From e80d0a68a9a34b68b817417138131520efe85ab2 Mon Sep 17 00:00:00 2001
From: William O'Beirne <wbobeirne@gmail.com>
Date: Tue, 19 Sep 2017 20:47:08 -0400
Subject: [PATCH] All v3 Nodes & Networks (#202)

* Add all v3s nodes, create node libs for etherscan and infura.

* Add all network configs for alternatives.

* Color and animate nav border on network selection.

* Address PR comments.

* Persist network selection to local storage.

* Modifiy TransactionSucceeded to link to network-specific explorer.

* - Reload on Node Change to reset state. Should be refactored in the future so that we are not forcing clients to reload.
---
 .../TransactionSucceeded.js                   |  13 +-
 .../Header/components/Navigation.jsx          |  14 +-
 .../Header/components/Navigation.scss         |   1 +
 common/components/Header/index.jsx            |   7 +-
 common/config/contracts/exp.json              |   1 +
 common/config/contracts/rsk.json              |   1 +
 common/config/contracts/ubq.json              |   1 +
 common/config/data.js                         | 164 ++++++-
 common/config/tokens/etc.json                 |   8 +
 common/config/tokens/eth.js                   | 439 ------------------
 common/config/tokens/eth.json                 | 437 +++++++++++++++++
 common/config/tokens/exp.json                 |   1 +
 common/config/tokens/kovan.json               |  14 +
 common/config/tokens/rinkeby.json             |   1 +
 common/config/tokens/ropsten.json             |   1 +
 common/config/tokens/rsk.json                 |   1 +
 common/config/tokens/ubq.json                 |  14 +
 common/libs/nodes/etherscan/client.js         |  29 ++
 common/libs/nodes/etherscan/index.js          |  14 +
 common/libs/nodes/etherscan/requests.js       |  67 +++
 common/libs/nodes/etherscan/types.js          |  42 ++
 common/libs/nodes/index.js                    |   2 +
 common/libs/nodes/infura/client.js            |   9 +
 common/libs/nodes/infura/index.js             |  11 +
 common/libs/nodes/rpc/client.js               | 100 +---
 common/libs/nodes/rpc/index.js                |  97 ++--
 common/libs/nodes/rpc/requests.js             |  62 +++
 common/libs/nodes/rpc/types.js                |   2 -
 common/sagas/config.js                        |   5 +-
 common/sagas/wallet.js                        |  12 +-
 common/store.js                               |   1 +
 package-lock.json                             |  18 +-
 32 files changed, 993 insertions(+), 596 deletions(-)
 create mode 100644 common/config/contracts/exp.json
 create mode 100644 common/config/contracts/rsk.json
 create mode 100644 common/config/contracts/ubq.json
 create mode 100644 common/config/tokens/etc.json
 delete mode 100644 common/config/tokens/eth.js
 create mode 100644 common/config/tokens/eth.json
 create mode 100644 common/config/tokens/exp.json
 create mode 100644 common/config/tokens/kovan.json
 create mode 100644 common/config/tokens/rinkeby.json
 create mode 100644 common/config/tokens/ropsten.json
 create mode 100644 common/config/tokens/rsk.json
 create mode 100644 common/config/tokens/ubq.json
 create mode 100644 common/libs/nodes/etherscan/client.js
 create mode 100644 common/libs/nodes/etherscan/index.js
 create mode 100644 common/libs/nodes/etherscan/requests.js
 create mode 100644 common/libs/nodes/etherscan/types.js
 create mode 100644 common/libs/nodes/infura/client.js
 create mode 100644 common/libs/nodes/infura/index.js
 create mode 100644 common/libs/nodes/rpc/requests.js

diff --git a/common/components/ExtendedNotifications/TransactionSucceeded.js b/common/components/ExtendedNotifications/TransactionSucceeded.js
index 5801e8d0..41cb83fb 100644
--- a/common/components/ExtendedNotifications/TransactionSucceeded.js
+++ b/common/components/ExtendedNotifications/TransactionSucceeded.js
@@ -1,13 +1,18 @@
 import React from 'react';
-import { ETHTxExplorer } from 'config/data';
+import type { BlockExplorerConfig } from 'config.data';
 import translate from 'translations';
+
 export type TransactionSucceededProps = {
-  txHash: string
+  txHash: string,
+  blockExplorer: BlockExplorerConfig
 };
 
-const TransactionSucceeded = ({ txHash }: TransactionSucceededProps) => {
+const TransactionSucceeded = ({
+  txHash,
+  blockExplorer
+}: TransactionSucceededProps) => {
   // const checkTxLink = `https://www.myetherwallet.com?txHash=${txHash}/#check-tx-status`;
-  const txHashLink = ETHTxExplorer(txHash);
+  const txHashLink = blockExplorer.tx(txHash);
 
   return (
     <div>
diff --git a/common/components/Header/components/Navigation.jsx b/common/components/Header/components/Navigation.jsx
index f3bcadf8..bcf9eb88 100644
--- a/common/components/Header/components/Navigation.jsx
+++ b/common/components/Header/components/Navigation.jsx
@@ -39,7 +39,7 @@ const tabs = [
   }
 ];
 
-export default class TabsOptions extends Component {
+export default class Navigation extends Component {
   constructor(props) {
     super(props);
     this.state = {
@@ -49,7 +49,8 @@ export default class TabsOptions extends Component {
   }
 
   static propTypes = {
-    location: PropTypes.object
+    location: PropTypes.object,
+    color: PropTypes.string
   };
 
   scrollLeft() {}
@@ -57,12 +58,19 @@ export default class TabsOptions extends Component {
   scrollRight() {}
 
   render() {
-    const { location } = this.props;
+    const { location, color } = this.props;
+    const borderStyle = {};
+
+    if (color) {
+      borderStyle.borderTopColor = color;
+    }
+
     return (
       <nav
         role="navigation"
         aria-label="main navigation"
         className="Navigation"
+        style={borderStyle}
       >
         {this.state.showLeftArrow &&
           <a
diff --git a/common/components/Header/components/Navigation.scss b/common/components/Header/components/Navigation.scss
index 5d0a6335..c9ac603c 100644
--- a/common/components/Header/components/Navigation.scss
+++ b/common/components/Header/components/Navigation.scss
@@ -5,6 +5,7 @@
   position: relative;
   overflow-y: hidden;
   border-top: .25rem solid $brand-primary;
+  transition: border 300ms ease;
 
   &-scroll {
     -ms-overflow-style: -ms-autohiding-scrollbar;
diff --git a/common/components/Header/index.jsx b/common/components/Header/index.jsx
index 36408588..908e6e0c 100644
--- a/common/components/Header/index.jsx
+++ b/common/components/Header/index.jsx
@@ -7,6 +7,7 @@ import { Dropdown } from 'components/ui';
 import {
   languages,
   NODES,
+  NETWORKS,
   VERSION,
   ANNOUNCEMENT_TYPE,
   ANNOUNCEMENT_MESSAGE
@@ -32,6 +33,7 @@ export default class Header extends Component {
     const selectedLanguage =
       languages.find(l => l.sign === languageSelection) || languages[0];
     const selectedNode = NODES[nodeSelection];
+    const selectedNetwork = NETWORKS[selectedNode.network];
 
     return (
       <div className="Header">
@@ -107,7 +109,10 @@ export default class Header extends Component {
           </section>
         </section>
 
-        <Navigation location={this.props.location} />
+        <Navigation
+          location={this.props.location}
+          color={selectedNetwork.color}
+        />
       </div>
     );
   }
diff --git a/common/config/contracts/exp.json b/common/config/contracts/exp.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/contracts/exp.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/contracts/rsk.json b/common/config/contracts/rsk.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/contracts/rsk.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/contracts/ubq.json b/common/config/contracts/ubq.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/contracts/ubq.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/data.js b/common/config/data.js
index f13f5c1b..fe703d23 100644
--- a/common/config/data.js
+++ b/common/config/data.js
@@ -1,5 +1,5 @@
 // @flow
-import { RPCNode } from 'libs/nodes';
+import { RPCNode, InfuraNode, EtherscanNode } from 'libs/nodes';
 
 // Displays in the header
 export const VERSION = '4.0.0 (Alpha 0.0.2)';
@@ -19,6 +19,7 @@ const etherScan = 'https://etherscan.io';
 const blockChainInfo = 'https://blockchain.info';
 const ethPlorer = 'https://ethplorer.io';
 
+// TODO: Stop exporting these! Everything should use active node config.
 export const ETHTxExplorer = (txHash: string): string =>
   `${etherScan}/tx/${txHash}`;
 export const BTCTxExplorer = (txHash: string): string =>
@@ -148,14 +149,17 @@ export type NetworkContract = {
   abi: string
 };
 
+type BlockExplorerConfig = {
+  name: string,
+  tx: Function,
+  address: Function
+};
+
 export type NetworkConfig = {
   name: string,
   unit: string,
-  blockExplorer?: {
-    name: string,
-    tx: Function,
-    address: Function
-  },
+  color: string,
+  blockExplorer?: BlockExplorerConfig,
   tokenExplorer?: {
     name: string,
     address: Function
@@ -172,22 +176,92 @@ export type NodeConfig = {
   estimateGas: ?boolean
 };
 
+// Must be a website that follows the ethplorer convention of /tx/[hash] and
+// address/[address] to generate the correct functions.
+function makeExplorer(url): BlockExplorerConfig {
+  return {
+    name: url,
+    tx: hash => `${url}/tx/${hash}`,
+    address: address => `${url}/address/${address}`
+  };
+}
+
 export const NETWORKS: { [key: string]: NetworkConfig } = {
   ETH: {
     name: 'ETH',
     unit: 'ETH',
     chainId: 1,
-    blockExplorer: {
-      name: etherScan,
-      tx: ETHTxExplorer,
-      address: ETHAddressExplorer
-    },
+    color: '#0e97c0',
+    blockExplorer: makeExplorer('https://etherscan.io'),
     tokenExplorer: {
       name: ethPlorer,
       address: ETHTokenExplorer
     },
-    tokens: require('./tokens/eth').default,
+    tokens: require('./tokens/eth.json'),
     contracts: require('./contracts/eth.json')
+  },
+  ETC: {
+    name: 'ETC',
+    unit: 'ETC',
+    chainId: 61,
+    color: '#669073',
+    blockExplorer: makeExplorer('https://gastracker.io'),
+    tokens: require('./tokens/etc.json'),
+    contracts: require('./contracts/etc.json')
+  },
+  Ropsten: {
+    name: 'Ropsten',
+    unit: 'ETH',
+    chainId: 3,
+    color: '#adc101',
+    blockExplorer: makeExplorer('https://ropsten.etherscan.io'),
+    tokens: require('./tokens/ropsten.json'),
+    contracts: require('./contracts/ropsten.json')
+  },
+  Kovan: {
+    name: 'Kovan',
+    unit: 'ETH',
+    chainId: 42,
+    color: '#adc101',
+    blockExplorer: makeExplorer('https://kovan.etherscan.io'),
+    tokens: require('./tokens/ropsten.json'),
+    contracts: require('./contracts/ropsten.json')
+  },
+  Rinkeby: {
+    name: 'Rinkeby',
+    unit: 'ETH',
+    chainId: 4,
+    color: '#adc101',
+    blockExplorer: makeExplorer('https://rinkeby.etherscan.io'),
+    tokens: require('./tokens/rinkeby.json'),
+    contracts: require('./contracts/rinkeby.json')
+  },
+  RSK: {
+    name: 'RSK',
+    unit: 'RSK',
+    chainId: 31,
+    color: '#ff794f',
+    blockExplorer: makeExplorer('https://explorer.rsk.co'),
+    tokens: require('./tokens/rsk.json'),
+    contracts: require('./contracts/rsk.json')
+  },
+  EXP: {
+    name: 'EXP',
+    unit: 'EXP',
+    chainId: 2,
+    color: '#673ab7',
+    blockExplorer: makeExplorer('http://www.gander.tech'),
+    tokens: require('./tokens/exp.json'),
+    contracts: require('./contracts/exp.json')
+  },
+  UBQ: {
+    name: 'UBQ',
+    unit: 'UBQ',
+    chainId: 8,
+    color: '#b37aff',
+    blockExplorer: makeExplorer('https://ubiqscan.io/en'),
+    tokens: require('./tokens/ubq.json'),
+    contracts: require('./contracts/ubq.json')
   }
 };
 
@@ -197,5 +271,71 @@ export const NODES: { [key: string]: NodeConfig } = {
     lib: new RPCNode('https://api.myetherapi.com/eth'),
     service: 'MyEtherWallet',
     estimateGas: true
+  },
+  eth_ethscan: {
+    network: 'ETH',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://api.etherscan.io/api'),
+    estimateGas: false
+  },
+  eth_infura: {
+    network: 'ETH',
+    service: 'infura.io',
+    lib: new InfuraNode('https://mainnet.infura.io/mew'),
+    estimateGas: false
+  },
+  etc_epool: {
+    network: 'ETC',
+    service: 'Epool.io',
+    lib: new RPCNode('https://mewapi.epool.io'),
+    estimateGas: false
+  },
+  rop_mew: {
+    network: 'Ropsten',
+    service: 'MyEtherWallet',
+    lib: new RPCNode('https://api.myetherapi.com/rop'),
+    estimateGas: false
+  },
+  rop_infura: {
+    network: 'Ropsten',
+    service: 'infura.io',
+    lib: new InfuraNode('https://ropsten.infura.io/mew'),
+    estimateGas: false
+  },
+  kov_ethscan: {
+    network: 'Kovan',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://kovan.etherscan.io/api'),
+    estimateGas: false
+  },
+  rin_ethscan: {
+    network: 'Rinkeby',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://rinkeby.etherscan.io/api'),
+    estimateGas: false
+  },
+  rin_infura: {
+    network: 'Rinkeby',
+    service: 'infura.io',
+    lib: new InfuraNode('https://rinkeby.infura.io/mew'),
+    estimateGas: false
+  },
+  rsk: {
+    network: 'RSK',
+    service: 'GK2.sk',
+    lib: new RPCNode('https://rsk-test.gk2.sk/'),
+    estimateGas: true
+  },
+  exp: {
+    network: 'EXP',
+    service: 'Expanse.tech',
+    lib: new RPCNode('https://node.expanse.tech/'),
+    estimateGas: true
+  },
+  ubq: {
+    network: 'UBQ',
+    service: 'ubiqscan.io',
+    lib: new RPCNode('https://pyrus2.ubiqscan.io'),
+    estimateGas: true
   }
 };
diff --git a/common/config/tokens/etc.json b/common/config/tokens/etc.json
new file mode 100644
index 00000000..4bd011aa
--- /dev/null
+++ b/common/config/tokens/etc.json
@@ -0,0 +1,8 @@
+[
+  {
+    "address": "0x085fb4f24031eaedbc2b611aa528f22343eb52db",
+    "symbol": "BEC",
+    "decimal": 8,
+    "type": "default"
+  }
+]
diff --git a/common/config/tokens/eth.js b/common/config/tokens/eth.js
deleted file mode 100644
index 85ed113f..00000000
--- a/common/config/tokens/eth.js
+++ /dev/null
@@ -1,439 +0,0 @@
-export default [
-  {
-    address: '0xAf30D2a7E90d7DC361c8C4585e9BB7D2F6f15bc7',
-    symbol: '1ST',
-    decimal: 18
-  },
-  {
-    address: '0x422866a8F0b032c5cf1DfBDEf31A20F4509562b0',
-    symbol: 'ADST',
-    decimal: 0
-  },
-  {
-    address: '0xD0D6D6C5Fe4a677D343cC433536BB717bAe167dD',
-    symbol: 'ADT',
-    decimal: 9
-  },
-  {
-    address: '0x4470bb87d77b963a013db939be332f927f2b992e',
-    symbol: 'ADX',
-    decimal: 4
-  },
-  {
-    address: '0x960b236A07cf122663c4303350609A66A7B288C0',
-    symbol: 'ANT',
-    decimal: 18
-  },
-  {
-    address: '0xAc709FcB44a43c35F0DA4e3163b117A17F3770f5',
-    symbol: 'ARC',
-    decimal: 18
-  },
-  {
-    address: '0x0D8775F648430679A709E98d2b0Cb6250d2887EF',
-    symbol: 'BAT',
-    decimal: 18
-  },
-  {
-    address: '0x74C1E4b8caE59269ec1D85D3D4F324396048F4ac',
-    symbol: 'BeerCoin 🍺 ',
-    decimal: 0
-  },
-  {
-    address: '0x1e797Ce986C3CFF4472F7D38d5C4aba55DfEFE40',
-    symbol: 'BCDN',
-    decimal: 15
-  },
-  {
-    address: '0xdD6Bf56CA2ada24c683FAC50E37783e55B57AF9F',
-    symbol: 'BNC',
-    decimal: 12
-  },
-  {
-    address: '0x1F573D6Fb3F13d689FF844B4cE37794d79a7FF1C',
-    symbol: 'BNT',
-    decimal: 18
-  },
-  {
-    address: '0x5af2be193a6abca9c8817001f45744777db30756',
-    symbol: 'BQX',
-    decimal: 8
-  },
-  {
-    address: '0x12FEF5e57bF45873Cd9B62E9DBd7BFb99e32D73e',
-    symbol: 'CFI',
-    decimal: 18
-  },
-  {
-    address: '0xAef38fBFBF932D1AeF3B808Bc8fBd8Cd8E1f8BC5',
-    symbol: 'CRB',
-    decimal: 8
-  },
-  {
-    address: '0xbf4cfd7d1edeeea5f6600827411b41a21eb08abd',
-    symbol: 'CTL',
-    decimal: 2
-  },
-  {
-    address: '0xE4c94d45f7Aef7018a5D66f44aF780ec6023378e',
-    symbol: 'CryptoCarbon',
-    decimal: 6
-  },
-  {
-    address: '0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413',
-    symbol: 'DAO',
-    decimal: 16
-  },
-  {
-    address: '0x5c40eF6f527f4FbA68368774E6130cE6515123f2',
-    symbol: 'DAO_extraBalance',
-    decimal: 0
-  },
-  {
-    address: '0xcC4eF9EEAF656aC1a2Ab886743E98e97E090ed38',
-    symbol: 'DDF',
-    decimal: 18
-  },
-  {
-    address: '0xE0B7927c4aF23765Cb51314A0E0521A9645F0E2A',
-    symbol: 'DGD',
-    decimal: 9
-  },
-  {
-    address: '0x55b9a11c2e8351b4Ffc7b11561148bfaC9977855',
-    symbol: 'DGX 1.0',
-    decimal: 9
-  },
-  {
-    address: '0x2e071D2966Aa7D8dECB1005885bA1977D6038A65',
-    symbol: 'DICE',
-    decimal: 16
-  },
-  {
-    address: '0x621d78f2ef2fd937bfca696cabaf9a779f59b3ed',
-    symbol: 'DRP',
-    decimal: 2
-  },
-  {
-    address: '0x08711D3B02C8758F2FB3ab4e80228418a7F8e39c',
-    symbol: 'EDG',
-    decimal: 0
-  },
-  {
-    address: '0xB802b24E0637c2B87D2E8b7784C055BBE921011a',
-    symbol: 'EMV',
-    decimal: 2
-  },
-  {
-    address: '0x190e569bE071F40c704e15825F285481CB74B6cC',
-    symbol: 'FAM',
-    decimal: 12
-  },
-  {
-    address: '0xBbB1BD2D741F05E144E6C4517676a15554fD4B8D',
-    symbol: 'FUN',
-    decimal: 8
-  },
-  {
-    address: '0x6810e776880C02933D47DB1b9fc05908e5386b96',
-    symbol: 'GNO',
-    decimal: 18
-  },
-  {
-    address: '0xa74476443119A942dE498590Fe1f2454d7D4aC0d',
-    symbol: 'GNT',
-    decimal: 18
-  },
-  {
-    address: '0xf7B098298f7C69Fc14610bf71d5e02c60792894C',
-    symbol: 'GUP',
-    decimal: 3
-  },
-  {
-    address: '0x1D921EeD55a6a9ccaA9C79B1A4f7B25556e44365',
-    symbol: 'GT',
-    decimal: 0
-  },
-  {
-    address: '0x14F37B574242D366558dB61f3335289a5035c506',
-    symbol: 'HKG',
-    decimal: 3
-  },
-  {
-    address: '0xcbCC0F036ED4788F63FC0fEE32873d6A7487b908',
-    symbol: 'HMQ',
-    decimal: 8
-  },
-  {
-    address: '0x888666CA69E0f178DED6D75b5726Cee99A87D698',
-    symbol: 'ICN',
-    decimal: 18
-  },
-  {
-    address: '0xc1E6C6C681B286Fb503B36a9dD6c1dbFF85E73CF',
-    symbol: 'JET',
-    decimal: 18
-  },
-  {
-    address: '0x773450335eD4ec3DB45aF74f34F2c85348645D39',
-    symbol: 'JetCoins',
-    decimal: 18
-  },
-  {
-    address: '0xfa05A73FfE78ef8f1a739473e462c54bae6567D9',
-    symbol: 'LUN',
-    decimal: 18
-  },
-  {
-    address: '0x93E682107d1E9defB0b5ee701C71707a4B2E46Bc',
-    symbol: 'MCAP',
-    decimal: 8
-  },
-  {
-    address: '0xB63B606Ac810a52cCa15e44bB630fd42D8d1d83d',
-    symbol: 'MCO',
-    decimal: 8
-  },
-  {
-    address: '0x40395044ac3c0c57051906da938b54bd6557f212',
-    symbol: 'MGO',
-    decimal: 8
-  },
-  {
-    address: '0xd0b171Eb0b0F2CbD35cCD97cDC5EDC3ffe4871aa',
-    symbol: 'MDA',
-    decimal: 18
-  },
-  {
-    address: '0xe23cd160761f63FC3a1cF78Aa034b6cdF97d3E0C',
-    symbol: 'MIT',
-    decimal: 18
-  },
-  {
-    address: '0xC66eA802717bFb9833400264Dd12c2bCeAa34a6d',
-    symbol: 'MKR',
-    decimal: 18
-  },
-  {
-    address: '0xBEB9eF514a379B997e0798FDcC901Ee474B6D9A1',
-    symbol: 'MLN',
-    decimal: 18
-  },
-  {
-    address: '0x1a95B271B0535D15fa49932Daba31BA612b52946',
-    symbol: 'MNE',
-    decimal: 8
-  },
-  {
-    address: '0x68AA3F232dA9bdC2343465545794ef3eEa5209BD',
-    symbol: 'MSP',
-    decimal: 18
-  },
-  {
-    address: '0xf433089366899d83a9f26a773d59ec7ecf30355e',
-    symbol: 'MTL',
-    decimal: 8
-  },
-  {
-    address: '0xa645264C5603E96c3b0B078cdab68733794B0A71',
-    symbol: 'MYST',
-    decimal: 8
-  },
-  {
-    address: '0xcfb98637bcae43C13323EAa1731cED2B716962fD',
-    symbol: 'NET',
-    decimal: 18
-  },
-  {
-    address: '0x1776e1F26f98b1A5dF9cD347953a26dd3Cb46671',
-    symbol: 'NMR',
-    decimal: 18
-  },
-  {
-    address: '0x45e42D659D9f9466cD5DF622506033145a9b89Bc',
-    symbol: 'NxC',
-    decimal: 3
-  },
-  {
-    address: '0x701C244b988a513c945973dEFA05de933b23Fe1D',
-    symbol: 'OAX',
-    decimal: 18
-  },
-  {
-    address: '0xd26114cd6EE289AccF82350c8d8487fedB8A0C07',
-    symbol: 'OMG',
-    decimal: 18
-  },
-  {
-    address: '0xB97048628DB6B661D4C2aA833e95Dbe1A905B280',
-    symbol: 'PAY',
-    decimal: 18
-  },
-  {
-    address: '0x8Ae4BF2C33a8e667de34B54938B0ccD03Eb8CC06',
-    symbol: 'PTOY',
-    decimal: 8
-  },
-  {
-    address: '0xD8912C10681D8B21Fd3742244f44658dBA12264E',
-    symbol: 'PLU',
-    decimal: 18
-  },
-  {
-    address: '0x671AbBe5CE652491985342e85428EB1b07bC6c64',
-    symbol: 'QAU',
-    decimal: 8
-  },
-  {
-    address: '0x697beac28B09E122C4332D163985e8a73121b97F',
-    symbol: 'QRL',
-    decimal: 8
-  },
-  {
-    address: '0x48c80F1f4D53D5951e5D5438B54Cba84f29F32a5',
-    symbol: 'REP',
-    decimal: 18
-  },
-  {
-    address: '0x607F4C5BB672230e8672085532f7e901544a7375',
-    symbol: 'RLC',
-    decimal: 9
-  },
-  {
-    address: '0xcCeD5B8288086BE8c38E23567e684C3740be4D48',
-    symbol: 'RLT',
-    decimal: 10
-  },
-  {
-    address: '0x4993CB95c7443bdC06155c5f5688Be9D8f6999a5',
-    symbol: 'ROUND',
-    decimal: 18
-  },
-
-  {
-    address: '0xa1ccc166faf0e998b3e33225a1a0301b1c86119d',
-    symbol: 'SGEL',
-    decimal: 18
-  },
-
-  {
-    address: '0xd248B0D48E44aaF9c49aea0312be7E13a6dc1468',
-    symbol: 'SGT',
-    decimal: 1
-  },
-  {
-    address: '0xef2e9966eb61bb494e5375d5df8d67b7db8a780d',
-    symbol: 'SHIT',
-    decimal: 0
-  },
-  {
-    address: '0x2bDC0D42996017fCe214b21607a515DA41A9E0C5',
-    symbol: 'SKIN',
-    decimal: 6
-  },
-  {
-    address: '0x4994e81897a920c0FEA235eb8CEdEEd3c6fFF697',
-    symbol: 'SKO1',
-    decimal: 18
-  },
-  {
-    address: '0xaeC2E87E0A235266D9C5ADc9DEb4b2E29b54D009',
-    symbol: 'SNGLS',
-    decimal: 0
-  },
-  {
-    address: '0x983f6d60db79ea8ca4eb9968c6aff8cfa04b3c63',
-    symbol: 'SNM',
-    decimal: 18
-  },
-  {
-    address: '0x744d70fdbe2ba4cf95131626614a1763df805b9e',
-    symbol: 'SNT',
-    decimal: 18
-  },
-  {
-    address: '0x1dCE4Fa03639B7F0C38ee5bB6065045EdCf9819a',
-    symbol: 'SRC',
-    decimal: 8
-  },
-  {
-    address: '0xb64ef51c888972c908cfacf59b47c1afbc0ab8ac',
-    symbol: 'STORJ',
-    decimal: 8
-  },
-  {
-    address: '0xB9e7F8568e08d5659f5D29C4997173d84CdF2607',
-    symbol: 'SWT',
-    decimal: 18
-  },
-  {
-    address: '0xf4134146af2d511dd5ea8cdb1c4ac88c57d60404',
-    symbol: 'SNC',
-    decimal: 18
-  },
-  {
-    address: '0xE7775A6e9Bcf904eb39DA2b68c5efb4F9360e08C',
-    symbol: 'TaaS',
-    decimal: 6
-  },
-  {
-    address: '0xa7f976C360ebBeD4465c2855684D1AAE5271eFa9',
-    symbol: 'TFL',
-    decimal: 8
-  },
-  {
-    address: '0x6531f133e6DeeBe7F2dcE5A0441aA7ef330B4e53',
-    symbol: 'TIME',
-    decimal: 8
-  },
-  {
-    address: '0xaAAf91D9b90dF800Df4F55c205fd6989c977E73a',
-    symbol: 'TKN',
-    decimal: 8
-  },
-  {
-    address: '0xCb94be6f13A1182E4A4B6140cb7bf2025d28e41B',
-    symbol: 'TRST',
-    decimal: 6
-  },
-  {
-    address: '0x89205A3A3b2A69De6Dbf7f01ED13B2108B2c43e7',
-    symbol: 'Unicorn 🦄 ',
-    decimal: 0
-  },
-  {
-    address: '0x5c543e7AE0A1104f78406C340E9C64FD9fCE5170',
-    symbol: 'VSL',
-    decimal: 18
-  },
-  {
-    address: '0x82665764ea0b58157E1e5E9bab32F68c76Ec0CdF',
-    symbol: 'VSM',
-    decimal: 0
-  },
-  {
-    address: '0x8f3470A7388c05eE4e7AF3d01D8C722b0FF52374',
-    symbol: 'VERI',
-    decimal: 18
-  },
-  {
-    address: '0xeDBaF3c5100302dCddA53269322f3730b1F0416d',
-    symbol: 'VRS',
-    decimal: 5
-  },
-  {
-    address: '0x667088b212ce3d06a1b553a7221E1fD19000d9aF',
-    symbol: 'WINGS',
-    decimal: 18
-  },
-  {
-    address: '0x4DF812F6064def1e5e029f1ca858777CC98D2D81',
-    symbol: 'XAUR',
-    decimal: 8
-  },
-  {
-    address: '0xb110ec7b1dcb8fab8dedbf28f53bc63ea5bedd84',
-    symbol: 'XID',
-    decimal: 8
-  }
-];
diff --git a/common/config/tokens/eth.json b/common/config/tokens/eth.json
new file mode 100644
index 00000000..3ed81266
--- /dev/null
+++ b/common/config/tokens/eth.json
@@ -0,0 +1,437 @@
+[
+  {
+    "address": "0xAf30D2a7E90d7DC361c8C4585e9BB7D2F6f15bc7",
+    "symbol": "1ST",
+    "decimal": 18
+  },
+  {
+    "address": "0x422866a8F0b032c5cf1DfBDEf31A20F4509562b0",
+    "symbol": "ADST",
+    "decimal": 0
+  },
+  {
+    "address": "0xD0D6D6C5Fe4a677D343cC433536BB717bAe167dD",
+    "symbol": "ADT",
+    "decimal": 9
+  },
+  {
+    "address": "0x4470bb87d77b963a013db939be332f927f2b992e",
+    "symbol": "ADX",
+    "decimal": 4
+  },
+  {
+    "address": "0x960b236A07cf122663c4303350609A66A7B288C0",
+    "symbol": "ANT",
+    "decimal": 18
+  },
+  {
+    "address": "0xAc709FcB44a43c35F0DA4e3163b117A17F3770f5",
+    "symbol": "ARC",
+    "decimal": 18
+  },
+  {
+    "address": "0x0D8775F648430679A709E98d2b0Cb6250d2887EF",
+    "symbol": "BAT",
+    "decimal": 18
+  },
+  {
+    "address": "0x74C1E4b8caE59269ec1D85D3D4F324396048F4ac",
+    "symbol": "BeerCoin 🍺 ",
+    "decimal": 0
+  },
+  {
+    "address": "0x1e797Ce986C3CFF4472F7D38d5C4aba55DfEFE40",
+    "symbol": "BCDN",
+    "decimal": 15
+  },
+  {
+    "address": "0xdD6Bf56CA2ada24c683FAC50E37783e55B57AF9F",
+    "symbol": "BNC",
+    "decimal": 12
+  },
+  {
+    "address": "0x1F573D6Fb3F13d689FF844B4cE37794d79a7FF1C",
+    "symbol": "BNT",
+    "decimal": 18
+  },
+  {
+    "address": "0x5af2be193a6abca9c8817001f45744777db30756",
+    "symbol": "BQX",
+    "decimal": 8
+  },
+  {
+    "address": "0x12FEF5e57bF45873Cd9B62E9DBd7BFb99e32D73e",
+    "symbol": "CFI",
+    "decimal": 18
+  },
+  {
+    "address": "0xAef38fBFBF932D1AeF3B808Bc8fBd8Cd8E1f8BC5",
+    "symbol": "CRB",
+    "decimal": 8
+  },
+  {
+    "address": "0xbf4cfd7d1edeeea5f6600827411b41a21eb08abd",
+    "symbol": "CTL",
+    "decimal": 2
+  },
+  {
+    "address": "0xE4c94d45f7Aef7018a5D66f44aF780ec6023378e",
+    "symbol": "CryptoCarbon",
+    "decimal": 6
+  },
+  {
+    "address": "0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413",
+    "symbol": "DAO",
+    "decimal": 16
+  },
+  {
+    "address": "0x5c40eF6f527f4FbA68368774E6130cE6515123f2",
+    "symbol": "DAO_extraBalance",
+    "decimal": 0
+  },
+  {
+    "address": "0xcC4eF9EEAF656aC1a2Ab886743E98e97E090ed38",
+    "symbol": "DDF",
+    "decimal": 18
+  },
+  {
+    "address": "0xE0B7927c4aF23765Cb51314A0E0521A9645F0E2A",
+    "symbol": "DGD",
+    "decimal": 9
+  },
+  {
+    "address": "0x55b9a11c2e8351b4Ffc7b11561148bfaC9977855",
+    "symbol": "DGX 1.0",
+    "decimal": 9
+  },
+  {
+    "address": "0x2e071D2966Aa7D8dECB1005885bA1977D6038A65",
+    "symbol": "DICE",
+    "decimal": 16
+  },
+  {
+    "address": "0x621d78f2ef2fd937bfca696cabaf9a779f59b3ed",
+    "symbol": "DRP",
+    "decimal": 2
+  },
+  {
+    "address": "0x08711D3B02C8758F2FB3ab4e80228418a7F8e39c",
+    "symbol": "EDG",
+    "decimal": 0
+  },
+  {
+    "address": "0xB802b24E0637c2B87D2E8b7784C055BBE921011a",
+    "symbol": "EMV",
+    "decimal": 2
+  },
+  {
+    "address": "0x190e569bE071F40c704e15825F285481CB74B6cC",
+    "symbol": "FAM",
+    "decimal": 12
+  },
+  {
+    "address": "0xBbB1BD2D741F05E144E6C4517676a15554fD4B8D",
+    "symbol": "FUN",
+    "decimal": 8
+  },
+  {
+    "address": "0x6810e776880C02933D47DB1b9fc05908e5386b96",
+    "symbol": "GNO",
+    "decimal": 18
+  },
+  {
+    "address": "0xa74476443119A942dE498590Fe1f2454d7D4aC0d",
+    "symbol": "GNT",
+    "decimal": 18
+  },
+  {
+    "address": "0xf7B098298f7C69Fc14610bf71d5e02c60792894C",
+    "symbol": "GUP",
+    "decimal": 3
+  },
+  {
+    "address": "0x1D921EeD55a6a9ccaA9C79B1A4f7B25556e44365",
+    "symbol": "GT",
+    "decimal": 0
+  },
+  {
+    "address": "0x14F37B574242D366558dB61f3335289a5035c506",
+    "symbol": "HKG",
+    "decimal": 3
+  },
+  {
+    "address": "0xcbCC0F036ED4788F63FC0fEE32873d6A7487b908",
+    "symbol": "HMQ",
+    "decimal": 8
+  },
+  {
+    "address": "0x888666CA69E0f178DED6D75b5726Cee99A87D698",
+    "symbol": "ICN",
+    "decimal": 18
+  },
+  {
+    "address": "0xc1E6C6C681B286Fb503B36a9dD6c1dbFF85E73CF",
+    "symbol": "JET",
+    "decimal": 18
+  },
+  {
+    "address": "0x773450335eD4ec3DB45aF74f34F2c85348645D39",
+    "symbol": "JetCoins",
+    "decimal": 18
+  },
+  {
+    "address": "0xfa05A73FfE78ef8f1a739473e462c54bae6567D9",
+    "symbol": "LUN",
+    "decimal": 18
+  },
+  {
+    "address": "0x93E682107d1E9defB0b5ee701C71707a4B2E46Bc",
+    "symbol": "MCAP",
+    "decimal": 8
+  },
+  {
+    "address": "0xB63B606Ac810a52cCa15e44bB630fd42D8d1d83d",
+    "symbol": "MCO",
+    "decimal": 8
+  },
+  {
+    "address": "0x40395044ac3c0c57051906da938b54bd6557f212",
+    "symbol": "MGO",
+    "decimal": 8
+  },
+  {
+    "address": "0xd0b171Eb0b0F2CbD35cCD97cDC5EDC3ffe4871aa",
+    "symbol": "MDA",
+    "decimal": 18
+  },
+  {
+    "address": "0xe23cd160761f63FC3a1cF78Aa034b6cdF97d3E0C",
+    "symbol": "MIT",
+    "decimal": 18
+  },
+  {
+    "address": "0xC66eA802717bFb9833400264Dd12c2bCeAa34a6d",
+    "symbol": "MKR",
+    "decimal": 18
+  },
+  {
+    "address": "0xBEB9eF514a379B997e0798FDcC901Ee474B6D9A1",
+    "symbol": "MLN",
+    "decimal": 18
+  },
+  {
+    "address": "0x1a95B271B0535D15fa49932Daba31BA612b52946",
+    "symbol": "MNE",
+    "decimal": 8
+  },
+  {
+    "address": "0x68AA3F232dA9bdC2343465545794ef3eEa5209BD",
+    "symbol": "MSP",
+    "decimal": 18
+  },
+  {
+    "address": "0xf433089366899d83a9f26a773d59ec7ecf30355e",
+    "symbol": "MTL",
+    "decimal": 8
+  },
+  {
+    "address": "0xa645264C5603E96c3b0B078cdab68733794B0A71",
+    "symbol": "MYST",
+    "decimal": 8
+  },
+  {
+    "address": "0xcfb98637bcae43C13323EAa1731cED2B716962fD",
+    "symbol": "NET",
+    "decimal": 18
+  },
+  {
+    "address": "0x1776e1F26f98b1A5dF9cD347953a26dd3Cb46671",
+    "symbol": "NMR",
+    "decimal": 18
+  },
+  {
+    "address": "0x45e42D659D9f9466cD5DF622506033145a9b89Bc",
+    "symbol": "NxC",
+    "decimal": 3
+  },
+  {
+    "address": "0x701C244b988a513c945973dEFA05de933b23Fe1D",
+    "symbol": "OAX",
+    "decimal": 18
+  },
+  {
+    "address": "0xd26114cd6EE289AccF82350c8d8487fedB8A0C07",
+    "symbol": "OMG",
+    "decimal": 18
+  },
+  {
+    "address": "0xB97048628DB6B661D4C2aA833e95Dbe1A905B280",
+    "symbol": "PAY",
+    "decimal": 18
+  },
+  {
+    "address": "0x8Ae4BF2C33a8e667de34B54938B0ccD03Eb8CC06",
+    "symbol": "PTOY",
+    "decimal": 8
+  },
+  {
+    "address": "0xD8912C10681D8B21Fd3742244f44658dBA12264E",
+    "symbol": "PLU",
+    "decimal": 18
+  },
+  {
+    "address": "0x671AbBe5CE652491985342e85428EB1b07bC6c64",
+    "symbol": "QAU",
+    "decimal": 8
+  },
+  {
+    "address": "0x697beac28B09E122C4332D163985e8a73121b97F",
+    "symbol": "QRL",
+    "decimal": 8
+  },
+  {
+    "address": "0x48c80F1f4D53D5951e5D5438B54Cba84f29F32a5",
+    "symbol": "REP",
+    "decimal": 18
+  },
+  {
+    "address": "0x607F4C5BB672230e8672085532f7e901544a7375",
+    "symbol": "RLC",
+    "decimal": 9
+  },
+  {
+    "address": "0xcCeD5B8288086BE8c38E23567e684C3740be4D48",
+    "symbol": "RLT",
+    "decimal": 10
+  },
+  {
+    "address": "0x4993CB95c7443bdC06155c5f5688Be9D8f6999a5",
+    "symbol": "ROUND",
+    "decimal": 18
+  },
+  {
+    "address": "0xa1ccc166faf0e998b3e33225a1a0301b1c86119d",
+    "symbol": "SGEL",
+    "decimal": 18
+  },
+  {
+    "address": "0xd248B0D48E44aaF9c49aea0312be7E13a6dc1468",
+    "symbol": "SGT",
+    "decimal": 1
+  },
+  {
+    "address": "0xef2e9966eb61bb494e5375d5df8d67b7db8a780d",
+    "symbol": "SHIT",
+    "decimal": 0
+  },
+  {
+    "address": "0x2bDC0D42996017fCe214b21607a515DA41A9E0C5",
+    "symbol": "SKIN",
+    "decimal": 6
+  },
+  {
+    "address": "0x4994e81897a920c0FEA235eb8CEdEEd3c6fFF697",
+    "symbol": "SKO1",
+    "decimal": 18
+  },
+  {
+    "address": "0xaeC2E87E0A235266D9C5ADc9DEb4b2E29b54D009",
+    "symbol": "SNGLS",
+    "decimal": 0
+  },
+  {
+    "address": "0x983f6d60db79ea8ca4eb9968c6aff8cfa04b3c63",
+    "symbol": "SNM",
+    "decimal": 18
+  },
+  {
+    "address": "0x744d70fdbe2ba4cf95131626614a1763df805b9e",
+    "symbol": "SNT",
+    "decimal": 18
+  },
+  {
+    "address": "0x1dCE4Fa03639B7F0C38ee5bB6065045EdCf9819a",
+    "symbol": "SRC",
+    "decimal": 8
+  },
+  {
+    "address": "0xb64ef51c888972c908cfacf59b47c1afbc0ab8ac",
+    "symbol": "STORJ",
+    "decimal": 8
+  },
+  {
+    "address": "0xB9e7F8568e08d5659f5D29C4997173d84CdF2607",
+    "symbol": "SWT",
+    "decimal": 18
+  },
+  {
+    "address": "0xf4134146af2d511dd5ea8cdb1c4ac88c57d60404",
+    "symbol": "SNC",
+    "decimal": 18
+  },
+  {
+    "address": "0xE7775A6e9Bcf904eb39DA2b68c5efb4F9360e08C",
+    "symbol": "TaaS",
+    "decimal": 6
+  },
+  {
+    "address": "0xa7f976C360ebBeD4465c2855684D1AAE5271eFa9",
+    "symbol": "TFL",
+    "decimal": 8
+  },
+  {
+    "address": "0x6531f133e6DeeBe7F2dcE5A0441aA7ef330B4e53",
+    "symbol": "TIME",
+    "decimal": 8
+  },
+  {
+    "address": "0xaAAf91D9b90dF800Df4F55c205fd6989c977E73a",
+    "symbol": "TKN",
+    "decimal": 8
+  },
+  {
+    "address": "0xCb94be6f13A1182E4A4B6140cb7bf2025d28e41B",
+    "symbol": "TRST",
+    "decimal": 6
+  },
+  {
+    "address": "0x89205A3A3b2A69De6Dbf7f01ED13B2108B2c43e7",
+    "symbol": "Unicorn 🦄 ",
+    "decimal": 0
+  },
+  {
+    "address": "0x5c543e7AE0A1104f78406C340E9C64FD9fCE5170",
+    "symbol": "VSL",
+    "decimal": 18
+  },
+  {
+    "address": "0x82665764ea0b58157E1e5E9bab32F68c76Ec0CdF",
+    "symbol": "VSM",
+    "decimal": 0
+  },
+  {
+    "address": "0x8f3470A7388c05eE4e7AF3d01D8C722b0FF52374",
+    "symbol": "VERI",
+    "decimal": 18
+  },
+  {
+    "address": "0xeDBaF3c5100302dCddA53269322f3730b1F0416d",
+    "symbol": "VRS",
+    "decimal": 5
+  },
+  {
+    "address": "0x667088b212ce3d06a1b553a7221E1fD19000d9aF",
+    "symbol": "WINGS",
+    "decimal": 18
+  },
+  {
+    "address": "0x4DF812F6064def1e5e029f1ca858777CC98D2D81",
+    "symbol": "XAUR",
+    "decimal": 8
+  },
+  {
+    "address": "0xb110ec7b1dcb8fab8dedbf28f53bc63ea5bedd84",
+    "symbol": "XID",
+    "decimal": 8
+  }
+]
diff --git a/common/config/tokens/exp.json b/common/config/tokens/exp.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/tokens/exp.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/tokens/kovan.json b/common/config/tokens/kovan.json
new file mode 100644
index 00000000..8f60c17d
--- /dev/null
+++ b/common/config/tokens/kovan.json
@@ -0,0 +1,14 @@
+[
+  {
+    "address": "0x3C67f7D4decF7795225f51b54134F81137385f83",
+    "symbol": "GUP",
+    "decimal": 3,
+    "type": "default"
+  },
+  {
+    "address": "0x8667559254241ddeD4d11392f868d72092765367",
+    "symbol": "Aeternity",
+    "decimal": 18,
+    "type": "default"
+  }
+]
diff --git a/common/config/tokens/rinkeby.json b/common/config/tokens/rinkeby.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/tokens/rinkeby.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/tokens/ropsten.json b/common/config/tokens/ropsten.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/tokens/ropsten.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/tokens/rsk.json b/common/config/tokens/rsk.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/common/config/tokens/rsk.json
@@ -0,0 +1 @@
+[]
diff --git a/common/config/tokens/ubq.json b/common/config/tokens/ubq.json
new file mode 100644
index 00000000..da4d77a6
--- /dev/null
+++ b/common/config/tokens/ubq.json
@@ -0,0 +1,14 @@
+[
+  {
+    "address": "0xd245207cfbf6eb6f34970db2a807ab1d178fde6c",
+    "symbol": "APX",
+    "decimal": 8,
+    "type": "default"
+  },
+  {
+    "address": "0x4b4899a10f3e507db207b0ee2426029efa168a67",
+    "symbol": "QWARK",
+    "decimal": 8,
+    "type": "default"
+  }
+]
diff --git a/common/libs/nodes/etherscan/client.js b/common/libs/nodes/etherscan/client.js
new file mode 100644
index 00000000..5481979b
--- /dev/null
+++ b/common/libs/nodes/etherscan/client.js
@@ -0,0 +1,29 @@
+// @flow
+import RPCClient from '../rpc/client';
+import type { EtherscanRequest } from './types';
+import type { JsonRpcResponse } from '../rpc/types';
+
+export default class EtherscanClient extends RPCClient {
+  encodeRequest(request: EtherscanRequest): string {
+    const encoded = new URLSearchParams();
+    Object.keys(request).forEach(key => {
+      encoded.set(key, request[key]);
+    });
+    return encoded.toString();
+  }
+
+  async call(request: EtherscanRequest): Promise<JsonRpcResponse> {
+    return fetch(this.endpoint, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
+      },
+      body: this.encodeRequest(request)
+    }).then(r => r.json());
+  }
+
+  async batch(requests: EtherscanRequest[]): Promise<JsonRpcResponse[]> {
+    const promises = requests.map(req => this.call(req));
+    return Promise.all(promises);
+  }
+}
diff --git a/common/libs/nodes/etherscan/index.js b/common/libs/nodes/etherscan/index.js
new file mode 100644
index 00000000..ebeae5fe
--- /dev/null
+++ b/common/libs/nodes/etherscan/index.js
@@ -0,0 +1,14 @@
+import RPCNode from '../rpc';
+import EtherscanClient from './client';
+import EtherscanRequests from './requests';
+
+export default class EtherscanNode extends RPCNode {
+  client: EtherscanClient;
+  requests: EtherscanRequests;
+
+  constructor(endpoint: string) {
+    super(endpoint);
+    this.client = new EtherscanClient(endpoint);
+    this.requests = new EtherscanRequests();
+  }
+}
diff --git a/common/libs/nodes/etherscan/requests.js b/common/libs/nodes/etherscan/requests.js
new file mode 100644
index 00000000..c0d03b40
--- /dev/null
+++ b/common/libs/nodes/etherscan/requests.js
@@ -0,0 +1,67 @@
+// @flow
+import ERC20 from 'libs/erc20';
+import RPCRequests from '../rpc/requests';
+import type {
+  CallRequest,
+  GetBalanceRequest,
+  GetTokenBalanceRequest,
+  EstimateGasRequest,
+  GetTransactionCountRequest,
+  SendRawTxRequest
+} from './types';
+import type { Token } from 'config/data';
+
+export default class EtherscanRequests extends RPCRequests {
+  sendRawTx(signedTx: string): SendRawTxRequest {
+    return {
+      module: 'proxy',
+      method: 'eth_sendRawTransaction',
+      hex: signedTx
+    };
+  }
+
+  estimateGas<T: *>(transaction: T): EstimateGasRequest {
+    return {
+      module: 'proxy',
+      method: 'eth_estimateGas',
+      to: transaction.to,
+      value: transaction.value,
+      data: transaction.data,
+      from: transaction.from
+    };
+  }
+
+  getBalance(address: string): GetBalanceRequest {
+    return {
+      module: 'account',
+      action: 'balance',
+      tag: 'latest',
+      address
+    };
+  }
+
+  ethCall<T: *>(transaction: T): CallRequest {
+    return {
+      module: 'proxy',
+      action: 'eth_call',
+      to: transaction.to,
+      data: transaction.data
+    };
+  }
+
+  getTransactionCount(address: string): GetTransactionCountRequest {
+    return {
+      module: 'proxy',
+      action: 'eth_getTransactionCount',
+      tag: 'latest',
+      address
+    };
+  }
+
+  getTokenBalance(address: string, token: Token): GetTokenBalanceRequest {
+    return this.ethCall({
+      to: token.address,
+      data: ERC20.balanceOf(address)
+    });
+  }
+}
diff --git a/common/libs/nodes/etherscan/types.js b/common/libs/nodes/etherscan/types.js
new file mode 100644
index 00000000..9980aab0
--- /dev/null
+++ b/common/libs/nodes/etherscan/types.js
@@ -0,0 +1,42 @@
+export type EtherscanReqBase = {
+  module: string,
+  action: string
+};
+
+export type SendRawTxRequest = EtherscanReqBase & {
+  module: 'proxy',
+  method: 'eth_sendRawTransaction',
+  hex: string
+};
+
+export type GetBalanceRequest = EtherscanReqBase & {
+  module: 'account',
+  action: 'balance',
+  address: string,
+  tag: 'latest'
+};
+
+export type CallRequest = EtherscanReqBase & {
+  module: 'proxy',
+  action: 'eth_call',
+  to: string,
+  data: string
+};
+
+export type GetTokenBalanceRequest = CallRequest;
+
+export type EstimateGasRequest = EtherscanReqBase & {
+  module: 'proxy',
+  method: 'eth_estimateGas',
+  to: string,
+  value: string | number,
+  data: string,
+  from: string
+};
+
+export type GetTransactionCountRequest = EtherscanReqBase & {
+  module: 'proxy',
+  action: 'eth_getTransactionCount',
+  address: string,
+  tag: 'latest'
+};
diff --git a/common/libs/nodes/index.js b/common/libs/nodes/index.js
index 2b1acbab..9ebb60c0 100644
--- a/common/libs/nodes/index.js
+++ b/common/libs/nodes/index.js
@@ -1,2 +1,4 @@
 // @flow
 export { default as RPCNode } from './rpc';
+export { default as InfuraNode } from './infura';
+export { default as EtherscanNode } from './etherscan';
diff --git a/common/libs/nodes/infura/client.js b/common/libs/nodes/infura/client.js
new file mode 100644
index 00000000..5d72aa04
--- /dev/null
+++ b/common/libs/nodes/infura/client.js
@@ -0,0 +1,9 @@
+import RPCClient from '../rpc/client';
+import Big from 'bignumber.js';
+import { randomBytes } from 'crypto';
+
+export default class InfuraClient extends RPCClient {
+  id(): string {
+    return new Big('0x' + randomBytes(5).toString('hex')).toNumber();
+  }
+}
diff --git a/common/libs/nodes/infura/index.js b/common/libs/nodes/infura/index.js
new file mode 100644
index 00000000..5986e8df
--- /dev/null
+++ b/common/libs/nodes/infura/index.js
@@ -0,0 +1,11 @@
+import RPCNode from '../rpc';
+import InfuraClient from './client';
+
+export default class InfuraNode extends RPCNode {
+  client: InfuraClient;
+
+  constructor(endpoint: string) {
+    super(endpoint);
+    this.client = new InfuraClient(endpoint);
+  }
+}
diff --git a/common/libs/nodes/rpc/client.js b/common/libs/nodes/rpc/client.js
index 87930d74..0aca1c8e 100644
--- a/common/libs/nodes/rpc/client.js
+++ b/common/libs/nodes/rpc/client.js
@@ -1,88 +1,6 @@
 // @flow
 import { randomBytes } from 'crypto';
-import ERC20 from 'libs/erc20';
-import { hexEncodeData } from './utils';
-import type {
-  RPCRequest,
-  JsonRpcResponse,
-  CallRequest,
-  GetBalanceRequest,
-  GetTokenBalanceRequest,
-  EstimateGasRequest,
-  GetTransactionCountRequest,
-  SendRawTxRequest
-} from './types';
-import type { Token } from 'config/data';
-
-// FIXME is it safe to generate that much entropy?
-function id(): string {
-  return randomBytes(16).toString('hex');
-}
-
-export function sendRawTx(signedTx: string): SendRawTxRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_sendRawTransaction',
-    params: [signedTx]
-  };
-}
-
-export function estimateGas<T: *>(transaction: T): EstimateGasRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_estimateGas',
-    params: [transaction]
-  };
-}
-
-export function getBalance(address: string): GetBalanceRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_getBalance',
-    params: [hexEncodeData(address), 'pending']
-  };
-}
-
-export function ethCall<T: *>(transaction: T): CallRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_call',
-    params: [transaction, 'pending']
-  };
-}
-
-export function getTransactionCount(
-  address: string
-): GetTransactionCountRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_getTransactionCount',
-    params: [address, 'pending']
-  };
-}
-
-export function getTokenBalance(
-  address: string,
-  token: Token
-): GetTokenBalanceRequest {
-  return {
-    id: id(),
-    jsonrpc: '2.0',
-    method: 'eth_call',
-    params: [
-      {
-        to: token.address,
-        data: ERC20.balanceOf(address)
-      },
-      'pending'
-    ]
-  };
-}
+import type { RPCRequest, JsonRpcResponse } from './types';
 
 export default class RPCClient {
   endpoint: string;
@@ -90,13 +8,25 @@ export default class RPCClient {
     this.endpoint = endpoint;
   }
 
+  id(): string {
+    return randomBytes(16).toString('hex');
+  }
+
+  decorateRequest(req: RPCRequest) {
+    return {
+      ...req,
+      id: this.id(),
+      jsonrpc: '2.0'
+    };
+  }
+
   async call(request: RPCRequest): Promise<JsonRpcResponse> {
     return fetch(this.endpoint, {
       method: 'POST',
       headers: {
         'Content-Type': 'application/json'
       },
-      body: JSON.stringify(request)
+      body: JSON.stringify(this.decorateRequest(request))
     }).then(r => r.json());
   }
 
@@ -106,7 +36,7 @@ export default class RPCClient {
       headers: {
         'Content-Type': 'application/json'
       },
-      body: JSON.stringify(requests)
+      body: JSON.stringify(requests.map(this.decorateRequest))
     }).then(r => r.json());
   }
 }
diff --git a/common/libs/nodes/rpc/index.js b/common/libs/nodes/rpc/index.js
index 7c5486ea..3090556c 100644
--- a/common/libs/nodes/rpc/index.js
+++ b/common/libs/nodes/rpc/index.js
@@ -2,55 +2,58 @@
 import Big from 'bignumber.js';
 import type { INode } from '../INode';
 import type { TransactionWithoutGas } from 'libs/messages';
-import RPCClient, {
-  getBalance,
-  estimateGas,
-  getTransactionCount,
-  getTokenBalance,
-  sendRawTx
-} from './client';
-import type { Token } from 'config/data';
+import RPCClient from './client';
+import RPCRequests from './requests';
 import { Wei } from 'libs/units';
+import type { Token } from 'config/data';
 
 export default class RpcNode implements INode {
   client: RPCClient;
+  requests: RPCRequests;
   constructor(endpoint: string) {
     this.client = new RPCClient(endpoint);
+    this.requests = new RPCRequests();
   }
 
   getBalance(address: string): Promise<Wei> {
-    return this.client.call(getBalance(address)).then(response => {
-      if (response.error) {
-        throw new Error(response.error.message);
-      }
-      return new Wei(String(response.result));
-    });
+    return this.client
+      .call(this.requests.getBalance(address))
+      .then(response => {
+        if (response.error) {
+          throw new Error(response.error.message);
+        }
+        return new Wei(String(response.result));
+      });
   }
 
   estimateGas(transaction: TransactionWithoutGas): Promise<Big> {
-    return this.client.call(estimateGas(transaction)).then(response => {
-      if (response.error) {
-        throw new Error(response.error.message);
-      }
-      return new Big(String(response.result));
-    });
+    return this.client
+      .call(this.requests.estimateGas(transaction))
+      .then(response => {
+        if (response.error) {
+          throw new Error(response.error.message);
+        }
+        return new Big(String(response.result));
+      });
   }
 
   getTokenBalance(address: string, token: Token): Promise<Big> {
-    return this.client.call(getTokenBalance(address, token)).then(response => {
-      if (response.error) {
-        // TODO - Error handling
-        return new Big(0);
-      }
-      return new Big(String(response.result)).div(
-        new Big(10).pow(token.decimal)
-      );
-    });
+    return this.client
+      .call(this.requests.getTokenBalance(address, token))
+      .then(response => {
+        if (response.error) {
+          // TODO - Error handling
+          return new Big(0);
+        }
+        return new Big(String(response.result)).div(
+          new Big(10).pow(token.decimal)
+        );
+      });
   }
 
   getTokenBalances(address: string, tokens: Token[]): Promise<Big[]> {
     return this.client
-      .batch(tokens.map(t => getTokenBalance(address, t)))
+      .batch(tokens.map(t => this.requests.getTokenBalance(address, t)))
       .then(response => {
         return response.map((item, idx) => {
           // FIXME wrap in maybe-like
@@ -66,23 +69,27 @@ export default class RpcNode implements INode {
   }
 
   getTransactionCount(address: string): Promise<string> {
-    return this.client.call(getTransactionCount(address)).then(response => {
-      if (response.error) {
-        throw new Error(response.error.message);
-      }
-      return response.result;
-    });
+    return this.client
+      .call(this.requests.getTransactionCount(address))
+      .then(response => {
+        if (response.error) {
+          throw new Error(response.error.message);
+        }
+        return response.result;
+      });
   }
 
   sendRawTx(signedTx: string): Promise<string> {
-    return this.client.call(sendRawTx(signedTx)).then(response => {
-      if (response.error) {
-        throw new Error(response.error.message);
-      }
-      if (response.errorMessage) {
-        throw new Error(response.errorMessage);
-      }
-      return response.result;
-    });
+    return this.client
+      .call(this.requests.sendRawTx(signedTx))
+      .then(response => {
+        if (response.error) {
+          throw new Error(response.error.message);
+        }
+        if (response.errorMessage) {
+          throw new Error(response.errorMessage);
+        }
+        return response.result;
+      });
   }
 }
diff --git a/common/libs/nodes/rpc/requests.js b/common/libs/nodes/rpc/requests.js
new file mode 100644
index 00000000..b509dd8d
--- /dev/null
+++ b/common/libs/nodes/rpc/requests.js
@@ -0,0 +1,62 @@
+// @flow
+import ERC20 from 'libs/erc20';
+import { hexEncodeData } from './utils';
+import type {
+  CallRequest,
+  GetBalanceRequest,
+  GetTokenBalanceRequest,
+  EstimateGasRequest,
+  GetTransactionCountRequest,
+  SendRawTxRequest
+} from './types';
+import type { Token } from 'config/data';
+
+export default class RPCRequests {
+  sendRawTx(signedTx: string): SendRawTxRequest {
+    return {
+      method: 'eth_sendRawTransaction',
+      params: [signedTx]
+    };
+  }
+
+  estimateGas<T: *>(transaction: T): EstimateGasRequest {
+    return {
+      method: 'eth_estimateGas',
+      params: [transaction]
+    };
+  }
+
+  getBalance(address: string): GetBalanceRequest {
+    return {
+      method: 'eth_getBalance',
+      params: [hexEncodeData(address), 'pending']
+    };
+  }
+
+  ethCall<T: *>(transaction: T): CallRequest {
+    return {
+      method: 'eth_call',
+      params: [transaction, 'pending']
+    };
+  }
+
+  getTransactionCount(address: string): GetTransactionCountRequest {
+    return {
+      method: 'eth_getTransactionCount',
+      params: [address, 'pending']
+    };
+  }
+
+  getTokenBalance(address: string, token: Token): GetTokenBalanceRequest {
+    return {
+      method: 'eth_call',
+      params: [
+        {
+          to: token.address,
+          data: ERC20.balanceOf(address)
+        },
+        'pending'
+      ]
+    };
+  }
+}
diff --git a/common/libs/nodes/rpc/types.js b/common/libs/nodes/rpc/types.js
index c3c3204c..77afe1f3 100644
--- a/common/libs/nodes/rpc/types.js
+++ b/common/libs/nodes/rpc/types.js
@@ -25,8 +25,6 @@ export type JSONRPC2 = '2.0';
 export type JsonRpcResponse = JsonRpcSuccess | JsonRpcError;
 
 type RPCRequestBase = {
-  id: string,
-  jsonrpc: JSONRPC2,
   method: string
 };
 
diff --git a/common/sagas/config.js b/common/sagas/config.js
index 2fd51fa9..6a42cd65 100644
--- a/common/sagas/config.js
+++ b/common/sagas/config.js
@@ -4,10 +4,11 @@ import type { Yield, Return, Next } from 'sagas/types';
 
 // @HACK For now we reload the app when doing a language swap to force non-connected
 // data to reload. Also the use of timeout to avoid using additional actions for now.
-function* handleLanguageChange(): Generator<Yield, Return, Next> {
+function* reload(): Generator<Yield, Return, Next> {
   yield setTimeout(() => location.reload(), 250);
 }
 
 export default function* handleConfigChanges(): Generator<Yield, Return, Next> {
-  yield takeEvery('CONFIG_LANGUAGE_CHANGE', handleLanguageChange);
+  yield takeEvery('CONFIG_NODE_CHANGE', reload);
+  yield takeEvery('CONFIG_LANGUAGE_CHANGE', reload);
 }
diff --git a/common/sagas/wallet.js b/common/sagas/wallet.js
index c68ecd3f..953ed84d 100644
--- a/common/sagas/wallet.js
+++ b/common/sagas/wallet.js
@@ -26,7 +26,7 @@ import {
 import { INode } from 'libs/nodes/INode';
 import { determineKeystoreType } from 'libs/keystore';
 import type { Wei } from 'libs/units';
-import { getNodeLib } from 'selectors/config';
+import { getNodeLib, getNetworkConfig } from 'selectors/config';
 import { getWalletInst, getTokens } from 'selectors/wallet';
 
 import TransactionSucceeded from 'components/ExtendedNotifications/TransactionSucceeded';
@@ -168,9 +168,17 @@ function* broadcastTx(
   const signedTx = action.payload.signedTx;
   try {
     const node: INode = yield select(getNodeLib);
+    const network = yield select(getNetworkConfig);
     const txHash = yield apply(node, node.sendRawTx, [signedTx]);
     yield put(
-      showNotification('success', <TransactionSucceeded txHash={txHash} />, 0)
+      showNotification(
+        'success',
+        <TransactionSucceeded
+          txHash={txHash}
+          blockExplorer={network.blockExplorer}
+        />,
+        0
+      )
     );
     yield put({
       type: 'WALLET_BROADCAST_TX_SUCCEEDED',
diff --git a/common/store.js b/common/store.js
index dd622573..c7685263 100644
--- a/common/store.js
+++ b/common/store.js
@@ -60,6 +60,7 @@ const configureStore = () => {
     throttle(() => {
       saveState({
         config: {
+          nodeSelection: store.getState().config.nodeSelection,
           languageSelection: store.getState().config.languageSelection
         },
         swap: store.getState().swap,
diff --git a/package-lock.json b/package-lock.json
index 0851f89e..25887002 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1641,6 +1641,18 @@
       "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.2.1.tgz",
       "integrity": "sha1-FK1hE4EtLTfXLme0ystLtyZQXxE="
     },
+    "bip39": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/bip39/-/bip39-2.4.0.tgz",
+      "integrity": "sha512-1++HywqIyPtWDo7gm4v0ylYbwkLvHkuwVSKbBlZBbTCP/mnkyrlARBny906VLAwxJbC5xw9EvuJasHFIZaIFMQ==",
+      "requires": {
+        "create-hash": "1.1.3",
+        "pbkdf2": "3.0.12",
+        "randombytes": "2.0.5",
+        "safe-buffer": "5.1.1",
+        "unorm": "1.4.1"
+      }
+    },
     "bip66": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/bip66/-/bip66-1.1.5.tgz",
@@ -10139,7 +10151,6 @@
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.0.5.tgz",
       "integrity": "sha512-8T7Zn1AhMsQ/HI1SjcCfT/t4ii3eAqco3yOcSzS4mozsOz69lHLsoMXmF9nZgnFanYscnSlUSgs8uZyKzpE6kg==",
-      "dev": true,
       "requires": {
         "safe-buffer": "5.1.1"
       }
@@ -12232,6 +12243,11 @@
         "through2-filter": "2.0.0"
       }
     },
+    "unorm": {
+      "version": "1.4.1",
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