mantlenetworkio/mantle-v2 v1.5.4 on GitHub

This release activates the Arsia upgrade on Mantle Mainnet and includes audit-driven fixes.

Arsia is scheduled to activate on Mantle Mainnet at L2 block timestamp 1776841200 (Wednesday, April 22, 2026, 07:00:00 UTC).

Warning

All Mantle Mainnet node operators must upgrade to this release before the activation time.

What's Changed

op-node: Fixed CheckL2GenesisBlockHash to gracefully handle NotFound errors.
op-node: Updated derivation pipeline data source and L1 retrieval logic; added blob format switch tests.
op-batcher: Configuration and driver improvements.
op-service: Fixes to crypto signature handling, HSM signer, backup sync client, and transaction manager.
op-chain-ops: Genesis and mantle config fixes.
deps: Bumped op-geth to v1.5.4, gnark-crypto to v0.18.1, and Go toolchain to 1.24.13.
contracts: Removed dead code from GasPriceOracle and L1Block; fixed OperatorFeeVault.
infra: Dockerfile version bumps across op-batcher, op-node, op-proposer, and gas oracle.
tests: Added EIP-1559 params tests, blob format switch tests, L1 retrieval tests, and NotFound tolerance tests.
audit: Uploaded CertiK audit report for Mantle Arsia.

Full Changelog: v1.5.3...v1.5.4