@ethereumjs/common v3.0.1

Support for Geth genesis.json Genesis Format

For lots of custom chains (for e.g. devnets and testnets), you might come across a Geth genesis.json config which has both config specification for the chain as well as the genesis state specification.

Common now has a new constructor Common.fromGethGenesis() - see PRs #2300 and #2319 - which can be used in following manner to instantiate for example a VM run or a tx with a genesis.json based Common:

import { Common } from '@ethereumjs/common'
// Load geth genesis json file into lets say `genesisJson` and optional `chain` and `genesisHash`
const common = Common.fromGethGenesis(genesisJson, { chain: 'customChain', genesisHash })
// If you don't have `genesisHash` while initiating common, you can later configure common (for e.g.
// calculating it afterwards by using the `@ethereumjs/blockchain` package)
common.setForkHashes(genesisHash)

Other Changes and Fixes

• Fixed Common.getHardforkByBlockNumber() for certain post-Merge TTD/block number combinations, PR #2313
• Added Merge HF block numbers for mainnet, goerli and sepolia, PR #2324
• Fixed forkhash calculation to ignore the Merge hardfork even if it might have block number assigned, PR #2324
• Fixed HF-change based property selections (like consensus type) for TTD/block number based non-deterministic HF order, PR #2331
• Updated status of EIP-3675 to Final, PR #2351