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Canonical type definitions for EIP-155 chains
Last release 2 days ago
16 Sep 2026
Ships fairly regularly
a new release about every 3 weeks
Most releases are documented
notes for 53 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
3 years old
110 releases · first in 2023
### Miscellaneous Tasks - Release 0.1.49 ### Other - Add vana (#121) - Move deny to ci
### Dependencies - Bump msrv 1.81 (#114) ### Miscellaneous Tasks - Release 0.1.48 - Allow unicode (#117) - Update spec (#116) - Update deny (#115) - R
One column per month.
### Features - Add sonic testnet (#110) ### Miscellaneous Tasks - Release 0.1.47 ### Other - Update World Chain urls
### Miscellaneous Tasks - Release 0.1.46 ### Other - Update named.rs
Update explorer API endpoint for Celo / CeloAlfajores to use Etherscan
Celo / CeloAlfajores to use Etherscan (#109)### Features - Add ink support (#107) ### Miscellaneous Tasks - Release 0.1.44
Add ApeChain and Curtis Testnet
### Miscellaneous Tasks - Release 0.1.42 ### Other - Add core, merlin, bitlayer
### Features - [NamedChain] Is_arbitrum (#103) ### Miscellaneous Tasks - Release 0.1.41 - Add Unichain Sepolia Testnet
### Features - Add iotex (#102) - Add world (#101) ### Miscellaneous Tasks - Release 0.1.40
### Features - Add Linea Sepolia (#100) ### Miscellaneous Tasks - Release 0.1.39
Revert "chore: remove unnecessary attributes"
Bump MSRV to match alloy-primitives
### Features - Add soneium minato testnet (#95) ### Miscellaneous Tasks - Release 0.1.36
Update Chain ID for Kakarot Sepolia
### Bug Fixes - Update explorer (#93) ### Miscellaneous Tasks - Release 0.1.34
### Bug Fixes - Update zksync testnet chainID (#92) ### Miscellaneous Tasks - Release 0.1.33 - Correct bnb smart chain name (#87) - Touch up formattin
Move is_* helpers to NamedChain
Immutable zkEVM and Immutable zkEVM testnet
Add gravity alpha mainnet and sepolia testnet
### Features - Add xai and xai-sepolia (#85) - Add pulsechain (#84) ### Miscellaneous Tasks - Release 0.1.29
anvil reports not supporting EIP-3855 (Shanghai)
### Bug Fixes - Zksync etherscan api url (#78) ### Features - Add darwinia crab koi (#77) ### Miscellaneous Tasks - Release 0.1.27 ### Styling - Fix f
Add acala karura mandala network
Add avalanche to the list of chains to support shanghai
Mark Scroll as non-legacy chain
### Miscellaneous Tasks - Release 0.1.23 ### Other - Flare network support (#72) - Shimmer network support
### Miscellaneous Tasks - Release 0.1.22 ### Other - Add Autonomys Nova devnet
### Features - Add Taiko mainnet/testnet (#68) ### Miscellaneous Tasks - Release 0.1.21
### Features - Add Ronin mainnet (#67) ### Miscellaneous Tasks - Release 0.1.20
[chain] Add opBNB mainnet and testnet
Correct Arbiturm blocktime hint
[chain] Add method optimism_mainnet
Update Scroll chain currency symbol and shanghai readiness
### Bug Fixes - Correct blast api url (#49) - Spec ### Features - [chain] Add elastos networks (#48) ### Miscellaneous Tasks - Release 0.1.15
### Features - Add blast (#47) ### Miscellaneous Tasks - Release 0.1.14
Dev/modify kakarot sepolia testnet
Add 'Linea' and 'LineaGoerli' serde kebab cases aliases
Remove supportsShanghai for Mode mainnet & testnet
### Features - Add blast sepolia (#31) ### Miscellaneous Tasks - Release 0.1.10 - Update changelog and add cliff
Also add base to supports shanghai
Add public goods network and pgn sepolia to chainsˆ
### Features - Add base sepolia (#24) ### Miscellaneous Tasks - Release 0.1.7
### Features - Add PartialEq impls (#22) ### Miscellaneous Tasks - Release 0.1.6 - Add arbitrum one alias (#20) ### Styling - Unify etherscan url form
### Documentation - Update CHANGELOG.md ### Features - JSON bindings (#19) ### Miscellaneous Tasks - Release 0.1.5 ### Other - New utility method
### Dependencies - Bump version 0.1.4 (#18) ### Documentation - Update CHANGELOG.md ### Features - Shanghai support for polygon (#16) ### Miscellaneou
Add supports_shanghai, deprecate supports_push0
### Bug Fixes - Chain serde (#7) ### Documentation - Update CHANGELOG.md ### Miscellaneous Tasks - Release 0.1.2
Delegate Chain methods to NamedChain
Split Chain into a struct and ChainKind enum
ethers_core::types::Chain (#2)<!-- generated by git-cliff -->
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