Release notes

This release is a mandatory upgrade for all node operators of OP Stack chains

OP Stack

Nethermind was rejecting blocks as invalid due to an InvalidWithdrawalsRoot error from multiple different peers. This is now fixed and it is a mandatory upgrade for OP stack node operators.

• Fix Invalid Withdrawals Root when downloading blocks by @emlautarom1 in #8638

Hoodi gas limit increase to 60Mgas

As everything works smoothly on Sepolia after bumping gas limit to 60m and Hoodi also already operates at 60m we add it as a default value for Hoodi which is used by local builders.

• [Hoodi] Increase gas limit to 60M by @brbrr in #8386

Memory leak fixes

• Fix infinite loop in tx pool by @asdacap in #8632
• Fix filter timeouts, set to 15m by @LukaszRozmej in #8633

Taiko-alethia Pacaya hardfork

• Taiko Alethia Pacaya fork activation which happened at Block 1,166,000 at May 21, 2025 UTC by @smartprogrammer93 in #8642

Surge Hoodi

• Add Surge Hoodi chainspec by @smartprogrammer93 in #8643

Other changes

• Skipping execution requests processor in genesis by @MarekM25 in #8375
• Set default LegacyTransactionForRpc gas price to zero by @Hyodar in #8630
• Accept local tx even when syncing by @benaadams in #8242

Full Changelog: 1.31.10...1.31.11