SputnikVM: A Blockchain Virtual Machine

| Name | Description | Crates.io | Documentation | |--------------------|:---------------------------------------------:|:-------------------------------------------------------------------------------------------------------------------:|:----------------------------------------------------------------------------------------------------:| | sputnikvm | Core library for the Ethereum Virtual Machine | | | | sputnikvm-stateful | Merkle Trie stateful wrapper for SputnikVM | | |

SputnikVM is an implementation of an Ethereum Virtual Machine. It aims to be an efficient, pluggable virtual machine for different Ethereum-based blockchains.

We encourage all Ethereum'esque blockchains to adopt SputnikVM, and to make use of SputnikVM's RFC governance project which governs the parameters of each blockchain's VM. This way we can draw from the experience of the community and learn from other proposed RFCs.

Features

Standalone* - can be launched as an independent process or integrated into other apps Universal* - supports different Ethereum chains, such as ETC, ETH or private ones Stateless* - only an execution environment connected to independent State storage Fast* - main focus is on performance IoT compatible* - designed to support hardware used in embedded devices * FFI, Protobuf and JSON interface * written in Rust, can be used as a binary, cargo crate or shared library

Supported Networks

| Network | Crates.io | Documentation | |------------------|:---------------------------------------------------------------------------------------------------------------------------------------:|:------------------------------------------------------------------------------------------------------------------------:| | Ethereum Classic | | | | Ethereum | | | | Ellaism | | | | Ubiq | | | | Expanse | | | | Musicoin | | |

Precompiled Contracts

The core library has the initial four precompiled contracts embedded. To use the bn128 and modexp precompiled contracts introduced by the Byzantium hard fork, pull the following crates.

| Name | Description | Crates.io | Documentation | |------------------------------|:----------------------------:|:---------------------------------------------------------------------------------------------------------------------------------------:|:------------------------------------------------------------------------------------------------------------------------:| | sputnikvm-precompiled-bn128 | bn128 precompiled contracts | | | | sputnikvm-precompiled-modexp | modexp precompiled contracts | | |

Related projects

* SputnikVM Dev - SputnikVM instance for Smart Contract development, provides testing environment and mock for JSON RPC API * SputnikVM in Browser - experimental version of SputnikVM compiled into WebAssembly, therefore can be launched in a browser on Node.js * SputnikVM for embedded devices - experimental project to run on full functional EVM on embedded devices

Dependencies

Ensure you have at least rustc 1.26.2 (594fb253c 2018-06-01). Rust 1.25.0 and before is not supported.

Documentation

• Latest release documentation
• Unstable documentation

Build from sources

SputnikVM is written Rust. If you are not familiar with Rust please see the getting started guide.

Build

To start working with SputnikVM you'll need to install rustup, then you can do:

$ git clone git@github.com:ETCDEVTeam/sputnikvm.git $ cd sputnikvm $ cargo build --release --all

Testing

We currently use two ways to test SputnikVM and ensure its execution aligns with other Ethereum Virtual Machine implementations:

• jsontests: This uses part of the Ethereum

tests. Those tests currently does not have good coverage for system operation opcodes. Besides, some tests are incorrect so they are disabled.

• regtests: A complete regression tests is done on the

Ethereum Classic mainnet from genesis block to block 4 million. Some of the previously failed tests are also integrated into Rust's test system. See wiki for how to reproduce the regression tests. To learn more about building SputnikVM from source please read wiki page Building and Testing

License

Apache 2.0