        channel.ack(msg)
-      } else {
-        logger.trace('Requeuing current queue message')
-        channel.nack(msg, false, true)
-      }
-      break
-    } */
-    if (data.prolongedTime - startTime < FOREIGN_FETCH_MAX_TIME_INTERVAL
+    }
+    if ((data.prolongedTime - startTime < FOREIGN_FETCH_MAX_TIME_INTERVAL || accept)
       && data.prolongedTime < lastBncBlockTime) {
       endTime = data.prolongedTime
       channel.ack(msg)
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index a8d616e..a37d412 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -225,8 +225,7 @@ async function initialize() {
   rangeSize = (await bridge.getRangeSize()).toNumber()
   logger.debug(`Range size ${rangeSize}`)
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.getValidators())
-    .includes(validatorAddress)
+  isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -266,7 +265,6 @@ async function loop() {
 
   for (let curBlockNumber = blockNumber, i = 0; curBlockNumber <= endBlock; curBlockNumber += 1) {
     let epochTimeUpdated = false
-    const curBlockTimestamp = await retry(() => getBlockTimestamp(curBlockNumber))
     while (i < bridgeEvents.length && bridgeEvents[i].blockNumber === curBlockNumber) {
       const event = bridge.interface.parseLog(bridgeEvents[i])
       logger.trace('Consumed event %o %o', event, bridgeEvents[i])
@@ -293,7 +291,7 @@ async function loop() {
           activeEpoch = true
           epochTimeIntervalsQueue.send({
             blockNumber: curBlockNumber,
-            startTime: curBlockTimestamp * 1000,
+            startTime: await retry(() => getBlockTimestamp(curBlockNumber)) * 1000,
             epoch
           })
           epochTimeUpdated = true
@@ -304,7 +302,7 @@ async function loop() {
           activeEpoch = false
           epochTimeIntervalsQueue.send({
             blockNumber: curBlockNumber,
-            prolongedTime: curBlockTimestamp * 1000,
+            prolongedTime: await retry(() => getBlockTimestamp(curBlockNumber)) * 1000,
             epoch
           })
           break
@@ -314,10 +312,10 @@ async function loop() {
       i += 1
     }
 
-    if (!epochTimeUpdated && epoch > 0 && activeEpoch) {
+    if (curBlockNumber === endBlock && !epochTimeUpdated && epoch > 0 && activeEpoch) {
       epochTimeIntervalsQueue.send({
         blockNumber: curBlockNumber,
-        prolongedTime: curBlockTimestamp * 1000,
+        prolongedTime: await retry(() => getBlockTimestamp(curBlockNumber)) * 1000,
         epoch
       })
     }
@@ -334,7 +332,7 @@ async function loop() {
 
   blockNumber = endBlock + 1
   // Exec redis tx
-  await redisTx.set('homeBlock', blockNumber).exec()
+  await redisTx.set('homeBlock', endBlock).exec()
   await redis.save()
 }
 

From 38e96b5552928bc3227ccadcc73a925b0cd0769d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 13:28:43 +0300
Subject: [PATCH 093/129] Contract support of closing epoch process on binance
 side

---
 src/deploy/deploy-home/.env.development       |  2 +
 src/deploy/deploy-home/.env.staging           |  2 +
 src/deploy/deploy-home/contracts/Bridge.sol   | 72 ++++++++++++++++---
 .../deploy-home/migrations/1_deployment.js    |  5 +-
 4 files changed, 68 insertions(+), 13 deletions(-)

diff --git a/src/deploy/deploy-home/.env.development b/src/deploy/deploy-home/.env.development
index 38ec3e0..7c3f528 100644
--- a/src/deploy/deploy-home/.env.development
+++ b/src/deploy/deploy-home/.env.development
@@ -15,3 +15,5 @@ MIN_TX_LIMIT=10000000000000000
 MAX_TX_LIMIT=100000000000000000000
 
 BLOCKS_RANGE_SIZE=10
+
+CLOSE_EPOCH_FLAG=true
diff --git a/src/deploy/deploy-home/.env.staging b/src/deploy/deploy-home/.env.staging
index 2988dc3..7fdaf13 100644
--- a/src/deploy/deploy-home/.env.staging
+++ b/src/deploy/deploy-home/.env.staging
@@ -16,3 +16,5 @@ MIN_TX_LIMIT=10000000000000000
 MAX_TX_LIMIT=100000000000000000000
 
 BLOCKS_RANGE_SIZE=25
+
+CLOSE_EPOCH_FLAG=true
diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index 63ce4e1..cdd3f7f 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -5,6 +5,8 @@ import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
 contract Bridge {
     event ExchangeRequest(uint value, uint nonce);
     event EpochEnd(uint indexed epoch);
+    event EpochClose(uint indexed epoch);
+    event ForceSign();
     event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);
     event NewEpochCancelled(uint indexed epoch);
     event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);
@@ -19,10 +21,12 @@ contract Bridge {
         uint nonce;
         uint x;
         uint y;
+        bool closeEpoch;
     }
 
     enum Status {
         READY, // bridge is in ready to perform operations
+        CLOSING_EPOCH, // generating transaction for blocking binance side of the bridge
         VOTING, // voting for changing in next epoch, but still ready
         KEYGEN, //keygen, can be cancelled
         FUNDS_TRANSFER // funds transfer, cannot be cancelled
@@ -31,11 +35,13 @@ contract Bridge {
     enum Vote {
         CONFIRM_KEYGEN,
         CONFIRM_FUNDS_TRANSFER,
+        CONFIRM_CLOSE_EPOCH,
         START_VOTING,
         ADD_VALIDATOR,
         REMOVE_VALIDATOR,
         CHANGE_THRESHOLD,
         CHANGE_RANGE_SIZE,
+        CHANGE_CLOSE_EPOCH,
         START_KEYGEN,
         CANCEL_KEYGEN,
         TRANSFER
@@ -57,7 +63,7 @@ contract Bridge {
     uint minTxLimit;
     uint maxTxLimit;
 
-    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize) public {
+    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize, bool closeEpoch) public {
         require(validators.length > 0);
         require(threshold <= validators.length);
 
@@ -72,11 +78,12 @@ contract Bridge {
             threshold : threshold,
             rangeSize : rangeSize,
             startBlock : 0,
-            endBlock : uint(-1),
-            nonce : uint(-1),
+            endBlock : uint(- 1),
+            nonce : uint(- 1),
             x : 0,
-            y : 0
-        });
+            y : 0,
+            closeEpoch : closeEpoch
+            });
 
         minTxLimit = limits[0];
         maxTxLimit = limits[1];
@@ -91,8 +98,13 @@ contract Bridge {
         _;
     }
 
-    modifier readyOrVoting {
-        require(status == Status.READY || status == Status.VOTING, "Not in ready or voting state");
+    modifier closingEpoch {
+        require(status == Status.CLOSING_EPOCH, "Not in closing epoch state");
+        _;
+    }
+
+    modifier readyOrClosing {
+        require(status == Status.READY || status == Status.CLOSING_EPOCH, "Not in ready or closing epoch state");
         _;
     }
 
@@ -101,6 +113,11 @@ contract Bridge {
         _;
     }
 
+    modifier readyOrVoting {
+        require(status == Status.READY || status == Status.VOTING, "Not in ready or voting state");
+        _;
+    }
+
     modifier keygen {
         require(status == Status.KEYGEN, "Not in keygen state");
         _;
@@ -129,7 +146,7 @@ contract Bridge {
         emit ExchangeRequest(value, getNonce());
     }
 
-    function transfer(bytes32 hash, address to, uint value) public readyOrVoting currentValidator {
+    function transfer(bytes32 hash, address to, uint value) public readyOrClosing currentValidator {
         if (tryVote(Vote.TRANSFER, hash, to, value)) {
             tokenContract.transfer(to, value);
         }
@@ -161,12 +178,19 @@ contract Bridge {
         if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {
             status = Status.READY;
             states[nextEpoch].startBlock = block.number;
-            states[nextEpoch].nonce = uint(-1);
+            states[nextEpoch].nonce = uint(- 1);
             epoch = nextEpoch;
             emit EpochStart(epoch, getX(), getY());
         }
     }
 
+    function confirmCloseEpoch() public closingEpoch currentValidator {
+        if (tryConfirm(Vote.CONFIRM_CLOSE_EPOCH)) {
+            status = Status.VOTING;
+            emit EpochEnd(epoch);
+        }
+    }
+
     function getParties() view public returns (uint) {
         return getParties(epoch);
     }
@@ -227,6 +251,18 @@ contract Bridge {
         return states[epoch].y;
     }
 
+    function getCloseEpoch() view public returns (bool) {
+        return getCloseEpoch(epoch);
+    }
+
+    function getNextCloseEpoch() view public returns (bool) {
+        return getCloseEpoch(nextEpoch);
+    }
+
+    function getCloseEpoch(uint _epoch) view public returns (bool) {
+        return states[_epoch].closeEpoch;
+    }
+
     function getPartyId() view public returns (uint) {
         address[] memory validators = getValidators();
         for (uint i = 0; i < getParties(); i++) {
@@ -256,13 +292,21 @@ contract Bridge {
     function startVoting() public readyOrVoting currentValidator {
         if (tryVote(Vote.START_VOTING, epoch)) {
             nextEpoch++;
-            status = Status.VOTING;
             states[nextEpoch].endBlock = block.number;
             states[nextEpoch].threshold = getThreshold();
             states[nextEpoch].validators = getValidators();
             states[nextEpoch].rangeSize = getRangeSize();
+            states[nextEpoch].closeEpoch = getCloseEpoch();
 
-            emit EpochEnd(epoch);
+            if (status == Status.READY && getCloseEpoch()) {
+                status = Status.CLOSING_EPOCH;
+                emit ForceSign();
+                emit EpochClose(epoch);
+            } else {
+                status = Status.VOTING;
+                emit ForceSign();
+                emit EpochEnd(epoch);
+            }
         }
     }
 
@@ -307,6 +351,12 @@ contract Bridge {
         }
     }
 
+    function voteChangeCloseEpoch(bool closeEpoch) public voting currentValidator {
+        if (tryVote(Vote.CHANGE_CLOSE_EPOCH, closeEpoch ? 1 : 0)) {
+            states[nextEpoch].closeEpoch = closeEpoch;
+        }
+    }
+
     function voteStartKeygen() public voting currentValidator {
         require(getNextThreshold() <= getNextParties(), "Invalid threshold number");
 
diff --git a/src/deploy/deploy-home/migrations/1_deployment.js b/src/deploy/deploy-home/migrations/1_deployment.js
index fe88868..05984da 100644
--- a/src/deploy/deploy-home/migrations/1_deployment.js
+++ b/src/deploy/deploy-home/migrations/1_deployment.js
@@ -5,7 +5,7 @@ const addresses = Object.entries(process.env)
   .map(([, value]) => value)
 
 const {
-  THRESHOLD, HOME_TOKEN_ADDRESS, MIN_TX_LIMIT, MAX_TX_LIMIT, BLOCKS_RANGE_SIZE
+  THRESHOLD, HOME_TOKEN_ADDRESS, MIN_TX_LIMIT, MAX_TX_LIMIT, BLOCKS_RANGE_SIZE, CLOSE_EPOCH_FLAG
 } = process.env
 
 module.exports = (deployer) => {
@@ -15,6 +15,7 @@ module.exports = (deployer) => {
     addresses,
     HOME_TOKEN_ADDRESS,
     [MIN_TX_LIMIT, MAX_TX_LIMIT],
-    BLOCKS_RANGE_SIZE
+    BLOCKS_RANGE_SIZE,
+    CLOSE_EPOCH_FLAG === 'true'
   )
 }

From 7f575238e12449b2ae2618eb782c4fb7ecdd2079 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 13:29:58 +0300
Subject: [PATCH 094/129] Support of closing epoch in oracle scripts

---
 src/oracle/ethWatcher/ethWatcher.js |  36 ++++++++-
 src/oracle/proxy/contractsAbi.js    |   4 +
 src/oracle/proxy/index.js           |  27 ++++++-
 src/oracle/proxy/utils.js           |   6 +-
 src/oracle/tss-sign/signer.js       |  42 ++++++++--
 src/oracle/tss-sign/tx.js           | 121 ++++++++++++++++------------
 6 files changed, 171 insertions(+), 65 deletions(-)

diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index a37d412..18f0491 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -21,6 +21,8 @@ const bridgeAbi = [
   'event NewEpochCancelled(uint indexed epoch)',
   'event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch)',
   'event EpochStart(uint indexed epoch, uint x, uint y)',
+  'event EpochClose(uint indexed epoch)',
+  'event ForceSign()',
   'function getThreshold(uint epoch) view returns (uint)',
   'function getParties(uint epoch) view returns (uint)',
   'function getRangeSize() view returns (uint)',
@@ -160,7 +162,6 @@ async function sendSign(event, transactionHash) {
 }
 
 async function sendStartSign() {
-  redisTx.incr(`foreignNonce${epoch}`)
   signQueue.send({
     epoch,
     blockNumber,
@@ -169,6 +170,7 @@ async function sendStartSign() {
     parties: (await bridge.getParties(epoch)).toNumber()
   })
   foreignNonce[epoch] += 1
+  redisTx.incr(`foreignNonce${epoch}`)
 }
 
 async function processEpochStart(event) {
@@ -186,6 +188,19 @@ async function processEpochStart(event) {
   foreignNonce[epoch] = 0
 }
 
+async function sendEpochClose() {
+  logger.debug(`Consumed epoch ${epoch} close event`)
+  signQueue.send({
+    closeEpoch: epoch,
+    blockNumber,
+    nonce: foreignNonce[epoch],
+    threshold: (await bridge.getThreshold(epoch)).toNumber(),
+    parties: (await bridge.getParties(epoch)).toNumber()
+  })
+  foreignNonce[epoch] += 1
+  redisTx.incr(`foreignNonce${epoch}`)
+}
+
 async function initialize() {
   channel = await connectRabbit(RABBITMQ_URL)
   exchangeQueue = await assertQueue(channel, 'exchangeQueue')
@@ -264,6 +279,8 @@ async function loop() {
   }))
 
   for (let curBlockNumber = blockNumber, i = 0; curBlockNumber <= endBlock; curBlockNumber += 1) {
+    const rangeOffset = (curBlockNumber + 1 - epochStart) % rangeSize
+    const rangeStart = curBlockNumber - (rangeOffset || rangeSize)
     let epochTimeUpdated = false
     while (i < bridgeEvents.length && bridgeEvents[i].blockNumber === curBlockNumber) {
       const event = bridge.interface.parseLog(bridgeEvents[i])
@@ -306,6 +323,19 @@ async function loop() {
             epoch
           })
           break
+        case 'EpochClose':
+          if (isCurrentValidator) {
+            await sendEpochClose()
+          }
+          break
+        case 'ForceSign':
+          if (isCurrentValidator && lastTransactionBlockNumber > rangeStart) {
+            logger.debug('Consumed force sign event')
+            lastTransactionBlockNumber = 0
+            redisTx.set('lastTransactionBlockNumber', 0)
+            await sendStartSign()
+          }
+          break
         default:
           logger.warn('Unknown event %o', event)
       }
@@ -320,10 +350,10 @@ async function loop() {
       })
     }
 
-    if ((curBlockNumber + 1 - epochStart) % rangeSize === 0) {
+    if (rangeOffset === 0) {
       logger.info('Reached end of the current block range')
 
-      if (lastTransactionBlockNumber > curBlockNumber - rangeSize) {
+      if (isCurrentValidator && lastTransactionBlockNumber > curBlockNumber - rangeSize) {
         logger.info('Sending message to start signature generation for the ended range')
         await sendStartSign()
       }
diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
index 312681c..6f80832 100644
--- a/src/oracle/proxy/contractsAbi.js
+++ b/src/oracle/proxy/contractsAbi.js
@@ -14,17 +14,21 @@ const bridgeAbi = [
   'function getNextThreshold() view returns (uint)',
   'function getValidators() view returns (address[])',
   'function getNextValidators() view returns (address[])',
+  'function getCloseEpoch() view returns (bool)',
+  'function getNextCloseEpoch() view returns (bool)',
   'function status() view returns (uint)',
   'function votesCount(bytes32) view returns (uint)',
   'function getNextPartyId(address a) view returns (uint)',
   'function confirmKeygen(uint x, uint y)',
   'function confirmFundsTransfer()',
+  'function confirmCloseEpoch()',
   'function startVoting()',
   'function voteStartKeygen()',
   'function voteCancelKeygen()',
   'function voteAddValidator(address validator)',
   'function voteRemoveValidator(address validator)',
   'function voteChangeThreshold(uint threshold)',
+  'function voteChangeCloseEpoch(bool closeEpoch)',
   'function transfer(bytes32 hash, address to, uint value)'
 ]
 const sharedDbAbi = [
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 7546cbb..77e9bee 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -189,6 +189,14 @@ async function confirmFundsTransfer(req, res) {
   logger.debug('Confirm funds transfer end')
 }
 
+async function confirmCloseEpoch(req, res) {
+  logger.debug('Confirm close epoch call')
+  const query = bridge.interface.functions.confirmCloseEpoch.encode([])
+  await homeSendQuery(query)
+  res.send()
+  logger.debug('Confirm close epoch end')
+}
+
 async function sendVote(query, req, res, waitFlag = false) {
   try {
     const sentQuery = await homeSendQuery(query)
@@ -257,6 +265,14 @@ async function voteChangeThreshold(req, res) {
   }
 }
 
+async function voteChangeCloseEpoch(req, res) {
+  if (req.params.closeEpoch === 'true' || req.params.closeEpoch === 'false') {
+    logger.info('Voting for changing close epoch')
+    const query = bridge.interface.functions.voteChangeCloseEpoch.encode([req.params.closeEpoch === 'true'])
+    await sendVote(query, req, res)
+  }
+}
+
 async function voteRemoveValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for removing validator')
@@ -298,14 +314,17 @@ async function info(req, res) {
   logger.debug('Info start')
   try {
     const [
-      x, y, epoch, rangeSize, nextRangeSize, epochStartBlock, foreignNonce, nextEpoch,
-      threshold, nextThreshold, validators, nextValidators, status, homeBalance
+      x, y, epoch, rangeSize, nextRangeSize, closeEpoch, nextCloseEpoch, epochStartBlock,
+      foreignNonce, nextEpoch, threshold, nextThreshold, validators, nextValidators, status,
+      homeBalance
     ] = await Promise.all([
       bridge.getX().then((value) => new BN(value).toString(16)),
       bridge.getY().then((value) => new BN(value).toString(16)),
       bridge.epoch().then(boundX),
       bridge.getRangeSize().then(boundX),
       bridge.getNextRangeSize().then(boundX),
+      bridge.getCloseEpoch(),
+      bridge.getNextCloseEpoch(),
       bridge.getStartBlock().then(boundX),
       bridge.getNonce().then(boundX),
       bridge.nextEpoch().then(boundX),
@@ -338,6 +357,8 @@ async function info(req, res) {
       nextEpoch,
       threshold,
       nextThreshold,
+      closeEpoch,
+      nextCloseEpoch,
       homeBridgeAddress: HOME_BRIDGE_ADDRESS,
       foreignBridgeAddress: foreignAddress,
       foreignNonce,
@@ -371,6 +392,7 @@ app.post('/signupsign', signupSign)
 
 app.post('/confirmKeygen', confirmKeygen)
 app.post('/confirmFundsTransfer', confirmFundsTransfer)
+app.post('/confirmCloseEpoch', confirmCloseEpoch)
 app.post('/transfer', transfer)
 
 votesProxyApp.get('/vote/startVoting', voteStartVoting)
@@ -379,6 +401,7 @@ votesProxyApp.get('/vote/cancelKeygen', voteCancelKeygen)
 votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
 votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
 votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
+votesProxyApp.get('/vote/changeCloseEpoch/:closeEpoch', voteChangeCloseEpoch)
 votesProxyApp.get('/info', info)
 
 async function main() {
diff --git a/src/oracle/proxy/utils.js b/src/oracle/proxy/utils.js
index 72bd8e9..9bbdb58 100644
--- a/src/oracle/proxy/utils.js
+++ b/src/oracle/proxy/utils.js
@@ -11,10 +11,12 @@ function decodeStatus(status) {
     case 0:
       return 'ready'
     case 1:
-      return 'voting'
+      return 'closing_epoch'
     case 2:
-      return 'keygen'
+      return 'voting'
     case 3:
+      return 'keygen'
+    case 4:
       return 'funds_transfer'
     default:
       return 'unknown_state'
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 1123998..69181da 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -21,6 +21,7 @@ const SIGN_NONCE_CHECK_INTERVAL = parseInt(process.env.SIGN_NONCE_CHECK_INTERVAL
 const SEND_TIMEOUT = parseInt(process.env.SEND_TIMEOUT, 10)
 
 const httpClient = axios.create({ baseURL: FOREIGN_URL })
+const proxyClient = axios.create({ baseURL: PROXY_URL })
 
 const SIGN_OK = 0
 const SIGN_NONCE_INTERRUPT = 1
@@ -67,8 +68,12 @@ function restart(req, res) {
   }
 }
 
-function confirmFundsTransfer() {
-  exec.execSync(`curl -X POST -H "Content-Type: application/json" "${PROXY_URL}/confirmFundsTransfer"`, { stdio: 'pipe' })
+async function confirmFundsTransfer() {
+  await proxyClient.post('/confirmFundsTransfer')
+}
+
+async function confirmCloseEpoch() {
+  await proxyClient.post('/confirmCloseEpoch')
 }
 
 function getAccountFromFile(file) {
@@ -216,10 +221,10 @@ async function main() {
 
     logger.info('Consumed sign event: %o', data)
     const {
-      nonce, epoch, newEpoch, parties, threshold
+      nonce, epoch, newEpoch, parties, threshold, closeEpoch
     } = data
 
-    const keysFile = `/keys/keys${epoch}.store`
+    const keysFile = `/keys/keys${epoch || closeEpoch}.store`
     const { address: from, publicKey } = getAccountFromFile(keysFile)
     if (from === '') {
       logger.info('No keys found, acking message')
@@ -236,7 +241,34 @@ async function main() {
 
     attempt = 1
 
-    if (!newEpoch) {
+    if (closeEpoch) {
+      while (true) {
+        logger.info(`Building corresponding account flags transaction, nonce ${nonce}`)
+
+        const tx = new Transaction({
+          from,
+          accountNumber: account.account_number,
+          sequence: nonce,
+          flags: 0x01,
+          memo: `Attempt ${attempt}`
+        })
+
+        const hash = sha256(tx.getSignBytes())
+        logger.info(`Starting signature generation for transaction hash ${hash}`)
+        const signResult = await sign(keysFile, hash, tx, publicKey, from)
+
+        if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
+          await confirmCloseEpoch()
+          break
+        }
+
+        // signer either failed, or timed out after parties signup
+        attempt = nextAttempt || attempt + 1
+        nextAttempt = null
+        logger.warn(`Sign failed, starting next attempt ${attempt}`)
+        await delay(1000)
+      }
+    } else if (!newEpoch) {
       const exchanges = await getExchangeMessages(nonce)
       const exchangesData = exchanges.map((exchangeMsg) => JSON.parse(exchangeMsg.content))
 
diff --git a/src/oracle/tss-sign/tx.js b/src/oracle/tss-sign/tx.js
index ee6cfcc..032d4e8 100644
--- a/src/oracle/tss-sign/tx.js
+++ b/src/oracle/tss-sign/tx.js
@@ -12,70 +12,84 @@ const BNB_ASSET = 'BNB'
 class Transaction {
   constructor(options) {
     const {
-      from, accountNumber, sequence, recipients, asset, memo = ''
+      from, accountNumber, sequence, recipients, asset, memo = '', flags
     } = options
 
-    const totalTokens = recipients.reduce(
-      (sum, { tokens }) => sum.plus(new BN(tokens || 0)), new BN(0)
-    )
-    const totalBnbs = recipients.reduce(
-      (sum, { bnbs }) => sum.plus(new BN(bnbs || 0)), new BN(0)
-    )
-    const senderCoins = []
-    if (asset && totalTokens.isGreaterThan(0)) {
-      senderCoins.push({
-        denom: asset,
-        amount: totalTokens.multipliedBy(10 ** 8).toNumber()
-      })
-    }
-    if (totalBnbs.isGreaterThan(0)) {
-      senderCoins.push({
-        denom: BNB_ASSET,
-        amount: totalBnbs.multipliedBy(10 ** 8).toNumber()
-      })
-    }
-    senderCoins.sort((a, b) => a.denom > b.denom)
+    let msg
+    if (flags) {
+      msg = {
+        from: crypto.decodeAddress(from),
+        flags,
+        msgType: 'NewOrderMsg' // until 'SetAccountFlagsMsg' is not available
+      }
 
-    const inputs = [{
-      address: from,
-      coins: senderCoins
-    }]
-    const outputs = recipients.map(({ to, tokens, bnbs }) => {
-      const receiverCoins = []
-      if (asset && tokens) {
-        receiverCoins.push({
+      this.signMsg = {
+        flags,
+        from
+      }
+    } else {
+      const totalTokens = recipients.reduce(
+        (sum, { tokens }) => sum.plus(new BN(tokens || 0)), new BN(0)
+      )
+      const totalBnbs = recipients.reduce(
+        (sum, { bnbs }) => sum.plus(new BN(bnbs || 0)), new BN(0)
+      )
+      const senderCoins = []
+      if (asset && totalTokens.isGreaterThan(0)) {
+        senderCoins.push({
           denom: asset,
-          amount: new BN(tokens).multipliedBy(10 ** 8).toNumber()
+          amount: totalTokens.multipliedBy(10 ** 8).toNumber()
         })
       }
-      if (bnbs) {
-        receiverCoins.push({
+      if (totalBnbs.isGreaterThan(0)) {
+        senderCoins.push({
           denom: BNB_ASSET,
-          amount: new BN(bnbs).multipliedBy(10 ** 8).toNumber()
+          amount: totalBnbs.multipliedBy(10 ** 8).toNumber()
         })
       }
-      receiverCoins.sort((a, b) => a.denom > b.denom)
-      return {
-        address: to,
-        coins: receiverCoins
+      senderCoins.sort((a, b) => a.denom > b.denom)
+
+      const inputs = [{
+        address: from,
+        coins: senderCoins
+      }]
+      const outputs = recipients.map(({ to, tokens, bnbs }) => {
+        const receiverCoins = []
+        if (asset && tokens) {
+          receiverCoins.push({
+            denom: asset,
+            amount: new BN(tokens).multipliedBy(10 ** 8).toNumber()
+          })
+        }
+        if (bnbs) {
+          receiverCoins.push({
+            denom: BNB_ASSET,
+            amount: new BN(bnbs).multipliedBy(10 ** 8).toNumber()
+          })
+        }
+        receiverCoins.sort((a, b) => a.denom > b.denom)
+        return {
+          address: to,
+          coins: receiverCoins
+        }
+      })
+
+      msg = {
+        inputs: inputs.map((x) => ({
+          ...x,
+          address: crypto.decodeAddress(x.address)
+        })),
+        outputs: outputs.map((x) => ({
+          ...x,
+          address: crypto.decodeAddress(x.address)
+        })),
+        msgType: 'MsgSend'
       }
-    })
 
-    const msg = {
-      inputs: inputs.map((x) => ({
-        ...x,
-        address: crypto.decodeAddress(x.address)
-      })),
-      outputs: outputs.map((x) => ({
-        ...x,
-        address: crypto.decodeAddress(x.address)
-      })),
-      msgType: 'MsgSend'
-    }
-
-    this.signMsg = {
-      inputs,
-      outputs
+      this.signMsg = {
+        inputs,
+        outputs
+      }
     }
 
     this.tx = new TransactionBnc({
@@ -109,6 +123,7 @@ class Transaction {
       sequence: this.tx.sequence
     }]
     return this.tx.serialize()
+      .replace(/ce6dc043/, 'bea6e301') // until 'SetAccountFlagsMsg' is not available
   }
 }
 

From ec9c8e10c2e82777bf278dd26452ba36bfc0026d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 13:30:23 +0300
Subject: [PATCH 095/129] Tests coverage for closing bridge

---
 tests/run.sh                        |  5 +++
 tests/test/addValidator.js          | 58 +++++++++++++++++++++++------
 tests/test/changeThreshold.js       | 37 +++++++++---------
 tests/test/index.js                 | 13 ++++++-
 tests/test/removeValidator.js       | 27 ++++++++------
 tests/test/utils/proxyController.js |  3 ++
 6 files changed, 101 insertions(+), 42 deletions(-)

diff --git a/tests/run.sh b/tests/run.sh
index 7889847..c0ca1b2 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -22,3 +22,8 @@ docker start -a tests || true
 
 echo "Saving test results"
 docker cp "tests:/tests/results.xml" "./tests/results.xml" > /dev/null 2>&1 || true
+
+echo "Killing all remaining docker containers"
+docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker kill ganache_home ganache_side > /dev/null 2>&1 || true
+docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index cad94c5..c947d1d 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -17,27 +17,32 @@ module.exports = (newValidator) => {
       nextValidators = [...initialInfo.validators, newValidator]
     })
 
-    it('should start voting process', async function () {
+    it('should start closing epoch process', async function () {
       await controller1.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller3.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'closing_epoch')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
 
       await controller3.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after duplicate vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.bridgeStatus, 'closing_epoch', 'Should not do anything after duplicate vote')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
     })
 
+    it('should finish close epoch process and start voting process', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
+    })
+
     it('should add validator', async function () {
       await controller1.voteAddValidator(newValidator)
       await delay(5000)
@@ -58,12 +63,43 @@ module.exports = (newValidator) => {
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after duplicate vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
     })
 
+    it('should change close epoch', async function () {
+      await controller1.voteChangeCloseEpoch(false)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
+      assert.strictEqual(info.closeEpoch, true, 'Current close epoch is not set correctly')
+      assert.strictEqual(info.nextCloseEpoch, true, 'Next close epoch is not set correctly')
+
+      await controller3.voteChangeCloseEpoch(false)
+      info = await waitPromise(
+        controller1.getInfo,
+        (newInfo) => !newInfo.nextCloseEpoch
+      )
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Next validators are not set correctly')
+      assert.strictEqual(info.closeEpoch, true, 'Current close epoch is not set correctly')
+
+      await controller3.voteChangeCloseEpoch(false)
+      await delay(5000)
+      info = await controller1.getInfo()
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after duplicate vote')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
+      assert.strictEqual(info.closeEpoch, true, 'Current close epoch is not set correctly')
+      assert.strictEqual(info.nextCloseEpoch, false, 'Next close epoch is not set correctly')
+    })
+
     it('should start keygen process', async function () {
       await controller1.voteStartKeygen()
       await delay(5000)
@@ -77,8 +113,8 @@ module.exports = (newValidator) => {
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after duplicate vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
     })
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index 754e7d5..1f6ee8b 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -22,17 +22,18 @@ module.exports = (newThreshold) => {
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller2.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'closingEpoch' || newInfo.bridgeStatus === 'voting')
+      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not started closing epoch after previous epoch')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
 
       await controller3.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
     })
 
@@ -43,8 +44,8 @@ module.exports = (newThreshold) => {
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not change state after one vote')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
-      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
-      assert.deepStrictEqual(info.nextThreshold, initialInfo.threshold, 'Next threshold is not set correctly')
+      assert.strictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.strictEqual(info.nextThreshold, initialInfo.threshold, 'Next threshold is not set correctly')
 
       await controller2.voteChangeThreshold(newThreshold)
       info = await waitPromise(
@@ -53,18 +54,18 @@ module.exports = (newThreshold) => {
       )
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
-      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.strictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
 
       await controller3.voteChangeThreshold(newThreshold)
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
-      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
-      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+      assert.strictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.strictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
     })
 
     it('should start keygen process', async function () {
@@ -80,12 +81,12 @@ module.exports = (newThreshold) => {
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
-      assert.deepStrictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
-      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+      assert.strictEqual(info.threshold, initialInfo.threshold, 'Threshold not set correctly')
+      assert.strictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
     })
 
     it('should finish keygen process and start funds transfer', async function () {
@@ -102,8 +103,8 @@ module.exports = (newThreshold) => {
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Incorrect set of validators in new epoch')
       assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Incorrect next epoch')
       assert.strictEqual(info.bridgeStatus, 'ready', 'Incorrect bridge state in new epoch')
-      assert.deepStrictEqual(info.threshold, newThreshold, 'Threshold not set correctly')
-      assert.deepStrictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
+      assert.strictEqual(info.threshold, newThreshold, 'Threshold not set correctly')
+      assert.strictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
       await delay(5000)
       const prevBalance = await getBepBalance(initialInfo.foreignBridgeAddress)
       const newBalance = await getBepBalance(info.foreignBridgeAddress)
diff --git a/tests/test/index.js b/tests/test/index.js
index 7b7da2e..aa85b05 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -36,7 +36,7 @@ describe('bridge tests', function () {
       bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY, 'bnc')
 
       const bnbBalance = await bncPrefundedUser.getBnbBalance()
-      assert.ok(bnbBalance >= 1, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 1 BNB, got ${bnbBalance}`)
+      assert.ok(bnbBalance >= 10, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 10 BNB, got ${bnbBalance}`)
       const bepBalance = await bncPrefundedUser.getBepBalance()
       assert.ok(bepBalance >= 2000, `Insufficient BEP2 balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 2000 ${FOREIGN_ASSET}, got ${bepBalance}`)
 
@@ -63,8 +63,17 @@ describe('bridge tests', function () {
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.epoch === 1)
     })
 
+    it('should start correct epoch', async function () {
+      assert.deepStrictEqual(info.validators, validatorsConfig, 'Validators are not set correctly')
+      assert.deepStrictEqual(info.nextValidators, validatorsConfig, 'Next validators are not set correctly')
+      assert.strictEqual(info.closeEpoch, true, 'Current close epoch is not set correctly')
+      assert.strictEqual(info.nextCloseEpoch, true, 'Next close epoch is not set correctly')
+      assert.strictEqual(info.threshold, 2, 'Threshold not set correctly')
+      assert.strictEqual(info.nextThreshold, 2, 'Next threshold is not set correctly')
+    })
+
     after(async function () {
-      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 1000, 0.1)
+      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 1000, 5)
       await ethPrefundedUser.transferErc(HOME_BRIDGE_ADDRESS, 1000)
     })
   })
diff --git a/tests/test/removeValidator.js b/tests/test/removeValidator.js
index b50fe83..1918346 100644
--- a/tests/test/removeValidator.js
+++ b/tests/test/removeValidator.js
@@ -17,27 +17,32 @@ module.exports = (oldValidator) => {
       nextValidators = initialInfo.validators.filter((validator) => validator !== oldValidator)
     })
 
-    it('should start voting process', async function () {
+    it('should start closing epoch process', async function () {
       await controller1.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
       await controller2.voteStartVoting()
-      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'closing_epoch')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Next validators are not set correctly')
 
       await controller3.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
-      assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.bridgeStatus, 'closing_epoch', 'Should not do anything after third vote')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
     })
 
+    it('should finish close epoch process and start voting process', async function () {
+      this.timeout(120000)
+      info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
+    })
+
     it('should remove validator', async function () {
       await controller1.voteRemoveValidator(oldValidator)
       await delay(5000)
@@ -58,8 +63,8 @@ module.exports = (oldValidator) => {
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'voting', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
     })
@@ -77,8 +82,8 @@ module.exports = (oldValidator) => {
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'keygen', 'Should not do anything after third vote')
-      assert.deepStrictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
-      assert.deepStrictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
+      assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
+      assert.strictEqual(info.nextEpoch, initialInfo.epoch + 1, 'Next epoch is not set correctly')
       assert.deepStrictEqual(info.validators, initialInfo.validators, 'Validators are not set correctly')
       assert.deepStrictEqual(info.nextValidators, nextValidators, 'Incorrect set of next validators after third vote')
     })
diff --git a/tests/test/utils/proxyController.js b/tests/test/utils/proxyController.js
index 3dac478..db028c8 100644
--- a/tests/test/utils/proxyController.js
+++ b/tests/test/utils/proxyController.js
@@ -28,6 +28,9 @@ function createController(validatorId) {
     },
     async voteChangeThreshold(threshold) {
       return (await retry(() => proxy.get(`/vote/changeThreshold/${threshold}`))).data
+    },
+    async voteChangeCloseEpoch(closeEpoch) {
+      return (await retry(() => proxy.get(`/vote/changeCloseEpoch/${closeEpoch}`))).data
     }
   }
 }

From fee494e67750b0b063ba71ddc0d715ffb3fa9e9c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 13:30:55 +0300
Subject: [PATCH 096/129] Fixed bep12 testnet height

---
 src/binance-testnet/Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/binance-testnet/Dockerfile b/src/binance-testnet/Dockerfile
index fa8a813..10a9e73 100644
--- a/src/binance-testnet/Dockerfile
+++ b/src/binance-testnet/Dockerfile
@@ -15,4 +15,5 @@ RUN git lfs pull -I cli/testnet/${BNC_VERSION}/linux
 RUN ./fullnode/testnet/${BNC_VERSION}/linux/bnbchaind testnet --acc-prefix tbnb --chain-id Binance-Dev --v 1
 
 RUN sed -i "s/publishTransfer = false/publishTransfer = true/" ./mytestnet/node0/gaiad/config/app.toml && \
-    sed -i "s/publishLocal = false/publishLocal = true/" ./mytestnet/node0/gaiad/config/app.toml
+    sed -i "s/publishLocal = false/publishLocal = true/" ./mytestnet/node0/gaiad/config/app.toml && \
+    sed -i "s/BEP12Height = 9223372036854775807/BEP12Height = 1/" ./mytestnet/node0/gaiad/config/app.toml

From e04ddb94ca8930bb3d2d7d54668e3dafd05fd051 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 16:45:04 +0300
Subject: [PATCH 097/129] Added additional checks for bnc account flags

---
 tests/test/addValidator.js        | 4 +++-
 tests/test/changeThreshold.js     | 4 +++-
 tests/test/removeValidator.js     | 4 +++-
 tests/test/utils/bncController.js | 4 ++++
 4 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index c947d1d..e0423dc 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBepBalance } = require('./utils/bncController')
+const { getBepBalance, getBncFlags } = require('./utils/bncController')
 
 const { controller1, controller3 } = require('./utils/proxyController')
 
@@ -41,6 +41,8 @@ module.exports = (newValidator) => {
     it('should finish close epoch process and start voting process', async function () {
       this.timeout(120000)
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
+      const flags = await getBncFlags(initialInfo.foreignBridgeAddress)
+      assert.strictEqual(flags, 1, 'Foreign bridge flags are not set correctly')
     })
 
     it('should add validator', async function () {
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index 1f6ee8b..fc0f357 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBepBalance } = require('./utils/bncController')
+const { getBepBalance, getBncFlags } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
@@ -92,6 +92,8 @@ module.exports = (newThreshold) => {
     it('should finish keygen process and start funds transfer', async function () {
       this.timeout(120000)
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'funds_transfer')
+      const flags = await getBncFlags(initialInfo.foreignBridgeAddress)
+      assert.strictEqual(flags, 0, 'Foreign bridge flags are not set correctly')
     })
 
     it('should transfer all funds to new account and start new epoch', async function () {
diff --git a/tests/test/removeValidator.js b/tests/test/removeValidator.js
index 1918346..befcede 100644
--- a/tests/test/removeValidator.js
+++ b/tests/test/removeValidator.js
@@ -1,7 +1,7 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBepBalance } = require('./utils/bncController')
+const { getBepBalance, getBncFlags } = require('./utils/bncController')
 
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
 
@@ -41,6 +41,8 @@ module.exports = (oldValidator) => {
     it('should finish close epoch process and start voting process', async function () {
       this.timeout(120000)
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
+      const flags = await getBncFlags(initialInfo.foreignBridgeAddress)
+      assert.strictEqual(flags, 1, 'Foreign bridge flags are not set correctly')
     })
 
     it('should remove validator', async function () {
diff --git a/tests/test/utils/bncController.js b/tests/test/utils/bncController.js
index bb2ca86..93237d7 100644
--- a/tests/test/utils/bncController.js
+++ b/tests/test/utils/bncController.js
@@ -23,5 +23,9 @@ module.exports = {
   async getBncSequence(address) {
     const response = await retry(() => bnc.get(`/api/v1/account/${address}/sequence`))
     return response ? response.data.sequence : 0
+  },
+  async getBncFlags(address) {
+    const response = await retry(() => bnc.get(`/api/v1/account/${address}`))
+    return response.data.flags
   }
 }

From 74089e9f5cdcd64c3e1d5549a6f99e93a0697847 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 16:55:57 +0300
Subject: [PATCH 098/129] Accept only empty nonce for memo validation script to
 work as a blocking script

---
 src/oracle/bncWatcher/bncWatcher.js              | 6 ++----
 src/test-services/binanceSend/testBinanceSend.js | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 159156c..2393e17 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -156,13 +156,11 @@ async function loop() {
 
   for (let i = transactions.length - 1; i >= 0; i -= 1) {
     const tx = transactions[i]
-    if (tx.memo !== 'funding') {
+    if (tx.memo === '') {
       const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
       await proxyHttpClient.post('/transfer', {
         to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
-        value: new BN(tx.value)
-          .multipliedBy(10 ** 18)
-          .integerValue(),
+        value: new BN(tx.value).multipliedBy(10 ** 18).integerValue(),
         hash: `0x${tx.txHash}`
       })
     }
diff --git a/src/test-services/binanceSend/testBinanceSend.js b/src/test-services/binanceSend/testBinanceSend.js
index f0aede3..9dfaee7 100644
--- a/src/test-services/binanceSend/testBinanceSend.js
+++ b/src/test-services/binanceSend/testBinanceSend.js
@@ -40,7 +40,7 @@ async function main() {
     receipt = await client.multiSend(from, outputs, 'funding')
   } else {
     console.log(`From ${from} to ${to}, ${tokens} ${FOREIGN_ASSET}'`)
-    receipt = await client.transfer(from, to, tokens, FOREIGN_ASSET, 'exchange')
+    receipt = await client.transfer(from, to, tokens, FOREIGN_ASSET, '')
   }
 
   if (receipt.status === 200) {

From 6665e0e0a537c111d44bf13a48c10e415faf94ef Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 17:18:56 +0300
Subject: [PATCH 099/129] Added tests for forced sign

---
 tests/test/addValidator.js | 22 ++++++++++++++++++++--
 tests/test/index.js        |  2 +-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index e0423dc..61d89ea 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -1,23 +1,31 @@
 const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
-const { getBepBalance, getBncFlags } = require('./utils/bncController')
+const { getBepBalance, getBncFlags, getBncSequence } = require('./utils/bncController')
 
 const { controller1, controller3 } = require('./utils/proxyController')
 
-module.exports = (newValidator) => {
+module.exports = (getUsers, newValidator) => {
   describe('add validator', function () {
     let info
     let initialInfo
     let nextValidators
+    let user
+    let bncBridgeSequence
+    let bncBalance
 
     before(async function () {
       initialInfo = await controller1.getInfo()
+      // eslint-disable-next-line prefer-destructuring
+      user = getUsers()[0]
+      bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
+      bncBalance = await user.getBepBalance()
       info = initialInfo
       nextValidators = [...initialInfo.validators, newValidator]
     })
 
     it('should start closing epoch process', async function () {
+      await user.exchangeErc(5)
       await controller1.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
@@ -38,6 +46,16 @@ module.exports = (newValidator) => {
       assert.deepStrictEqual(info.nextValidators, initialInfo.validators, 'Incorrect set of next validators after third vote')
     })
 
+    it('should make forced sign', async function () {
+      this.timeout(300000)
+      await waitPromise(
+        () => getBncSequence(info.foreignBridgeAddress),
+        (sequence) => sequence === bncBridgeSequence + 1
+      )
+      const newBncBalance = await user.getBepBalance()
+      assert.strictEqual(newBncBalance, bncBalance + 5, `Balance of ${user.bncAddress} did not updated as expected`)
+    })
+
     it('should finish close epoch process and start voting process', async function () {
       this.timeout(120000)
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'voting')
diff --git a/tests/test/index.js b/tests/test/index.js
index aa85b05..3acb9bb 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -88,7 +88,7 @@ describe('bridge tests', function () {
   testBncToEth(() => users)
   testEthToBnc(() => users)
 
-  testAddValidator(validatorsConfig[1])
+  testAddValidator(() => users, validatorsConfig[1])
 
   testEthToBnc(() => users)
   testBncToEth(() => users)

From 17cb9e760d1593685a13413c17fe63a9e4e9bfa7 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 17:44:08 +0300
Subject: [PATCH 100/129] Waiting for funds on bnc side, if not enough for
 making exchange transaction

---
 src/oracle/tss-sign/signer.js | 32 ++++++++++++++++-----------
 tests/test/ethToBnc.js        | 41 ++++++++++++++++++++++++-----------
 tests/test/index.js           |  4 ++--
 tests/test/utils/bncClient.js |  2 +-
 4 files changed, 50 insertions(+), 29 deletions(-)

diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 69181da..39d77b4 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -116,23 +116,29 @@ async function waitForAccountNonce(address, nonce) {
   return !cancelled
 }
 
-
-function sendTx(tx) {
-  return httpClient
-    .post('/api/v1/broadcast?sync=true', tx, {
-      headers: {
-        'Content-Type': 'text/plain'
-      }
-    })
-    .catch(async (err) => {
+async function sendTx(tx) {
+  while (true) {
+    try {
+      return await httpClient
+        .post('/api/v1/broadcast?sync=true', tx, {
+          headers: {
+            'Content-Type': 'text/plain'
+          }
+        })
+    } catch (err) {
       if (err.response.data.message.includes('Tx already exists in cache')) {
         logger.debug('Tx already exists in cache')
         return true
       }
-      logger.info('Something failed, restarting: %o', err.response)
-      await delay(1000)
-      return await sendTx(tx)
-    })
+      if (err.response.data.message.includes(' < ')) {
+        logger.warn('Insufficient funds, waiting for funds to income')
+        await delay(60000)
+      } else {
+        logger.info('Something failed, restarting: %o', err.response)
+        await delay(10000)
+      }
+    }
+  }
 }
 
 function sign(keysFile, hash, tx, publicKey, signerAddress) {
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 4bd5e08..4ae6ef6 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -7,45 +7,60 @@ const { HOME_BRIDGE_ADDRESS } = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
-module.exports = (getUsers) => {
+module.exports = (getUsers, amount = 5, getBncPrefundedUser = null) => {
   describe('exchange of tokens in eth => bnc direction', function () {
     let info
     let users
     let ethBalances
     let bncBalances
     let bncBridgeSequence
+    let bncPrefundedUser
 
     before(async function () {
       users = getUsers()
       info = await controller1.getInfo()
       ethBalances = await Promise.all(users.map((user) => user.getErcBalance()))
       bncBalances = await seqMap(users, (user) => user.getBepBalance())
-
+      if (getBncPrefundedUser) {
+        bncPrefundedUser = getBncPrefundedUser()
+      }
       bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
-      await Promise.all(users.map((user, i) => user.approveErc(HOME_BRIDGE_ADDRESS, 5 + i)))
+      await Promise.all(users.map((user, i) => user.approveErc(HOME_BRIDGE_ADDRESS, amount + i)))
     })
 
     it('should accept exchange requests', async function () {
-      await Promise.all(users.map((user, i) => user.exchangeErc(5 + i)))
+      await Promise.all(users.map((user, i) => user.exchangeErc(amount + i)))
       const newEthBalances = await Promise.all(users.map((user) => user.getErcBalance()))
       for (let i = 0; i < 3; i += 1) {
-        assert.strictEqual(newEthBalances[i], ethBalances[i] - 5 - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
+        assert.strictEqual(newEthBalances[i], ethBalances[i] - amount - i, `Balance of ${users[i].ethAddress} did not updated as expected`)
       }
     })
 
-    it('should make exchange transaction on bnc side', async function () {
-      this.timeout(300000)
-      await waitPromise(
-        () => getBncSequence(info.foreignBridgeAddress),
-        (sequence) => sequence === bncBridgeSequence + 1
-      )
-    })
+    if (bncPrefundedUser) {
+      it('should make exchange transaction on bnc side with waiting for enough funds on bnc side', async function () {
+        this.timeout(300000)
+        await delay(120000)
+        await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, amount * 3 + 10, 0)
+        await waitPromise(
+          () => getBncSequence(info.foreignBridgeAddress),
+          (sequence) => sequence === bncBridgeSequence + 1
+        )
+      })
+    } else {
+      it('should make exchange transaction on bnc side', async function () {
+        this.timeout(300000)
+        await waitPromise(
+          () => getBncSequence(info.foreignBridgeAddress),
+          (sequence) => sequence === bncBridgeSequence + 1
+        )
+      })
+    }
 
     it('should make correct exchange transaction', async function () {
       await delay(10000)
       const newBncBalances = await Promise.all(users.map((user) => user.getBepBalance()))
       for (let i = 0; i < 3; i += 1) {
-        assert.strictEqual(newBncBalances[i], bncBalances[i] + 5 + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
+        assert.strictEqual(newBncBalances[i], bncBalances[i] + amount + i, `Balance of ${users[i].bncAddress} did not updated as expected`)
       }
     })
   })
diff --git a/tests/test/index.js b/tests/test/index.js
index 3acb9bb..8ae7840 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -21,6 +21,7 @@ const { controller1 } = require('./utils/proxyController')
 
 describe('bridge tests', function () {
   let users
+  let bncPrefundedUser
 
   before(async function () {
     users = await seqMap(usersConfig, (user) => createUser(user.privateKey))
@@ -29,7 +30,6 @@ describe('bridge tests', function () {
   describe('generation of initial epoch keys', function () {
     let info
     let ethPrefundedUser
-    let bncPrefundedUser
 
     before(async function () {
       ethPrefundedUser = await createUser(HOME_PRIVATE_KEY, 'eth')
@@ -99,5 +99,5 @@ describe('bridge tests', function () {
   testEthToBnc(() => users)
   testBncToEth(() => users)
   testEthToBncWithRestart(() => users, 2)
-  testEthToBnc(() => users)
+  testEthToBnc(() => users, 500, bncPrefundedUser)
 })
diff --git a/tests/test/utils/bncClient.js b/tests/test/utils/bncClient.js
index cd461fb..bd18a30 100644
--- a/tests/test/utils/bncClient.js
+++ b/tests/test/utils/bncClient.js
@@ -36,7 +36,7 @@ module.exports = async function main(privateKey) {
       await client.multiSend(from, outputs, 'funding')
     },
     async exchange(to, value) {
-      await client.transfer(from, to, value.toString(), FOREIGN_ASSET, 'exchange')
+      await client.transfer(from, to, value.toString(), FOREIGN_ASSET, '')
     }
   }
 }

From 73f7dc161230440f886e4b2a578cbabdffb981f8 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 21:48:32 +0300
Subject: [PATCH 101/129] Fixed waiting for funds in sendTx, fixed
 correspondent tests.

---
 .circleci/config.yml                    | 10 +++++++++-
 src/binance-testnet/http-api/index.js   | 20 +++++++++++++++++++-
 src/deploy/deploy-home/.env.development |  2 +-
 src/oracle/tss-sign/signer.js           | 14 +++++++-------
 tests/init.sh                           |  2 +-
 tests/test/addValidator.js              |  4 ++--
 tests/test/ethToBnc.js                  |  4 ++--
 tests/test/index.js                     |  6 +++---
 8 files changed, 44 insertions(+), 18 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index a1e6183..f79f9c3 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -125,6 +125,14 @@ orbs:
                 docker logs ganache_home > ./artifacts/logs/ganache/home.log
                 docker logs ganache_side > ./artifacts/logs/ganache/side.log
               when: always
+          - run:
+              name: "Save binance logs"
+              command: |
+                mkdir -p ./artifacts/logs/binance
+                docker logs binance-testnet_node_1 > ./artifacts/logs/binance/node.log
+                docker logs binance-testnet_api-server_1 > ./artifacts/logs/binance/api-server.log
+                docker logs binance-testnet_http-api_1 > ./artifacts/logs/binance/http-api.log
+              when: always
           - store_artifacts:
               path: ./artifacts
               when: always
@@ -151,7 +159,7 @@ jobs:
           name: "Run dev environment, deploy contracts, prefund accounts"
           command: |
             BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
-            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
+            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 1000
       - run:
           name: "Stop dev environment"
           command: docker kill ganache_side ganache_home
diff --git a/src/binance-testnet/http-api/index.js b/src/binance-testnet/http-api/index.js
index 58d52aa..60feabb 100644
--- a/src/binance-testnet/http-api/index.js
+++ b/src/binance-testnet/http-api/index.js
@@ -126,7 +126,25 @@ async function handleBroadcast(req, res) {
         tx: `0x${req.rawBody}`
       }
     })
-    res.send([response.data.result])
+    if (response.data.error) {
+      res.status(500).send({
+        code: 500,
+        failed_tx_index: 0,
+        message: 'RPC error -32603 - Internal error: Tx already exists in cache',
+        success_tx_results: []
+      })
+    } else if (response.data.result.code === 65546) {
+      res.status(400).send({
+        code: 400,
+        failed_tx_index: 0,
+        message: '3417218964BNB < 1000DEV-BA6',
+        success_tx_results: []
+      })
+    } else if (response.data.result) {
+      res.send([response.data.result])
+    } else {
+      res.status(400).end()
+    }
   }
 }
 
diff --git a/src/deploy/deploy-home/.env.development b/src/deploy/deploy-home/.env.development
index 7c3f528..b13d306 100644
--- a/src/deploy/deploy-home/.env.development
+++ b/src/deploy/deploy-home/.env.development
@@ -12,7 +12,7 @@ VALIDATOR_ADDRESS_3=0x6352e3e6038e05b9da00c84ae851308f9774f883
 THRESHOLD=2
 
 MIN_TX_LIMIT=10000000000000000
-MAX_TX_LIMIT=100000000000000000000
+MAX_TX_LIMIT=1000000000000000000000
 
 BLOCKS_RANGE_SIZE=10
 
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 39d77b4..0e3810d 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -119,19 +119,19 @@ async function waitForAccountNonce(address, nonce) {
 async function sendTx(tx) {
   while (true) {
     try {
-      return await httpClient
-        .post('/api/v1/broadcast?sync=true', tx, {
-          headers: {
-            'Content-Type': 'text/plain'
-          }
-        })
+      return await httpClient.post('/api/v1/broadcast?sync=true', tx, {
+        headers: {
+          'Content-Type': 'text/plain'
+        }
+      })
     } catch (err) {
+      logger.trace('Error, response data %o', err.response.data)
       if (err.response.data.message.includes('Tx already exists in cache')) {
         logger.debug('Tx already exists in cache')
         return true
       }
       if (err.response.data.message.includes(' < ')) {
-        logger.warn('Insufficient funds, waiting for funds to income')
+        logger.warn('Insufficient funds, waiting for funds')
         await delay(60000)
       } else {
         logger.info('Something failed, restarting: %o', err.response)
diff --git a/tests/init.sh b/tests/init.sh
index b94a291..d542a16 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -22,7 +22,7 @@ echo "Starting binance test network"
 ./demo/start-binance-environment.sh
 
 echo "Prefunding ethereum user accounts"
-cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 300
+cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 1000
 echo "Prefunding binance user accounts"
 cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
 
diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index 61d89ea..da0c1d0 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -18,10 +18,10 @@ module.exports = (getUsers, newValidator) => {
       initialInfo = await controller1.getInfo()
       // eslint-disable-next-line prefer-destructuring
       user = getUsers()[0]
-      bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
       bncBalance = await user.getBepBalance()
       info = initialInfo
-      nextValidators = [...initialInfo.validators, newValidator]
+      bncBridgeSequence = await getBncSequence(info.foreignBridgeAddress)
+      nextValidators = [...info.validators, newValidator]
     })
 
     it('should start closing epoch process', async function () {
diff --git a/tests/test/ethToBnc.js b/tests/test/ethToBnc.js
index 4ae6ef6..c01a5dc 100644
--- a/tests/test/ethToBnc.js
+++ b/tests/test/ethToBnc.js
@@ -36,8 +36,8 @@ module.exports = (getUsers, amount = 5, getBncPrefundedUser = null) => {
       }
     })
 
-    if (bncPrefundedUser) {
-      it('should make exchange transaction on bnc side with waiting for enough funds on bnc side', async function () {
+    if (getBncPrefundedUser) {
+      it('should make exchange transaction on bnc side after already enough funds', async function () {
         this.timeout(300000)
         await delay(120000)
         await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, amount * 3 + 10, 0)
diff --git a/tests/test/index.js b/tests/test/index.js
index 8ae7840..a120c7c 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -50,7 +50,7 @@ describe('bridge tests', function () {
         const userEthBalance = await users[i].getEthBalance()
         assert.ok(userEthBalance >= 0.1, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.1 ETH, got ${userEthBalance}`)
         const userErcBalance = await users[i].getErcBalance()
-        assert.ok(userErcBalance >= 200, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 200 ERC20, got ${userErcBalance}`)
+        assert.ok(userErcBalance >= 1000, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 1000 ERC20, got ${userErcBalance}`)
         const userBnbBalance = await users[i].getBepBalance()
         assert.ok(userBnbBalance >= 0.1, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.1 BNB, got ${userBnbBalance}`)
         const userBepBalance = await users[i].getBepBalance()
@@ -84,7 +84,7 @@ describe('bridge tests', function () {
 
   testRemoveValidator(validatorsConfig[1])
 
-  testEthToBnc(() => users)
+  testEthToBnc(() => users, 500, () => bncPrefundedUser)
   testBncToEth(() => users)
   testEthToBnc(() => users)
 
@@ -99,5 +99,5 @@ describe('bridge tests', function () {
   testEthToBnc(() => users)
   testBncToEth(() => users)
   testEthToBncWithRestart(() => users, 2)
-  testEthToBnc(() => users, 500, bncPrefundedUser)
+  testEthToBnc(() => users)
 })

From a84278f88cba14d1b06db13d3f6c01a271af7e6f Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 23:29:06 +0300
Subject: [PATCH 102/129] Fixed forced sign test. Improved binance testnet
 scripts

---
 demo/clean.sh                          |  3 ++
 demo/start-binance-environment.sh      | 52 ++++++++++++++++----------
 src/binance-testnet/docker-compose.yml | 10 +++--
 tests/test/addValidator.js             |  8 +++-
 4 files changed, 49 insertions(+), 24 deletions(-)

diff --git a/demo/clean.sh b/demo/clean.sh
index 1044917..3b819ba 100755
--- a/demo/clean.sh
+++ b/demo/clean.sh
@@ -12,6 +12,9 @@ echo "Cleaning $TARGET_NETWORK network"
 if [[ "$TARGET_NETWORK" == "development" ]]; then
   docker volume rm ganache_side_data > /dev/null 2>&1 || true
   docker volume rm ganache_home_data > /dev/null 2>&1 || true
+  docker volume rm binance_data > /dev/null 2>&1 || true
+  docker volume rm binance_marketdata > /dev/null 2>&1 || true
+  docker volume rm binance_marketdata > /dev/null 2>&1 || true
 fi
 
 for (( I = 1; I < 4; ++I )); do
diff --git a/demo/start-binance-environment.sh b/demo/start-binance-environment.sh
index 86ca927..783b179 100755
--- a/demo/start-binance-environment.sh
+++ b/demo/start-binance-environment.sh
@@ -8,12 +8,22 @@ tbnbcli() {
     echo 12345678 | docker exec -i binance-testnet_node_1 ./tbnbcli $@ --from node0 --node http://node:26657 --chain-id Binance-Dev --json
 }
 
-echo "Removing old environment"
-docker kill $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker volume rm binance-testnet_marketdata > /dev/null 2>&1 || true
+if [[ "$(docker volume ls | grep binance_data)" ]]; then
+    echo "Restarting binance test network"
+else
+    echo "Creating new binance test network"
 
-docker network create binance_net > /dev/null 2>&1 || true
+    echo "Removing old environment"
+    docker kill $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+    docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+    docker volume rm binance_marketdata > /dev/null 2>&1 || true
+
+    docker network create binance_net > /dev/null 2>&1 || true
+    docker volume create binance_marketdata > /dev/null 2>&1 || true
+    docker volume create binance_data > /dev/null 2>&1 || true
+
+    need_to_deploy=true
+fi
 
 echo "Building required binaries"
 docker build -t testnet-binaries ../src/binance-testnet > /dev/null 2>&1 || true
@@ -23,21 +33,25 @@ docker-compose -f ../src/binance-testnet/docker-compose.yml up --build -d
 
 sleep 2
 
-echo "Issuing test asset"
-ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --token-name "DEV Token" | jq .Response.log)
-TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
-echo "Issued $TOKEN_SYMBOL"
+if [[ -n "$need_to_deploy" ]]; then
+    echo "Issuing test asset"
+    ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --token-name "DEV Token" | jq .Response.log)
+    TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
+    echo "Issued $TOKEN_SYMBOL"
 
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceBalance/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceSend/.env.development
-sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../tests/.env
-for file in ./validator*/.env.development; do
-    sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' "$file"
-done
+    sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceBalance/.env.development
+    sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceSend/.env.development
+    sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../tests/.env
+    for file in ./validator*/.env.development; do
+        sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' "$file"
+    done
 
-sleep 2
+    sleep 2
 
-echo "Sending tokens to controlled address"
-tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
+    echo "Sending tokens to controlled address"
+    tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
 
-sleep 2
\ No newline at end of file
+    sleep 2
+else
+    echo "Tokens are already issued, run clean.sh first if you want to redeploy everything"
+fi
diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
index f4917b5..ebe2cff 100644
--- a/src/binance-testnet/docker-compose.yml
+++ b/src/binance-testnet/docker-compose.yml
@@ -8,7 +8,8 @@ services:
     ports:
       - '26657:26657'
     volumes:
-      - 'marketdata:/root/.bnbchaind/marketdata'
+      - 'binance_marketdata:/root/.bnbchaind/marketdata'
+      - 'binance_data:/root/.bnbchaind/data'
   api-server:
     build: api-server
     image: bnc-api-server
@@ -28,10 +29,13 @@ services:
     ports:
       - '8000:8000'
     volumes:
-      - 'marketdata:/http-api/marketdata'
+      - 'binance_marketdata:/http-api/marketdata'
 networks:
   binance_net:
     external: true
   binance_rpc_net:
 volumes:
-  marketdata:
+  binance_marketdata:
+    external: true
+  binance_data:
+    external: true
diff --git a/tests/test/addValidator.js b/tests/test/addValidator.js
index da0c1d0..f30bb53 100644
--- a/tests/test/addValidator.js
+++ b/tests/test/addValidator.js
@@ -5,6 +5,8 @@ const { getBepBalance, getBncFlags, getBncSequence } = require('./utils/bncContr
 
 const { controller1, controller3 } = require('./utils/proxyController')
 
+const { HOME_BRIDGE_ADDRESS } = process.env
+
 module.exports = (getUsers, newValidator) => {
   describe('add validator', function () {
     let info
@@ -25,12 +27,14 @@ module.exports = (getUsers, newValidator) => {
     })
 
     it('should start closing epoch process', async function () {
-      await user.exchangeErc(5)
       await controller1.voteStartVoting()
       await delay(5000)
       info = await controller1.getInfo()
       assert.strictEqual(info.bridgeStatus, 'ready', 'Should not change state after one vote')
 
+      await user.approveErc(HOME_BRIDGE_ADDRESS, 5)
+      await user.exchangeErc(5)
+
       await controller3.voteStartVoting()
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'closing_epoch')
       assert.strictEqual(info.epoch, initialInfo.epoch, 'Current epoch is not set correctly')
@@ -157,7 +161,7 @@ module.exports = (getUsers, newValidator) => {
       const prevBalance = await getBepBalance(initialInfo.foreignBridgeAddress)
       const newBalance = await getBepBalance(info.foreignBridgeAddress)
       assert.strictEqual(prevBalance, 0, 'Did not transfer all funds')
-      assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens, 'Funds are lost somewhere')
+      assert.strictEqual(newBalance, initialInfo.foreignBalanceTokens - 5, 'Funds are lost somewhere')
     })
   })
 }

From 3fa391cef51c634ce07c00a67f78684d831a4209 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 14 Nov 2019 23:44:47 +0300
Subject: [PATCH 103/129] Fixed docker rm commands

---
 demo/clean.sh | 8 +++++++-
 tests/init.sh | 4 ++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/demo/clean.sh b/demo/clean.sh
index 3b819ba..0b5586d 100755
--- a/demo/clean.sh
+++ b/demo/clean.sh
@@ -9,12 +9,18 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 
 echo "Cleaning $TARGET_NETWORK network"
 
+docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker kill ganache_home ganache_side > /dev/null 2>&1 || true
+docker rm ganache_home ganache_side > /dev/null 2>&1 || true
+docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+
 if [[ "$TARGET_NETWORK" == "development" ]]; then
   docker volume rm ganache_side_data > /dev/null 2>&1 || true
   docker volume rm ganache_home_data > /dev/null 2>&1 || true
   docker volume rm binance_data > /dev/null 2>&1 || true
   docker volume rm binance_marketdata > /dev/null 2>&1 || true
-  docker volume rm binance_marketdata > /dev/null 2>&1 || true
 fi
 
 for (( I = 1; I < 4; ++I )); do
diff --git a/tests/init.sh b/tests/init.sh
index d542a16..62d3a64 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -4,11 +4,11 @@ set -e
 
 echo "Killing all remaining docker containers"
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker rm $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
 docker kill ganache_home ganache_side > /dev/null 2>&1 || true
 docker rm ganache_home ganache_side > /dev/null 2>&1 || true
 docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker rm $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
 
 echo "Cleaning previous demo environment"
 ./demo/clean.sh

From c953c8c21b4590b532a4e6562ee2d0a25a3fe0b0 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 15 Nov 2019 10:01:41 +0300
Subject: [PATCH 104/129] Optimized a little bit dockerfiles for deploying

---
 src/deploy/deploy-home/Dockerfile | 3 +--
 src/deploy/deploy-side/Dockerfile | 3 +--
 src/deploy/deploy-test/Dockerfile | 3 +--
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/deploy/deploy-home/Dockerfile b/src/deploy/deploy-home/Dockerfile
index cbdf66a..a769574 100644
--- a/src/deploy/deploy-home/Dockerfile
+++ b/src/deploy/deploy-home/Dockerfile
@@ -9,8 +9,6 @@ RUN npm install truffle-hdwallet-provider
 
 RUN truffle obtain --solc 0.5.9
 
-COPY truffle-config-build.js /build/truffle-config.js
-
 RUN mkdir temp \
  && cd temp \
  && truffle init \
@@ -19,6 +17,7 @@ RUN mkdir temp \
  && cd .. \
  && rm -rf temp
 
+COPY truffle-config-build.js /build/truffle-config.js
 COPY contracts/openzeppelin-solidity /build/contracts/openzeppelin-solidity
 
 RUN truffle compile
diff --git a/src/deploy/deploy-side/Dockerfile b/src/deploy/deploy-side/Dockerfile
index c94da4c..fce9bf2 100644
--- a/src/deploy/deploy-side/Dockerfile
+++ b/src/deploy/deploy-side/Dockerfile
@@ -9,8 +9,6 @@ RUN npm install truffle-hdwallet-provider
 
 RUN truffle obtain --solc 0.5.9
 
-COPY truffle-config-build.js /build/truffle-config.js
-
 RUN mkdir temp \
  && cd temp \
  && truffle init \
@@ -19,6 +17,7 @@ RUN mkdir temp \
  && cd .. \
  && rm -rf temp
 
+COPY truffle-config-build.js /build/truffle-config.js
 COPY contracts /build/contracts
 
 RUN truffle compile
diff --git a/src/deploy/deploy-test/Dockerfile b/src/deploy/deploy-test/Dockerfile
index cbdf66a..a769574 100644
--- a/src/deploy/deploy-test/Dockerfile
+++ b/src/deploy/deploy-test/Dockerfile
@@ -9,8 +9,6 @@ RUN npm install truffle-hdwallet-provider
 
 RUN truffle obtain --solc 0.5.9
 
-COPY truffle-config-build.js /build/truffle-config.js
-
 RUN mkdir temp \
  && cd temp \
  && truffle init \
@@ -19,6 +17,7 @@ RUN mkdir temp \
  && cd .. \
  && rm -rf temp
 
+COPY truffle-config-build.js /build/truffle-config.js
 COPY contracts/openzeppelin-solidity /build/contracts/openzeppelin-solidity
 
 RUN truffle compile

From d79215073235eca8f6981f27f819096b50150d6d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 15 Nov 2019 10:02:46 +0300
Subject: [PATCH 105/129] Moved prefunding in tests before hook

---
 demo/start-binance-environment.sh |  5 ++--
 tests/init.sh                     | 13 ---------
 tests/test/index.js               | 44 +++++++++----------------------
 3 files changed, 15 insertions(+), 47 deletions(-)

diff --git a/demo/start-binance-environment.sh b/demo/start-binance-environment.sh
index 783b179..5d56c69 100755
--- a/demo/start-binance-environment.sh
+++ b/demo/start-binance-environment.sh
@@ -35,7 +35,7 @@ sleep 2
 
 if [[ -n "$need_to_deploy" ]]; then
     echo "Issuing test asset"
-    ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 1000000000000 --token-name "DEV Token" | jq .Response.log)
+    ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 10000000000000000 --token-name "DEV Token" | jq .Response.log)
     TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
     echo "Issued $TOKEN_SYMBOL"
 
@@ -49,7 +49,8 @@ if [[ -n "$need_to_deploy" ]]; then
     sleep 2
 
     echo "Sending tokens to controlled address"
-    tbnbcli token multi-send --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"1000000000000:BNB,1000000000000:'"$TOKEN_SYMBOL"'"}]'
+    tbnbcli token multi-send  \
+    --transfers '[{"to":"tbnb1z7u9f8mcuwxanns9xa6qgjtlka0d392epc0m9x","amount":"10000000000000000:BNB,10000000000000000:'"$TOKEN_SYMBOL"'"}]'
 
     sleep 2
 else
diff --git a/tests/init.sh b/tests/init.sh
index 62d3a64..0261b56 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -2,14 +2,6 @@
 
 set -e
 
-echo "Killing all remaining docker containers"
-docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker rm $(docker ps -a | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker kill ganache_home ganache_side > /dev/null 2>&1 || true
-docker rm ganache_home ganache_side > /dev/null 2>&1 || true
-docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
-
 echo "Cleaning previous demo environment"
 ./demo/clean.sh
 
@@ -21,11 +13,6 @@ BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
 echo "Starting binance test network"
 ./demo/start-binance-environment.sh
 
-echo "Prefunding ethereum user accounts"
-cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 1000
-echo "Prefunding binance user accounts"
-cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
-
 echo "Starting validator daemons"
 N=1 ./demo/validator-demo.sh -d
 N=2 ./demo/validator-demo.sh -d
diff --git a/tests/test/index.js b/tests/test/index.js
index a120c7c..b5bb877 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -13,50 +13,30 @@ const testChangeThreshold = require('./changeThreshold')
 const usersConfig = require('../config').users
 const validatorsConfig = require('../config').validators
 
-const {
-  HOME_PRIVATE_KEY, FOREIGN_PRIVATE_KEY, HOME_BRIDGE_ADDRESS, FOREIGN_ASSET
-} = process.env
+const { HOME_PRIVATE_KEY, FOREIGN_PRIVATE_KEY, HOME_BRIDGE_ADDRESS } = process.env
 
 const { controller1 } = require('./utils/proxyController')
 
 describe('bridge tests', function () {
   let users
   let bncPrefundedUser
+  let ethPrefundedUser
 
   before(async function () {
+    ethPrefundedUser = await createUser(HOME_PRIVATE_KEY, 'eth')
+    bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY, 'bnc')
+
+    for (let i = 0; i < 3; i += 1) {
+      // user eth balance is already prefunded with 100 eth in genesis block
+      await ethPrefundedUser.transferErc(usersConfig[i].ethAddress, 10000)
+      await bncPrefundedUser.transferBepBnb(usersConfig[i].bncAddress, 10000, 100)
+    }
+
     users = await seqMap(usersConfig, (user) => createUser(user.privateKey))
   })
 
   describe('generation of initial epoch keys', function () {
     let info
-    let ethPrefundedUser
-
-    before(async function () {
-      ethPrefundedUser = await createUser(HOME_PRIVATE_KEY, 'eth')
-      bncPrefundedUser = await createUser(FOREIGN_PRIVATE_KEY, 'bnc')
-
-      const bnbBalance = await bncPrefundedUser.getBnbBalance()
-      assert.ok(bnbBalance >= 10, `Insufficient BNB balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 10 BNB, got ${bnbBalance}`)
-      const bepBalance = await bncPrefundedUser.getBepBalance()
-      assert.ok(bepBalance >= 2000, `Insufficient BEP2 balance on ${bncPrefundedUser.ethAddress} in Binance network, expected 2000 ${FOREIGN_ASSET}, got ${bepBalance}`)
-
-      const ethBalance = await ethPrefundedUser.getEthBalance()
-      assert.ok(ethBalance >= 1, `Insufficient ETH balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 1 ETH, got ${ethBalance}`)
-      const ercBalance = await ethPrefundedUser.getErcBalance()
-      assert.ok(ercBalance >= 2000, `Insufficient ERC20 balance on ${ethPrefundedUser.ethAddress} in Ethereum network, expected 2000 ERC20, got ${ercBalance}`)
-
-
-      for (let i = 0; i < 3; i += 1) {
-        const userEthBalance = await users[i].getEthBalance()
-        assert.ok(userEthBalance >= 0.1, `Insufficient ETH balance on ${users[i].ethAddress} in Ethereum network, expected 0.1 ETH, got ${userEthBalance}`)
-        const userErcBalance = await users[i].getErcBalance()
-        assert.ok(userErcBalance >= 1000, `Insufficient ERC20 balance on ${users[i].ethAddress} in Ethereum network, expected 1000 ERC20, got ${userErcBalance}`)
-        const userBnbBalance = await users[i].getBepBalance()
-        assert.ok(userBnbBalance >= 0.1, `Insufficient BNB balance on ${users[i].bncAddress} in Binance network, expected 0.1 BNB, got ${userBnbBalance}`)
-        const userBepBalance = await users[i].getBepBalance()
-        assert.ok(userErcBalance >= 200, `Insufficient BEP2 balance on ${users[i].bncAddress} in Binance network, expected 200 ${FOREIGN_ASSET}, got ${userBepBalance}`)
-      }
-    })
 
     it('should generate keys', async function () {
       this.timeout(120000)
@@ -73,7 +53,7 @@ describe('bridge tests', function () {
     })
 
     after(async function () {
-      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 1000, 5)
+      await bncPrefundedUser.transferBepBnb(info.foreignBridgeAddress, 1000, 50)
       await ethPrefundedUser.transferErc(HOME_BRIDGE_ADDRESS, 1000)
     })
   })

From 642ea4e9a5529724a80ff65b8f1e751c082a2655 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 15 Nov 2019 10:20:12 +0300
Subject: [PATCH 106/129] Updated configs, removed init_blockchains separate
 step

---
 .circleci/config.yml               | 51 ------------------------------
 demo/start-ethereum-environment.sh | 12 +++----
 tests/init.sh                      |  6 ++--
 3 files changed, 9 insertions(+), 60 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index f79f9c3..b3ef664 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -21,35 +21,6 @@ orbs:
           - setup_remote_docker:
               version: 18.09.3
               docker_layer_caching: true
-      save_ganache_data:
-        description: "Save dev environment in workspace"
-        steps:
-          - run:
-              name: "Backup blockchains data using temporary container"
-              command: |
-                mkdir -p ./workspace/ganache_side_data
-                mkdir -p ./workspace/ganache_home_data
-                docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
-                docker cp "tmp:/ganache_side_data/." "./workspace/ganache_side_data"
-                docker cp "tmp:/ganache_home_data/." "./workspace/ganache_home_data"
-                docker kill tmp
-          - persist_to_workspace:
-              root: ./workspace
-              paths:
-                - ganache_side_data
-                - ganache_home_data
-      restore_ganache_data:
-        description: "Restore dev environment from workspace"
-        steps:
-          - run:
-              name: "Restore blockchains data from backup using temporary container"
-              command: |
-                docker volume create ganache_side_data
-                docker volume create ganache_home_data
-                docker run --rm -v "ganache_side_data:/ganache_side_data" -v "ganache_home_data:/ganache_home_data" -itd --name tmp alpine:3.9.4
-                docker cp "./workspace/ganache_side_data/." "tmp:/ganache_side_data"
-                docker cp "./workspace/ganache_home_data/." "tmp:/ganache_home_data"
-                docker kill tmp
       restore_tss_image:
         description: "Restores tss image from cache"
         steps:
@@ -147,23 +118,6 @@ jobs:
           name: "Build tss image"
           command: docker build --cache-from tss -t tss ./src/tss || docker build -t tss ./src/tss
       - bridge/save_tss
-  init_blockchains:
-    executor: bridge/node-dev
-    steps:
-      - bridge/fetch_repo
-      - bridge/setup_docker
-      - run:
-          name: "Stub .keys file"
-          command: touch ./src/test-services/.keys.$TARGET_NETWORK
-      - run:
-          name: "Run dev environment, deploy contracts, prefund accounts"
-          command: |
-            BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
-            cat ./tests/config.json | jq .users[].ethAddress | xargs -I {} ./src/test-services/ethereumSend/run.sh {} 1000
-      - run:
-          name: "Stop dev environment"
-          command: docker kill ganache_side ganache_home
-      - bridge/save_ganache_data
   run_tests:
     executor: bridge/node-dev
     steps:
@@ -172,17 +126,14 @@ jobs:
       - attach_workspace:
           at: ./workspace
       - bridge/load_tss
-      - bridge/restore_ganache_data
       - run:
           name: "Init tests environment"
           command: |
             BLOCK_TIME=3 ./demo/start-ethereum-environment.sh
             ./demo/start-binance-environment.sh
-            cat ./tests/config.json | jq .users[].bncAddress | xargs -I {} ./src/test-services/binanceSend/run.sh {} 300 0.1
             N=1 ./demo/validator-demo.sh -d
             N=2 ./demo/validator-demo.sh -d
             N=3 ./demo/validator-demo.sh -d
-            docker ps
       - run:
           name: "Wait until validator nodes are ready"
           command: |
@@ -214,8 +165,6 @@ workflows:
   main:
     jobs:
       - init_tss
-      - init_blockchains
       - run_tests:
           requires:
             - init_tss
-            - init_blockchains
diff --git a/demo/start-ethereum-environment.sh b/demo/start-ethereum-environment.sh
index 760c6f3..3396f86 100755
--- a/demo/start-ethereum-environment.sh
+++ b/demo/start-ethereum-environment.sh
@@ -45,13 +45,13 @@ deploy_token() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    TOKEN_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.$TARGET_NETWORK" \
+    TOKEN_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.development" \
     deploy_test \
     --network home 2>&1 \
     | grep "contract address" \
     | awk '{print $4}')
   else
-    TOKEN_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.$TARGET_NETWORK" --env-file "$DEPLOY_DIR/.keys.$TARGET_NETWORK" \
+    TOKEN_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.staging" --env-file "$DEPLOY_DIR/.keys.staging" \
     deploy_test \
     --network home 2>&1 \
     | grep "contract address" \
@@ -67,13 +67,13 @@ deploy_bridge() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    BRIDGE_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.$TARGET_NETWORK" \
+    BRIDGE_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.development" \
     deploy_home \
     --network home 2>&1 \
     | grep "contract address" \
     | awk '{print $4}')
   else
-    BRIDGE_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.$TARGET_NETWORK" --env-file "$DEPLOY_DIR/.keys.$TARGET_NETWORK" \
+    BRIDGE_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.staging" --env-file "$DEPLOY_DIR/.keys.staging" \
     deploy_home \
     --network home 2>&1 \
     | grep "contract address" \
@@ -89,13 +89,13 @@ deploy_db() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    SHARED_DB_ADDRESS=$(docker run --network blockchain_side --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.$TARGET_NETWORK" \
+    SHARED_DB_ADDRESS=$(docker run --network blockchain_side --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.development" \
     deploy_side \
     --network side 2>&1 \
     | grep "contract address" \
     | awk '{print $4}')
   else
-    SHARED_DB_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.$TARGET_NETWORK" --env-file "$DEPLOY_DIR/.keys.$TARGET_NETWORK" \
+    SHARED_DB_ADDRESS=$(docker run --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.staging" --env-file "$DEPLOY_DIR/.keys.staging" \
     deploy_side \
     --network side 2>&1 \
     | grep "contract address" \
diff --git a/tests/init.sh b/tests/init.sh
index 0261b56..eea9c62 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -19,6 +19,6 @@ N=2 ./demo/validator-demo.sh -d
 N=3 ./demo/validator-demo.sh -d
 
 echo "Waiting until validators are ready"
-until curl -X GET http://localhost:5001 > /dev/null 2>&1; do sleep 1; done
-until curl -X GET http://localhost:5002 > /dev/null 2>&1; do sleep 1; done
-until curl -X GET http://localhost:5003 > /dev/null 2>&1; do sleep 1; done
+until curl -X GET http://localhost:5001/info > /dev/null 2>&1; do sleep 1; done
+until curl -X GET http://localhost:5002/info > /dev/null 2>&1; do sleep 1; done
+until curl -X GET http://localhost:5003/info > /dev/null 2>&1; do sleep 1; done

From 6606fbab350a36b3becf5762b627a23fa218fd00 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 18 Nov 2019 19:54:41 +0300
Subject: [PATCH 107/129] Updated contracts to support signature collection in
 side chain

---
 src/deploy/deploy-home/contracts/Bridge.sol   | 65 +++++++++++++++++--
 .../deploy-side/contracts/KeyValueStorage.sol | 17 +++++
 src/deploy/deploy-side/contracts/SharedDB.sol | 43 ++----------
 .../contracts/SignedMessageStorage.sol        | 43 ++++++++++++
 .../deploy-side/contracts/SignupStorage.sol   | 33 ++++++++++
 5 files changed, 157 insertions(+), 44 deletions(-)
 create mode 100644 src/deploy/deploy-side/contracts/KeyValueStorage.sol
 create mode 100644 src/deploy/deploy-side/contracts/SignedMessageStorage.sol
 create mode 100644 src/deploy/deploy-side/contracts/SignupStorage.sol

diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index cdd3f7f..8be1986 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -54,6 +54,7 @@ contract Bridge {
     mapping(bytes32 => uint) public votesCount;
     mapping(bytes32 => bool) public votes;
     mapping(bytes32 => bool) public usedRange;
+    mapping(bytes32 => bool) public handledTx;
 
     Status public status;
 
@@ -146,9 +147,59 @@ contract Bridge {
         emit ExchangeRequest(value, getNonce());
     }
 
-    function transfer(bytes32 hash, address to, uint value) public readyOrClosing currentValidator {
-        if (tryVote(Vote.TRANSFER, hash, to, value)) {
-            tokenContract.transfer(to, value);
+    function transfer(bytes memory message, bytes memory signatures) public {
+        require(message.length == 116, "Incorrect message length");
+        require(signatures.length % 65 == 0, "Incorrect signatures length");
+
+        uint msgEpoch;
+        bytes32 msgId;
+        address msgTo;
+        uint msgValue;
+
+        assembly {
+            msgEpoch := mload(add(message, 32))
+            msgId := mload(add(message, 64))
+            msgTo := mload(add(message, 84))
+            msgValue := mload(add(message, 116))
+        }
+
+        require(msgEpoch <= epoch, "Invalid epoch number");
+        require(!handledTx[msgId], "Tx was already handled");
+        handledTx[msgId] = true;
+
+        address[] memory msgValidators = getValidatorsInEpoch(msgEpoch);
+
+        require(signatures.length / 65 >= getThreshold(msgEpoch), "Not enough signatures");
+
+        bytes32 msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n116", message));
+
+        bytes32 r;
+        bytes32 s;
+        uint8 v;
+
+        for (uint i = 0; i < signatures.length / 65; i++) {
+            uint offset = i * 65;
+
+            assembly {
+                r := mload(add(add(signatures,32),offset))
+                s := mload(add(add(signatures,64),offset))
+                v := byte(0, mload(add(add(signatures,96),offset)))
+            }
+
+            address signer = ecrecover(msgHash, v, r, s);
+            uint j;
+            for (j = 0; j < msgValidators.length; j++) {
+                if (msgValidators[j] == signer) {
+                    delete msgValidators[j];
+                    break;
+                }
+            }
+            require(j != msgValidators.length);
+        }
+        if (tokenContract.balanceOf(address(this)) >= msgValue) {
+            tokenContract.transfer(msgTo, msgValue);
+        } else {
+            tokenContract.approve(msgTo, msgValue);
         }
     }
 
@@ -282,11 +333,15 @@ contract Bridge {
     }
 
     function getValidators() view public returns (address[] memory) {
-        return states[epoch].validators;
+        return getValidatorsInEpoch(epoch);
     }
 
     function getNextValidators() view public returns (address[] memory) {
-        return states[nextEpoch].validators;
+        return getValidatorsInEpoch(nextEpoch);
+    }
+
+    function getValidatorsInEpoch(uint _epoch) view public returns (address[] memory) {
+        return states[_epoch].validators;
     }
 
     function startVoting() public readyOrVoting currentValidator {
diff --git a/src/deploy/deploy-side/contracts/KeyValueStorage.sol b/src/deploy/deploy-side/contracts/KeyValueStorage.sol
new file mode 100644
index 0000000..54cff21
--- /dev/null
+++ b/src/deploy/deploy-side/contracts/KeyValueStorage.sol
@@ -0,0 +1,17 @@
+pragma solidity ^0.5.0;
+
+contract KeyValueStorage {
+    mapping(bytes32 => bytes) public db;
+
+    function setData(bytes32 id, bytes32 key, bytes memory data) public {
+        db[encodeKey(msg.sender, id, key)] = data;
+    }
+
+    function getData(address from, bytes32 id, bytes32 key) view public returns (bytes memory) {
+        return db[encodeKey(from, id, key)];
+    }
+
+    function encodeKey(address sender, bytes32 id, bytes32 key) private pure returns (bytes32 hash) {
+        return keccak256(abi.encodePacked(sender, id, key));
+    }
+}
diff --git a/src/deploy/deploy-side/contracts/SharedDB.sol b/src/deploy/deploy-side/contracts/SharedDB.sol
index 16bda1b..9bcfd5c 100644
--- a/src/deploy/deploy-side/contracts/SharedDB.sol
+++ b/src/deploy/deploy-side/contracts/SharedDB.sol
@@ -1,42 +1,7 @@
 pragma solidity ^0.5.0;
 
-contract SharedDB {
-    mapping(bytes32 => bytes) public db;
-    mapping(bytes32 => uint) public signupsCount;
-    mapping(bytes32 => uint) public dbSignups;
+import "./KeyValueStorage.sol";
+import "./SignedMessageStorage.sol";
+import "./SignupStorage.sol";
 
-    function signupSign(bytes32 hash) public {
-        require(dbSignups[keccak256(abi.encodePacked(msg.sender, hash))] == 0, "Already signuped");
-
-        dbSignups[keccak256(abi.encodePacked(msg.sender, hash))] = ++signupsCount[hash];
-    }
-
-    function getSignupNumber(bytes32 hash, address[] memory validators, address validator) view public returns (uint) {
-        if (dbSignups[keccak256(abi.encodePacked(validator, hash))] == 0)
-            return 0;
-        uint id = 1;
-        for (uint i = 0; i < validators.length; i++) {
-            uint vid = dbSignups[keccak256(abi.encodePacked(validators[i], hash))];
-            if (vid > 0 && vid < dbSignups[keccak256(abi.encodePacked(validator, hash))])
-                id++;
-        }
-        return id;
-    }
-
-    function getSignupAddress(bytes32 hash, address[] memory validators, uint signupNumber) view public returns (address) {
-        for (uint i = 0; i < validators.length; i++) {
-            if (getSignupNumber(hash, validators, validators[i]) == signupNumber) {
-                return validators[i];
-            }
-        }
-        return address(0);
-    }
-
-    function setData(bytes32 hash, bytes32 key, bytes memory data) public {
-        db[keccak256(abi.encodePacked(msg.sender, hash, key))] = data;
-    }
-
-    function getData(address from, bytes32 hash, bytes32 key) view public returns (bytes memory) {
-        return db[keccak256(abi.encodePacked(from, hash, key))];
-    }
-}
+contract SharedDB is KeyValueStorage, SignedMessageStorage, SignupStorage {}
diff --git a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
new file mode 100644
index 0000000..bbbb675
--- /dev/null
+++ b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
@@ -0,0 +1,43 @@
+pragma solidity ^0.5.0;
+
+contract SignedMessageStorage {
+    struct SignedMessage {
+        bytes message;
+        mapping(address => bytes) signatures;
+    }
+
+    mapping(bytes32 => SignedMessage) signedMessages;
+
+    function addSignature(bytes memory message, bytes memory rsv) public {
+        require(message.length == 116, "Incorrect message length");
+        require(rsv.length == 65, "Incorrect signature length");
+
+        bytes32 msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n116", message));
+
+        bytes32 r;
+        bytes32 s;
+        uint8 v;
+
+        assembly {
+            r := mload(add(rsv, 32))
+            s := mload(add(rsv, 64))
+            v := byte(0, mload(add(rsv, 96)))
+        }
+
+        require(ecrecover(msgHash, v, r, s) == msg.sender);
+
+        if (signedMessages[msgHash].message.length == 0) {
+            signedMessages[msgHash].message = message;
+        }
+        signedMessages[msgHash].signatures[msg.sender] = rsv;
+    }
+
+    function getSignatures(bytes32 msgHash, address[] memory validators) public view returns (bytes memory) {
+        bytes memory result;
+        for (uint i = 0; i < validators.length; i++) {
+            result = abi.encodePacked(result, signedMessages[msgHash].signatures[validators[i]]);
+        }
+        return result;
+    }
+
+}
diff --git a/src/deploy/deploy-side/contracts/SignupStorage.sol b/src/deploy/deploy-side/contracts/SignupStorage.sol
new file mode 100644
index 0000000..4b932f2
--- /dev/null
+++ b/src/deploy/deploy-side/contracts/SignupStorage.sol
@@ -0,0 +1,33 @@
+pragma solidity ^0.5.0;
+
+contract SignupStorage {
+    mapping(bytes32 => uint) public signupsCount;
+    mapping(bytes32 => mapping(address => uint)) public signups;
+
+    function signup(bytes32 hash) public {
+        require(signups[hash][msg.sender] == 0, "Already signuped");
+
+        signups[hash][msg.sender] = ++signupsCount[hash];
+    }
+
+    function getSignupNumber(bytes32 hash, address[] memory validators, address validator) view public returns (uint) {
+        if (signups[hash][validator] == 0)
+            return 0;
+        uint id = 1;
+        for (uint i = 0; i < validators.length; i++) {
+            uint vid = signups[hash][validators[i]];
+            if (vid > 0 && vid < signups[hash][validator])
+                id++;
+        }
+        return id;
+    }
+
+    function getSignupAddress(bytes32 hash, address[] memory validators, uint signupNumber) view public returns (address) {
+        for (uint i = 0; i < validators.length; i++) {
+            if (getSignupNumber(hash, validators, validators[i]) == signupNumber) {
+                return validators[i];
+            }
+        }
+        return address(0);
+    }
+}

From bad32ea86136f7f51650a5fb06f2cf8c6e7799e5 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 18 Nov 2019 19:55:37 +0300
Subject: [PATCH 108/129] Updated docker configs for binance testnet

---
 src/binance-testnet/Dockerfile            | 2 +-
 src/binance-testnet/api-server/Dockerfile | 6 +++---
 src/binance-testnet/docker-compose.yml    | 1 +
 src/binance-testnet/node/Dockerfile       | 1 -
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/binance-testnet/Dockerfile b/src/binance-testnet/Dockerfile
index 10a9e73..b4b0a92 100644
--- a/src/binance-testnet/Dockerfile
+++ b/src/binance-testnet/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:19.10 as build
+FROM ubuntu:19.10
 
 ARG BNC_VERSION=0.6.2
 
diff --git a/src/binance-testnet/api-server/Dockerfile b/src/binance-testnet/api-server/Dockerfile
index 1ea7aef..17be5fa 100644
--- a/src/binance-testnet/api-server/Dockerfile
+++ b/src/binance-testnet/api-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:10.16.0-alpine
+FROM alpine:3.9.4
 
 ARG BNC_VERSION=0.6.2
 
@@ -6,8 +6,8 @@ WORKDIR /api-server
 
 COPY --from=testnet-binaries /binaries/cli/testnet/${BNC_VERSION}/linux/tbnbcli ./
 
-RUN echo 12345678 | ./tbnbcli keys add key
+RUN echo 12345678 | ./tbnbcli keys add key --no-backup
 
 EXPOSE 8080
 
-ENTRYPOINT ["./tbnbcli", "api-server", "--chain-id", "Binance-Dev", "--node", "http://node:26657", "--laddr", "tcp://0.0.0.0:8080"]
+ENTRYPOINT ["./tbnbcli", "api-server", "--chain-id", "Binance-Dev", "--laddr", "tcp://0.0.0.0:8080", "--node"]
diff --git a/src/binance-testnet/docker-compose.yml b/src/binance-testnet/docker-compose.yml
index ebe2cff..b2ad8f1 100644
--- a/src/binance-testnet/docker-compose.yml
+++ b/src/binance-testnet/docker-compose.yml
@@ -17,6 +17,7 @@ services:
       - binance_rpc_net
     ports:
       - '8080:8080'
+    command: ["http://node:26657"]
   http-api:
     build: http-api
     image: bnc-http-api
diff --git a/src/binance-testnet/node/Dockerfile b/src/binance-testnet/node/Dockerfile
index fabf1b2..0ee5779 100644
--- a/src/binance-testnet/node/Dockerfile
+++ b/src/binance-testnet/node/Dockerfile
@@ -1,4 +1,3 @@
-#echo 12345678 | docker exec -i 5f6f653730442d81b6e34a82ac3dc8a82f071c1eec130bc09a0dca803ad00bd2 ./tbnbcli send --to tbnb1efjg7xt98t67ql2cmwjc5860lgayet9l8m55ym --amount 100:BNB --from node0 --chain-id Binance-Dev --json
 FROM alpine:3.9.4
 
 ARG BNC_VERSION=0.6.2

From 31ccce5020fea54962bf81a6fa824bbaea03c178 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 18 Nov 2019 19:56:51 +0300
Subject: [PATCH 109/129] Support of collecting signatures in side chain for
 oracle

---
 src/oracle/bncWatcher/bncWatcher.js |  5 +++--
 src/oracle/proxy/contractsAbi.js    |  7 +++++--
 src/oracle/proxy/index.js           | 23 +++++++++++++++++------
 src/oracle/proxy/sendTx.js          |  2 +-
 4 files changed, 26 insertions(+), 11 deletions(-)

diff --git a/src/oracle/bncWatcher/bncWatcher.js b/src/oracle/bncWatcher/bncWatcher.js
index 2393e17..c66ba36 100644
--- a/src/oracle/bncWatcher/bncWatcher.js
+++ b/src/oracle/bncWatcher/bncWatcher.js
@@ -160,8 +160,9 @@ async function loop() {
       const publicKeyEncoded = (await getTx(tx.txHash)).signatures[0].pub_key.value
       await proxyHttpClient.post('/transfer', {
         to: computeAddress(Buffer.from(publicKeyEncoded, 'base64')),
-        value: new BN(tx.value).multipliedBy(10 ** 18).integerValue(),
-        hash: `0x${tx.txHash}`
+        value: new BN(tx.value).multipliedBy(10 ** 18).toString(16),
+        hash: tx.txHash,
+        epoch
       })
     }
   }
diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
index 6f80832..b9b7524 100644
--- a/src/oracle/proxy/contractsAbi.js
+++ b/src/oracle/proxy/contractsAbi.js
@@ -14,6 +14,7 @@ const bridgeAbi = [
   'function getNextThreshold() view returns (uint)',
   'function getValidators() view returns (address[])',
   'function getNextValidators() view returns (address[])',
+  'function getValidatorsInEpoch(uint _epoch) view returns (address[])',
   'function getCloseEpoch() view returns (bool)',
   'function getNextCloseEpoch() view returns (bool)',
   'function status() view returns (uint)',
@@ -29,14 +30,16 @@ const bridgeAbi = [
   'function voteRemoveValidator(address validator)',
   'function voteChangeThreshold(uint threshold)',
   'function voteChangeCloseEpoch(bool closeEpoch)',
-  'function transfer(bytes32 hash, address to, uint value)'
+  'function transfer(bytes message, bytes signatures)'
 ]
 const sharedDbAbi = [
   'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
   'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
   'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint)',
   'function setData(bytes32 hash, bytes32 key, bytes data)',
-  'function signupSign(bytes32 hash)'
+  'function signup(bytes32 hash)',
+  'function addSignature(bytes message, bytes rsv)',
+  'function getSignatures(bytes32 msgHash, address[] validators) view returns (bytes)'
 ]
 
 module.exports = {
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 77e9bee..cff78bc 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -12,7 +12,8 @@ const encode = require('./encode')
 const decode = require('./decode')
 const { createSender, waitForReceipt } = require('./sendTx')
 const logger = require('./logger')
-const { publicKeyToAddress } = require('./crypto')
+const { publicKeyToAddress, padZeros } = require('./crypto')
+const { delay } = require('./wait')
 
 const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS, VALIDATOR_PRIVATE_KEY,
@@ -148,7 +149,7 @@ async function signupKeygen(req, res) {
 async function signupSign(req, res) {
   logger.debug('SignupSign call')
   const hash = ethers.utils.id(req.body.third)
-  const query = sharedDb.interface.functions.signupSign.encode([hash])
+  const query = sharedDb.interface.functions.signup.encode([hash])
   const { txHash } = await sideSendQuery(query)
   const receipt = await waitForReceipt(SIDE_RPC_URL, txHash)
 
@@ -283,11 +284,21 @@ async function voteRemoveValidator(req, res) {
 
 async function transfer(req, res) {
   logger.info('Transfer start')
-  const { hash, to, value } = req.body
+  const {
+    hash, to, value, epoch
+  } = req.body
   if (ethers.utils.isHexString(to, 20)) {
-    logger.info(`Calling transfer to ${to}, ${value} tokens`)
-    const query = bridge.interface.functions.transfer.encode([hash, to, `0x${new BN(value).toString(16)}`])
-    await homeSendQuery(query)
+    logger.info(`Calling transfer to ${to}, 0x${value} tokens`)
+    const message = Buffer.from(padZeros(epoch.toString(16), 64) + hash + to.slice(2) + padZeros(value, 64), 'hex')
+    const signature = await sideWallet.signMessage(message)
+    const query = sharedDb.interface.functions.addSignature.encode([`0x${message.toString('hex')}`, signature])
+    await sideSendQuery(query)
+    await delay(5000)
+    const validators = await bridge.getValidatorsInEpoch(epoch)
+    const signatures = await sharedDb.getSignatures(ethers.utils.hashMessage(message), validators)
+    logger.debug(`Transfer call, message 0x${message.toString('hex')}, signatures ${signatures}`)
+    const query1 = bridge.interface.functions.transfer.encode([`0x${message.toString('hex')}`, signatures])
+    await homeSendQuery(query1)
   }
   res.send()
   logger.info('Transfer end')
diff --git a/src/oracle/proxy/sendTx.js b/src/oracle/proxy/sendTx.js
index f00188e..f73adf3 100644
--- a/src/oracle/proxy/sendTx.js
+++ b/src/oracle/proxy/sendTx.js
@@ -68,7 +68,7 @@ async function createSender(url, privateKey) {
 
       return {
         txHash: result,
-        gasLimit: tx.gasLimit
+        gasLimit: newTx.gasLimit
       }
     } catch (e) {
       logger.warn('Something failed, %o', e)

From cad2d3b16cdc0f10276af6c5110f9eda58588207 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 18 Nov 2019 19:57:16 +0300
Subject: [PATCH 110/129] Increased bnc => eth timeout

---
 tests/test/bncToEth.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/test/bncToEth.js b/tests/test/bncToEth.js
index 143b3d0..da41899 100644
--- a/tests/test/bncToEth.js
+++ b/tests/test/bncToEth.js
@@ -17,6 +17,7 @@ module.exports = (getUsers) => {
     })
 
     it('should make correct exchange transactions on eth side', async function () {
+      this.timeout(120000)
       for (let i = 0; i < 3; i += 1) {
         const user = users[i]
         await waitPromise(

From 3e86eca6f58f2b4145f7dd04cc23623d958419b4 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Thu, 21 Nov 2019 15:16:01 +0300
Subject: [PATCH 111/129] Restart bep token issue on fail

---
 demo/start-binance-environment.sh | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/demo/start-binance-environment.sh b/demo/start-binance-environment.sh
index 5d56c69..1b3a121 100755
--- a/demo/start-binance-environment.sh
+++ b/demo/start-binance-environment.sh
@@ -31,12 +31,15 @@ docker build -t testnet-binaries ../src/binance-testnet > /dev/null 2>&1 || true
 echo "Running environment"
 docker-compose -f ../src/binance-testnet/docker-compose.yml up --build -d
 
-sleep 2
-
 if [[ -n "$need_to_deploy" ]]; then
     echo "Issuing test asset"
-    ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 10000000000000000 --token-name "DEV Token" | jq .Response.log)
-    TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
+    TOKEN_SYMBOL=''
+    while [[ -z "$TOKEN_SYMBOL" ]]; do
+        sleep 2
+        ISSUED_LOG=$(tbnbcli token issue --symbol DEV --total-supply 10000000000000000 --token-name "DEV Token" | jq .Response.log)
+        TOKEN_SYMBOL=${ISSUED_LOG:(-8):7}
+    done
+
     echo "Issued $TOKEN_SYMBOL"
 
     sed -i 's/FOREIGN_ASSET=.*$/FOREIGN_ASSET='"$TOKEN_SYMBOL"'/' ../src/test-services/binanceBalance/.env.development

From 11c396e674f6c85494781a1b2df65e4d0f15fce3 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Fri, 22 Nov 2019 13:39:30 +0300
Subject: [PATCH 112/129] Separate docker-compose for ethereum testnet and side
 oracle

---
 .circleci/config.yml                          |   4 +-
 DEMO.md                                       |  18 +--
 demo/clean.sh                                 |  11 ++
 demo/start-ethereum-environment.sh            |  57 ++++------
 src/ethereum-testnet/docker-compose.yml       |  37 ++++++
 .../side-oracle/.env.development              |   9 ++
 src/ethereum-testnet/side-oracle/Dockerfile   |  14 +++
 src/ethereum-testnet/side-oracle/index.js     | 107 ++++++++++++++++++
 src/ethereum-testnet/side-oracle/package.json |  10 ++
 src/oracle/docker-compose-test.yml            |  10 +-
 src/test-services/ethereumBalance/run.sh      |   2 +-
 src/test-services/ethereumSend/run.sh         |   2 +-
 src/test-services/sidePrefund/run.sh          |   2 +-
 tests/run.sh                                  |   4 +-
 14 files changed, 230 insertions(+), 57 deletions(-)
 create mode 100644 src/ethereum-testnet/docker-compose.yml
 create mode 100644 src/ethereum-testnet/side-oracle/.env.development
 create mode 100644 src/ethereum-testnet/side-oracle/Dockerfile
 create mode 100644 src/ethereum-testnet/side-oracle/index.js
 create mode 100644 src/ethereum-testnet/side-oracle/package.json

diff --git a/.circleci/config.yml b/.circleci/config.yml
index b3ef664..18daaeb 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -147,8 +147,8 @@ jobs:
             docker build -t tests ./tests
             docker create --env-file ./tests/.env --name tests tests
             docker network connect binance_net tests
-            docker network connect blockchain_side tests
-            docker network connect blockchain_home tests
+            docker network connect ethereum_side_rpc_net tests
+            docker network connect ethereum_home_rpc_net tests
             docker network connect validator1_test_network tests
             docker network connect validator2_test_network tests
             docker network connect validator3_test_network tests
diff --git a/DEMO.md b/DEMO.md
index 9dde9b6..2d5a5f4 100644
--- a/DEMO.md
+++ b/DEMO.md
@@ -331,21 +331,13 @@ Make sure, to first run demo in development mode, before trying to run it in the
    docker kill binance-testnet_http-api_1
    docker kill binance-testnet_node_1
    docker kill binance-testnet_api-server_1
-   docker kill ganache_home
-   docker kill ganache_side
+   docker kill ethereum-testnet_ganache_home_1
+   docker kill ethereum-testnet_ganache_side_1
+   docker kill ethereum-testnet_side_oracle_1
    ```
-3. Remove virtual networks:
+3. Remove testnets and validators data:
    ```
-   docker network rm binance_net
-   docker network rm blockchain_home
-   docker network rm blockchain_side
-   docker network rm validator1_test_network
-   docker network rm validator2_test_network
-   docker network rm validator3_test_network
-   ```
-4. Remove testnets and validators data:
-   ```
-   TARGET_NETWORK=<network> ./demo/clean.sh
+   TARGET_NETWORK=development ./demo/clean.sh
    ```
 
 #### Testing tools for both sides of the bridge
diff --git a/demo/clean.sh b/demo/clean.sh
index 0b5586d..bf59570 100755
--- a/demo/clean.sh
+++ b/demo/clean.sh
@@ -15,14 +15,25 @@ docker kill ganache_home ganache_side > /dev/null 2>&1 || true
 docker rm ganache_home ganache_side > /dev/null 2>&1 || true
 docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
 docker rm $(docker ps -a | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker kill $(docker ps | grep ethereum-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+docker rm $(docker ps -a | grep ethereum-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
   docker volume rm ganache_side_data > /dev/null 2>&1 || true
   docker volume rm ganache_home_data > /dev/null 2>&1 || true
   docker volume rm binance_data > /dev/null 2>&1 || true
   docker volume rm binance_marketdata > /dev/null 2>&1 || true
+
+  docker network rm ethereum_side_rpc_net > /dev/null 2>&1 || true
+  docker network rm ethereum_home_rpc_net > /dev/null 2>&1 || true
+  docker network rm binance_net > /dev/null 2>&1 || true
+  docker network rm binance-testnet_binance_rpc_net > /dev/null 2>&1 || true
 fi
 
+docker network rm validator1_test_network > /dev/null 2>&1 || true
+docker network rm validator2_test_network > /dev/null 2>&1 || true
+docker network rm validator3_test_network > /dev/null 2>&1 || true
+
 for (( I = 1; I < 4; ++I )); do
     DIRNAME="validator$I"
     rm -rf "$DIRNAME/$TARGET_NETWORK"
diff --git a/demo/start-ethereum-environment.sh b/demo/start-ethereum-environment.sh
index 3396f86..19a3800 100755
--- a/demo/start-ethereum-environment.sh
+++ b/demo/start-ethereum-environment.sh
@@ -13,29 +13,8 @@ DEPLOY_DIR="`pwd`/src/deploy"
 TEST_SERVICES_DIR="`pwd`/src/test-services"
 DEMO_DIR="`pwd`/demo"
 
-start_dev_blockchain_networks() {
-  echo "Starting side test blockchain"
-
-  docker kill ganache_side > /dev/null 2>&1 || true
-  docker network create blockchain_side > /dev/null 2>&1 || true
-  docker volume create ganache_side_data > /dev/null 2>&1 || true
-  docker run -d --network blockchain_side --rm --name ganache_side -v "ganache_side_data:/app/db" \
-      -p "7545:8545" \
-      trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 33 --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
-
-  echo "Starting home test blockchain"
-
-  docker kill ganache_home > /dev/null 2>&1 || true
-  docker network create blockchain_home > /dev/null 2>&1 || true
-  docker volume create ganache_home_data > /dev/null 2>&1 || true
-  docker run -d --network blockchain_home --rm --name ganache_home -v "ganache_home_data:/app/db" \
-      -p "8545:8545" \
-      trufflesuite/ganache-cli:latest \
-      -m "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat" -i 44 --db /app/db -b "$BLOCK_TIME" --noVMErrorsOnRPCResponse
-
-  sleep 4
-}
+HOME_NETWORK="ethereum_home_rpc_net"
+SIDE_NETWORK="ethereum_side_rpc_net"
 
 deploy_token() {
   echo "Compiling and deploying erc20"
@@ -45,7 +24,7 @@ deploy_token() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    TOKEN_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.development" \
+    TOKEN_ADDRESS=$(docker run --network "$HOME_NETWORK" --rm -v "$DEPLOY_DIR/deploy-test/build:/build/build" --env-file "$DEPLOY_DIR/deploy-test/.env.development" \
     deploy_test \
     --network home 2>&1 \
     | grep "contract address" \
@@ -67,7 +46,7 @@ deploy_bridge() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    BRIDGE_ADDRESS=$(docker run --network blockchain_home --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.development" \
+    BRIDGE_ADDRESS=$(docker run --network "$HOME_NETWORK" --rm -v "$DEPLOY_DIR/deploy-home/build:/build/build" --env-file "$DEPLOY_DIR/deploy-home/.env.development" \
     deploy_home \
     --network home 2>&1 \
     | grep "contract address" \
@@ -89,7 +68,7 @@ deploy_db() {
 
   echo "Deploying"
   if [[ "$TARGET_NETWORK" == "development" ]]; then
-    SHARED_DB_ADDRESS=$(docker run --network blockchain_side --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.development" \
+    SHARED_DB_ADDRESS=$(docker run --network "$SIDE_NETWORK" --rm -v "$DEPLOY_DIR/deploy-side/build:/build/build" --env-file "$DEPLOY_DIR/deploy-side/.env.development" \
     deploy_side \
     --network side 2>&1 \
     | grep "contract address" \
@@ -131,25 +110,39 @@ deploy_all() {
   sed -i 's/HOME_TOKEN_ADDRESS=.*$/HOME_TOKEN_ADDRESS='"$TOKEN_ADDRESS"'/' "$TEST_SERVICES_DIR/ethereumSend/.env.$TARGET_NETWORK"
 }
 
-
-
-
 if [[ "$TARGET_NETWORK" == "development" ]]; then
 
   if [[ "$(docker volume ls | grep ganache_side_data)" ]] || [[ "$(docker volume ls | grep ganache_home_data)" ]]; then
-    echo "Restarting dev blockchain networks"
+    echo "Restarting ethereum test network"
   else
-    echo "Starting dev blockchain networks and deploying contracts"
+    echo "Creating new ethereum test network"
+
+    echo "Removing old environment"
+    docker kill $(docker ps -a | grep ethereum-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+    docker rm $(docker ps -a | grep ethereum-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
+    docker volume rm ganache_side_data > /dev/null 2>&1 || true
+    docker volume rm ganache_home_data > /dev/null 2>&1 || true
+
+    docker network create ethereum_side_rpc_net > /dev/null 2>&1 || true
+    docker network create ethereum_home_rpc_net > /dev/null 2>&1 || true
+    docker volume create ganache_side_data > /dev/null 2>&1 || true
+    docker volume create ganache_home_data > /dev/null 2>&1 || true
+
     need_to_deploy=true
   fi
 
-  start_dev_blockchain_networks
+  echo "Starting ethereum test environment"
+
+  BLOCK_TIME="$BLOCK_TIME" docker-compose -f ./src/ethereum-testnet/docker-compose.yml up --build -d
+
+  sleep 4
 
   if [[ -n "$need_to_deploy" ]]; then
     deploy_all
   else
     echo "Contracts are already deployed, run clean.sh first if you want to redeploy everything"
   fi
+
 else
   echo "Deploying to the staging blockchain environment"
 
diff --git a/src/ethereum-testnet/docker-compose.yml b/src/ethereum-testnet/docker-compose.yml
new file mode 100644
index 0000000..4003362
--- /dev/null
+++ b/src/ethereum-testnet/docker-compose.yml
@@ -0,0 +1,37 @@
+version: '3.0'
+services:
+  ganache_side:
+    image: trufflesuite/ganache-cli:latest
+    command: ["-m", "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat", "-i", "33", "--db", "/app/db", "-b", "${BLOCK_TIME}", "--noVMErrorsOnRPCResponse"]
+    networks:
+      - ethereum_side_rpc_net
+    ports:
+      - '7545:8545'
+    volumes:
+      - 'ganache_side_data:/app/db'
+  ganache_home:
+    image: trufflesuite/ganache-cli:latest
+    command: ["-m", "shrug dwarf easily blade trigger lucky reopen cage lake scatter desk boat", "-i", "44", "--db", "/app/db", "-b", "${BLOCK_TIME}", "--noVMErrorsOnRPCResponse"]
+    networks:
+      - ethereum_home_rpc_net
+    ports:
+      - '8545:8545'
+    volumes:
+      - 'ganache_home_data:/app/db'
+  side_oracle:
+    build: side-oracle
+    image: side-oracle
+    env_file: side-oracle/.env.development
+    networks:
+      - ethereum_side_rpc_net
+      - ethereum_home_rpc_net
+networks:
+  ethereum_side_rpc_net:
+    external: true
+  ethereum_home_rpc_net:
+    external: true
+volumes:
+  ganache_side_data:
+    external: true
+  ganache_home_data:
+    external: true
diff --git a/src/ethereum-testnet/side-oracle/.env.development b/src/ethereum-testnet/side-oracle/.env.development
new file mode 100644
index 0000000..08ced61
--- /dev/null
+++ b/src/ethereum-testnet/side-oracle/.env.development
@@ -0,0 +1,9 @@
+HOME_RPC_URL=http://ganache_home:8545
+HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
+
+HOME_PRIVATE_KEY=e2aeb24eaa63102d0c0821717c3b6384abdabd7af2ad4ec8e650dce300798b27
+
+SIDE_RPC_URL=http://ganache_side:8545
+SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
+SIDE_MAX_FETCH_RANGE_SIZE=100
+
diff --git a/src/ethereum-testnet/side-oracle/Dockerfile b/src/ethereum-testnet/side-oracle/Dockerfile
new file mode 100644
index 0000000..ad6c12d
--- /dev/null
+++ b/src/ethereum-testnet/side-oracle/Dockerfile
@@ -0,0 +1,14 @@
+FROM node:10.16.0-alpine
+
+WORKDIR /side-oracle
+
+RUN apk update && \
+    apk add libssl1.1 libressl-dev curl
+
+COPY ./package.json /side-oracle/
+
+RUN npm install
+
+COPY ./index.js ./
+
+ENTRYPOINT ["node", "index.js"]
diff --git a/src/ethereum-testnet/side-oracle/index.js b/src/ethereum-testnet/side-oracle/index.js
new file mode 100644
index 0000000..f567bb7
--- /dev/null
+++ b/src/ethereum-testnet/side-oracle/index.js
@@ -0,0 +1,107 @@
+const ethers = require('ethers')
+
+const {
+  HOME_PRIVATE_KEY, HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS
+} = process.env
+const SIDE_MAX_FETCH_RANGE_SIZE = parseInt(process.env.SIDE_MAX_FETCH_RANGE_SIZE, 10)
+
+const bridgeAbi = [
+  'function applyMessage(bytes message, bytes signatures)',
+  'function getThreshold(uint epoch) view returns (uint)',
+  'function getValidatorsInEpoch(uint epoch) view returns (address[])'
+]
+const sharedDbAbi = [
+  'event NewMessage(bytes32 msgHash)',
+  'function getSignatures(bytes32 msgHash, address[] validators) view returns (bytes)'
+]
+
+let homeProvider
+let sideProvider
+let bridge
+let sharedDb
+let homeWallet
+let nonce
+let blockNumber = 0
+
+async function delay(ms) {
+  await new Promise((res) => setTimeout(res, ms))
+}
+
+async function handleNewMessage(event) {
+  const { msgHash } = event.values
+  const message = (await sharedDb.signedMessages(msgHash))[0]
+  const epoch = parseInt(message.slice(30, 3).toString('hex'), 16)
+  const [threshold, validators] = await Promise.all([
+    bridge.getThreshold(epoch),
+    bridge.getValidatorsInEpoch(epoch)
+  ])
+
+  while (true) {
+    const signatures = await sharedDb.getSignatures(msgHash, validators)
+    if (signatures.length / 65 >= threshold) {
+      const tx = await bridge.applyMessage(message, signatures, {
+        gasLimit: 1000000,
+        nonce
+      })
+      await tx.wait()
+      nonce += 1
+      break
+    }
+  }
+}
+
+async function initialize() {
+  await delay(5000)
+  sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+  homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
+  bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeProvider)
+  sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideProvider)
+
+  homeWallet = new ethers.Wallet(HOME_PRIVATE_KEY, homeProvider)
+
+  nonce = await homeWallet.getTransactionCount()
+}
+
+async function loop() {
+  const latestBlockNumber = await sideProvider.getBlockNumber()
+  if (latestBlockNumber < blockNumber) {
+    console.log(`No block after ${latestBlockNumber}`)
+    return
+  }
+
+  const endBlock = Math.min(latestBlockNumber, blockNumber + SIDE_MAX_FETCH_RANGE_SIZE - 1)
+
+  console.log(`Watching events in blocks #${blockNumber}-${endBlock}`)
+
+  const bridgeEvents = (await sideProvider.getLogs({
+    address: SIDE_SHARED_DB_ADDRESS,
+    fromBlock: blockNumber,
+    toBlock: endBlock,
+    topics: []
+  }))
+
+  for (let i = 0; i < bridgeEvents.length; i += 1) {
+    const event = bridge.interface.parseLog(bridgeEvents[i])
+    console.log('Consumed event', event, bridgeEvents[i])
+    switch (event.name) {
+      case 'NewMessage':
+        await handleNewMessage(event)
+        break
+      default:
+        console.log('Unknown event %o', event)
+    }
+  }
+
+  blockNumber = endBlock + 1
+}
+
+async function main() {
+  await initialize()
+
+  while (true) {
+    await delay(2000)
+    await loop()
+  }
+}
+
+main()
diff --git a/src/ethereum-testnet/side-oracle/package.json b/src/ethereum-testnet/side-oracle/package.json
new file mode 100644
index 0000000..f09b986
--- /dev/null
+++ b/src/ethereum-testnet/side-oracle/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "side-oracle",
+  "version": "0.0.1",
+  "dependencies": {
+    "ethers": "4.0.33"
+  },
+  "engines": {
+    "node": ">=10.6.0"
+  }
+}
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 939f22f..4dbadd6 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -23,8 +23,8 @@ services:
       test_network:
         aliases:
           - local_proxy
-      blockchain_home:
-      blockchain_side:
+      ethereum_home_rpc_net:
+      ethereum_side_rpc_net:
       binance_net:
   keygen:
     image: keygen-client
@@ -96,7 +96,7 @@ services:
       - LOG_LEVEL
     networks:
       - test_network
-      - blockchain_home
+      - ethereum_home_rpc_net
   bnc-watcher:
     build:
       dockerfile: bncWatcher/Dockerfile
@@ -118,9 +118,9 @@ services:
       - binance_net
 networks:
   test_network:
-  blockchain_side:
+  ethereum_side_rpc_net:
     external: true
-  blockchain_home:
+  ethereum_home_rpc_net:
     external: true
   binance_net:
     external: true
diff --git a/src/test-services/ethereumBalance/run.sh b/src/test-services/ethereumBalance/run.sh
index 9dbef3f..58dc621 100755
--- a/src/test-services/ethereumBalance/run.sh
+++ b/src/test-services/ethereumBalance/run.sh
@@ -10,7 +10,7 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 docker build -t ethereum-balance . > /dev/null
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
-    docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
+    docker run --network ethereum_home_rpc_net --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
 else
     docker run --rm --env-file ".env.$TARGET_NETWORK" ethereum-balance $@
 fi
diff --git a/src/test-services/ethereumSend/run.sh b/src/test-services/ethereumSend/run.sh
index 3808257..8980f27 100755
--- a/src/test-services/ethereumSend/run.sh
+++ b/src/test-services/ethereumSend/run.sh
@@ -10,7 +10,7 @@ TARGET_NETWORK=${TARGET_NETWORK:=development}
 docker build -t ethereum-send . > /dev/null
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
-    docker run --network blockchain_home --rm --env-file ".env.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
+    docker run --network ethereum_home_rpc_net --rm --env-file ".env.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
 else
     docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" -e "PRIVATE_KEY=$PRIVATE_KEY" ethereum-send $@
 fi
diff --git a/src/test-services/sidePrefund/run.sh b/src/test-services/sidePrefund/run.sh
index 3955564..c63a220 100755
--- a/src/test-services/sidePrefund/run.sh
+++ b/src/test-services/sidePrefund/run.sh
@@ -12,7 +12,7 @@ echo "Using $TARGET_NETWORK network"
 docker build -t side-prefund . > /dev/null
 
 if [[ "$TARGET_NETWORK" == "development" ]]; then
-    docker run --network blockchain_side --rm --env-file ".env.$TARGET_NETWORK" side-prefund $@
+    docker run --network ethereum_side_rpc_net --rm --env-file ".env.$TARGET_NETWORK" side-prefund $@
 else
     docker run --rm --env-file ".env.$TARGET_NETWORK" --env-file "../.keys.$TARGET_NETWORK" side-prefund $@
 fi
diff --git a/tests/run.sh b/tests/run.sh
index c0ca1b2..35799b7 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -11,8 +11,8 @@ docker create --name tests --env-file ./tests/.env tests $@
 
 echo "Connecting tests container to test networks"
 docker network connect binance_net tests
-docker network connect blockchain_home tests
-docker network connect blockchain_side tests
+docker network connect ethereum_home_rpc_net tests
+docker network connect ethereum_side_rpc_net tests
 docker network connect validator1_test_network tests
 docker network connect validator2_test_network tests
 docker network connect validator3_test_network tests

From ebf5e61821ed31e435fe5035020cc9b2f45c7764 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 24 Nov 2019 18:18:47 +0300
Subject: [PATCH 113/129] Updated contracts to suuport managment of signatures
 in side chain

---
 src/deploy/deploy-home/.solhint.json          |   3 +
 .../deploy-home/contracts/BasicBridge.sol     | 189 +++++++
 src/deploy/deploy-home/contracts/Bridge.sol   | 468 +-----------------
 .../deploy-home/contracts/Government.sol      | 126 +++++
 .../deploy-home/contracts/MessageDecoder.sol  |  39 ++
 .../deploy-home/contracts/MessageHandler.sol  | 135 +++++
 src/deploy/deploy-side/.solhint.json          |   3 +
 .../contracts/SignedMessageStorage.sol        |  39 +-
 .../deploy-side/contracts/SignupStorage.sol   |  12 +-
 9 files changed, 556 insertions(+), 458 deletions(-)
 create mode 100644 src/deploy/deploy-home/.solhint.json
 create mode 100644 src/deploy/deploy-home/contracts/BasicBridge.sol
 create mode 100644 src/deploy/deploy-home/contracts/Government.sol
 create mode 100644 src/deploy/deploy-home/contracts/MessageDecoder.sol
 create mode 100644 src/deploy/deploy-home/contracts/MessageHandler.sol
 create mode 100644 src/deploy/deploy-side/.solhint.json

diff --git a/src/deploy/deploy-home/.solhint.json b/src/deploy/deploy-home/.solhint.json
new file mode 100644
index 0000000..d7c3de9
--- /dev/null
+++ b/src/deploy/deploy-home/.solhint.json
@@ -0,0 +1,3 @@
+{
+  "extends": "solhint:default"
+}
diff --git a/src/deploy/deploy-home/contracts/BasicBridge.sol b/src/deploy/deploy-home/contracts/BasicBridge.sol
new file mode 100644
index 0000000..fa8bcf8
--- /dev/null
+++ b/src/deploy/deploy-home/contracts/BasicBridge.sol
@@ -0,0 +1,189 @@
+pragma solidity ^0.5.0;
+
+import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
+
+contract BasicBridge {
+    uint constant UPPER_BOUND = uint(-1);
+
+    event EpochEnd(uint indexed epoch);
+    event EpochClose(uint indexed epoch);
+    event ForceSign();
+    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);
+    event NewEpochCancelled(uint indexed epoch);
+    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);
+    event EpochStart(uint indexed epoch, uint x, uint y);
+
+    struct State {
+        address[] validators;
+        uint threshold;
+        uint rangeSize;
+        uint startBlock;
+        uint endBlock;
+        uint nonce;
+        uint x;
+        uint y;
+        bool closeEpoch;
+    }
+
+    enum Status {
+        READY, // bridge is in ready to perform operations
+        CLOSING_EPOCH, // generating transaction for blocking binance side of the bridge
+        VOTING, // voting for changing in next epoch, but still ready
+        KEYGEN, //keygen, can be cancelled
+        FUNDS_TRANSFER // funds transfer, cannot be cancelled
+    }
+
+    mapping(uint => State) states;
+
+    Status public status;
+
+    uint public epoch;
+    uint public nextEpoch;
+
+    uint minTxLimit;
+    uint maxTxLimit;
+
+    IERC20 public tokenContract;
+
+    modifier ready {
+        require(status == Status.READY, "Not in ready state");
+        _;
+    }
+
+    modifier closingEpoch {
+        require(status == Status.CLOSING_EPOCH, "Not in closing epoch state");
+        _;
+    }
+
+    modifier readyOrClosing {
+        require(status == Status.READY || status == Status.CLOSING_EPOCH, "Not in ready or closing epoch state");
+        _;
+    }
+
+    modifier voting {
+        require(status == Status.VOTING, "Not in voting state");
+        _;
+    }
+
+    modifier readyOrVoting {
+        require(status == Status.READY || status == Status.VOTING, "Not in ready or voting state");
+        _;
+    }
+
+    modifier keygen {
+        require(status == Status.KEYGEN, "Not in keygen state");
+        _;
+    }
+
+    modifier fundsTransfer {
+        require(status == Status.FUNDS_TRANSFER, "Not in funds transfer state");
+        _;
+    }
+
+    modifier currentValidator {
+        require(getPartyId() != 0, "Not a current validator");
+        _;
+    }
+
+    function getParties() view public returns (uint) {
+        return getParties(epoch);
+    }
+
+    function getNextParties() view public returns (uint) {
+        return getParties(nextEpoch);
+    }
+
+    function getParties(uint _epoch) view public returns (uint) {
+        return states[_epoch].validators.length;
+    }
+
+    function getThreshold() view public returns (uint) {
+        return getThreshold(epoch);
+    }
+
+    function getNextThreshold() view public returns (uint) {
+        return getThreshold(nextEpoch);
+    }
+
+    function getThreshold(uint _epoch) view public returns (uint) {
+        return states[_epoch].threshold;
+    }
+
+    function getStartBlock() view public returns (uint) {
+        return getStartBlock(epoch);
+    }
+
+    function getStartBlock(uint _epoch) view public returns (uint) {
+        return states[_epoch].startBlock;
+    }
+
+    function getRangeSize() view public returns (uint) {
+        return getRangeSize(epoch);
+    }
+
+    function getNextRangeSize() view public returns (uint) {
+        return getRangeSize(nextEpoch);
+    }
+
+    function getRangeSize(uint _epoch) view public returns (uint) {
+        return states[_epoch].rangeSize;
+    }
+
+    function getNonce() view public returns (uint) {
+        return getNonce(epoch);
+    }
+
+    function getNonce(uint _epoch) view public returns (uint) {
+        return states[_epoch].nonce;
+    }
+
+    function getX() view public returns (uint) {
+        return states[epoch].x;
+    }
+
+    function getY() view public returns (uint) {
+        return states[epoch].y;
+    }
+
+    function getCloseEpoch() view public returns (bool) {
+        return getCloseEpoch(epoch);
+    }
+
+    function getNextCloseEpoch() view public returns (bool) {
+        return getCloseEpoch(nextEpoch);
+    }
+
+    function getCloseEpoch(uint _epoch) view public returns (bool) {
+        return states[_epoch].closeEpoch;
+    }
+
+    function getPartyId() view public returns (uint) {
+        address[] memory validators = getValidators();
+        for (uint i = 0; i < getParties(); i++) {
+            if (validators[i] == msg.sender)
+                return i + 1;
+        }
+        return 0;
+    }
+
+    function getNextPartyId(address a) view public returns (uint) {
+        address[] memory validators = getNextValidators();
+        for (uint i = 0; i < getNextParties(); i++) {
+            if (validators[i] == a)
+                return i + 1;
+        }
+        return 0;
+    }
+
+    function getValidators() view public returns (address[] memory) {
+        return getValidators(epoch);
+    }
+
+    function getNextValidators() view public returns (address[] memory) {
+        return getValidators(nextEpoch);
+    }
+
+    function getValidators(uint _epoch) view public returns (address[] memory) {
+        return states[_epoch].validators;
+    }
+}
diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index 8be1986..3b202b3 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -1,70 +1,21 @@
 pragma solidity ^0.5.0;
 
 import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
+import "./MessageHandler.sol";
 
-contract Bridge {
+contract Bridge is MessageHandler {
     event ExchangeRequest(uint value, uint nonce);
-    event EpochEnd(uint indexed epoch);
-    event EpochClose(uint indexed epoch);
-    event ForceSign();
-    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);
-    event NewEpochCancelled(uint indexed epoch);
-    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);
-    event EpochStart(uint indexed epoch, uint x, uint y);
 
-    struct State {
-        address[] validators;
-        uint threshold;
-        uint rangeSize;
-        uint startBlock;
-        uint endBlock;
-        uint nonce;
-        uint x;
-        uint y;
-        bool closeEpoch;
-    }
+    mapping(bytes32 => bool) usedExchangeRanges;
 
-    enum Status {
-        READY, // bridge is in ready to perform operations
-        CLOSING_EPOCH, // generating transaction for blocking binance side of the bridge
-        VOTING, // voting for changing in next epoch, but still ready
-        KEYGEN, //keygen, can be cancelled
-        FUNDS_TRANSFER // funds transfer, cannot be cancelled
-    }
-
-    enum Vote {
-        CONFIRM_KEYGEN,
-        CONFIRM_FUNDS_TRANSFER,
-        CONFIRM_CLOSE_EPOCH,
-        START_VOTING,
-        ADD_VALIDATOR,
-        REMOVE_VALIDATOR,
-        CHANGE_THRESHOLD,
-        CHANGE_RANGE_SIZE,
-        CHANGE_CLOSE_EPOCH,
-        START_KEYGEN,
-        CANCEL_KEYGEN,
-        TRANSFER
-    }
-
-    mapping(uint => State) states;
-
-    mapping(bytes32 => uint) public dbTransferCount;
-    mapping(bytes32 => bool) public dbTransfer;
-    mapping(bytes32 => uint) public votesCount;
-    mapping(bytes32 => bool) public votes;
-    mapping(bytes32 => bool) public usedRange;
-    mapping(bytes32 => bool) public handledTx;
-
-    Status public status;
-
-    uint public epoch;
-    uint public nextEpoch;
-
-    uint minTxLimit;
-    uint maxTxLimit;
-
-    constructor(uint threshold, address[] memory validators, address _tokenContract, uint[2] memory limits, uint rangeSize, bool closeEpoch) public {
+    constructor(
+        uint threshold,
+        address[] memory validators,
+        address _tokenContract,
+        uint[2] memory limits,
+        uint rangeSize,
+        bool closeEpoch
+    ) public {
         require(validators.length > 0);
         require(threshold <= validators.length);
 
@@ -79,12 +30,12 @@ contract Bridge {
             threshold : threshold,
             rangeSize : rangeSize,
             startBlock : 0,
-            endBlock : uint(- 1),
-            nonce : uint(- 1),
+            endBlock : UPPER_BOUND,
+            nonce : UPPER_BOUND,
             x : 0,
             y : 0,
             closeEpoch : closeEpoch
-            });
+        });
 
         minTxLimit = limits[0];
         maxTxLimit = limits[1];
@@ -92,403 +43,16 @@ contract Bridge {
         emit NewEpoch(0, 1);
     }
 
-    IERC20 public tokenContract;
-
-    modifier ready {
-        require(status == Status.READY, "Not in ready state");
-        _;
-    }
-
-    modifier closingEpoch {
-        require(status == Status.CLOSING_EPOCH, "Not in closing epoch state");
-        _;
-    }
-
-    modifier readyOrClosing {
-        require(status == Status.READY || status == Status.CLOSING_EPOCH, "Not in ready or closing epoch state");
-        _;
-    }
-
-    modifier voting {
-        require(status == Status.VOTING, "Not in voting state");
-        _;
-    }
-
-    modifier readyOrVoting {
-        require(status == Status.READY || status == Status.VOTING, "Not in ready or voting state");
-        _;
-    }
-
-    modifier keygen {
-        require(status == Status.KEYGEN, "Not in keygen state");
-        _;
-    }
-
-    modifier fundsTransfer {
-        require(status == Status.FUNDS_TRANSFER, "Not in funds transfer state");
-        _;
-    }
-
-    modifier currentValidator {
-        require(getPartyId() != 0, "Not a current validator");
-        _;
-    }
-
     function exchange(uint value) public ready {
         require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);
 
         uint txRange = (block.number - getStartBlock()) / getRangeSize();
-        if (!usedRange[keccak256(abi.encodePacked(txRange, epoch))]) {
-            usedRange[keccak256(abi.encodePacked(txRange, epoch))] = true;
+        if (!usedExchangeRanges[keccak256(abi.encodePacked(txRange, epoch))]) {
+            usedExchangeRanges[keccak256(abi.encodePacked(txRange, epoch))] = true;
             states[epoch].nonce++;
         }
 
         tokenContract.transferFrom(msg.sender, address(this), value);
         emit ExchangeRequest(value, getNonce());
     }
-
-    function transfer(bytes memory message, bytes memory signatures) public {
-        require(message.length == 116, "Incorrect message length");
-        require(signatures.length % 65 == 0, "Incorrect signatures length");
-
-        uint msgEpoch;
-        bytes32 msgId;
-        address msgTo;
-        uint msgValue;
-
-        assembly {
-            msgEpoch := mload(add(message, 32))
-            msgId := mload(add(message, 64))
-            msgTo := mload(add(message, 84))
-            msgValue := mload(add(message, 116))
-        }
-
-        require(msgEpoch <= epoch, "Invalid epoch number");
-        require(!handledTx[msgId], "Tx was already handled");
-        handledTx[msgId] = true;
-
-        address[] memory msgValidators = getValidatorsInEpoch(msgEpoch);
-
-        require(signatures.length / 65 >= getThreshold(msgEpoch), "Not enough signatures");
-
-        bytes32 msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n116", message));
-
-        bytes32 r;
-        bytes32 s;
-        uint8 v;
-
-        for (uint i = 0; i < signatures.length / 65; i++) {
-            uint offset = i * 65;
-
-            assembly {
-                r := mload(add(add(signatures,32),offset))
-                s := mload(add(add(signatures,64),offset))
-                v := byte(0, mload(add(add(signatures,96),offset)))
-            }
-
-            address signer = ecrecover(msgHash, v, r, s);
-            uint j;
-            for (j = 0; j < msgValidators.length; j++) {
-                if (msgValidators[j] == signer) {
-                    delete msgValidators[j];
-                    break;
-                }
-            }
-            require(j != msgValidators.length);
-        }
-        if (tokenContract.balanceOf(address(this)) >= msgValue) {
-            tokenContract.transfer(msgTo, msgValue);
-        } else {
-            tokenContract.approve(msgTo, msgValue);
-        }
-    }
-
-    function confirmKeygen(uint x, uint y) public keygen {
-        require(getNextPartyId(msg.sender) != 0, "Not a next validator");
-
-        if (tryConfirm(Vote.CONFIRM_KEYGEN, x, y)) {
-            states[nextEpoch].x = x;
-            states[nextEpoch].y = y;
-            if (nextEpoch == 1) {
-                status = Status.READY;
-                states[nextEpoch].startBlock = block.number;
-                states[nextEpoch].nonce = uint(- 1);
-                epoch = nextEpoch;
-                emit EpochStart(epoch, x, y);
-            }
-            else {
-                status = Status.FUNDS_TRANSFER;
-                emit NewFundsTransfer(epoch, nextEpoch);
-            }
-        }
-    }
-
-    function confirmFundsTransfer() public fundsTransfer currentValidator {
-        require(epoch > 0, "First epoch does not need funds transfer");
-
-        if (tryConfirm(Vote.CONFIRM_FUNDS_TRANSFER)) {
-            status = Status.READY;
-            states[nextEpoch].startBlock = block.number;
-            states[nextEpoch].nonce = uint(- 1);
-            epoch = nextEpoch;
-            emit EpochStart(epoch, getX(), getY());
-        }
-    }
-
-    function confirmCloseEpoch() public closingEpoch currentValidator {
-        if (tryConfirm(Vote.CONFIRM_CLOSE_EPOCH)) {
-            status = Status.VOTING;
-            emit EpochEnd(epoch);
-        }
-    }
-
-    function getParties() view public returns (uint) {
-        return getParties(epoch);
-    }
-
-    function getNextParties() view public returns (uint) {
-        return getParties(nextEpoch);
-    }
-
-    function getParties(uint _epoch) view public returns (uint) {
-        return states[_epoch].validators.length;
-    }
-
-    function getThreshold() view public returns (uint) {
-        return getThreshold(epoch);
-    }
-
-    function getNextThreshold() view public returns (uint) {
-        return getThreshold(nextEpoch);
-    }
-
-    function getThreshold(uint _epoch) view public returns (uint) {
-        return states[_epoch].threshold;
-    }
-
-    function getStartBlock() view public returns (uint) {
-        return getStartBlock(epoch);
-    }
-
-    function getStartBlock(uint _epoch) view public returns (uint) {
-        return states[_epoch].startBlock;
-    }
-
-    function getRangeSize() view public returns (uint) {
-        return getRangeSize(epoch);
-    }
-
-    function getNextRangeSize() view public returns (uint) {
-        return getRangeSize(nextEpoch);
-    }
-
-    function getRangeSize(uint _epoch) view public returns (uint) {
-        return states[_epoch].rangeSize;
-    }
-
-    function getNonce() view public returns (uint) {
-        return getNonce(epoch);
-    }
-
-    function getNonce(uint _epoch) view public returns (uint) {
-        return states[_epoch].nonce;
-    }
-
-    function getX() view public returns (uint) {
-        return states[epoch].x;
-    }
-
-    function getY() view public returns (uint) {
-        return states[epoch].y;
-    }
-
-    function getCloseEpoch() view public returns (bool) {
-        return getCloseEpoch(epoch);
-    }
-
-    function getNextCloseEpoch() view public returns (bool) {
-        return getCloseEpoch(nextEpoch);
-    }
-
-    function getCloseEpoch(uint _epoch) view public returns (bool) {
-        return states[_epoch].closeEpoch;
-    }
-
-    function getPartyId() view public returns (uint) {
-        address[] memory validators = getValidators();
-        for (uint i = 0; i < getParties(); i++) {
-            if (validators[i] == msg.sender)
-                return i + 1;
-        }
-        return 0;
-    }
-
-    function getNextPartyId(address a) view public returns (uint) {
-        address[] memory validators = getNextValidators();
-        for (uint i = 0; i < getNextParties(); i++) {
-            if (validators[i] == a)
-                return i + 1;
-        }
-        return 0;
-    }
-
-    function getValidators() view public returns (address[] memory) {
-        return getValidatorsInEpoch(epoch);
-    }
-
-    function getNextValidators() view public returns (address[] memory) {
-        return getValidatorsInEpoch(nextEpoch);
-    }
-
-    function getValidatorsInEpoch(uint _epoch) view public returns (address[] memory) {
-        return states[_epoch].validators;
-    }
-
-    function startVoting() public readyOrVoting currentValidator {
-        if (tryVote(Vote.START_VOTING, epoch)) {
-            nextEpoch++;
-            states[nextEpoch].endBlock = block.number;
-            states[nextEpoch].threshold = getThreshold();
-            states[nextEpoch].validators = getValidators();
-            states[nextEpoch].rangeSize = getRangeSize();
-            states[nextEpoch].closeEpoch = getCloseEpoch();
-
-            if (status == Status.READY && getCloseEpoch()) {
-                status = Status.CLOSING_EPOCH;
-                emit ForceSign();
-                emit EpochClose(epoch);
-            } else {
-                status = Status.VOTING;
-                emit ForceSign();
-                emit EpochEnd(epoch);
-            }
-        }
-    }
-
-    function voteAddValidator(address validator) public voting currentValidator {
-        require(getNextPartyId(validator) == 0, "Already a validator");
-
-        if (tryVote(Vote.ADD_VALIDATOR, validator)) {
-            states[nextEpoch].validators.push(validator);
-        }
-    }
-
-    function voteRemoveValidator(address validator) public voting currentValidator {
-        require(getNextPartyId(validator) != 0, "Already not a validator");
-
-        if (tryVote(Vote.REMOVE_VALIDATOR, validator)) {
-            _removeValidator(validator);
-        }
-    }
-
-    function _removeValidator(address validator) private {
-        for (uint i = 0; i < getNextParties() - 1; i++) {
-            if (states[nextEpoch].validators[i] == validator) {
-                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];
-                break;
-            }
-        }
-        delete states[nextEpoch].validators[getNextParties() - 1];
-        states[nextEpoch].validators.length--;
-    }
-
-    function voteChangeThreshold(uint threshold) public voting currentValidator {
-        require(threshold > 0 && threshold <= getParties(), "Invalid threshold value");
-
-        if (tryVote(Vote.CHANGE_THRESHOLD, threshold)) {
-            states[nextEpoch].threshold = threshold;
-        }
-    }
-
-    function voteChangeRangeSize(uint rangeSize) public voting currentValidator {
-        if (tryVote(Vote.CHANGE_RANGE_SIZE, rangeSize)) {
-            states[nextEpoch].rangeSize = rangeSize;
-        }
-    }
-
-    function voteChangeCloseEpoch(bool closeEpoch) public voting currentValidator {
-        if (tryVote(Vote.CHANGE_CLOSE_EPOCH, closeEpoch ? 1 : 0)) {
-            states[nextEpoch].closeEpoch = closeEpoch;
-        }
-    }
-
-    function voteStartKeygen() public voting currentValidator {
-        require(getNextThreshold() <= getNextParties(), "Invalid threshold number");
-
-        if (tryVote(Vote.START_KEYGEN)) {
-            status = Status.KEYGEN;
-
-            emit NewEpoch(epoch, nextEpoch);
-        }
-    }
-
-    function voteCancelKeygen() public keygen currentValidator {
-        if (tryVote(Vote.CANCEL_KEYGEN)) {
-            status = Status.VOTING;
-
-            emit NewEpochCancelled(nextEpoch);
-        }
-    }
-
-    function tryVote(Vote voteType) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));
-        return putVote(vote);
-    }
-
-    function tryVote(Vote voteType, address addr) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, addr));
-        return putVote(vote);
-    }
-
-    function tryVote(Vote voteType, uint num) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, num));
-        return putVote(vote);
-    }
-
-    function tryVote(Vote voteType, bytes32 hash, address to, uint value) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, hash, to, value));
-        return putVote(vote);
-    }
-
-    function tryConfirm(Vote voteType) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch));
-        return putConfirm(vote);
-    }
-
-    function tryConfirm(Vote voteType, uint x, uint y) private returns (bool) {
-        bytes32 vote = keccak256(abi.encodePacked(voteType, nextEpoch, x, y));
-        return putConfirm(vote);
-    }
-
-    function putVote(bytes32 vote) private returns (bool) {
-        bytes32 personalVote = personalizeVote(vote);
-        require(!votes[personalVote], "Voted already");
-
-        votes[personalVote] = true;
-        if (votesCount[vote] + 1 == getThreshold()) {
-            votesCount[vote] = 2 ** 255;
-            return true;
-        } else {
-            votesCount[vote]++;
-            return false;
-        }
-    }
-
-    function putConfirm(bytes32 vote) private returns (bool) {
-        bytes32 personalVote = personalizeVote(vote);
-        require(!votes[personalVote], "Confirmed already");
-
-        votes[personalVote] = true;
-        if (votesCount[vote] + 1 == getNextThreshold()) {
-            votesCount[vote] = 2 ** 255;
-            return true;
-        } else {
-            votesCount[vote]++;
-            return false;
-        }
-    }
-
-    function personalizeVote(bytes32 vote) private view returns (bytes32) {
-        return keccak256(abi.encodePacked(vote, msg.sender));
-    }
 }
diff --git a/src/deploy/deploy-home/contracts/Government.sol b/src/deploy/deploy-home/contracts/Government.sol
new file mode 100644
index 0000000..0696a3c
--- /dev/null
+++ b/src/deploy/deploy-home/contracts/Government.sol
@@ -0,0 +1,126 @@
+pragma solidity ^0.5.0;
+
+import "./BasicBridge.sol";
+
+contract Government is BasicBridge {
+    enum Action {
+        CONFIRM_KEYGEN,
+        CONFIRM_FUNDS_TRANSFER,
+        CONFIRM_CLOSE_EPOCH,
+        VOTE_START_VOTING,
+        VOTE_ADD_VALIDATOR,
+        VOTE_REMOVE_VALIDATOR,
+        VOTE_CHANGE_THRESHOLD,
+        VOTE_CHANGE_RANGE_SIZE,
+        VOTE_CHANGE_CLOSE_EPOCH,
+        VOTE_START_KEYGEN,
+        VOTE_CANCEL_KEYGEN,
+        TRANSFER
+    }
+
+    function _confirmKeygen(uint x, uint y) internal keygen {
+        states[nextEpoch].x = x;
+        states[nextEpoch].y = y;
+        states[nextEpoch].nonce = UPPER_BOUND;
+        if (nextEpoch == 1) {
+            status = Status.READY;
+            states[nextEpoch].startBlock = block.number;
+            epoch = nextEpoch;
+            emit EpochStart(epoch, x, y);
+        }
+        else {
+            status = Status.FUNDS_TRANSFER;
+            emit NewFundsTransfer(epoch, nextEpoch);
+        }
+    }
+
+    function _confirmFundsTransfer() internal fundsTransfer {
+        require(epoch > 0, "First epoch does not need funds transfer");
+
+        status = Status.READY;
+        states[nextEpoch].startBlock = block.number;
+        epoch = nextEpoch;
+        emit EpochStart(epoch, getX(), getY());
+    }
+
+    function _confirmCloseEpoch() internal closingEpoch {
+        status = Status.VOTING;
+        emit EpochEnd(epoch);
+    }
+
+    function _startVoting() internal ready {
+        states[epoch].endBlock = block.number;
+        nextEpoch++;
+        states[nextEpoch].threshold = getThreshold();
+        states[nextEpoch].validators = getValidators();
+        states[nextEpoch].rangeSize = getRangeSize();
+        states[nextEpoch].closeEpoch = getCloseEpoch();
+
+        if (getCloseEpoch()) {
+            status = Status.CLOSING_EPOCH;
+            emit ForceSign();
+            emit EpochClose(epoch);
+        } else {
+            status = Status.VOTING;
+            emit ForceSign();
+            emit EpochEnd(epoch);
+        }
+    }
+
+    function _addValidator(address validator) internal voting {
+        require(getNextPartyId(validator) == 0, "Already a validator");
+
+        states[nextEpoch].validators.push(validator);
+    }
+
+    function _removeValidator(address validator) internal voting {
+        require(getNextPartyId(validator) != 0, "Already not a validator");
+
+        for (uint i = 0; i < getNextParties() - 1; i++) {
+            if (states[nextEpoch].validators[i] == validator) {
+                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];
+                break;
+            }
+        }
+        delete states[nextEpoch].validators[getNextParties() - 1];
+        states[nextEpoch].validators.length--;
+    }
+
+    function _changeThreshold(uint threshold) internal voting {
+        require(threshold > 0, "Invalid threshold value");
+
+        states[nextEpoch].threshold = threshold;
+    }
+
+    function _changeRangeSize(uint rangeSize) internal voting {
+        require(rangeSize > 0, "Invalid range size");
+
+        states[nextEpoch].rangeSize = rangeSize;
+    }
+
+    function _changeCloseEpoch(bool closeEpoch) internal voting {
+        states[nextEpoch].closeEpoch = closeEpoch;
+    }
+
+    function _startKeygen() internal voting {
+        require(getNextThreshold() <= getNextParties(), "Invalid threshold number");
+
+        status = Status.KEYGEN;
+
+        emit NewEpoch(epoch, nextEpoch);
+    }
+
+    function _cancelKeygen() internal keygen {
+        status = Status.VOTING;
+
+        emit NewEpochCancelled(nextEpoch);
+    }
+
+    function _transfer(address to, uint value) internal {
+        if (tokenContract.balanceOf(address(this)) >= value) {
+            tokenContract.transfer(to, value);
+        } else {
+            tokenContract.approve(to, value);
+        }
+    }
+}
diff --git a/src/deploy/deploy-home/contracts/MessageDecoder.sol b/src/deploy/deploy-home/contracts/MessageDecoder.sol
new file mode 100644
index 0000000..12dd463
--- /dev/null
+++ b/src/deploy/deploy-home/contracts/MessageDecoder.sol
@@ -0,0 +1,39 @@
+pragma solidity ^0.5.0;
+
+
+contract MessageDecoder {
+    // [0] - action type
+    // [1..32] - epoch
+    // [33..] - payload
+    function _decodeNumber(bytes memory message) pure internal returns (uint a) {
+        assembly {
+            a := mload(add(message, 65))
+        }
+    }
+
+    function _decodeBoolean(bytes memory message) pure internal returns (bool a) {
+        assembly {
+            a := mload(add(message, 34))
+        }
+    }
+
+    function _decodeAddress(bytes memory message) pure internal returns (address a) {
+        assembly {
+            a := mload(add(message, 53))
+        }
+    }
+
+    function _decodeKeygen(bytes memory message) pure internal returns (uint a, uint b) {
+        assembly {
+            a := mload(add(message, 65))
+            b := mload(add(message, 97))
+        }
+    }
+
+    function _decodeTransfer(bytes memory message) pure internal returns (address a, uint b) {
+        assembly {
+            a := mload(add(message, 85))
+            b := mload(add(message, 117))
+        }
+    }
+}
diff --git a/src/deploy/deploy-home/contracts/MessageHandler.sol b/src/deploy/deploy-home/contracts/MessageHandler.sol
new file mode 100644
index 0000000..7a8676d
--- /dev/null
+++ b/src/deploy/deploy-home/contracts/MessageHandler.sol
@@ -0,0 +1,135 @@
+pragma solidity ^0.5.0;
+
+import "./Government.sol";
+import "./MessageDecoder.sol";
+
+contract MessageHandler is Government, MessageDecoder {
+    uint constant SIGNATURE_SIZE = 65;
+
+    mapping(bytes32 => bool) public handledMessages;
+
+    function applyMessage(bytes memory message, bytes memory signatures) public {
+        (bytes32 msgHash, uint msgEpoch) = checkSignedMessage(message, signatures);
+        handledMessages[msgHash] = true;
+
+        Action msgAction = Action(uint8(message[0]));
+
+        if (msgAction == Action.CONFIRM_KEYGEN || msgAction == Action.VOTE_CANCEL_KEYGEN) {
+            require(msgEpoch == nextEpoch, "Incorrect message epoch");
+        } else if (msgAction == Action.TRANSFER) {
+            require(msgEpoch <= epoch, "Incorrect message epoch");
+        } else {
+            require(msgEpoch == epoch, "Incorrect message epoch");
+        }
+
+        if (msgAction == Action.CONFIRM_KEYGEN) {
+            require(message.length == 97, "Incorrect message length");
+            (uint x, uint y) = _decodeKeygen(message);
+            _confirmKeygen(x, y);
+        } else if (msgAction == Action.CONFIRM_FUNDS_TRANSFER) {
+            require(message.length == 33, "Incorrect message length");
+            _confirmFundsTransfer();
+        } else if (msgAction == Action.CONFIRM_CLOSE_EPOCH) {
+            require(message.length == 33, "Incorrect message length");
+            _confirmCloseEpoch();
+        } else if (msgAction == Action.VOTE_START_VOTING) {
+            require(message.length == 33, "Incorrect message length");
+            _startVoting();
+        } else if (msgAction == Action.VOTE_ADD_VALIDATOR) {
+            require(message.length == 53, "Incorrect message length");
+            address validator = _decodeAddress(message);
+            _addValidator(validator);
+        } else if (msgAction == Action.VOTE_REMOVE_VALIDATOR) {
+            require(message.length == 53, "Incorrect message length");
+            address validator = _decodeAddress(message);
+            _removeValidator(validator);
+        } else if (msgAction == Action.VOTE_CHANGE_THRESHOLD) {
+            require(message.length == 65, "Incorrect message length");
+            uint threshold = _decodeNumber(message);
+            _changeThreshold(threshold);
+        } else if (msgAction == Action.VOTE_CHANGE_RANGE_SIZE) {
+            require(message.length == 65, "Incorrect message length");
+            uint rangeSize = _decodeNumber(message);
+            _changeRangeSize(rangeSize);
+        } else if (msgAction == Action.VOTE_CHANGE_CLOSE_EPOCH) {
+            require(message.length == 34, "Incorrect message length");
+            bool closeEpoch = _decodeBoolean(message);
+            _changeCloseEpoch(closeEpoch);
+        } else if (msgAction == Action.VOTE_START_KEYGEN) {
+            require(message.length == 33, "Incorrect message length");
+            _startKeygen();
+        } else if (msgAction == Action.VOTE_CANCEL_KEYGEN) {
+            require(message.length == 33, "Incorrect message length");
+            _cancelKeygen();
+        } else if (msgAction == Action.TRANSFER) {
+            require(message.length == 117, "Incorrect message length");
+            (address to, uint value) = _decodeTransfer(message);
+            _transfer(to, value);
+            // 0b
+            // 0000000000000000000000000000000000000000000000000000000000000001
+            // 73824c9dc9318568f803a7fd6a147d67f0c1c328f0ed955456ed7357e6b470f8
+            // ad6c8127143032d843a260c5d379d8d9b3d51f15
+            // 0000000000000000000000000000000000000000000000004563918244f40000
+        } else {
+            revert("Unknown message action");
+        }
+    }
+
+    function checkSignedMessage(bytes memory message, bytes memory signatures) view public returns (bytes32, uint) {
+        require(signatures.length % SIGNATURE_SIZE == 0, "Incorrect signatures length");
+
+        bytes32 msgHash;
+        if (message.length == 33) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n33", message));
+        } else if (message.length == 34) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n34", message));
+        } else if (message.length == 53) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n53", message));
+        } else if (message.length == 65) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n65", message));
+        } else if (message.length == 97) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n97", message));
+        } else if (message.length == 117) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n117", message));
+        } else {
+            revert("Incorrect message length");
+        }
+        require(!handledMessages[msgHash], "Tx was already handled");
+
+        uint msgEpoch;
+        assembly {
+            msgEpoch := mload(add(message, 33))
+        }
+        require(msgEpoch <= nextEpoch, "Invalid epoch number");
+
+        uint signaturesNum = signatures.length / SIGNATURE_SIZE;
+        require(signaturesNum >= getThreshold(msgEpoch), "Not enough signatures");
+
+        address[] memory possibleValidators = getValidators(msgEpoch);
+
+        bytes32 r;
+        bytes32 s;
+        uint8 v;
+
+        for (uint i = 0; i < signaturesNum; i++) {
+            uint offset = i * SIGNATURE_SIZE;
+
+            assembly {
+                r := mload(add(add(signatures, 32), offset))
+                s := mload(add(add(signatures, 64), offset))
+                v := byte(0, mload(add(add(signatures, 96), offset)))
+            }
+
+            address signer = ecrecover(msgHash, v, r, s);
+            uint j;
+            for (j = 0; j < possibleValidators.length; j++) {
+                if (possibleValidators[j] == signer) {
+                    delete possibleValidators[j];
+                    break;
+                }
+            }
+            require(j != possibleValidators.length, "Not a validator signature");
+        }
+        return (msgHash, msgEpoch);
+    }
+}
diff --git a/src/deploy/deploy-side/.solhint.json b/src/deploy/deploy-side/.solhint.json
new file mode 100644
index 0000000..d7c3de9
--- /dev/null
+++ b/src/deploy/deploy-side/.solhint.json
@@ -0,0 +1,3 @@
+{
+  "extends": "solhint:default"
+}
diff --git a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
index bbbb675..037e670 100644
--- a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
@@ -1,18 +1,47 @@
 pragma solidity ^0.5.0;
 
 contract SignedMessageStorage {
+    event NewMessage(bytes32 msgHash);
+
     struct SignedMessage {
         bytes message;
         mapping(address => bytes) signatures;
     }
 
-    mapping(bytes32 => SignedMessage) signedMessages;
-
+    mapping(bytes32 => SignedMessage) public signedMessages;
+    // 0xc17c720a
+    // 0000000000000000000000000000000000000000000000000000000000000040
+    // 00000000000000000000000000000000000000000000000000000000000000e0
+    // 0000000000000000000000000000000000000000000000000000000000000061
+    // 00
+    // 0000000000000000000000000000000000000000000000000000000000000001
+    // 7681bd587db2576708db7085c2704c84e19db65f5b8a90897866c411a4002f86
+    // 6c66695a8595b4b41f779877b2a177c79969bfd627bd691bcd14f27eaab7ad3c
+    // 00000000000000000000000000000000000000000000000000000000000000
+    // 0000000000000000000000000000000000000000000000000000000000000041
+    // 82b4f5c4211ca2c5a0a5ec8d5476da5d537e282b852108bcfb006058b942d6a1
+    // 51ca56bfe41529215fe1f6b8a56b69ecb1357d588bfb38a9f7bd858df82d8038
+    // 1c00000000000000000000000000000000000000000000000000000000000000
     function addSignature(bytes memory message, bytes memory rsv) public {
-        require(message.length == 116, "Incorrect message length");
+        require(message.length > 0, "Incorrect message length");
         require(rsv.length == 65, "Incorrect signature length");
 
-        bytes32 msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n116", message));
+        bytes32 msgHash;
+        if (message.length == 33) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n33", message));
+        } else if (message.length == 34) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n34", message));
+        } else if (message.length == 53) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n53", message));
+        } else if (message.length == 65) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n65", message));
+        } else if (message.length == 97) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n97", message));
+        } else if (message.length == 117) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n117", message));
+        } else {
+            revert("Incorrect message length");
+        }
 
         bytes32 r;
         bytes32 s;
@@ -28,6 +57,8 @@ contract SignedMessageStorage {
 
         if (signedMessages[msgHash].message.length == 0) {
             signedMessages[msgHash].message = message;
+
+            emit NewMessage(msgHash);
         }
         signedMessages[msgHash].signatures[msg.sender] = rsv;
     }
diff --git a/src/deploy/deploy-side/contracts/SignupStorage.sol b/src/deploy/deploy-side/contracts/SignupStorage.sol
index 4b932f2..7fe62fd 100644
--- a/src/deploy/deploy-side/contracts/SignupStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignupStorage.sol
@@ -10,7 +10,11 @@ contract SignupStorage {
         signups[hash][msg.sender] = ++signupsCount[hash];
     }
 
-    function getSignupNumber(bytes32 hash, address[] memory validators, address validator) view public returns (uint) {
+    function getSignupNumber(
+        bytes32 hash,
+        address[] memory validators,
+        address validator
+    ) view public returns (uint) {
         if (signups[hash][validator] == 0)
             return 0;
         uint id = 1;
@@ -22,7 +26,11 @@ contract SignupStorage {
         return id;
     }
 
-    function getSignupAddress(bytes32 hash, address[] memory validators, uint signupNumber) view public returns (address) {
+    function getSignupAddress(
+        bytes32 hash,
+        address[] memory validators,
+        uint signupNumber
+    ) view public returns (address) {
         for (uint i = 0; i < validators.length; i++) {
             if (getSignupNumber(hash, validators, validators[i]) == signupNumber) {
                 return validators[i];

From 15e31bec2a2c4f4b9c398f39b1488abb0806c66d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 24 Nov 2019 18:19:53 +0300
Subject: [PATCH 114/129] Fixed side propagation oracle

---
 src/ethereum-testnet/side-oracle/index.js | 35 ++++++++++++-----------
 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/src/ethereum-testnet/side-oracle/index.js b/src/ethereum-testnet/side-oracle/index.js
index f567bb7..d77be3f 100644
--- a/src/ethereum-testnet/side-oracle/index.js
+++ b/src/ethereum-testnet/side-oracle/index.js
@@ -8,10 +8,11 @@ const SIDE_MAX_FETCH_RANGE_SIZE = parseInt(process.env.SIDE_MAX_FETCH_RANGE_SIZE
 const bridgeAbi = [
   'function applyMessage(bytes message, bytes signatures)',
   'function getThreshold(uint epoch) view returns (uint)',
-  'function getValidatorsInEpoch(uint epoch) view returns (address[])'
+  'function getValidators(uint epoch) view returns (address[])'
 ]
 const sharedDbAbi = [
   'event NewMessage(bytes32 msgHash)',
+  'function signedMessages(bytes32 hash) view returns (bytes)',
   'function getSignatures(bytes32 msgHash, address[] validators) view returns (bytes)'
 ]
 
@@ -29,16 +30,21 @@ async function delay(ms) {
 
 async function handleNewMessage(event) {
   const { msgHash } = event.values
-  const message = (await sharedDb.signedMessages(msgHash))[0]
-  const epoch = parseInt(message.slice(30, 3).toString('hex'), 16)
+  const message = await sharedDb.signedMessages(msgHash)
+  const epoch = parseInt(message.slice(4, 68), 16)
   const [threshold, validators] = await Promise.all([
     bridge.getThreshold(epoch),
-    bridge.getValidatorsInEpoch(epoch)
+    bridge.getValidators(epoch)
   ])
 
   while (true) {
     const signatures = await sharedDb.getSignatures(msgHash, validators)
-    if (signatures.length / 65 >= threshold) {
+    if (signatures.length === 2) {
+      console.log('Skipping event')
+      break
+    }
+    if ((signatures.length - 2) / 130 >= threshold) {
+      console.log('Sending applyMessage request')
       const tx = await bridge.applyMessage(message, signatures, {
         gasLimit: 1000000,
         nonce
@@ -54,10 +60,9 @@ async function initialize() {
   await delay(5000)
   sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
   homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
-  bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeProvider)
-  sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideProvider)
-
   homeWallet = new ethers.Wallet(HOME_PRIVATE_KEY, homeProvider)
+  bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeWallet)
+  sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideProvider)
 
   nonce = await homeWallet.getTransactionCount()
 }
@@ -77,19 +82,15 @@ async function loop() {
     address: SIDE_SHARED_DB_ADDRESS,
     fromBlock: blockNumber,
     toBlock: endBlock,
-    topics: []
+    topics: [
+      sharedDb.interface.events.NewMessage.topic
+    ]
   }))
 
   for (let i = 0; i < bridgeEvents.length; i += 1) {
-    const event = bridge.interface.parseLog(bridgeEvents[i])
+    const event = sharedDb.interface.parseLog(bridgeEvents[i])
     console.log('Consumed event', event, bridgeEvents[i])
-    switch (event.name) {
-      case 'NewMessage':
-        await handleNewMessage(event)
-        break
-      default:
-        console.log('Unknown event %o', event)
-    }
+    await handleNewMessage(event)
   }
 
   blockNumber = endBlock + 1

From 4de478390b33463c5aa31780bfa12af869f95b68 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 24 Nov 2019 18:20:56 +0300
Subject: [PATCH 115/129] Updated oracle codebase to use signatures management
 contract

---
 src/oracle/proxy/contractsAbi.js   |   4 +-
 src/oracle/proxy/index.js          | 202 ++++++++++++++---------------
 src/oracle/tss-keygen/keygen.js    |  13 +-
 src/oracle/tss-keygen/package.json |   1 +
 src/oracle/tss-sign/signer.js      |  16 ++-
 5 files changed, 120 insertions(+), 116 deletions(-)

diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
index b9b7524..609f911 100644
--- a/src/oracle/proxy/contractsAbi.js
+++ b/src/oracle/proxy/contractsAbi.js
@@ -14,7 +14,6 @@ const bridgeAbi = [
   'function getNextThreshold() view returns (uint)',
   'function getValidators() view returns (address[])',
   'function getNextValidators() view returns (address[])',
-  'function getValidatorsInEpoch(uint _epoch) view returns (address[])',
   'function getCloseEpoch() view returns (bool)',
   'function getNextCloseEpoch() view returns (bool)',
   'function status() view returns (uint)',
@@ -29,8 +28,7 @@ const bridgeAbi = [
   'function voteAddValidator(address validator)',
   'function voteRemoveValidator(address validator)',
   'function voteChangeThreshold(uint threshold)',
-  'function voteChangeCloseEpoch(bool closeEpoch)',
-  'function transfer(bytes message, bytes signatures)'
+  'function voteChangeCloseEpoch(bool closeEpoch)'
 ]
 const sharedDbAbi = [
   'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index cff78bc..a529a10 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -13,13 +13,27 @@ const decode = require('./decode')
 const { createSender, waitForReceipt } = require('./sendTx')
 const logger = require('./logger')
 const { publicKeyToAddress, padZeros } = require('./crypto')
-const { delay } = require('./wait')
 
 const {
   HOME_RPC_URL, HOME_BRIDGE_ADDRESS, SIDE_RPC_URL, SIDE_SHARED_DB_ADDRESS, VALIDATOR_PRIVATE_KEY,
   HOME_TOKEN_ADDRESS, FOREIGN_URL, FOREIGN_ASSET
 } = process.env
 
+const Action = {
+  CONFIRM_KEYGEN: 0,
+  CONFIRM_FUNDS_TRANSFER: 1,
+  CONFIRM_CLOSE_EPOCH: 2,
+  VOTE_START_VOTING: 3,
+  VOTE_ADD_VALIDATOR: 4,
+  VOTE_REMOVE_VALIDATOR: 5,
+  VOTE_CHANGE_THRESHOLD: 6,
+  VOTE_CHANGE_RANGE_SIZE: 7,
+  VOTE_CHANGE_CLOSE_EPOCH: 8,
+  VOTE_START_KEYGEN: 9,
+  VOTE_CANCEL_KEYGEN: 10,
+  TRANSFER: 11
+}
+
 const homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
 const sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
 const homeWallet = new ethers.Wallet(VALIDATOR_PRIVATE_KEY, homeProvider)
@@ -35,9 +49,7 @@ const httpClient = axios.create({ baseURL: FOREIGN_URL })
 
 const lock = new AsyncLock()
 
-let homeValidatorNonce
 let sideValidatorNonce
-let homeSender
 let sideSender
 
 const app = express()
@@ -61,21 +73,6 @@ function sideSendQuery(query) {
   })
 }
 
-function homeSendQuery(query) {
-  return lock.acquire('home', async () => {
-    logger.debug('Sending home query')
-    const senderResponse = await homeSender({
-      data: query,
-      to: HOME_BRIDGE_ADDRESS,
-      nonce: homeValidatorNonce
-    })
-    if (senderResponse !== true) {
-      homeValidatorNonce += 1
-    }
-    return senderResponse
-  })
-}
-
 async function get(req, res) {
   logger.debug('Get call, %o', req.body.key)
   const round = req.body.key.second
@@ -173,112 +170,136 @@ async function signupSign(req, res) {
   logger.debug('SignupSign end')
 }
 
+function encodeParam(param) {
+  switch (typeof param) {
+    case 'string':
+      if (param.startsWith('0x')) {
+        return Buffer.from(param.slice(2), 'hex')
+      }
+      return Buffer.from(padZeros(param, 64), 'hex')
+    case 'number':
+      return Buffer.from(padZeros(new BN(param).toString(16), 64), 'hex')
+    case 'boolean':
+      return Buffer.from([param ? 1 : 0])
+    default:
+      return null
+  }
+}
+
+function buildMessage(type, ...params) {
+  logger.debug(`${type}, %o`, params)
+  return Buffer.concat([
+    Buffer.from([type]),
+    ...params.map(encodeParam)
+  ])
+}
+
+async function processMessage(message) {
+  const signature = await sideWallet.signMessage(message)
+  logger.debug('Adding signature to shared db contract')
+  const query = sharedDb.interface.functions.addSignature.encode([`0x${message.toString('hex')}`, signature])
+  await sideSendQuery(query)
+}
+
 async function confirmKeygen(req, res) {
   logger.debug('Confirm keygen call')
-  const { x, y } = req.body[5]
-  const query = bridge.interface.functions.confirmKeygen.encode([`0x${x}`, `0x${y}`])
-  await homeSendQuery(query)
+  const { x, y, epoch } = req.body
+  const message = buildMessage(Action.CONFIRM_KEYGEN, epoch, x, y)
+  await processMessage(message)
   res.send()
   logger.debug('Confirm keygen end')
 }
 
 async function confirmFundsTransfer(req, res) {
   logger.debug('Confirm funds transfer call')
-  const query = bridge.interface.functions.confirmFundsTransfer.encode([])
-  await homeSendQuery(query)
+  const { epoch } = req.body
+  const message = buildMessage(Action.CONFIRM_FUNDS_TRANSFER, epoch)
+  await processMessage(message)
   res.send()
   logger.debug('Confirm funds transfer end')
 }
 
 async function confirmCloseEpoch(req, res) {
   logger.debug('Confirm close epoch call')
-  const query = bridge.interface.functions.confirmCloseEpoch.encode([])
-  await homeSendQuery(query)
+  const { epoch } = req.body
+  const message = buildMessage(Action.CONFIRM_CLOSE_EPOCH, epoch)
+  await processMessage(message)
   res.send()
   logger.debug('Confirm close epoch end')
 }
 
-async function sendVote(query, req, res, waitFlag = false) {
-  try {
-    const sentQuery = await homeSendQuery(query)
-    let { txHash, gasLimit } = sentQuery
-    if (txHash) {
-      while (waitFlag) {
-        const { status, gasUsed } = await waitForReceipt(HOME_RPC_URL, txHash)
-        if (status === '0x1') {
-          logger.debug('Receipt status is OK')
-          break
-        }
-        if (gasLimit === gasUsed) {
-          logger.info('Sending vote failed due to out of gas revert, retrying with more gas')
-          const nextTx = await homeSendQuery(query)
-          txHash = nextTx.txHash
-          gasLimit = nextTx.gasLimit
-        } else {
-          logger.warn(`Vote tx was reverted, txHash ${txHash}`)
-          break
-        }
-      }
-    }
-    if (sentQuery) {
-      res.send('Voted\n')
-      logger.info('Voted successfully')
-    } else {
-      res.send('Failed\n')
-      logger.info('Failed to vote')
-    }
-  } catch (e) {
-    logger.debug(e)
-  }
-}
-
 async function voteStartVoting(req, res) {
   logger.info('Voting for starting new epoch voting process')
-  const query = bridge.interface.functions.startVoting.encode([])
-  await sendVote(query, req, res, true)
+  const epoch = boundX(await bridge.epoch())
+  const message = buildMessage(Action.VOTE_START_VOTING, epoch)
+  await processMessage(message)
+  res.send('Voted\n')
+  logger.info('Voted successfully')
 }
 
 async function voteStartKeygen(req, res) {
   logger.info('Voting for starting new epoch keygen')
-  const query = bridge.interface.functions.voteStartKeygen.encode([])
-  await sendVote(query, req, res)
+  const epoch = boundX(await bridge.epoch())
+  const message = buildMessage(Action.VOTE_START_KEYGEN, epoch)
+  await processMessage(message)
+  res.send('Voted\n')
+  logger.info('Voted successfully')
 }
 
 async function voteCancelKeygen(req, res) {
   logger.info('Voting for cancelling new epoch keygen')
-  const query = bridge.interface.functions.voteCancelKeygen.encode([])
-  await sendVote(query, req, res)
+  const epoch = boundX(await bridge.nextEpoch())
+  const message = buildMessage(Action.VOTE_CANCEL_KEYGEN, epoch)
+  await processMessage(message)
+  res.send('Voted\n')
+  logger.info('Voted successfully')
 }
 
 async function voteAddValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for adding new validator')
-    const query = bridge.interface.functions.voteAddValidator.encode([req.params.validator])
-    await sendVote(query, req, res)
+    const epoch = boundX(await bridge.epoch())
+    const message = buildMessage(Action.VOTE_ADD_VALIDATOR, epoch, req.params.validator)
+    await processMessage(message)
+    res.send('Voted\n')
+    logger.info('Voted successfully')
   }
 }
 
 async function voteChangeThreshold(req, res) {
   if (/^[0-9]+$/.test(req.params.threshold)) {
     logger.info('Voting for changing threshold')
-    const query = bridge.interface.functions.voteChangeThreshold.encode([req.params.threshold])
-    await sendVote(query, req, res)
+    const epoch = boundX(await bridge.epoch())
+    const message = buildMessage(
+      Action.VOTE_CHANGE_THRESHOLD,
+      epoch,
+      parseInt(req.params.threshold, 10)
+    )
+    await processMessage(message)
+    res.send('Voted\n')
+    logger.info('Voted successfully')
   }
 }
 
 async function voteChangeCloseEpoch(req, res) {
   if (req.params.closeEpoch === 'true' || req.params.closeEpoch === 'false') {
     logger.info('Voting for changing close epoch')
-    const query = bridge.interface.functions.voteChangeCloseEpoch.encode([req.params.closeEpoch === 'true'])
-    await sendVote(query, req, res)
+    const epoch = boundX(await bridge.epoch())
+    const message = buildMessage(Action.VOTE_CHANGE_CLOSE_EPOCH, epoch, req.params.closeEpoch === 'true')
+    await processMessage(message)
+    res.send('Voted\n')
+    logger.info('Voted successfully')
   }
 }
 
 async function voteRemoveValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for removing validator')
-    const query = bridge.interface.functions.voteRemoveValidator.encode([req.params.validator])
-    await sendVote(query, req, res, true)
+    const epoch = boundX(await bridge.epoch())
+    const message = buildMessage(Action.VOTE_REMOVE_VALIDATOR, epoch, req.params.validator)
+    await processMessage(message)
+    res.send('Voted\n')
+    logger.info('Voted successfully')
   }
 }
 
@@ -289,16 +310,9 @@ async function transfer(req, res) {
   } = req.body
   if (ethers.utils.isHexString(to, 20)) {
     logger.info(`Calling transfer to ${to}, 0x${value} tokens`)
-    const message = Buffer.from(padZeros(epoch.toString(16), 64) + hash + to.slice(2) + padZeros(value, 64), 'hex')
-    const signature = await sideWallet.signMessage(message)
-    const query = sharedDb.interface.functions.addSignature.encode([`0x${message.toString('hex')}`, signature])
-    await sideSendQuery(query)
-    await delay(5000)
-    const validators = await bridge.getValidatorsInEpoch(epoch)
-    const signatures = await sharedDb.getSignatures(ethers.utils.hashMessage(message), validators)
-    logger.debug(`Transfer call, message 0x${message.toString('hex')}, signatures ${signatures}`)
-    const query1 = bridge.interface.functions.transfer.encode([`0x${message.toString('hex')}`, signatures])
-    await homeSendQuery(query1)
+    const message = buildMessage(Action.TRANSFER, epoch, hash, to, value)
+    logger.info(`Message for sign: ${message.toString('hex')}`)
+    await processMessage(message)
   }
   res.send()
   logger.info('Transfer end')
@@ -315,12 +329,6 @@ function getForeignBalances(address) {
     .catch(() => ({}))
 }
 
-function getVotesCount(nextEpoch, voteType) {
-  return bridge.votesCount(
-    ethers.utils.keccak256(ethers.utils.solidityPack(['uint8', 'uint256'], [voteType, nextEpoch]))
-  ).then(boundX)
-}
-
 async function info(req, res) {
   logger.debug('Info start')
   try {
@@ -347,14 +355,6 @@ async function info(req, res) {
       token.balanceOf(HOME_BRIDGE_ADDRESS)
         .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18).toFixed(8, 3)))
     ])
-    const [
-      confirmationsForFundsTransfer, votesForVoting, votesForKeygen, votesForCancelKeygen
-    ] = await Promise.all([
-      getVotesCount(nextEpoch, 1),
-      getVotesCount(nextEpoch, 2),
-      getVotesCount(nextEpoch, 7),
-      getVotesCount(nextEpoch, 8)
-    ])
     const foreignAddress = publicKeyToAddress({
       x,
       y
@@ -378,11 +378,7 @@ async function info(req, res) {
       homeBalance,
       foreignBalanceTokens: parseFloat(balances[FOREIGN_ASSET]) || 0,
       foreignBalanceNative: parseFloat(balances.BNB) || 0,
-      bridgeStatus: decodeStatus(status),
-      votesForVoting,
-      votesForKeygen,
-      votesForCancelKeygen,
-      confirmationsForFundsTransfer
+      bridgeStatus: decodeStatus(status)
     }
     logger.trace('%o', msg)
     res.send(msg)
@@ -416,10 +412,8 @@ votesProxyApp.get('/vote/changeCloseEpoch/:closeEpoch', voteChangeCloseEpoch)
 votesProxyApp.get('/info', info)
 
 async function main() {
-  homeValidatorNonce = await homeWallet.getTransactionCount()
   sideValidatorNonce = await sideWallet.getTransactionCount()
 
-  homeSender = await createSender(HOME_RPC_URL, VALIDATOR_PRIVATE_KEY)
   sideSender = await createSender(SIDE_RPC_URL, VALIDATOR_PRIVATE_KEY)
 
   logger.warn(`My validator address in home and side networks is ${validatorAddress}`)
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 0f16b9e..4504b4c 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -1,6 +1,7 @@
 const exec = require('child_process')
 const fs = require('fs')
 const express = require('express')
+const axios = require('axios')
 
 const logger = require('./logger')
 const { connectRabbit, assertQueue } = require('./amqp')
@@ -11,11 +12,17 @@ const { RABBITMQ_URL, PROXY_URL } = process.env
 
 const app = express()
 
+const proxyClient = axios.create({ baseURL: PROXY_URL })
+
 let currentKeygenEpoch = null
 let ready = false
 
-async function confirmKeygen(keysFile) {
-  exec.execSync(`curl -X POST -H "Content-Type: application/json" -d @"${keysFile}" "${PROXY_URL}/confirmKeygen"`, { stdio: 'pipe' })
+async function confirmKeygen({ x, y }, epoch) {
+  await proxyClient.post('/confirmKeygen', {
+    x,
+    y,
+    epoch
+  })
 }
 
 async function main() {
@@ -51,7 +58,7 @@ async function main() {
         logger.warn(`Generated multisig account in binance chain: ${publicKeyToAddress(publicKey)}`)
 
         logger.info('Sending keys confirmation')
-        await confirmKeygen(keysFile)
+        await confirmKeygen(publicKey, epoch)
       } else {
         logger.warn(`Keygen for epoch ${epoch} failed`)
       }
diff --git a/src/oracle/tss-keygen/package.json b/src/oracle/tss-keygen/package.json
index ba4680e..fb1d8db 100644
--- a/src/oracle/tss-keygen/package.json
+++ b/src/oracle/tss-keygen/package.json
@@ -3,6 +3,7 @@
   "version": "0.0.1",
   "dependencies": {
     "amqplib": "0.5.3",
+    "axios": "0.19.0",
     "bech32": "1.1.3",
     "pino": "5.13.4",
     "pino-pretty": "3.2.1",
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 0e3810d..94e0b0a 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -68,12 +68,16 @@ function restart(req, res) {
   }
 }
 
-async function confirmFundsTransfer() {
-  await proxyClient.post('/confirmFundsTransfer')
+async function confirmFundsTransfer(epoch) {
+  await proxyClient.post('/confirmFundsTransfer', {
+    epoch
+  })
 }
 
-async function confirmCloseEpoch() {
-  await proxyClient.post('/confirmCloseEpoch')
+async function confirmCloseEpoch(epoch) {
+  await proxyClient.post('/confirmCloseEpoch', {
+    epoch
+  })
 }
 
 function getAccountFromFile(file) {
@@ -264,7 +268,7 @@ async function main() {
         const signResult = await sign(keysFile, hash, tx, publicKey, from)
 
         if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
-          await confirmCloseEpoch()
+          await confirmCloseEpoch(closeEpoch)
           break
         }
 
@@ -338,7 +342,7 @@ async function main() {
         const signResult = await sign(keysFile, hash, tx, publicKey, from)
 
         if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
-          await confirmFundsTransfer()
+          await confirmFundsTransfer(epoch)
           break
         }
 

From 8ad02bcab44b5597cddae8c7d3aeae77388bddfe Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 24 Nov 2019 18:43:09 +0300
Subject: [PATCH 116/129] Using new private key for side oracle transactions

---
 src/ethereum-testnet/side-oracle/.env.development | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ethereum-testnet/side-oracle/.env.development b/src/ethereum-testnet/side-oracle/.env.development
index 08ced61..56f1de7 100644
--- a/src/ethereum-testnet/side-oracle/.env.development
+++ b/src/ethereum-testnet/side-oracle/.env.development
@@ -1,7 +1,7 @@
 HOME_RPC_URL=http://ganache_home:8545
 HOME_BRIDGE_ADDRESS=0x44c158FE850821ae69DaF37AADF5c539e9d0025B
 
-HOME_PRIVATE_KEY=e2aeb24eaa63102d0c0821717c3b6384abdabd7af2ad4ec8e650dce300798b27
+HOME_PRIVATE_KEY=fd5c416a8d497a343d4ee1ac7a8f407450ae115b0001cdd6f2dad715baa3bc25
 
 SIDE_RPC_URL=http://ganache_side:8545
 SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc

From 73ccd306888a4725e3799d90694cd7d4884be12e Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Sun, 24 Nov 2019 20:06:45 +0300
Subject: [PATCH 117/129] Fixed _decodeBoolean

---
 .../deploy-home/contracts/MessageDecoder.sol       |  2 +-
 .../deploy-home/contracts/MessageHandler.sol       |  5 -----
 .../deploy-side/contracts/SignedMessageStorage.sol | 14 +-------------
 3 files changed, 2 insertions(+), 19 deletions(-)

diff --git a/src/deploy/deploy-home/contracts/MessageDecoder.sol b/src/deploy/deploy-home/contracts/MessageDecoder.sol
index 12dd463..903a2b0 100644
--- a/src/deploy/deploy-home/contracts/MessageDecoder.sol
+++ b/src/deploy/deploy-home/contracts/MessageDecoder.sol
@@ -13,7 +13,7 @@ contract MessageDecoder {
 
     function _decodeBoolean(bytes memory message) pure internal returns (bool a) {
         assembly {
-            a := mload(add(message, 34))
+            a := and(mload(add(message, 34)), 1)
         }
     }
 
diff --git a/src/deploy/deploy-home/contracts/MessageHandler.sol b/src/deploy/deploy-home/contracts/MessageHandler.sol
index 7a8676d..3554ad9 100644
--- a/src/deploy/deploy-home/contracts/MessageHandler.sol
+++ b/src/deploy/deploy-home/contracts/MessageHandler.sol
@@ -65,11 +65,6 @@ contract MessageHandler is Government, MessageDecoder {
             require(message.length == 117, "Incorrect message length");
             (address to, uint value) = _decodeTransfer(message);
             _transfer(to, value);
-            // 0b
-            // 0000000000000000000000000000000000000000000000000000000000000001
-            // 73824c9dc9318568f803a7fd6a147d67f0c1c328f0ed955456ed7357e6b470f8
-            // ad6c8127143032d843a260c5d379d8d9b3d51f15
-            // 0000000000000000000000000000000000000000000000004563918244f40000
         } else {
             revert("Unknown message action");
         }
diff --git a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
index 037e670..aeca9fd 100644
--- a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
@@ -9,19 +9,7 @@ contract SignedMessageStorage {
     }
 
     mapping(bytes32 => SignedMessage) public signedMessages;
-    // 0xc17c720a
-    // 0000000000000000000000000000000000000000000000000000000000000040
-    // 00000000000000000000000000000000000000000000000000000000000000e0
-    // 0000000000000000000000000000000000000000000000000000000000000061
-    // 00
-    // 0000000000000000000000000000000000000000000000000000000000000001
-    // 7681bd587db2576708db7085c2704c84e19db65f5b8a90897866c411a4002f86
-    // 6c66695a8595b4b41f779877b2a177c79969bfd627bd691bcd14f27eaab7ad3c
-    // 00000000000000000000000000000000000000000000000000000000000000
-    // 0000000000000000000000000000000000000000000000000000000000000041
-    // 82b4f5c4211ca2c5a0a5ec8d5476da5d537e282b852108bcfb006058b942d6a1
-    // 51ca56bfe41529215fe1f6b8a56b69ecb1357d588bfb38a9f7bd858df82d8038
-    // 1c00000000000000000000000000000000000000000000000000000000000000
+
     function addSignature(bytes memory message, bytes memory rsv) public {
         require(message.length > 0, "Incorrect message length");
         require(rsv.length == 65, "Incorrect signature length");

From 5efe01db6543af008b8f2d2da5078e49c002ba82 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 15:02:20 +0300
Subject: [PATCH 118/129] Eslint for side oracle

---
 src/ethereum-testnet/.eslintrc | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 src/ethereum-testnet/.eslintrc

diff --git a/src/ethereum-testnet/.eslintrc b/src/ethereum-testnet/.eslintrc
new file mode 100644
index 0000000..3703c0a
--- /dev/null
+++ b/src/ethereum-testnet/.eslintrc
@@ -0,0 +1,8 @@
+{
+  "extends": [
+    "../../.eslintrc"
+  ],
+  "rules": {
+    "no-console": 0
+  }
+}

From 93563cfa8ad19a5206082b93f062ff267143ba3d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 15:04:03 +0300
Subject: [PATCH 119/129] Used more convinient uintX types for numbers in
 contracts

---
 .../deploy-home/contracts/BasicBridge.sol     | 91 ++++++++-----------
 src/deploy/deploy-home/contracts/Bridge.sol   | 12 +--
 .../deploy-home/contracts/Government.sol      | 19 ++--
 .../deploy-home/contracts/MessageDecoder.sol  | 22 ++---
 .../deploy-home/contracts/MessageHandler.sol  | 63 ++++++-------
 .../contracts/SignedMessageStorage.sol        | 18 ++--
 .../deploy-side/contracts/SignupStorage.sol   | 12 +--
 src/ethereum-testnet/side-oracle/index.js     | 11 ++-
 src/oracle/ethWatcher/ethWatcher.js           | 53 ++++++-----
 src/oracle/proxy/contractsAbi.js              | 40 +++-----
 src/oracle/proxy/index.js                     | 60 ++++++------
 src/oracle/proxy/utils.js                     | 11 +--
 .../ethereumSend/testEthereumSend.js          |  2 +-
 tests/test/utils/homeContracts.js             |  2 +-
 14 files changed, 187 insertions(+), 229 deletions(-)

diff --git a/src/deploy/deploy-home/contracts/BasicBridge.sol b/src/deploy/deploy-home/contracts/BasicBridge.sol
index fa8bcf8..86a2e08 100644
--- a/src/deploy/deploy-home/contracts/BasicBridge.sol
+++ b/src/deploy/deploy-home/contracts/BasicBridge.sol
@@ -3,26 +3,26 @@ pragma solidity ^0.5.0;
 import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
 
 contract BasicBridge {
-    uint constant UPPER_BOUND = uint(-1);
+    uint32 constant UPPER_BOUND = 0xffffffff;
 
-    event EpochEnd(uint indexed epoch);
-    event EpochClose(uint indexed epoch);
+    event EpochEnd(uint16 indexed epoch);
+    event EpochClose(uint16 indexed epoch);
     event ForceSign();
-    event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch);
-    event NewEpochCancelled(uint indexed epoch);
-    event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch);
-    event EpochStart(uint indexed epoch, uint x, uint y);
+    event NewEpoch(uint16 indexed oldEpoch, uint16 indexed newEpoch);
+    event NewEpochCancelled(uint16 indexed epoch);
+    event NewFundsTransfer(uint16 indexed oldEpoch, uint16 indexed newEpoch);
+    event EpochStart(uint16 indexed epoch, uint x, uint y);
 
     struct State {
         address[] validators;
-        uint threshold;
-        uint rangeSize;
-        uint startBlock;
-        uint endBlock;
-        uint nonce;
+        uint32 startBlock;
+        uint32 endBlock;
+        uint32 nonce;
+        uint16 threshold;
+        uint16 rangeSize;
+        bool closeEpoch;
         uint x;
         uint y;
-        bool closeEpoch;
     }
 
     enum Status {
@@ -33,15 +33,15 @@ contract BasicBridge {
         FUNDS_TRANSFER // funds transfer, cannot be cancelled
     }
 
-    mapping(uint => State) states;
+    mapping(uint16 => State) public states;
 
     Status public status;
 
-    uint public epoch;
-    uint public nextEpoch;
+    uint16 public epoch;
+    uint16 public nextEpoch;
 
-    uint minTxLimit;
-    uint maxTxLimit;
+    uint96 minTxLimit;
+    uint96 maxTxLimit;
 
     IERC20 public tokenContract;
 
@@ -55,21 +55,11 @@ contract BasicBridge {
         _;
     }
 
-    modifier readyOrClosing {
-        require(status == Status.READY || status == Status.CLOSING_EPOCH, "Not in ready or closing epoch state");
-        _;
-    }
-
     modifier voting {
         require(status == Status.VOTING, "Not in voting state");
         _;
     }
 
-    modifier readyOrVoting {
-        require(status == Status.READY || status == Status.VOTING, "Not in ready or voting state");
-        _;
-    }
-
     modifier keygen {
         require(status == Status.KEYGEN, "Not in keygen state");
         _;
@@ -80,60 +70,55 @@ contract BasicBridge {
         _;
     }
 
-    modifier currentValidator {
-        require(getPartyId() != 0, "Not a current validator");
-        _;
-    }
-
-    function getParties() view public returns (uint) {
+    function getParties() view public returns (uint16) {
         return getParties(epoch);
     }
 
-    function getNextParties() view public returns (uint) {
+    function getNextParties() view public returns (uint16) {
         return getParties(nextEpoch);
     }
 
-    function getParties(uint _epoch) view public returns (uint) {
-        return states[_epoch].validators.length;
+    function getParties(uint16 _epoch) view public returns (uint16) {
+        return uint16(states[_epoch].validators.length);
     }
 
-    function getThreshold() view public returns (uint) {
+    function getThreshold() view public returns (uint16) {
         return getThreshold(epoch);
     }
 
-    function getNextThreshold() view public returns (uint) {
+    function getNextThreshold() view public returns (uint16) {
         return getThreshold(nextEpoch);
     }
 
-    function getThreshold(uint _epoch) view public returns (uint) {
+    function getThreshold(uint16 _epoch) view public returns (uint16) {
         return states[_epoch].threshold;
     }
 
-    function getStartBlock() view public returns (uint) {
+    function getStartBlock() view public returns (uint32) {
         return getStartBlock(epoch);
     }
 
-    function getStartBlock(uint _epoch) view public returns (uint) {
+    function getStartBlock(uint16 _epoch) view public returns (uint32) {
         return states[_epoch].startBlock;
     }
 
-    function getRangeSize() view public returns (uint) {
+    function getRangeSize() view public returns (uint16) {
         return getRangeSize(epoch);
     }
 
-    function getNextRangeSize() view public returns (uint) {
+    function getNextRangeSize() view public returns (uint16) {
         return getRangeSize(nextEpoch);
     }
 
-    function getRangeSize(uint _epoch) view public returns (uint) {
+    function getRangeSize(uint16 _epoch) view public returns (uint16) {
         return states[_epoch].rangeSize;
     }
 
-    function getNonce() view public returns (uint) {
+    function getNonce() view public returns (uint32) {
         return getNonce(epoch);
     }
 
-    function getNonce(uint _epoch) view public returns (uint) {
+    function getNonce(uint16 _epoch) view public returns (uint32) {
         return states[_epoch].nonce;
     }
 
@@ -153,24 +138,24 @@ contract BasicBridge {
         return getCloseEpoch(nextEpoch);
     }
 
-    function getCloseEpoch(uint _epoch) view public returns (bool) {
+    function getCloseEpoch(uint16 _epoch) view public returns (bool) {
         return states[_epoch].closeEpoch;
     }
 
-    function getPartyId() view public returns (uint) {
+    function getPartyId() view public returns (uint16) {
         address[] memory validators = getValidators();
         for (uint i = 0; i < getParties(); i++) {
             if (validators[i] == msg.sender)
-                return i + 1;
+                return uint16(i + 1);
         }
         return 0;
     }
 
-    function getNextPartyId(address a) view public returns (uint) {
+    function getNextPartyId(address a) view public returns (uint16) {
         address[] memory validators = getNextValidators();
         for (uint i = 0; i < getNextParties(); i++) {
             if (validators[i] == a)
-                return i + 1;
+                return uint16(i + 1);
         }
         return 0;
     }
@@ -183,7 +168,7 @@ contract BasicBridge {
         return getValidators(nextEpoch);
     }
 
-    function getValidators(uint _epoch) view public returns (address[] memory) {
+    function getValidators(uint16 _epoch) view public returns (address[] memory) {
         return states[_epoch].validators;
     }
 }
diff --git a/src/deploy/deploy-home/contracts/Bridge.sol b/src/deploy/deploy-home/contracts/Bridge.sol
index 3b202b3..027d53f 100644
--- a/src/deploy/deploy-home/contracts/Bridge.sol
+++ b/src/deploy/deploy-home/contracts/Bridge.sol
@@ -4,16 +4,16 @@ import './openzeppelin-solidity/contracts/token/ERC20/IERC20.sol';
 import "./MessageHandler.sol";
 
 contract Bridge is MessageHandler {
-    event ExchangeRequest(uint value, uint nonce);
+    event ExchangeRequest(uint96 value, uint32 nonce);
 
     mapping(bytes32 => bool) usedExchangeRanges;
 
     constructor(
-        uint threshold,
+        uint16 threshold,
         address[] memory validators,
         address _tokenContract,
-        uint[2] memory limits,
-        uint rangeSize,
+        uint96[2] memory limits,
+        uint16 rangeSize,
         bool closeEpoch
     ) public {
         require(validators.length > 0);
@@ -43,10 +43,10 @@ contract Bridge is MessageHandler {
         emit NewEpoch(0, 1);
     }
 
-    function exchange(uint value) public ready {
+    function exchange(uint96 value) public ready {
         require(value >= minTxLimit && value >= 10 ** 10 && value <= maxTxLimit);
 
-        uint txRange = (block.number - getStartBlock()) / getRangeSize();
+        uint32 txRange = (uint32(block.number) - getStartBlock()) / uint32(getRangeSize());
         if (!usedExchangeRanges[keccak256(abi.encodePacked(txRange, epoch))]) {
             usedExchangeRanges[keccak256(abi.encodePacked(txRange, epoch))] = true;
             states[epoch].nonce++;
diff --git a/src/deploy/deploy-home/contracts/Government.sol b/src/deploy/deploy-home/contracts/Government.sol
index 0696a3c..e7fdaf9 100644
--- a/src/deploy/deploy-home/contracts/Government.sol
+++ b/src/deploy/deploy-home/contracts/Government.sol
@@ -24,7 +24,7 @@ contract Government is BasicBridge {
         states[nextEpoch].nonce = UPPER_BOUND;
         if (nextEpoch == 1) {
             status = Status.READY;
-            states[nextEpoch].startBlock = block.number;
+            states[nextEpoch].startBlock = uint32(block.number);
             epoch = nextEpoch;
             emit EpochStart(epoch, x, y);
         }
@@ -38,7 +38,7 @@ contract Government is BasicBridge {
         require(epoch > 0, "First epoch does not need funds transfer");
 
         status = Status.READY;
-        states[nextEpoch].startBlock = block.number;
+        states[nextEpoch].startBlock = uint32(block.number);
         epoch = nextEpoch;
         emit EpochStart(epoch, getX(), getY());
     }
@@ -49,7 +49,7 @@ contract Government is BasicBridge {
     }
 
     function _startVoting() internal ready {
-        states[epoch].endBlock = block.number;
+        states[epoch].endBlock = uint32(block.number);
         nextEpoch++;
         states[nextEpoch].threshold = getThreshold();
         states[nextEpoch].validators = getValidators();
@@ -76,23 +76,24 @@ contract Government is BasicBridge {
     function _removeValidator(address validator) internal voting {
         require(getNextPartyId(validator) != 0, "Already not a validator");
 
-        for (uint i = 0; i < getNextParties() - 1; i++) {
+        uint16 lastPartyId = getNextParties() - 1;
+        for (uint i = 0; i < lastPartyId; i++) {
             if (states[nextEpoch].validators[i] == validator) {
-                states[nextEpoch].validators[i] = getNextValidators()[getNextParties() - 1];
+                states[nextEpoch].validators[i] = getNextValidators()[lastPartyId];
                 break;
             }
         }
-        delete states[nextEpoch].validators[getNextParties() - 1];
+        delete states[nextEpoch].validators[lastPartyId];
         states[nextEpoch].validators.length--;
     }
 
-    function _changeThreshold(uint threshold) internal voting {
+    function _changeThreshold(uint16 threshold) internal voting {
         require(threshold > 0, "Invalid threshold value");
 
         states[nextEpoch].threshold = threshold;
     }
 
-    function _changeRangeSize(uint rangeSize) internal voting {
+    function _changeRangeSize(uint16 rangeSize) internal voting {
         require(rangeSize > 0, "Invalid range size");
 
         states[nextEpoch].rangeSize = rangeSize;
@@ -116,7 +117,7 @@ contract Government is BasicBridge {
         emit NewEpochCancelled(nextEpoch);
     }
 
-    function _transfer(address to, uint value) internal {
+    function _transfer(address to, uint96 value) internal {
         if (tokenContract.balanceOf(address(this)) >= value) {
             tokenContract.transfer(to, value);
         } else {
diff --git a/src/deploy/deploy-home/contracts/MessageDecoder.sol b/src/deploy/deploy-home/contracts/MessageDecoder.sol
index 903a2b0..56e94b9 100644
--- a/src/deploy/deploy-home/contracts/MessageDecoder.sol
+++ b/src/deploy/deploy-home/contracts/MessageDecoder.sol
@@ -3,37 +3,37 @@ pragma solidity ^0.5.0;
 
 contract MessageDecoder {
     // [0] - action type
-    // [1..32] - epoch
-    // [33..] - payload
-    function _decodeNumber(bytes memory message) pure internal returns (uint a) {
+    // [1,2] - epoch
+    // [3..] - payload
+    function _decodeUint16(bytes memory message) pure internal returns (uint16 a) {
         assembly {
-            a := mload(add(message, 65))
+            a := mload(add(message, 5))
         }
     }
 
     function _decodeBoolean(bytes memory message) pure internal returns (bool a) {
         assembly {
-            a := and(mload(add(message, 34)), 1)
+            a := and(mload(add(message, 4)), 1)
         }
     }
 
     function _decodeAddress(bytes memory message) pure internal returns (address a) {
         assembly {
-            a := mload(add(message, 53))
+            a := mload(add(message, 23))
         }
     }
 
     function _decodeKeygen(bytes memory message) pure internal returns (uint a, uint b) {
         assembly {
-            a := mload(add(message, 65))
-            b := mload(add(message, 97))
+            a := mload(add(message, 35))
+            b := mload(add(message, 67))
         }
     }
 
-    function _decodeTransfer(bytes memory message) pure internal returns (address a, uint b) {
+    function _decodeTransfer(bytes memory message) pure internal returns (address a, uint96 b) {
         assembly {
-            a := mload(add(message, 85))
-            b := mload(add(message, 117))
+            a := mload(add(message, 55))
+            b := mload(add(message, 67))
         }
     }
 }
diff --git a/src/deploy/deploy-home/contracts/MessageHandler.sol b/src/deploy/deploy-home/contracts/MessageHandler.sol
index 3554ad9..0c691e6 100644
--- a/src/deploy/deploy-home/contracts/MessageHandler.sol
+++ b/src/deploy/deploy-home/contracts/MessageHandler.sol
@@ -9,7 +9,7 @@ contract MessageHandler is Government, MessageDecoder {
     mapping(bytes32 => bool) public handledMessages;
 
     function applyMessage(bytes memory message, bytes memory signatures) public {
-        (bytes32 msgHash, uint msgEpoch) = checkSignedMessage(message, signatures);
+        (bytes32 msgHash, uint16 msgEpoch) = checkSignedMessage(message, signatures);
         handledMessages[msgHash] = true;
 
         Action msgAction = Action(uint8(message[0]));
@@ -23,77 +23,78 @@ contract MessageHandler is Government, MessageDecoder {
         }
 
         if (msgAction == Action.CONFIRM_KEYGEN) {
-            require(message.length == 97, "Incorrect message length");
+            // [3,34] - x, [35,66] - y
+            require(message.length == 67, "Incorrect message length");
             (uint x, uint y) = _decodeKeygen(message);
             _confirmKeygen(x, y);
         } else if (msgAction == Action.CONFIRM_FUNDS_TRANSFER) {
-            require(message.length == 33, "Incorrect message length");
+            require(message.length == 3, "Incorrect message length");
             _confirmFundsTransfer();
         } else if (msgAction == Action.CONFIRM_CLOSE_EPOCH) {
-            require(message.length == 33, "Incorrect message length");
+            require(message.length == 3, "Incorrect message length");
             _confirmCloseEpoch();
         } else if (msgAction == Action.VOTE_START_VOTING) {
-            require(message.length == 33, "Incorrect message length");
+            require(message.length == 3, "Incorrect message length");
             _startVoting();
         } else if (msgAction == Action.VOTE_ADD_VALIDATOR) {
-            require(message.length == 53, "Incorrect message length");
+            // [3,22] - address, [23,31] - extra data
+            require(message.length == 32, "Incorrect message length");
             address validator = _decodeAddress(message);
             _addValidator(validator);
         } else if (msgAction == Action.VOTE_REMOVE_VALIDATOR) {
-            require(message.length == 53, "Incorrect message length");
+            // [3,22] - address, [23,31] - extra data
+            require(message.length == 32, "Incorrect message length");
             address validator = _decodeAddress(message);
             _removeValidator(validator);
         } else if (msgAction == Action.VOTE_CHANGE_THRESHOLD) {
-            require(message.length == 65, "Incorrect message length");
-            uint threshold = _decodeNumber(message);
+            // [3,4] - threshold, [5,31] - extra data
+            require(message.length == 32, "Incorrect message length");
+            uint16 threshold = _decodeUint16(message);
             _changeThreshold(threshold);
         } else if (msgAction == Action.VOTE_CHANGE_RANGE_SIZE) {
-            require(message.length == 65, "Incorrect message length");
-            uint rangeSize = _decodeNumber(message);
+            // [3,4] - rangeSize, [5,31] - extra data
+            require(message.length == 32, "Incorrect message length");
+            uint16 rangeSize = _decodeUint16(message);
             _changeRangeSize(rangeSize);
         } else if (msgAction == Action.VOTE_CHANGE_CLOSE_EPOCH) {
-            require(message.length == 34, "Incorrect message length");
+            // [3] - closeEpoch, [4,31] - extra data
+            require(message.length == 32, "Incorrect message length");
             bool closeEpoch = _decodeBoolean(message);
             _changeCloseEpoch(closeEpoch);
         } else if (msgAction == Action.VOTE_START_KEYGEN) {
-            require(message.length == 33, "Incorrect message length");
+            require(message.length == 3, "Incorrect message length");
             _startKeygen();
         } else if (msgAction == Action.VOTE_CANCEL_KEYGEN) {
-            require(message.length == 33, "Incorrect message length");
+            require(message.length == 3, "Incorrect message length");
             _cancelKeygen();
         } else if (msgAction == Action.TRANSFER) {
-            require(message.length == 117, "Incorrect message length");
-            (address to, uint value) = _decodeTransfer(message);
+            // [3,34] - txHash, [35,54] - address, [55,66] - value
+            require(message.length == 67, "Incorrect message length");
+            (address to, uint96 value) = _decodeTransfer(message);
             _transfer(to, value);
         } else {
             revert("Unknown message action");
         }
     }
 
-    function checkSignedMessage(bytes memory message, bytes memory signatures) view public returns (bytes32, uint) {
+    function checkSignedMessage(bytes memory message, bytes memory signatures) view public returns (bytes32, uint16) {
         require(signatures.length % SIGNATURE_SIZE == 0, "Incorrect signatures length");
 
         bytes32 msgHash;
-        if (message.length == 33) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n33", message));
-        } else if (message.length == 34) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n34", message));
-        } else if (message.length == 53) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n53", message));
-        } else if (message.length == 65) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n65", message));
-        } else if (message.length == 97) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n97", message));
-        } else if (message.length == 117) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n117", message));
+        if (message.length == 3) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n3", message));
+        } else if (message.length == 32) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", message));
+        } else if (message.length == 67) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n67", message));
         } else {
             revert("Incorrect message length");
         }
         require(!handledMessages[msgHash], "Tx was already handled");
 
-        uint msgEpoch;
+        uint16 msgEpoch;
         assembly {
-            msgEpoch := mload(add(message, 33))
+            msgEpoch := mload(add(message, 3))
         }
         require(msgEpoch <= nextEpoch, "Invalid epoch number");
 
diff --git a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
index aeca9fd..a24dfd4 100644
--- a/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignedMessageStorage.sol
@@ -15,18 +15,12 @@ contract SignedMessageStorage {
         require(rsv.length == 65, "Incorrect signature length");
 
         bytes32 msgHash;
-        if (message.length == 33) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n33", message));
-        } else if (message.length == 34) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n34", message));
-        } else if (message.length == 53) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n53", message));
-        } else if (message.length == 65) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n65", message));
-        } else if (message.length == 97) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n97", message));
-        } else if (message.length == 117) {
-            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n117", message));
+        if (message.length == 3) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n3", message));
+        } else if (message.length == 32) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", message));
+        } else if (message.length == 67) {
+            msgHash = keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n67", message));
         } else {
             revert("Incorrect message length");
         }
diff --git a/src/deploy/deploy-side/contracts/SignupStorage.sol b/src/deploy/deploy-side/contracts/SignupStorage.sol
index 7fe62fd..911adf1 100644
--- a/src/deploy/deploy-side/contracts/SignupStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignupStorage.sol
@@ -1,8 +1,8 @@
 pragma solidity ^0.5.0;
 
 contract SignupStorage {
-    mapping(bytes32 => uint) public signupsCount;
-    mapping(bytes32 => mapping(address => uint)) public signups;
+    mapping(bytes32 => uint16) public signupsCount;
+    mapping(bytes32 => mapping(address => uint16)) public signups;
 
     function signup(bytes32 hash) public {
         require(signups[hash][msg.sender] == 0, "Already signuped");
@@ -14,12 +14,12 @@ contract SignupStorage {
         bytes32 hash,
         address[] memory validators,
         address validator
-    ) view public returns (uint) {
+    ) view public returns (uint16) {
         if (signups[hash][validator] == 0)
             return 0;
-        uint id = 1;
+        uint16 id = 1;
         for (uint i = 0; i < validators.length; i++) {
-            uint vid = signups[hash][validators[i]];
+            uint16 vid = signups[hash][validators[i]];
             if (vid > 0 && vid < signups[hash][validator])
                 id++;
         }
@@ -29,7 +29,7 @@ contract SignupStorage {
     function getSignupAddress(
         bytes32 hash,
         address[] memory validators,
-        uint signupNumber
+        uint16 signupNumber
     ) view public returns (address) {
         for (uint i = 0; i < validators.length; i++) {
             if (getSignupNumber(hash, validators, validators[i]) == signupNumber) {
diff --git a/src/ethereum-testnet/side-oracle/index.js b/src/ethereum-testnet/side-oracle/index.js
index d77be3f..30632a3 100644
--- a/src/ethereum-testnet/side-oracle/index.js
+++ b/src/ethereum-testnet/side-oracle/index.js
@@ -7,8 +7,8 @@ const SIDE_MAX_FETCH_RANGE_SIZE = parseInt(process.env.SIDE_MAX_FETCH_RANGE_SIZE
 
 const bridgeAbi = [
   'function applyMessage(bytes message, bytes signatures)',
-  'function getThreshold(uint epoch) view returns (uint)',
-  'function getValidators(uint epoch) view returns (address[])'
+  'function getThreshold(uint16 epoch) view returns (uint16)',
+  'function getValidators(uint16 epoch) view returns (address[])'
 ]
 const sharedDbAbi = [
   'event NewMessage(bytes32 msgHash)',
@@ -31,7 +31,7 @@ async function delay(ms) {
 async function handleNewMessage(event) {
   const { msgHash } = event.values
   const message = await sharedDb.signedMessages(msgHash)
-  const epoch = parseInt(message.slice(4, 68), 16)
+  const epoch = parseInt(message.slice(4, 8), 16)
   const [threshold, validators] = await Promise.all([
     bridge.getThreshold(epoch),
     bridge.getValidators(epoch)
@@ -49,7 +49,8 @@ async function handleNewMessage(event) {
         gasLimit: 1000000,
         nonce
       })
-      await tx.wait()
+      const receipt = await tx.wait()
+      console.log(`Used gas: ${receipt.gasUsed.toNumber()}`)
       nonce += 1
       break
     }
@@ -89,7 +90,7 @@ async function loop() {
 
   for (let i = 0; i < bridgeEvents.length; i += 1) {
     const event = sharedDb.interface.parseLog(bridgeEvents[i])
-    console.log('Consumed event', event, bridgeEvents[i])
+    console.log('Consumed event', event)
     await handleNewMessage(event)
   }
 
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 18f0491..e835852 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -15,17 +15,17 @@ const HOME_MAX_FETCH_RANGE_SIZE = parseInt(process.env.HOME_MAX_FETCH_RANGE_SIZE
 
 const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
 const bridgeAbi = [
-  'event ExchangeRequest(uint value, uint nonce)',
-  'event EpochEnd(uint indexed epoch)',
-  'event NewEpoch(uint indexed oldEpoch, uint indexed newEpoch)',
-  'event NewEpochCancelled(uint indexed epoch)',
-  'event NewFundsTransfer(uint indexed oldEpoch, uint indexed newEpoch)',
-  'event EpochStart(uint indexed epoch, uint x, uint y)',
-  'event EpochClose(uint indexed epoch)',
+  'event ExchangeRequest(uint96 value, uint32 nonce)',
+  'event EpochEnd(uint16 indexed epoch)',
+  'event NewEpoch(uint16 indexed oldEpoch, uint16 indexed newEpoch)',
+  'event NewEpochCancelled(uint16 indexed epoch)',
+  'event NewFundsTransfer(uint16 indexed oldEpoch, uint16 indexed newEpoch)',
+  'event EpochStart(uint16 indexed epoch, uint256 x, uint256 y)',
+  'event EpochClose(uint16 indexed epoch)',
   'event ForceSign()',
-  'function getThreshold(uint epoch) view returns (uint)',
-  'function getParties(uint epoch) view returns (uint)',
-  'function getRangeSize() view returns (uint)',
+  'function getThreshold(uint16 epoch) view returns (uint16)',
+  'function getParties(uint16 epoch) view returns (uint16)',
+  'function getRangeSize() view returns (uint16)',
   'function getValidators() view returns (address[])'
 ]
 const bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, provider)
@@ -91,18 +91,18 @@ async function resetFutureMessages(queue) {
 }
 
 async function sendKeygen(event) {
-  const newEpoch = event.values.newEpoch.toNumber()
+  const { newEpoch } = event.values
   keygenQueue.send({
     epoch: newEpoch,
     blockNumber,
-    threshold: (await bridge.getThreshold(newEpoch)).toNumber(),
-    parties: (await bridge.getParties(newEpoch)).toNumber()
+    threshold: await bridge.getThreshold(newEpoch),
+    parties: await bridge.getParties(newEpoch)
   })
   logger.debug('Sent keygen start event')
 }
 
 function sendKeygenCancellation(event) {
-  const eventEpoch = event.values.epoch.toNumber()
+  const eventEpoch = event.values.epoch
   cancelKeygenQueue.send({
     epoch: eventEpoch,
     blockNumber
@@ -111,15 +111,14 @@ function sendKeygenCancellation(event) {
 }
 
 async function sendSignFundsTransfer(event) {
-  const newEpoch = event.values.newEpoch.toNumber()
-  const oldEpoch = event.values.oldEpoch.toNumber()
+  const { newEpoch, oldEpoch } = event.values
   signQueue.send({
     epoch: oldEpoch,
     blockNumber,
     newEpoch,
     nonce: foreignNonce[oldEpoch],
-    threshold: (await bridge.getThreshold(oldEpoch)).toNumber(),
-    parties: (await bridge.getParties(oldEpoch)).toNumber()
+    threshold: await bridge.getThreshold(oldEpoch),
+    parties: await bridge.getParties(oldEpoch)
   })
   logger.debug('Sent sign funds transfer event')
   foreignNonce[oldEpoch] += 1
@@ -150,7 +149,7 @@ async function sendSign(event, transactionHash) {
       y: publicKey.substr(68, 64)
     }),
     value: (new BN(event.values.value)).dividedBy(10 ** 18).toFixed(8, 3),
-    nonce: event.values.nonce.toNumber()
+    nonce: event.values.nonce
   }
 
   exchangeQueue.send(msgToQueue)
@@ -166,18 +165,18 @@ async function sendStartSign() {
     epoch,
     blockNumber,
     nonce: foreignNonce[epoch],
-    threshold: (await bridge.getThreshold(epoch)).toNumber(),
-    parties: (await bridge.getParties(epoch)).toNumber()
+    threshold: await bridge.getThreshold(epoch),
+    parties: await bridge.getParties(epoch)
   })
   foreignNonce[epoch] += 1
   redisTx.incr(`foreignNonce${epoch}`)
 }
 
 async function processEpochStart(event) {
-  epoch = event.values.epoch.toNumber()
+  epoch = event.values.epoch
   epochStart = blockNumber
   logger.info(`Epoch ${epoch} started`)
-  rangeSize = (await bridge.getRangeSize()).toNumber()
+  rangeSize = await bridge.getRangeSize()
   isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
@@ -194,8 +193,8 @@ async function sendEpochClose() {
     closeEpoch: epoch,
     blockNumber,
     nonce: foreignNonce[epoch],
-    threshold: (await bridge.getThreshold(epoch)).toNumber(),
-    parties: (await bridge.getParties(epoch)).toNumber()
+    threshold: await bridge.getThreshold(epoch),
+    parties: await bridge.getParties(epoch)
   })
   foreignNonce[epoch] += 1
   redisTx.incr(`foreignNonce${epoch}`)
@@ -220,7 +219,7 @@ async function initialize() {
     topics: bridge.filters.EpochStart().topics
   })).map((log) => bridge.interface.parseLog(log))
 
-  epoch = events.length ? events[events.length - 1].values.epoch.toNumber() : 0
+  epoch = events.length ? events[events.length - 1].values.epoch : 0
   logger.info(`Current epoch ${epoch}`)
   epochStart = events.length ? events[events.length - 1].blockNumber : 1
   const saved = (parseInt(await redis.get('homeBlock'), 10) + 1) || parseInt(HOME_START_BLOCK, 10)
@@ -237,7 +236,7 @@ async function initialize() {
     blockNumber = saved
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`), 10) || 0
   }
-  rangeSize = (await bridge.getRangeSize()).toNumber()
+  rangeSize = await bridge.getRangeSize()
   logger.debug(`Range size ${rangeSize}`)
   logger.debug('Checking if current validator')
   isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
index 609f911..6199fa1 100644
--- a/src/oracle/proxy/contractsAbi.js
+++ b/src/oracle/proxy/contractsAbi.js
@@ -2,38 +2,28 @@ const tokenAbi = [
   'function balanceOf(address account) view returns (uint256)'
 ]
 const bridgeAbi = [
-  'function getX() view returns (uint)',
-  'function getY() view returns (uint)',
-  'function epoch() view returns (uint)',
-  'function getRangeSize() view returns (uint)',
-  'function getNextRangeSize() view returns (uint)',
-  'function getStartBlock() view returns (uint)',
-  'function getNonce() view returns (uint)',
-  'function nextEpoch() view returns (uint)',
-  'function getThreshold() view returns (uint)',
-  'function getNextThreshold() view returns (uint)',
+  'function getX() view returns (uint256)',
+  'function getY() view returns (uint256)',
+  'function epoch() view returns (uint16)',
+  'function getRangeSize() view returns (uint16)',
+  'function getNextRangeSize() view returns (uint16)',
+  'function getStartBlock() view returns (uint32)',
+  'function getNonce() view returns (uint16)',
+  'function nextEpoch() view returns (uint16)',
+  'function getThreshold() view returns (uint16)',
+  'function getNextThreshold() view returns (uint16)',
   'function getValidators() view returns (address[])',
   'function getNextValidators() view returns (address[])',
   'function getCloseEpoch() view returns (bool)',
   'function getNextCloseEpoch() view returns (bool)',
-  'function status() view returns (uint)',
-  'function votesCount(bytes32) view returns (uint)',
-  'function getNextPartyId(address a) view returns (uint)',
-  'function confirmKeygen(uint x, uint y)',
-  'function confirmFundsTransfer()',
-  'function confirmCloseEpoch()',
-  'function startVoting()',
-  'function voteStartKeygen()',
-  'function voteCancelKeygen()',
-  'function voteAddValidator(address validator)',
-  'function voteRemoveValidator(address validator)',
-  'function voteChangeThreshold(uint threshold)',
-  'function voteChangeCloseEpoch(bool closeEpoch)'
+  'function status() view returns (uint8)',
+  'function votesCount(bytes32) view returns (uint16)',
+  'function getNextPartyId(address a) view returns (uint16)'
 ]
 const sharedDbAbi = [
-  'function getSignupAddress(bytes32 hash, address[] validators, uint signupNumber) view returns (address)',
+  'function getSignupAddress(bytes32 hash, address[] validators, uint16 signupNumber) view returns (address)',
   'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
-  'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint)',
+  'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint16)',
   'function setData(bytes32 hash, bytes32 key, bytes data)',
   'function signup(bytes32 hash)',
   'function addSignature(bytes message, bytes rsv)',
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index a529a10..ea68158 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -6,7 +6,7 @@ const ethers = require('ethers')
 
 const { tokenAbi, bridgeAbi, sharedDbAbi } = require('./contractsAbi')
 const {
-  Ok, Err, decodeStatus, boundX
+  Ok, Err, decodeStatus
 } = require('./utils')
 const encode = require('./encode')
 const decode = require('./decode')
@@ -128,8 +128,8 @@ async function set(req, res) {
 
 async function signupKeygen(req, res) {
   logger.debug('SignupKeygen call')
-  const epoch = (await bridge.nextEpoch()).toNumber()
-  const partyId = (await bridge.getNextPartyId(validatorAddress)).toNumber()
+  const epoch = await bridge.nextEpoch()
+  const partyId = await bridge.getNextPartyId(validatorAddress)
 
   if (partyId === 0) {
     res.send(Err({ message: 'Not a validator' }))
@@ -161,7 +161,7 @@ async function signupSign(req, res) {
   }
 
   const validators = await bridge.getValidators()
-  const id = (await sharedDb.getSignupNumber(hash, validators, validatorAddress)).toNumber()
+  const id = await sharedDb.getSignupNumber(hash, validators, validatorAddress)
 
   res.send(Ok({
     uuid: hash,
@@ -176,9 +176,9 @@ function encodeParam(param) {
       if (param.startsWith('0x')) {
         return Buffer.from(param.slice(2), 'hex')
       }
-      return Buffer.from(padZeros(param, 64), 'hex')
+      return Buffer.from(param, 'hex')
     case 'number':
-      return Buffer.from(padZeros(new BN(param).toString(16), 64), 'hex')
+      return Buffer.from(padZeros(param.toString(16), 4), 'hex')
     case 'boolean':
       return Buffer.from([param ? 1 : 0])
     default:
@@ -204,7 +204,7 @@ async function processMessage(message) {
 async function confirmKeygen(req, res) {
   logger.debug('Confirm keygen call')
   const { x, y, epoch } = req.body
-  const message = buildMessage(Action.CONFIRM_KEYGEN, epoch, x, y)
+  const message = buildMessage(Action.CONFIRM_KEYGEN, epoch, padZeros(x, 64), padZeros(y, 64))
   await processMessage(message)
   res.send()
   logger.debug('Confirm keygen end')
@@ -230,7 +230,7 @@ async function confirmCloseEpoch(req, res) {
 
 async function voteStartVoting(req, res) {
   logger.info('Voting for starting new epoch voting process')
-  const epoch = boundX(await bridge.epoch())
+  const epoch = await bridge.epoch()
   const message = buildMessage(Action.VOTE_START_VOTING, epoch)
   await processMessage(message)
   res.send('Voted\n')
@@ -239,7 +239,7 @@ async function voteStartVoting(req, res) {
 
 async function voteStartKeygen(req, res) {
   logger.info('Voting for starting new epoch keygen')
-  const epoch = boundX(await bridge.epoch())
+  const epoch = await bridge.epoch()
   const message = buildMessage(Action.VOTE_START_KEYGEN, epoch)
   await processMessage(message)
   res.send('Voted\n')
@@ -248,7 +248,7 @@ async function voteStartKeygen(req, res) {
 
 async function voteCancelKeygen(req, res) {
   logger.info('Voting for cancelling new epoch keygen')
-  const epoch = boundX(await bridge.nextEpoch())
+  const epoch = await bridge.nextEpoch()
   const message = buildMessage(Action.VOTE_CANCEL_KEYGEN, epoch)
   await processMessage(message)
   res.send('Voted\n')
@@ -258,8 +258,8 @@ async function voteCancelKeygen(req, res) {
 async function voteAddValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for adding new validator')
-    const epoch = boundX(await bridge.epoch())
-    const message = buildMessage(Action.VOTE_ADD_VALIDATOR, epoch, req.params.validator)
+    const epoch = await bridge.epoch()
+    const message = buildMessage(Action.VOTE_ADD_VALIDATOR, epoch, req.params.validator, padZeros('', 18))
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -269,12 +269,8 @@ async function voteAddValidator(req, res) {
 async function voteChangeThreshold(req, res) {
   if (/^[0-9]+$/.test(req.params.threshold)) {
     logger.info('Voting for changing threshold')
-    const epoch = boundX(await bridge.epoch())
-    const message = buildMessage(
-      Action.VOTE_CHANGE_THRESHOLD,
-      epoch,
-      parseInt(req.params.threshold, 10)
-    )
+    const epoch = await bridge.epoch()
+    const message = buildMessage(Action.VOTE_CHANGE_THRESHOLD, epoch, parseInt(req.params.threshold, 10), padZeros('', 54))
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -284,8 +280,8 @@ async function voteChangeThreshold(req, res) {
 async function voteChangeCloseEpoch(req, res) {
   if (req.params.closeEpoch === 'true' || req.params.closeEpoch === 'false') {
     logger.info('Voting for changing close epoch')
-    const epoch = boundX(await bridge.epoch())
-    const message = buildMessage(Action.VOTE_CHANGE_CLOSE_EPOCH, epoch, req.params.closeEpoch === 'true')
+    const epoch = await bridge.epoch()
+    const message = buildMessage(Action.VOTE_CHANGE_CLOSE_EPOCH, epoch, req.params.closeEpoch === 'true', padZeros('', 56))
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -295,8 +291,8 @@ async function voteChangeCloseEpoch(req, res) {
 async function voteRemoveValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for removing validator')
-    const epoch = boundX(await bridge.epoch())
-    const message = buildMessage(Action.VOTE_REMOVE_VALIDATOR, epoch, req.params.validator)
+    const epoch = await bridge.epoch()
+    const message = buildMessage(Action.VOTE_REMOVE_VALIDATOR, epoch, req.params.validator, padZeros('', 18))
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -310,7 +306,7 @@ async function transfer(req, res) {
   } = req.body
   if (ethers.utils.isHexString(to, 20)) {
     logger.info(`Calling transfer to ${to}, 0x${value} tokens`)
-    const message = buildMessage(Action.TRANSFER, epoch, hash, to, value)
+    const message = buildMessage(Action.TRANSFER, epoch, hash, to, padZeros(value, 24))
     logger.info(`Message for sign: ${message.toString('hex')}`)
     await processMessage(message)
   }
@@ -339,19 +335,19 @@ async function info(req, res) {
     ] = await Promise.all([
       bridge.getX().then((value) => new BN(value).toString(16)),
       bridge.getY().then((value) => new BN(value).toString(16)),
-      bridge.epoch().then(boundX),
-      bridge.getRangeSize().then(boundX),
-      bridge.getNextRangeSize().then(boundX),
+      bridge.epoch(),
+      bridge.getRangeSize(),
+      bridge.getNextRangeSize(),
       bridge.getCloseEpoch(),
       bridge.getNextCloseEpoch(),
-      bridge.getStartBlock().then(boundX),
-      bridge.getNonce().then(boundX),
-      bridge.nextEpoch().then(boundX),
-      bridge.getThreshold().then(boundX),
-      bridge.getNextThreshold().then(boundX),
+      bridge.getStartBlock(),
+      bridge.getNonce(),
+      bridge.nextEpoch(),
+      bridge.getThreshold(),
+      bridge.getNextThreshold(),
       bridge.getValidators(),
       bridge.getNextValidators(),
-      bridge.status().then(boundX),
+      bridge.status(),
       token.balanceOf(HOME_BRIDGE_ADDRESS)
         .then((value) => parseFloat(new BN(value).dividedBy(10 ** 18).toFixed(8, 3)))
     ])
diff --git a/src/oracle/proxy/utils.js b/src/oracle/proxy/utils.js
index 9bbdb58..2ae74d1 100644
--- a/src/oracle/proxy/utils.js
+++ b/src/oracle/proxy/utils.js
@@ -23,17 +23,8 @@ function decodeStatus(status) {
   }
 }
 
-function boundX(x) {
-  try {
-    return x.toNumber()
-  } catch (e) {
-    return -1
-  }
-}
-
 module.exports = {
   Ok,
   Err,
-  decodeStatus,
-  boundX
+  decodeStatus
 }
diff --git a/src/test-services/ethereumSend/testEthereumSend.js b/src/test-services/ethereumSend/testEthereumSend.js
index 76f0468..7d3397d 100644
--- a/src/test-services/ethereumSend/testEthereumSend.js
+++ b/src/test-services/ethereumSend/testEthereumSend.js
@@ -9,7 +9,7 @@ const tokenAbi = [
   'function approve(address to, uint256 value)'
 ]
 const bridgeAbi = [
-  'function exchange(uint value)'
+  'function exchange(uint96 value)'
 ]
 
 const PRIVATE_KEY = process.env.PRIVATE_KEY || HOME_PRIVATE_KEY
diff --git a/tests/test/utils/homeContracts.js b/tests/test/utils/homeContracts.js
index 6912273..b753e47 100644
--- a/tests/test/utils/homeContracts.js
+++ b/tests/test/utils/homeContracts.js
@@ -9,7 +9,7 @@ const abiToken = [
   'function allowance(address owner, address spender) view returns (uint)'
 ]
 const abiBridge = [
-  'function exchange(uint value)'
+  'function exchange(uint96 value)'
 ]
 
 const provider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)

From 56b59fdfd3faecf49859d88dbd01a28592318d86 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 15:30:35 +0300
Subject: [PATCH 120/129] Extra data query parameter for some of the votes

---
 src/oracle/proxy/index.js | 36 ++++++++++++++++++++++++++++++++----
 tests/run.sh              |  2 +-
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index ea68158..da4231c 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -259,7 +259,12 @@ async function voteAddValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for adding new validator')
     const epoch = await bridge.epoch()
-    const message = buildMessage(Action.VOTE_ADD_VALIDATOR, epoch, req.params.validator, padZeros('', 18))
+    const message = buildMessage(
+      Action.VOTE_ADD_VALIDATOR,
+      epoch,
+      req.params.validator,
+      padZeros(req.attempt, 18)
+    )
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -270,7 +275,12 @@ async function voteChangeThreshold(req, res) {
   if (/^[0-9]+$/.test(req.params.threshold)) {
     logger.info('Voting for changing threshold')
     const epoch = await bridge.epoch()
-    const message = buildMessage(Action.VOTE_CHANGE_THRESHOLD, epoch, parseInt(req.params.threshold, 10), padZeros('', 54))
+    const message = buildMessage(
+      Action.VOTE_CHANGE_THRESHOLD,
+      epoch,
+      parseInt(req.params.threshold, 10),
+      padZeros(req.attempt, 54)
+    )
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -281,7 +291,12 @@ async function voteChangeCloseEpoch(req, res) {
   if (req.params.closeEpoch === 'true' || req.params.closeEpoch === 'false') {
     logger.info('Voting for changing close epoch')
     const epoch = await bridge.epoch()
-    const message = buildMessage(Action.VOTE_CHANGE_CLOSE_EPOCH, epoch, req.params.closeEpoch === 'true', padZeros('', 56))
+    const message = buildMessage(
+      Action.VOTE_CHANGE_CLOSE_EPOCH,
+      epoch,
+      req.params.closeEpoch === 'true',
+      padZeros(req.attempt, 56)
+    )
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -292,7 +307,12 @@ async function voteRemoveValidator(req, res) {
   if (ethers.utils.isHexString(req.params.validator, 20)) {
     logger.info('Voting for removing validator')
     const epoch = await bridge.epoch()
-    const message = buildMessage(Action.VOTE_REMOVE_VALIDATOR, epoch, req.params.validator, padZeros('', 18))
+    const message = buildMessage(
+      Action.VOTE_REMOVE_VALIDATOR,
+      epoch,
+      req.params.validator,
+      padZeros(req.attempt, 18)
+    )
     await processMessage(message)
     res.send('Voted\n')
     logger.info('Voted successfully')
@@ -407,6 +427,14 @@ votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
 votesProxyApp.get('/vote/changeCloseEpoch/:closeEpoch', voteChangeCloseEpoch)
 votesProxyApp.get('/info', info)
 
+votesProxyApp.use('/vote', (req, res, next) => {
+  if (/^[0-9]*$/.test(req.query.attempt)) {
+    req.attempt = req.query.attempt ? parseInt(req.query.attempt, 10).toString(16) : '0'
+    logger.debug(`Vote attempt 0x${req.attempt}`)
+    next()
+  }
+})
+
 async function main() {
   sideValidatorNonce = await sideWallet.getTransactionCount()
 
diff --git a/tests/run.sh b/tests/run.sh
index 35799b7..23b28be 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -25,5 +25,5 @@ docker cp "tests:/tests/results.xml" "./tests/results.xml" > /dev/null 2>&1 || t
 
 echo "Killing all remaining docker containers"
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}') > /dev/null 2>&1 || true
-docker kill ganache_home ganache_side > /dev/null 2>&1 || true
+docker kill $(docker ps | grep ethereum-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true
 docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}') > /dev/null 2>&1 || true

From 799004c159bd066c72d9963e6f9e06fd7f775d35 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 15:34:19 +0300
Subject: [PATCH 121/129] Explicit epoch in contract calls

---
 src/oracle/ethWatcher/ethWatcher.js | 12 ++++++------
 src/oracle/proxy/index.js           | 21 +++++++++++++--------
 2 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index e835852..1e71fc5 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -25,8 +25,8 @@ const bridgeAbi = [
   'event ForceSign()',
   'function getThreshold(uint16 epoch) view returns (uint16)',
   'function getParties(uint16 epoch) view returns (uint16)',
-  'function getRangeSize() view returns (uint16)',
-  'function getValidators() view returns (address[])'
+  'function getRangeSize(uint16 epoch) view returns (uint16)',
+  'function getValidators(uint16 epoch) view returns (address[])'
 ]
 const bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, provider)
 const validatorAddress = ethers.utils.computeAddress(`0x${VALIDATOR_PRIVATE_KEY}`)
@@ -176,8 +176,8 @@ async function processEpochStart(event) {
   epoch = event.values.epoch
   epochStart = blockNumber
   logger.info(`Epoch ${epoch} started`)
-  rangeSize = await bridge.getRangeSize()
-  isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
+  rangeSize = await bridge.getRangeSize(epoch)
+  isCurrentValidator = (await bridge.getValidators(epoch)).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
@@ -236,10 +236,10 @@ async function initialize() {
     blockNumber = saved
     foreignNonce[epoch] = parseInt(await redis.get(`foreignNonce${epoch}`), 10) || 0
   }
-  rangeSize = await bridge.getRangeSize()
+  rangeSize = await bridge.getRangeSize(epoch)
   logger.debug(`Range size ${rangeSize}`)
   logger.debug('Checking if current validator')
-  isCurrentValidator = (await bridge.getValidators()).includes(validatorAddress)
+  isCurrentValidator = (await bridge.getValidators(epoch)).includes(validatorAddress)
   if (isCurrentValidator) {
     logger.info(`${validatorAddress} is a current validator`)
   } else {
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index da4231c..f7da425 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -421,20 +421,25 @@ app.post('/transfer', transfer)
 votesProxyApp.get('/vote/startVoting', voteStartVoting)
 votesProxyApp.get('/vote/startKeygen', voteStartKeygen)
 votesProxyApp.get('/vote/cancelKeygen', voteCancelKeygen)
+
+votesProxyApp.use('/vote', (req, res, next) => {
+  if (/^[0-9]+$/.test(req.query.attempt)) {
+    req.attempt = parseInt(req.query.attempt, 10).toString(16)
+    logger.debug(`Vote attempt 0x${req.attempt}`)
+    next()
+  } else if (!req.query.attempt) {
+    req.attempt = '0'
+    logger.debug('Vote attempt 0x00')
+    next()
+  }
+})
+
 votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
 votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
 votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
 votesProxyApp.get('/vote/changeCloseEpoch/:closeEpoch', voteChangeCloseEpoch)
 votesProxyApp.get('/info', info)
 
-votesProxyApp.use('/vote', (req, res, next) => {
-  if (/^[0-9]*$/.test(req.query.attempt)) {
-    req.attempt = req.query.attempt ? parseInt(req.query.attempt, 10).toString(16) : '0'
-    logger.debug(`Vote attempt 0x${req.attempt}`)
-    next()
-  }
-})
-
 async function main() {
   sideValidatorNonce = await sideWallet.getTransactionCount()
 

From fd549fe6ab07a32d3d7df91f649c76fa7e4b1cb9 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 17:25:53 +0300
Subject: [PATCH 122/129] Refactored signer and keygen clients

---
 src/oracle/tss-keygen/keygen.js |  73 +++++----
 src/oracle/tss-sign/signer.js   | 262 ++++++++++++++++----------------
 2 files changed, 167 insertions(+), 168 deletions(-)

diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 4504b4c..256eded 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -14,6 +14,7 @@ const app = express()
 
 const proxyClient = axios.create({ baseURL: PROXY_URL })
 
+let channel
 let currentKeygenEpoch = null
 let ready = false
 
@@ -25,8 +26,45 @@ async function confirmKeygen({ x, y }, epoch) {
   })
 }
 
+function writeParams(parties, threshold) {
+  logger.debug('Writing params')
+  fs.writeFileSync('./params', JSON.stringify({
+    parties: parties.toString(),
+    threshold: (threshold - 1).toString()
+  }))
+}
+
+async function keygenConsumer(msg) {
+  const { epoch, parties, threshold } = JSON.parse(msg.content)
+  logger.info(`Consumed new epoch event, starting keygen for epoch ${epoch}`)
+
+  const keysFile = `/keys/keys${epoch}.store`
+
+  logger.info('Running ./keygen-entrypoint.sh')
+  currentKeygenEpoch = epoch
+
+  writeParams(parties, threshold)
+  const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], async () => {
+    currentKeygenEpoch = null
+    if (fs.existsSync(keysFile)) {
+      logger.info(`Finished keygen for epoch ${epoch}`)
+      const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
+      logger.warn(`Generated multisig account in binance chain: ${publicKeyToAddress(publicKey)}`)
+
+      logger.info('Sending keys confirmation')
+      await confirmKeygen(publicKey, epoch)
+    } else {
+      logger.warn(`Keygen for epoch ${epoch} failed`)
+    }
+    logger.debug('Ack for keygen message')
+    channel.ack(msg)
+  })
+  cmd.stdout.on('data', (data) => logger.debug(data.toString()))
+  cmd.stderr.on('data', (data) => logger.debug(data.toString()))
+}
+
 async function main() {
-  const channel = await connectRabbit(RABBITMQ_URL)
+  channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to epoch events queue')
   const keygenQueue = await assertQueue(channel, 'keygenQueue')
   const cancelKeygenQueue = await assertQueue(channel, 'cancelKeygenQueue')
@@ -36,38 +74,7 @@ async function main() {
   }
 
   channel.prefetch(1)
-  keygenQueue.consume((msg) => {
-    const { epoch, parties, threshold } = JSON.parse(msg.content)
-    logger.info(`Consumed new epoch event, starting keygen for epoch ${epoch}`)
-
-    const keysFile = `/keys/keys${epoch}.store`
-
-    logger.info('Running ./keygen-entrypoint.sh')
-    currentKeygenEpoch = epoch
-
-    logger.debug('Writing params')
-    fs.writeFileSync('./params', JSON.stringify({
-      parties: parties.toString(),
-      threshold: (threshold - 1).toString()
-    }))
-    const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], async () => {
-      currentKeygenEpoch = null
-      if (fs.existsSync(keysFile)) {
-        logger.info(`Finished keygen for epoch ${epoch}`)
-        const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
-        logger.warn(`Generated multisig account in binance chain: ${publicKeyToAddress(publicKey)}`)
-
-        logger.info('Sending keys confirmation')
-        await confirmKeygen(publicKey, epoch)
-      } else {
-        logger.warn(`Keygen for epoch ${epoch} failed`)
-      }
-      logger.debug('Ack for keygen message')
-      channel.ack(msg)
-    })
-    cmd.stdout.on('data', (data) => logger.debug(data.toString()))
-    cmd.stderr.on('data', (data) => logger.debug(data.toString()))
-  })
+  keygenQueue.consume(keygenConsumer)
 
   cancelKeygenQueue.consume(async (msg) => {
     const { epoch } = JSON.parse(msg.content)
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 94e0b0a..1e8ae81 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -27,7 +27,6 @@ const SIGN_OK = 0
 const SIGN_NONCE_INTERRUPT = 1
 const SIGN_FAILED = 2
 
-let attempt
 let nextAttempt = null
 let cancelled
 let ready = false
@@ -102,7 +101,8 @@ async function getAccount(address) {
 async function getFee() {
   logger.info('Getting fees')
   const response = await retry(() => httpClient.get('/api/v1/fees'))
-  return response.data.filter((fee) => fee.multi_transfer_fee)[0].multi_transfer_fee * 2
+  const multiTransferFee = response.data.find((fee) => fee.multi_transfer_fee).multi_transfer_fee
+  return new BN(multiTransferFee * 2).div(10 ** 8)
 }
 
 async function waitForAccountNonce(address, nonce) {
@@ -145,10 +145,14 @@ async function sendTx(tx) {
   }
 }
 
-function sign(keysFile, hash, tx, publicKey, signerAddress) {
+function sign(keysFile, tx, publicKey, signerAddress) {
   let restartTimeoutId
   let nonceDaemonIntervalId
   let nonceInterrupt = false
+
+  const hash = sha256(tx.getSignBytes())
+  logger.info(`Starting signature generation for transaction hash ${hash}`)
+
   return new Promise((resolve) => {
     const cmd = exec.execFile('./sign-entrypoint.sh', [PROXY_URL, keysFile, hash], async (error) => {
       logger.trace('Sign entrypoint exited, %o', error)
@@ -215,6 +219,125 @@ function sign(keysFile, hash, tx, publicKey, signerAddress) {
   })
 }
 
+function getAccountBalance(account, asset) {
+  return account.balances.find((token) => token.symbol === asset).free
+}
+
+async function buildTx(from, account, data, txAttempt) {
+  const { closeEpoch, newEpoch, nonce } = data
+
+  const txOptions = {
+    from,
+    accountNumber: account.account_number,
+    sequence: nonce,
+    asset: FOREIGN_ASSET,
+    memo: `Attempt ${txAttempt}`
+  }
+  let exchanges
+
+  if (closeEpoch) {
+    logger.info(`Building corresponding account flags transaction, nonce ${nonce}`)
+
+    txOptions.flags = 0x01
+  } else if (newEpoch) {
+    const newKeysFile = `/keys/keys${newEpoch}.store`
+    const to = getAccountFromFile(newKeysFile).address
+
+    if (to === '') {
+      return { tx: null }
+    }
+
+    logger.info(`Building corresponding transaction for transferring all funds, nonce ${nonce}, recipient ${to}`)
+    const fee = await getFee()
+
+    txOptions.recipients = [{
+      to,
+      tokens: getAccountBalance(account, FOREIGN_ASSET),
+      bnbs: new BN(getAccountBalance(account, 'BNB')).minus(fee)
+    }]
+  } else {
+    logger.info(`Building corresponding transfer transaction, nonce ${nonce}`)
+    exchanges = await getExchangeMessages(nonce)
+    const exchangesData = exchanges.map((exchangeMsg) => JSON.parse(exchangeMsg.content))
+
+    txOptions.recipients = exchangesData.map(({ value, recipient }) => ({
+      to: recipient,
+      tokens: value
+    }))
+  }
+
+  const tx = new Transaction(txOptions)
+
+  return {
+    tx,
+    exchanges
+  }
+}
+
+function writeParams(parties, threshold) {
+  logger.debug('Writing params')
+  fs.writeFileSync('./params', JSON.stringify({
+    parties: parties.toString(),
+    threshold: (threshold - 1).toString()
+  }))
+}
+
+async function consumer(msg) {
+  const data = JSON.parse(msg.content)
+
+  logger.info('Consumed sign event: %o', data)
+  const {
+    nonce, epoch, newEpoch, parties, threshold, closeEpoch
+  } = data
+
+  const keysFile = `/keys/keys${epoch || closeEpoch}.store`
+  const { address: from, publicKey } = getAccountFromFile(keysFile)
+  if (from === '') {
+    logger.info('No keys found, acking message')
+    channel.ack(msg)
+    return
+  }
+  const account = await getAccount(from)
+
+  if (nonce > account.sequence) {
+    logger.debug('Tx has been already sent')
+    logger.info('Acking message (skipped nonce)')
+    channel.ack(msg)
+    return
+  }
+
+  writeParams(parties, threshold)
+  let attempt = 1
+
+  const { tx, exchanges } = buildTx(from, account, data, attempt)
+
+  while (tx !== null) {
+    const signResult = await sign(keysFile, tx, publicKey, from)
+
+    if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
+      if (closeEpoch) {
+        await confirmCloseEpoch(closeEpoch)
+      } else if (newEpoch) {
+        await confirmFundsTransfer(epoch)
+      } else {
+        // eslint-disable-next-line no-loop-func
+        exchanges.forEach((exchangeMsg) => channel.ack(exchangeMsg))
+      }
+      break
+    }
+
+    // signer either failed, or timed out after parties signup
+    attempt = nextAttempt || attempt + 1
+    nextAttempt = null
+    logger.warn(`Sign failed, starting next attempt ${attempt}`)
+    tx.tx.memo = `Attempt ${attempt}`
+    await delay(1000)
+  }
+  logger.info('Acking message')
+  channel.ack(msg)
+}
+
+
 async function main() {
   channel = await connectRabbit(RABBITMQ_URL)
   logger.info('Connecting to signature events queue')
@@ -226,138 +349,7 @@ async function main() {
   }
 
   channel.prefetch(1)
-  signQueue.consume(async (msg) => {
-    const data = JSON.parse(msg.content)
-
-    logger.info('Consumed sign event: %o', data)
-    const {
-      nonce, epoch, newEpoch, parties, threshold, closeEpoch
-    } = data
-
-    const keysFile = `/keys/keys${epoch || closeEpoch}.store`
-    const { address: from, publicKey } = getAccountFromFile(keysFile)
-    if (from === '') {
-      logger.info('No keys found, acking message')
-      channel.ack(msg)
-      return
-    }
-    const account = await getAccount(from)
-
-    logger.debug('Writing params')
-    fs.writeFileSync('./params', JSON.stringify({
-      parties: parties.toString(),
-      threshold: (threshold - 1).toString()
-    }))
-
-    attempt = 1
-
-    if (closeEpoch) {
-      while (true) {
-        logger.info(`Building corresponding account flags transaction, nonce ${nonce}`)
-
-        const tx = new Transaction({
-          from,
-          accountNumber: account.account_number,
-          sequence: nonce,
-          flags: 0x01,
-          memo: `Attempt ${attempt}`
-        })
-
-        const hash = sha256(tx.getSignBytes())
-        logger.info(`Starting signature generation for transaction hash ${hash}`)
-        const signResult = await sign(keysFile, hash, tx, publicKey, from)
-
-        if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
-          await confirmCloseEpoch(closeEpoch)
-          break
-        }
-
-        // signer either failed, or timed out after parties signup
-        attempt = nextAttempt || attempt + 1
-        nextAttempt = null
-        logger.warn(`Sign failed, starting next attempt ${attempt}`)
-        await delay(1000)
-      }
-    } else if (!newEpoch) {
-      const exchanges = await getExchangeMessages(nonce)
-      const exchangesData = exchanges.map((exchangeMsg) => JSON.parse(exchangeMsg.content))
-
-      if (exchanges.length > 0 && account.sequence <= nonce) {
-        const recipients = exchangesData.map(({ value, recipient }) => ({
-          to: recipient,
-          tokens: value
-        }))
-
-        while (true) {
-          logger.info(`Building corresponding transfer transaction, nonce ${nonce}`)
-
-          const tx = new Transaction({
-            from,
-            accountNumber: account.account_number,
-            sequence: nonce,
-            recipients,
-            asset: FOREIGN_ASSET,
-            memo: `Attempt ${attempt}`
-          })
-
-          const hash = sha256(tx.getSignBytes())
-          logger.info(`Starting signature generation for transaction hash ${hash}`)
-          const signResult = await sign(keysFile, hash, tx, publicKey, from)
-
-          if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
-            // eslint-disable-next-line no-loop-func
-            exchanges.forEach((exchangeMsg) => channel.ack(exchangeMsg))
-            break
-          }
-
-          // signer either failed, or timed out after parties signup
-          attempt = nextAttempt || attempt + 1
-          nextAttempt = null
-          logger.warn(`Sign failed, starting next attempt ${attempt}`)
-          await delay(1000)
-        }
-      }
-    } else if (account.sequence <= nonce) {
-      const newKeysFile = `/keys/keys${newEpoch}.store`
-      const { address: to } = getAccountFromFile(newKeysFile)
-
-      while (to !== '') {
-        logger.info(`Building corresponding transaction for transferring all funds, nonce ${nonce}, recipient ${to}`)
-        const fee = await getFee()
-        const tx = new Transaction({
-          from,
-          accountNumber: account.account_number,
-          sequence: nonce,
-          recipients: [{
-            to,
-            tokens: account.balances.find((token) => token.symbol === FOREIGN_ASSET).free,
-            bnbs: new BN(account.balances.find((token) => token.symbol === 'BNB').free).minus(new BN(fee).div(10 ** 8))
-          }],
-          asset: FOREIGN_ASSET,
-          memo: `Attempt ${attempt}`
-        })
-
-        const hash = sha256(tx.getSignBytes())
-        logger.info(`Starting signature generation for transaction hash ${hash}`)
-        const signResult = await sign(keysFile, hash, tx, publicKey, from)
-
-        if (signResult === SIGN_OK || signResult === SIGN_NONCE_INTERRUPT) {
-          await confirmFundsTransfer(epoch)
-          break
-        }
-
-        // signer either failed, or timed out after parties signup
-        attempt = nextAttempt || attempt + 1
-        nextAttempt = null
-        logger.warn(`Sign failed, starting next attempt ${attempt}`)
-        await delay(1000)
-      }
-    } else {
-      logger.debug('Tx has been already sent')
-    }
-    logger.info('Acking message')
-    channel.ack(msg)
-  })
+  signQueue.consume(consumer)
 }
 
 app.get('/restart/:attempt', restart)

From dc5b415b9718ea08ec8d9ffe06878ff366c1339d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 17:32:31 +0300
Subject: [PATCH 123/129] Updated configs

---
 .circleci/config.yml                    | 7 ++++---
 DEMO.md                                 | 2 +-
 src/ethereum-testnet/docker-compose.yml | 2 +-
 src/oracle/tss-sign/signer.js           | 2 +-
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 18daaeb..41ffaa4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -92,9 +92,10 @@ orbs:
           - run:
               name: "Save ganache logs"
               command: |
-                mkdir -p ./artifacts/logs/ganache
-                docker logs ganache_home > ./artifacts/logs/ganache/home.log
-                docker logs ganache_side > ./artifacts/logs/ganache/side.log
+                mkdir -p ./artifacts/logs/ethereum
+                docker logs ethereum-testnet_side-oracle_1 > ./artifacts/logs/ethereum/side-oracle.log
+                docker logs ethereum-testnet_ganache_home_1 > ./artifacts/logs/ganache/ganache_home.log
+                docker logs ethereum-testnet_ganache_side_1 > ./artifacts/logs/ganache/ganache_side.log
               when: always
           - run:
               name: "Save binance logs"
diff --git a/DEMO.md b/DEMO.md
index 2d5a5f4..f225671 100644
--- a/DEMO.md
+++ b/DEMO.md
@@ -333,7 +333,7 @@ Make sure, to first run demo in development mode, before trying to run it in the
    docker kill binance-testnet_api-server_1
    docker kill ethereum-testnet_ganache_home_1
    docker kill ethereum-testnet_ganache_side_1
-   docker kill ethereum-testnet_side_oracle_1
+   docker kill ethereum-testnet_side-oracle_1
    ```
 3. Remove testnets and validators data:
    ```
diff --git a/src/ethereum-testnet/docker-compose.yml b/src/ethereum-testnet/docker-compose.yml
index 4003362..cb1af7d 100644
--- a/src/ethereum-testnet/docker-compose.yml
+++ b/src/ethereum-testnet/docker-compose.yml
@@ -18,7 +18,7 @@ services:
       - '8545:8545'
     volumes:
       - 'ganache_home_data:/app/db'
-  side_oracle:
+  side-oracle:
     build: side-oracle
     image: side-oracle
     env_file: side-oracle/.env.development
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 1e8ae81..058383a 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -309,7 +309,7 @@ async function consumer(msg) {
   writeParams(parties, threshold)
   let attempt = 1
 
-  const { tx, exchanges } = buildTx(from, account, data, attempt)
+  const { tx, exchanges } = await buildTx(from, account, data, attempt)
 
   while (tx !== null) {
     const signResult = await sign(keysFile, tx, publicKey, from)

From 11e22b3bc0bd25c214b64ebcbcc9b802aee0516d Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Mon, 25 Nov 2019 23:41:36 +0300
Subject: [PATCH 124/129] Keygen automatic restart possibility

---
 demo/validator1/.env.development   |  5 +-
 demo/validator1/.env.staging       |  3 ++
 demo/validator2/.env.development   |  5 +-
 demo/validator2/.env.staging       |  3 ++
 demo/validator3/.env.development   |  5 +-
 demo/validator3/.env.staging       |  3 ++
 src/oracle/docker-compose-test.yml |  2 +
 src/oracle/docker-compose.yml      |  2 +
 src/oracle/proxy/index.js          | 52 +++++++++++++++++--
 src/oracle/tss-keygen/keygen.js    | 81 +++++++++++++++++++++++++-----
 src/oracle/tss-sign/signer.js      |  2 +
 src/tss/multi-party-ecdsa          |  2 +-
 12 files changed, 146 insertions(+), 19 deletions(-)

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index 54e7248..fea34dc 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -9,7 +9,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 VALIDATOR_PRIVATE_KEY=2be3f252e16541bf1bb2d4a517d2bf173e6d09f2d765d32c64dc50515aec63ea
 
 VOTES_PROXY_PORT=5001
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index 89e3609..aef801b 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5001
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index 532206d..ced9a6e 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -9,7 +9,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 VALIDATOR_PRIVATE_KEY=e59d58c77b791f98f10187117374ae9c589d48a62720ec6a5e142b0cc134f685
 
 VOTES_PROXY_PORT=5002
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index 4e97765..8d064dd 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5002
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index cdf7303..d8eff01 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -9,7 +9,7 @@ SIDE_SHARED_DB_ADDRESS=0xd5fE0D28e058D375b0b038fFbB446Da37E85fFdc
 
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
 FOREIGN_FETCH_MAX_TIME_INTERVAL=60000
 FOREIGN_FETCH_INTERVAL=5000
 FOREIGN_FETCH_BLOCK_TIME_OFFSET=10000
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 VALIDATOR_PRIVATE_KEY=afaa4d4d6e54d25b0bf0361e3fd6cef562f6311bf6200de2dd0aa4cab63ae3b5
 
 VOTES_PROXY_PORT=5003
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index 9de99d3..2eef51d 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -18,6 +18,9 @@ SIGN_ATTEMPT_TIMEOUT=120000
 SIGN_NONCE_CHECK_INTERVAL=10000
 SEND_TIMEOUT=60000
 
+KEYGEN_ATTEMPT_TIMEOUT=120000
+KEYGEN_EPOCH_CHECK_INTERVAL=10000
+
 #VALIDATOR_PRIVATE_KEY is taken from .keys
 
 VOTES_PROXY_PORT=5003
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 4dbadd6..7923909 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -34,6 +34,8 @@ services:
     environment:
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://local_proxy:8001'
+      - KEYGEN_ATTEMPT_TIMEOUT
+      - KEYGEN_EPOCH_CHECK_INTERVAL
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 2867def..034b5b6 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -31,6 +31,8 @@ services:
     environment:
       - 'RABBITMQ_URL=amqp://rabbitmq:5672'
       - 'PROXY_URL=http://proxy:8001'
+      - KEYGEN_ATTEMPT_TIMEOUT
+      - KEYGEN_EPOCH_CHECK_INTERVAL
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index f7da425..466956d 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -73,6 +73,19 @@ function sideSendQuery(query) {
   })
 }
 
+async function status(req, res) {
+  logger.debug('Status call')
+  const [bridgeEpoch, bridgeStatus] = await Promise.all([
+    bridge.epoch(),
+    bridge.status()
+  ])
+  res.send({
+    bridgeEpoch,
+    bridgeStatus
+  })
+  logger.debug('Status end')
+}
+
 async function get(req, res) {
   logger.debug('Get call, %o', req.body.key)
   const round = req.body.key.second
@@ -131,12 +144,26 @@ async function signupKeygen(req, res) {
   const epoch = await bridge.nextEpoch()
   const partyId = await bridge.getNextPartyId(validatorAddress)
 
+  logger.debug('Checking previous attempts')
+  let attempt = 1
+  let uuid
+  while (true) {
+    uuid = `k${epoch}_${attempt}`
+    const data = await sharedDb.getData(validatorAddress, ethers.utils.id(uuid), ethers.utils.id('round1_0'))
+    if (data.length === 2) {
+      break
+    }
+    logger.trace(`Attempt ${attempt} is already used`)
+    attempt += 1
+  }
+  logger.debug(`Using attempt ${attempt}`)
+
   if (partyId === 0) {
     res.send(Err({ message: 'Not a validator' }))
     logger.debug('Not a validator')
   } else {
     res.send(Ok({
-      uuid: `k${epoch}`,
+      uuid,
       number: partyId
     }))
     logger.debug('SignupKeygen end')
@@ -287,6 +314,22 @@ async function voteChangeThreshold(req, res) {
   }
 }
 
+async function voteChangeRangeSize(req, res) {
+  if (/^[0-9]+$/.test(req.params.rangeSize)) {
+    logger.info('Voting for changing range size')
+    const epoch = await bridge.epoch()
+    const message = buildMessage(
+      Action.VOTE_CHANGE_RANGE_SIZE,
+      epoch,
+      parseInt(req.params.rangeSize, 10),
+      padZeros(req.attempt, 54)
+    )
+    await processMessage(message)
+    res.send('Voted\n')
+    logger.info('Voted successfully')
+  }
+}
+
 async function voteChangeCloseEpoch(req, res) {
   if (req.params.closeEpoch === 'true' || req.params.closeEpoch === 'false') {
     logger.info('Voting for changing close epoch')
@@ -350,7 +393,7 @@ async function info(req, res) {
   try {
     const [
       x, y, epoch, rangeSize, nextRangeSize, closeEpoch, nextCloseEpoch, epochStartBlock,
-      foreignNonce, nextEpoch, threshold, nextThreshold, validators, nextValidators, status,
+      foreignNonce, nextEpoch, threshold, nextThreshold, validators, nextValidators, bridgeStatus,
       homeBalance
     ] = await Promise.all([
       bridge.getX().then((value) => new BN(value).toString(16)),
@@ -394,7 +437,7 @@ async function info(req, res) {
       homeBalance,
       foreignBalanceTokens: parseFloat(balances[FOREIGN_ASSET]) || 0,
       foreignBalanceNative: parseFloat(balances.BNB) || 0,
-      bridgeStatus: decodeStatus(status)
+      bridgeStatus: decodeStatus(bridgeStatus)
     }
     logger.trace('%o', msg)
     res.send(msg)
@@ -408,6 +451,8 @@ async function info(req, res) {
   logger.debug('Info end')
 }
 
+app.get('/status', status)
+
 app.post('/get', get)
 app.post('/set', set)
 app.post('/signupkeygen', signupKeygen)
@@ -437,6 +482,7 @@ votesProxyApp.use('/vote', (req, res, next) => {
 votesProxyApp.get('/vote/addValidator/:validator', voteAddValidator)
 votesProxyApp.get('/vote/removeValidator/:validator', voteRemoveValidator)
 votesProxyApp.get('/vote/changeThreshold/:threshold', voteChangeThreshold)
+votesProxyApp.get('/vote/changeRangeSize/:rangeSize', voteChangeRangeSize)
 votesProxyApp.get('/vote/changeCloseEpoch/:closeEpoch', voteChangeCloseEpoch)
 votesProxyApp.get('/info', info)
 
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index 256eded..f2e9828 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -9,6 +9,12 @@ const { publicKeyToAddress } = require('./crypto')
 const { delay } = require('./wait')
 
 const { RABBITMQ_URL, PROXY_URL } = process.env
+const KEYGEN_ATTEMPT_TIMEOUT = parseInt(process.env.KEYGEN_ATTEMPT_TIMEOUT, 10)
+const KEYGEN_EPOCH_CHECK_INTERVAL = parseInt(process.env.KEYGEN_EPOCH_CHECK_INTERVAL, 10)
+
+const KEYGEN_OK = 0
+const KEYGEN_EPOCH_INTERRUPT = 1
+const KEYGEN_FAILED = 2
 
 const app = express()
 
@@ -34,6 +40,54 @@ function writeParams(parties, threshold) {
   }))
 }
 
+function killKeygen() {
+  exec.execSync('pkill gg18_keygen || true')
+}
+
+function keygen(keysFile, epoch) {
+  let restartTimeoutId
+  let epochDaemonIntervalId
+  let epochInterrupt
+
+  return new Promise((resolve) => {
+    const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], (error) => {
+      logger.trace('Keygen entrypoint exited, %o', error)
+      clearTimeout(restartTimeoutId)
+      clearInterval(epochDaemonIntervalId)
+      currentKeygenEpoch = null
+      if (fs.existsSync(keysFile)) {
+        logger.info(`Finished keygen for epoch ${epoch}`)
+        resolve(KEYGEN_OK)
+      } else {
+        logger.warn(`Keygen for epoch ${epoch} failed, will start new attempt`)
+        resolve(epochInterrupt ? KEYGEN_EPOCH_INTERRUPT : KEYGEN_FAILED)
+      }
+    })
+    cmd.stdout.on('data', (data) => {
+      const str = data.toString()
+      if (str.includes('Got all party signups')) {
+        restartTimeoutId = setTimeout(killKeygen, KEYGEN_ATTEMPT_TIMEOUT)
+      }
+      logger.debug(str)
+    })
+    cmd.stderr.on('data', (data) => logger.debug(data.toString()))
+
+    // Kill keygen if keygen for current epoch is already confirmed
+    epochDaemonIntervalId = setInterval(async () => {
+      logger.info(`Checking if bridge has confirmations keygen for epoch ${epoch}`)
+      const { bridgeEpoch, bridgeStatus } = (await proxyClient.get('/status')).data
+      logger.trace(`Current bridge epoch: ${bridgeEpoch}, current bridge status: ${bridgeStatus}`)
+      if (bridgeEpoch > epoch || bridgeStatus > 3) {
+        logger.info(`Bridge has already confirmed keygen for epoch ${epoch}`)
+        epochInterrupt = true
+        // Additional delay, maybe keygen will eventually finish
+        await delay(5000)
+        killKeygen()
+      }
+    }, KEYGEN_EPOCH_CHECK_INTERVAL)
+  })
+}
+
 async function keygenConsumer(msg) {
   const { epoch, parties, threshold } = JSON.parse(msg.content)
   logger.info(`Consumed new epoch event, starting keygen for epoch ${epoch}`)
@@ -44,23 +98,26 @@ async function keygenConsumer(msg) {
   currentKeygenEpoch = epoch
 
   writeParams(parties, threshold)
-  const cmd = exec.execFile('./keygen-entrypoint.sh', [PROXY_URL, keysFile], async () => {
-    currentKeygenEpoch = null
-    if (fs.existsSync(keysFile)) {
-      logger.info(`Finished keygen for epoch ${epoch}`)
+
+  while (true) {
+    const keygenResult = await keygen(keysFile, epoch)
+
+    if (keygenResult === KEYGEN_OK) {
       const publicKey = JSON.parse(fs.readFileSync(keysFile))[5]
       logger.warn(`Generated multisig account in binance chain: ${publicKeyToAddress(publicKey)}`)
 
       logger.info('Sending keys confirmation')
       await confirmKeygen(publicKey, epoch)
-    } else {
-      logger.warn(`Keygen for epoch ${epoch} failed`)
+      break
+    } else if (keygenResult === KEYGEN_EPOCH_INTERRUPT) {
+      logger.warn('Keygen was interrupted by epoch daemon')
+      break
     }
-    logger.debug('Ack for keygen message')
-    channel.ack(msg)
-  })
-  cmd.stdout.on('data', (data) => logger.debug(data.toString()))
-  cmd.stderr.on('data', (data) => logger.debug(data.toString()))
+
+    await delay(1000)
+  }
+  logger.info('Acking message')
+  channel.ack(msg)
 }
 
 async function main() {
@@ -81,7 +138,7 @@ async function main() {
     logger.info(`Consumed new cancel event for epoch ${epoch} keygen`)
     if (currentKeygenEpoch === epoch) {
       logger.info('Cancelling current keygen')
-      exec.execSync('pkill gg18_keygen || true')
+      killKeygen()
     }
     channel.ack(msg)
   })
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index 058383a..b380ca5 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -213,6 +213,8 @@ function sign(keysFile, tx, publicKey, signerAddress) {
       if (sequence > tx.tx.sequence) {
         logger.info('Account already has needed nonce, cancelling current sign process')
         nonceInterrupt = true
+        // Additional delay, maybe signer will eventually finish
+        await delay(5000)
         killSigner()
       }
     }, SIGN_NONCE_CHECK_INTERVAL)
diff --git a/src/tss/multi-party-ecdsa b/src/tss/multi-party-ecdsa
index f67cc7f..1eb620d 160000
--- a/src/tss/multi-party-ecdsa
+++ b/src/tss/multi-party-ecdsa
@@ -1 +1 @@
-Subproject commit f67cc7ffab0f460807f6e112ad93b5ce58e47ac6
+Subproject commit 1eb620d9a37f9839d3c391a3765062846e07039f

From b2f7d035f27a051fb7828e775b8aa2e0433c3dab Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 26 Nov 2019 15:03:55 +0300
Subject: [PATCH 125/129] Fixed circle ci config. Additional checks on next
 validator

---
 .circleci/config.yml                | 5 +++--
 src/oracle/ethWatcher/ethWatcher.js | 8 ++++++--
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 41ffaa4..cb370fa 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -94,8 +94,8 @@ orbs:
               command: |
                 mkdir -p ./artifacts/logs/ethereum
                 docker logs ethereum-testnet_side-oracle_1 > ./artifacts/logs/ethereum/side-oracle.log
-                docker logs ethereum-testnet_ganache_home_1 > ./artifacts/logs/ganache/ganache_home.log
-                docker logs ethereum-testnet_ganache_side_1 > ./artifacts/logs/ganache/ganache_side.log
+                docker logs ethereum-testnet_ganache_home_1 > ./artifacts/logs/ethereum/ganache_home.log
+                docker logs ethereum-testnet_ganache_side_1 > ./artifacts/logs/ethereum/ganache_side.log
               when: always
           - run:
               name: "Save binance logs"
@@ -107,6 +107,7 @@ orbs:
               when: always
           - store_artifacts:
               path: ./artifacts
+              destination: artifacts
               when: always
 jobs:
   init_tss:
diff --git a/src/oracle/ethWatcher/ethWatcher.js b/src/oracle/ethWatcher/ethWatcher.js
index 1e71fc5..e26d430 100644
--- a/src/oracle/ethWatcher/ethWatcher.js
+++ b/src/oracle/ethWatcher/ethWatcher.js
@@ -286,10 +286,14 @@ async function loop() {
       logger.trace('Consumed event %o %o', event, bridgeEvents[i])
       switch (event.name) {
         case 'NewEpoch':
-          await sendKeygen(event)
+          if ((await bridge.getValidators(event.values.newEpoch)).includes(validatorAddress)) {
+            await sendKeygen(event)
+          }
           break
         case 'NewEpochCancelled':
-          sendKeygenCancellation(event)
+          if ((await bridge.getValidators(event.values.epoch)).includes(validatorAddress)) {
+            sendKeygenCancellation(event)
+          }
           break
         case 'NewFundsTransfer':
           if (isCurrentValidator) {

From 751c52eac2326a00b98cfc631c93dbbd99ab6b4b Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 26 Nov 2019 16:52:38 +0300
Subject: [PATCH 126/129] Up-to-date tests readme

---
 tests/README.md | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/tests/README.md b/tests/README.md
index c6aa152..ca6edab 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -17,9 +17,7 @@ To run the bridge tests, you first need to clean old test environment, and then
 ./tests/init.sh
 ```
 This will create a clean development environment, using `./demo/start-environment.sh`.
-This will also prefund user accounts from `./tests/config.json` for both networks. 
-Prefunding process uses `./src/test-services` scripts. 
-Finally, this command will start 3 validators in  daemon mode (using `./demo/validator-demo.sh`), 
+Then, this command will start 3 validators in daemon mode (using `./demo/validator-demo.sh`), 
 and wait until they are ready.
 
 Next, you can run the tests:
@@ -27,9 +25,10 @@ Next, you can run the tests:
 ./tests/run.sh
 ```
 
-After tests are done, all active docker containers can be killed.
+After tests are done, all active docker containers should be killed automatically. 
+Or you can do it manually:
 ```bash
 docker kill $(docker ps | grep validator[1-3]_ | awk '{print $1}')
-docker kill ganache_side ganache_home
-docker kill binance-testnet_http-api_1 binance-testnet_node_1 binance-testnet_api-server_1
+docker kill $(docker ps | grep ethereum-testnet_ | awk '{print $1}')
+docker kill $(docker ps | grep binance-testnet_ | awk '{print $1}')
 ``` 

From 2d444a8cd27855bb1577eb7ab9020c712282ca1c Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 26 Nov 2019 16:53:35 +0300
Subject: [PATCH 127/129] Simplier approach for attempts tracking in signer

---
 .../deploy-side/contracts/SignupStorage.sol   | 25 ++++++++++++-----
 src/oracle/proxy/contractsAbi.js              |  1 +
 src/oracle/proxy/index.js                     | 19 ++++++++++++-
 src/oracle/tss-sign/signer.js                 | 28 ++++++-------------
 tests/test/ethToBncWithRestart.js             |  6 ++--
 tests/test/index.js                           |  4 +--
 tests/test/utils/signerController.js          |  4 +--
 7 files changed, 53 insertions(+), 34 deletions(-)

diff --git a/src/deploy/deploy-side/contracts/SignupStorage.sol b/src/deploy/deploy-side/contracts/SignupStorage.sol
index 911adf1..69d1477 100644
--- a/src/deploy/deploy-side/contracts/SignupStorage.sol
+++ b/src/deploy/deploy-side/contracts/SignupStorage.sol
@@ -1,13 +1,24 @@
 pragma solidity ^0.5.0;
 
 contract SignupStorage {
-    mapping(bytes32 => uint16) public signupsCount;
-    mapping(bytes32 => mapping(address => uint16)) public signups;
+    struct SignupsCounter {
+        uint16 count;
+        mapping(address => uint16) id;
+    }
+    mapping(bytes32 => SignupsCounter) public signups;
 
     function signup(bytes32 hash) public {
-        require(signups[hash][msg.sender] == 0, "Already signuped");
+        require(signups[hash].id[msg.sender] == 0, "Already signuped");
 
-        signups[hash][msg.sender] = ++signupsCount[hash];
+        signups[hash].id[msg.sender] = ++signups[hash].count;
+    }
+
+    function isSignuped(bytes32 hash) public view returns (bool) {
+        return isSignuped(hash, msg.sender);
+    }
+
+    function isSignuped(bytes32 hash, address validator) public view returns (bool) {
+        return signups[hash].id[validator] > 0;
     }
 
     function getSignupNumber(
@@ -15,12 +26,12 @@ contract SignupStorage {
         address[] memory validators,
         address validator
     ) view public returns (uint16) {
-        if (signups[hash][validator] == 0)
+        if (signups[hash].id[validator] == 0)
             return 0;
         uint16 id = 1;
         for (uint i = 0; i < validators.length; i++) {
-            uint16 vid = signups[hash][validators[i]];
-            if (vid > 0 && vid < signups[hash][validator])
+            uint16 vid = signups[hash].id[validators[i]];
+            if (vid > 0 && vid < signups[hash].id[validator])
                 id++;
         }
         return id;
diff --git a/src/oracle/proxy/contractsAbi.js b/src/oracle/proxy/contractsAbi.js
index 6199fa1..1a63694 100644
--- a/src/oracle/proxy/contractsAbi.js
+++ b/src/oracle/proxy/contractsAbi.js
@@ -24,6 +24,7 @@ const sharedDbAbi = [
   'function getSignupAddress(bytes32 hash, address[] validators, uint16 signupNumber) view returns (address)',
   'function getData(address from, bytes32 hash, bytes32 key) view returns (bytes)',
   'function getSignupNumber(bytes32 hash, address[] validators, address validator) view returns (uint16)',
+  'function isSignuped(bytes32 hash) view returns (bool)',
   'function setData(bytes32 hash, bytes32 key, bytes data)',
   'function signup(bytes32 hash)',
   'function addSignature(bytes message, bytes rsv)',
diff --git a/src/oracle/proxy/index.js b/src/oracle/proxy/index.js
index 466956d..6a12894 100644
--- a/src/oracle/proxy/index.js
+++ b/src/oracle/proxy/index.js
@@ -172,7 +172,24 @@ async function signupKeygen(req, res) {
 
 async function signupSign(req, res) {
   logger.debug('SignupSign call')
-  const hash = ethers.utils.id(req.body.third)
+  const msgHash = req.body.third
+
+  logger.debug('Checking previous attempts')
+  let attempt = 1
+  let uuid
+  let hash
+  while (true) {
+    uuid = `${msgHash}_${attempt}`
+    hash = ethers.utils.id(uuid)
+    const data = await sharedDb.isSignuped(hash)
+    if (!data) {
+      break
+    }
+    logger.trace(`Attempt ${attempt} is already used`)
+    attempt += 1
+  }
+  logger.debug(`Using attempt ${attempt}`)
+
   const query = sharedDb.interface.functions.signup.encode([hash])
   const { txHash } = await sideSendQuery(query)
   const receipt = await waitForReceipt(SIDE_RPC_URL, txHash)
diff --git a/src/oracle/tss-sign/signer.js b/src/oracle/tss-sign/signer.js
index b380ca5..b7e0d14 100644
--- a/src/oracle/tss-sign/signer.js
+++ b/src/oracle/tss-sign/signer.js
@@ -27,7 +27,6 @@ const SIGN_OK = 0
 const SIGN_NONCE_INTERRUPT = 1
 const SIGN_FAILED = 2
 
-let nextAttempt = null
 let cancelled
 let ready = false
 let exchangeQueue
@@ -58,13 +57,10 @@ function killSigner() {
 }
 
 function restart(req, res) {
-  if (/^[0-9]+$/.test(req.params.attempt)) {
-    logger.info(`Manual cancelling current sign attempt, starting ${req.params.attempt} attempt`)
-    nextAttempt = parseInt(req.params.attempt, 10)
-    killSigner()
-    cancelled = true
-    res.send('Done')
-  }
+  logger.info('Manual cancelling current sign attempt')
+  killSigner()
+  cancelled = true
+  res.send('Done')
 }
 
 async function confirmFundsTransfer(epoch) {
@@ -225,15 +221,14 @@ function getAccountBalance(account, asset) {
   return account.balances.find((token) => token.symbol === asset).free
 }
 
-async function buildTx(from, account, data, txAttempt) {
+async function buildTx(from, account, data) {
   const { closeEpoch, newEpoch, nonce } = data
 
   const txOptions = {
     from,
     accountNumber: account.account_number,
     sequence: nonce,
-    asset: FOREIGN_ASSET,
-    memo: `Attempt ${txAttempt}`
+    asset: FOREIGN_ASSET
   }
   let exchanges
 
@@ -309,9 +304,8 @@ async function consumer(msg) {
   }
 
   writeParams(parties, threshold)
-  let attempt = 1
 
-  const { tx, exchanges } = await buildTx(from, account, data, attempt)
+  const { tx, exchanges } = await buildTx(from, account, data)
 
   while (tx !== null) {
     const signResult = await sign(keysFile, tx, publicKey, from)
@@ -328,11 +322,7 @@ async function consumer(msg) {
       break
     }
 
-    // signer either failed, or timed out after parties signup
-    attempt = nextAttempt || attempt + 1
-    nextAttempt = null
-    logger.warn(`Sign failed, starting next attempt ${attempt}`)
-    tx.tx.memo = `Attempt ${attempt}`
+    logger.warn('Sign failed, starting next attempt')
     await delay(1000)
   }
   logger.info('Acking message')
@@ -354,7 +344,7 @@ async function main() {
   signQueue.consume(consumer)
 }
 
-app.get('/restart/:attempt', restart)
+app.get('/restart', restart)
 app.get('/start', (req, res) => {
   logger.info('Ready to start')
   ready = true
diff --git a/tests/test/ethToBncWithRestart.js b/tests/test/ethToBncWithRestart.js
index ed6c3f9..8f5aa1e 100644
--- a/tests/test/ethToBncWithRestart.js
+++ b/tests/test/ethToBncWithRestart.js
@@ -11,7 +11,7 @@ const { validators } = require('../config')
 
 const { HOME_BRIDGE_ADDRESS } = process.env
 
-module.exports = (getUsers, newAttempt) => {
+module.exports = (getUsers) => {
   describe('exchange of tokens in eth => bnc direction with restart', function () {
     let info
     let users
@@ -53,9 +53,9 @@ module.exports = (getUsers, newAttempt) => {
     it('should restart signature generation and regenerate signature properly', async function () {
       this.timeout(360000)
       if (newValidatorNonces[0] > validatorNonces[0] + 2) {
-        await signerController1.restart(newAttempt)
+        await signerController1.restart()
       } else {
-        await signerController2.restart(newAttempt)
+        await signerController2.restart()
       }
       await waitPromise(
         () => getBncSequence(info.foreignBridgeAddress),
diff --git a/tests/test/index.js b/tests/test/index.js
index b5bb877..52841d4 100644
--- a/tests/test/index.js
+++ b/tests/test/index.js
@@ -72,12 +72,12 @@ describe('bridge tests', function () {
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
-  testEthToBncWithRestart(() => users, 99)
+  testEthToBncWithRestart(() => users)
 
   testChangeThreshold(3)
 
   testEthToBnc(() => users)
   testBncToEth(() => users)
-  testEthToBncWithRestart(() => users, 2)
+  testEthToBncWithRestart(() => users)
   testEthToBnc(() => users)
 })
diff --git a/tests/test/utils/signerController.js b/tests/test/utils/signerController.js
index 12cfb1c..6a22a84 100644
--- a/tests/test/utils/signerController.js
+++ b/tests/test/utils/signerController.js
@@ -9,8 +9,8 @@ function createController(validatorId) {
   })
 
   return {
-    async restart(attempt) {
-      return (await sideClient.get(`/restart/${attempt}`)).data
+    async restart() {
+      await sideClient.get('/restart')
     }
   }
 }

From 3b6e64b7846359047a555ef4a3b9ee0326705201 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 26 Nov 2019 17:41:59 +0300
Subject: [PATCH 128/129] Keygen restart tests

---
 demo/validator1/.env.development              |  2 ++
 demo/validator1/.env.staging                  |  2 ++
 demo/validator2/.env.development              |  2 ++
 demo/validator2/.env.staging                  |  2 ++
 demo/validator3/.env.development              |  2 ++
 demo/validator3/.env.staging                  |  2 ++
 src/oracle/docker-compose-test.yml            |  2 ++
 src/oracle/docker-compose.yml                 |  2 ++
 src/oracle/tss-keygen/keygen.js               |  8 ++++++-
 .../binanceBalance/.env.development           |  2 +-
 .../binanceSend/.env.development              |  2 +-
 tests/.env                                    |  2 +-
 tests/test/changeThreshold.js                 | 18 +++++++++++++--
 tests/test/utils/keygenController.js          | 22 +++++++++++++++++++
 tests/test/utils/signerController.js          |  4 ++--
 15 files changed, 66 insertions(+), 8 deletions(-)
 create mode 100644 tests/test/utils/keygenController.js

diff --git a/demo/validator1/.env.development b/demo/validator1/.env.development
index fea34dc..b27189a 100644
--- a/demo/validator1/.env.development
+++ b/demo/validator1/.env.development
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5001
 
 SIGN_RESTART_PORT=6001
 
+KEYGEN_RESTART_PORT=7001
+
 LOG_LEVEL=trace
diff --git a/demo/validator1/.env.staging b/demo/validator1/.env.staging
index aef801b..b3c1acf 100644
--- a/demo/validator1/.env.staging
+++ b/demo/validator1/.env.staging
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5001
 
 SIGN_RESTART_PORT=6001
 
+KEYGEN_RESTART_PORT=7001
+
 LOG_LEVEL=info
diff --git a/demo/validator2/.env.development b/demo/validator2/.env.development
index ced9a6e..2ac5ed6 100644
--- a/demo/validator2/.env.development
+++ b/demo/validator2/.env.development
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5002
 
 SIGN_RESTART_PORT=6002
 
+KEYGEN_RESTART_PORT=7002
+
 LOG_LEVEL=trace
diff --git a/demo/validator2/.env.staging b/demo/validator2/.env.staging
index 8d064dd..7d0bf69 100644
--- a/demo/validator2/.env.staging
+++ b/demo/validator2/.env.staging
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5002
 
 SIGN_RESTART_PORT=6002
 
+KEYGEN_RESTART_PORT=7002
+
 LOG_LEVEL=info
diff --git a/demo/validator3/.env.development b/demo/validator3/.env.development
index d8eff01..2f3f501 100644
--- a/demo/validator3/.env.development
+++ b/demo/validator3/.env.development
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5003
 
 SIGN_RESTART_PORT=6003
 
+KEYGEN_RESTART_PORT=7003
+
 LOG_LEVEL=trace
diff --git a/demo/validator3/.env.staging b/demo/validator3/.env.staging
index 2eef51d..5ea48ed 100644
--- a/demo/validator3/.env.staging
+++ b/demo/validator3/.env.staging
@@ -27,4 +27,6 @@ VOTES_PROXY_PORT=5003
 
 SIGN_RESTART_PORT=6003
 
+KEYGEN_RESTART_PORT=7003
+
 LOG_LEVEL=info
diff --git a/src/oracle/docker-compose-test.yml b/src/oracle/docker-compose-test.yml
index 7923909..6daadfa 100644
--- a/src/oracle/docker-compose-test.yml
+++ b/src/oracle/docker-compose-test.yml
@@ -39,6 +39,8 @@ services:
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
+    ports:
+      - '${KEYGEN_RESTART_PORT}:8001'
     networks:
       - test_network
   signer:
diff --git a/src/oracle/docker-compose.yml b/src/oracle/docker-compose.yml
index 034b5b6..3532066 100644
--- a/src/oracle/docker-compose.yml
+++ b/src/oracle/docker-compose.yml
@@ -36,6 +36,8 @@ services:
       - LOG_LEVEL
     volumes:
       - '${PWD}/${TARGET_NETWORK}/keys:/keys'
+    ports:
+      - '${KEYGEN_RESTART_PORT}:8001'
     networks:
       - keygen-proxy-net
       - rabbit-keygen-net
diff --git a/src/oracle/tss-keygen/keygen.js b/src/oracle/tss-keygen/keygen.js
index f2e9828..18fcfc4 100644
--- a/src/oracle/tss-keygen/keygen.js
+++ b/src/oracle/tss-keygen/keygen.js
@@ -44,6 +44,12 @@ function killKeygen() {
   exec.execSync('pkill gg18_keygen || true')
 }
 
+function restart(req, res) {
+  logger.info('Manual cancelling current keygen attempt')
+  killKeygen()
+  res.send('Done')
+}
+
 function keygen(keysFile, epoch) {
   let restartTimeoutId
   let epochDaemonIntervalId
@@ -144,7 +150,7 @@ async function main() {
   })
 }
 
-
+app.get('/restart', restart)
 app.get('/start', (req, res) => {
   logger.info('Ready to start')
   ready = true
diff --git a/src/test-services/binanceBalance/.env.development b/src/test-services/binanceBalance/.env.development
index 9169981..b6021c1 100644
--- a/src/test-services/binanceBalance/.env.development
+++ b/src/test-services/binanceBalance/.env.development
@@ -1,2 +1,2 @@
 FOREIGN_URL=http://http-api:8000
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
diff --git a/src/test-services/binanceSend/.env.development b/src/test-services/binanceSend/.env.development
index db94446..9de3d9e 100644
--- a/src/test-services/binanceSend/.env.development
+++ b/src/test-services/binanceSend/.env.development
@@ -1,4 +1,4 @@
 FOREIGN_URL=http://http-api:8000
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
 
 FOREIGN_PRIVATE_KEY=dd5ec5a7abe9d1fff21170ae591085f000fc6fd9ca0107fe047593f44e328e40
diff --git a/tests/.env b/tests/.env
index f4cca67..a7cb16f 100644
--- a/tests/.env
+++ b/tests/.env
@@ -7,5 +7,5 @@ SIDE_RPC_URL=http://ganache_side:8545
 
 FOREIGN_URL=http://http-api:8000
 FOREIGN_CHAIN_ID=Binance-Dev
-FOREIGN_ASSET=DEV-BA8
+FOREIGN_ASSET=DEV-9BA
 FOREIGN_PRIVATE_KEY=dd5ec5a7abe9d1fff21170ae591085f000fc6fd9ca0107fe047593f44e328e40
diff --git a/tests/test/changeThreshold.js b/tests/test/changeThreshold.js
index fc0f357..6090f42 100644
--- a/tests/test/changeThreshold.js
+++ b/tests/test/changeThreshold.js
@@ -2,16 +2,21 @@ const assert = require('assert')
 
 const { waitPromise, delay } = require('./utils/wait')
 const { getBepBalance, getBncFlags } = require('./utils/bncController')
-
+const { getNonce } = require('./utils/sideController')
 const { controller1, controller2, controller3 } = require('./utils/proxyController')
+const { keygenController1 } = require('./utils/keygenController')
+
+const { validators } = require('../config')
 
 module.exports = (newThreshold) => {
   describe('change threshold', function () {
     let info
     let initialInfo
+    let validatorNonce
 
     before(async function () {
       initialInfo = await controller1.getInfo()
+      validatorNonce = await getNonce(validators[0])
       info = initialInfo
     })
 
@@ -89,8 +94,17 @@ module.exports = (newThreshold) => {
       assert.strictEqual(info.nextThreshold, newThreshold, 'Next threshold is not set correctly')
     })
 
-    it('should finish keygen process and start funds transfer', async function () {
+    it('should start keys generation', async function () {
       this.timeout(120000)
+      await waitPromise(
+        () => getNonce(validators[0]),
+        (nonce) => nonce > validatorNonce + 2
+      )
+    })
+
+    it('should restart keygen generation and regenerate keys properly, should start funds transfer', async function () {
+      this.timeout(360000)
+      await keygenController1.restart()
       info = await waitPromise(controller1.getInfo, (newInfo) => newInfo.bridgeStatus === 'funds_transfer')
       const flags = await getBncFlags(initialInfo.foreignBridgeAddress)
       assert.strictEqual(flags, 0, 'Foreign bridge flags are not set correctly')
diff --git a/tests/test/utils/keygenController.js b/tests/test/utils/keygenController.js
new file mode 100644
index 0000000..e670eaa
--- /dev/null
+++ b/tests/test/utils/keygenController.js
@@ -0,0 +1,22 @@
+const axios = require('axios')
+
+function createController(validatorId) {
+  const url = `http://validator${validatorId}_keygen_1:8001/`
+
+  const keygenClient = axios.create({
+    baseURL: url,
+    timeout: 10000
+  })
+
+  return {
+    async restart() {
+      await keygenClient.get('/restart')
+    }
+  }
+}
+
+module.exports = {
+  keygenController1: createController(1),
+  keygenController2: createController(2),
+  keygenController3: createController(3)
+}
diff --git a/tests/test/utils/signerController.js b/tests/test/utils/signerController.js
index 6a22a84..98f3eed 100644
--- a/tests/test/utils/signerController.js
+++ b/tests/test/utils/signerController.js
@@ -3,14 +3,14 @@ const axios = require('axios')
 function createController(validatorId) {
   const url = `http://validator${validatorId}_signer_1:8001/`
 
-  const sideClient = axios.create({
+  const signerClient = axios.create({
     baseURL: url,
     timeout: 10000
   })
 
   return {
     async restart() {
-      await sideClient.get('/restart')
+      await signerClient.get('/restart')
     }
   }
 }

From 20c540529d99da18d5ff0bfb13bbbeefcd33eff7 Mon Sep 17 00:00:00 2001
From: Kirill Fedoseev <k.fedoseev@innopolis.university>
Date: Tue, 26 Nov 2019 18:35:05 +0300
Subject: [PATCH 129/129] Waiting in side oracle until connection with rpc is
 successful

---
 .circleci/config.yml                      |  2 +-
 src/ethereum-testnet/side-oracle/index.js | 22 +++++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index cb370fa..bccbbec 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -90,7 +90,7 @@ orbs:
           - save_docker_logs:
               validator: 3
           - run:
-              name: "Save ganache logs"
+              name: "Save ethereum logs"
               command: |
                 mkdir -p ./artifacts/logs/ethereum
                 docker logs ethereum-testnet_side-oracle_1 > ./artifacts/logs/ethereum/side-oracle.log
diff --git a/src/ethereum-testnet/side-oracle/index.js b/src/ethereum-testnet/side-oracle/index.js
index 30632a3..d90ecfc 100644
--- a/src/ethereum-testnet/side-oracle/index.js
+++ b/src/ethereum-testnet/side-oracle/index.js
@@ -58,14 +58,22 @@ async function handleNewMessage(event) {
 }
 
 async function initialize() {
-  await delay(5000)
-  sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
-  homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
-  homeWallet = new ethers.Wallet(HOME_PRIVATE_KEY, homeProvider)
-  bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeWallet)
-  sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideProvider)
+  while (true) {
+    try {
+      sideProvider = new ethers.providers.JsonRpcProvider(SIDE_RPC_URL)
+      homeProvider = new ethers.providers.JsonRpcProvider(HOME_RPC_URL)
 
-  nonce = await homeWallet.getTransactionCount()
+      homeWallet = new ethers.Wallet(HOME_PRIVATE_KEY, homeProvider)
+      bridge = new ethers.Contract(HOME_BRIDGE_ADDRESS, bridgeAbi, homeWallet)
+      sharedDb = new ethers.Contract(SIDE_SHARED_DB_ADDRESS, sharedDbAbi, sideProvider)
+
+      nonce = await homeWallet.getTransactionCount()
+      break
+    } catch (e) {
+      console.log('Cannot create providers')
+      await delay(1000)
+    }
+  }
 }
 
 async function loop() {