aniket-engg / fabric-chaincode-evm

Read-only mirror of https://gerrit.hyperledger.org/r/#/admin/projects/fabric-chaincode-evm

Hyperledger Fabric EVM chaincode

This is the project for the Hyperledger Fabric chaincode, integrating the Burrow EVM. At its essence, this project enables one to use the Hyperledger Fabric permissioned blockchain platform to interact with Ethereum smart contracts written in an EVM compatible language such as Solidity or Vyper.

The integration has two main pieces. The chaincode, which integrates the Hyperledger Burrow EVM package in a Go chaincode shim and maps the various methods between the peer and the EVM itself.

The second piece is a Fabric Proxy that implements a subset of the Ethereum compliant JSON RPC interfaces, so that users could use tools such as Web3.js to interact with smart contracts running in the Fabric EVM. Currently the APIs that have been implemented are eth_getCode, eth_account, eth_call, sendTransaction,eth_getTransactionReceipt. We are working on expanding that subset.

We hang out in the #fabric-evm channel. We are always interested in feedback and help in development and testing! See the Fabric's CONTRIBUTING documentation for information on how to contribute to this repository.

Design Document

Please see the design document in FAB-6590.

Deploying the Fabric EVM Chaincode

This chaincode can be deployed like any other user chaincode to Hyperledger Fabric. The chaincode has no instantiation arguments.

You can run the integration test in which a sample Fabric Network is run and the chaincode is installed with the CCID: evmcc.

make integration-test

The end-2-end test is derivative of the hyperledger/fabric/integration/e2e test. You can compare them to see what is different.

We have an tutorial that runs through the basic setup of the EVM chaincode as well as setting up the Fabric Proxy.

Basically, the interaction is the same as with any other chaincode, except that the first argument of a chaincode invoke is the address for the contract and the second argument is the input you typically provide for an Ethereum transaction.

This work is licensed under a Creative Commons Attribution 4.0 International License