![Zebra logotype](https://zfnd.org/wp-content/uploads/2022/03/zebra-logotype.png) --- [![CI Docker](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-integration-docker.yml/badge.svg)](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-integration-docker.yml) [![CI OSes](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-integration-os.yml/badge.svg)](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-integration-os.yml) [![Continuous Delivery](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-delivery.yml/badge.svg)](https://github.com/ZcashFoundation/zebra/actions/workflows/continous-delivery.yml) [![codecov](https://codecov.io/gh/ZcashFoundation/zebra/branch/main/graph/badge.svg)](https://codecov.io/gh/ZcashFoundation/zebra) [![Build docs](https://github.com/ZcashFoundation/zebra/actions/workflows/docs.yml/badge.svg)](https://github.com/ZcashFoundation/zebra/actions/workflows/docs.yml) ![License](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg) ## Contents - [About](#about) - [Getting Started](#getting-started) - [Docker](#docker) - [Building Zebra](#building-zebra) - [Optional Features](#optional-features) - [Network Ports](#network-ports) - [Known Issues](#known-issues) - [Future Work](#future-work) - [Documentation](#documentation) - [User support](#user-support) - [Security](#security) - [License](#license) ## About [Zebra](https://zebra.zfnd.org/) is the Zcash Foundation's independent, consensus-compatible implementation of a Zcash node. Zebra's network stack is interoperable with `zcashd`, and Zebra implements all the features required to reach Zcash network consensus, including the validation of all the consensus rules for the NU5 network upgrade. [Here](https://doc.zebra.zfnd.org/zebrad/index.html#zebra-advantages) are some benefits of Zebra. Zebra validates blocks and transactions, but needs extra software to generate them: - To generate transactions, [run Zebra with `lightwalletd`](https://zebra.zfnd.org/user/lightwalletd.html). - To generate blocks, [enable mining support](https://zebra.zfnd.org/user/mining.html), and use a mining pool or miner with Zebra's mining JSON-RPCs. Mining support is currently incomplete, experimental, and off by default. Please [join us on Discord](https://discord.gg/na6QZNd) if you'd like to find out more or get involved! ## Getting Started You can run Zebra using our Docker image or you can build it manually. Please see the [System Requirements](https://zebra.zfnd.org/user/requirements.html) section in the Zebra book for system requirements. ### Docker This command will run our latest release, and sync it to the tip: ```sh docker run zfnd/zebra:1.0.0-rc.9 ``` For more information, read our [Docker documentation](book/src/user/docker.md). ### Building Zebra Building Zebra requires [Rust](https://www.rust-lang.org/tools/install), [libclang](https://clang.llvm.org/doxygen/group__CINDEX.html), [pkg-config](http://pkgconf.org/), and a C++ compiler. Zebra is tested with the latest `stable` Rust version. Earlier versions are not supported or tested. Any Zebra release can start depending on new features in the latest stable Rust. Every few weeks, we release a [new Zebra version](https://github.com/ZcashFoundation/zebra/releases). Below are quick summaries for installing the dependencies on your machine.

General instructions for installing dependencies

 1. Install [`cargo` and `rustc`](https://www.rust-lang.org/tools/install). 2. Install Zebra's build dependencies: - **libclang** is a library that might have different names depending on your package manager. Typical names are `libclang`, `libclang-dev`, `llvm`, or `llvm-dev`. - **clang** or another C++ compiler: `g++` (all platforms) or `Xcode` (macOS). - **pkg-config**

Dependencies on Arch

 ```sh sudo pacman -S rust clang pkgconf ``` Note that the package `clang` includes `libclang` as well as the C++ compiler.
Once the dependencies are in place, you can build Zebra ```sh cargo install --locked --git https://github.com/ZcashFoundation/zebra --tag v1.0.0-rc.9 zebrad ``` You can start Zebra by ```sh zebrad start ``` See the [Running Zebra](https://zebra.zfnd.org/user/run.html) section in the book for more details. #### Optional Features You can also build Zebra with additional [Cargo features](https://doc.rust-lang.org/cargo/reference/features.html#command-line-feature-options): - `sentry` for [Sentry monitoring](https://zebra.zfnd.org/user/requirements.html#sentry-production-monitoring) - `journald` for [`journald` logging](https://zebra.zfnd.org/user/tracing.html#journald-logging) - `prometheus` for [Prometheus metrics](https://doc.zebra.zfnd.org/zebrad/#metrics) - `getblocktemplate-rpcs` for [mining support](https://zebra.zfnd.org/user/mining.html) You can combine multiple features by listing them as parameters of the `--features` flag: ```sh cargo install --features=" ..." ... ``` Our full list of experimental and developer features is in [the API documentation](https://doc.zebra.zfnd.org/zebrad/index.html#zebra-feature-flags). Some debugging and monitoring features are disabled in release builds to increase performance. ### Network Ports Zebra uses the following inbound and outbound TCP ports: - 8233 on Mainnet - 18233 on Testnet Please see the [Network Requirements](https://zebra.zfnd.org/user/requirements.html#network-requirements-and-ports) section of the Zebra book for more details. ## Known Issues There are a few bugs in Zebra that we're still working on fixing: - Zebra currently gossips and connects to [private IP addresses](https://en.wikipedia.org/wiki/IP_address#Private_addresses), we want to [disable private IPs but provide a config (#3117)](https://github.com/ZcashFoundation/zebra/issues/3117) in an upcoming release - If Zebra fails downloading the Zcash parameters, use [the Zcash parameters download script](https://github.com/zcash/zcash/blob/master/zcutil/fetch-params.sh) instead. - Block download and verification sometimes times out during Zebra's initial sync [#5709](https://github.com/ZcashFoundation/zebra/issues/5709). The full sync still finishes reasonably quickly. - Rust 1.70 [causes crashes during shutdown on macOS x86_64 (#6812)](https://github.com/ZcashFoundation/zebra/issues/6812). The state cache should stay valid despite the crash. - No Windows support [#3801](https://github.com/ZcashFoundation/zebra/issues/3801). We used to test with Windows Server 2019, but not any more; see the issue for details. - Experimental Tor support is disabled until [Zebra upgrades to the latest `arti-client`](https://github.com/ZcashFoundation/zebra/issues/5492). This happened due to a Rust dependency conflict, which could only be resolved by `arti` upgrading to a version of `x25519-dalek` with the dependency fix. ## Future Work The Zebra team is currently working towards an audited stable release. We will continue to add new features as part of future network upgrades, and in response to community feedback. ## Documentation The [Zebra website](https://zebra.zfnd.org/) contains user documentation, such as how to run or configure Zebra, set up metrics integrations, etc., as well as developer documentation, such as design documents. We also render [API documentation](https://doc.zebra.zfnd.org) for the external API of our crates, as well as [internal documentation](https://doc-internal.zebra.zfnd.org) for private APIs. ## User support For bug reports please [open a bug report ticket in the Zebra repository](https://github.com/ZcashFoundation/zebra/issues/new?assignees=&labels=C-bug%2C+S-needs-triage&projects=&template=bug_report.yml&title=%5BUser+reported+bug%5D%3A+). Alternatively by chat, [Join the Zcash Foundation Discord Server](https://discord.com/invite/aRgNRVwsM8) and find the #zebra-support channel. ## Security Zebra has a [responsible disclosure policy](https://github.com/ZcashFoundation/zebra/blob/main/SECURITY.md), which we encourage security researchers to follow. ## License Zebra is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT).