v1.31.11

Release notes

Important

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

v1.31.10

Release notes

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

Isthmus upgrade

• The Isthmus hard fork of a limited number of OP Stack Mainnet chains is scheduled for May 9, 2025 at 16:00:01 UTC

Sepolia and Holesky gas limit increase to 60Mgas

As we are already post-Pectra on mainnet and after discussion with other Core developers we decided to increase gas limit on Sepolia and Holesky to 60MGas. This also aligns with decisions taken on ACDE 203.

Other changes

• [Optimism] Add support for all Superchain Chains by @emlautarom1 in #8105
• [Taiko] Rename taiko-mainnet configuration to taiko-alethia by @rubo in #8188
• [Holesky & Sepolia] Increase Holesky & Sepolia gaslimit by 66% to 60M by @benaadams in #8263

Full Changelog: 1.31.9...1.31.10

v1.31.9

Release notes

This release is a mandatory upgrade for all node operators of the Ethereum Mainnet.

Pectra upgrade

• The hard fork of the Ethereum Mainnet is scheduled on May 7, 2025 at 10:05:11 AM UTC (slot 11649024, epoch 364032)
• The hard fork of the Gnosis Chain is scheduled on April 30, 2025 at 14:03:40 UTC (slot 21405696, epoch 1337856)

Other changes

• [Shutter] Reduce getPayload timeout on empty block by @Marchhill in #8408
• [Optimism] Safely cast Optimism subtypes by @emlautarom1 in #8516
• [Optimism] Proper Transaction type for eth_* calls when running Optimism by @emlautarom1 in #8157
• [4444] Set ancient barriers for Sepolia post merge by @brbrr in #8469

Full Changelog: 1.31.8...1.31.9

v1.31.8

Release notes

This release is a mandatory upgrade for all node operators running on Gnosis chain.

Major highlights

Pectra hard fork for Gnosis

The hard fork of Gnosis chain is scheduled on April 30, 2025 at 14:03:40 UTC (slot 21405696, epoch 1337856)

Other changes

• Fix eth_simulateV1 for op/base nodes by @rjnrohit and @emlautarom1 in #8153 and #8423
• Fix race condition when loading plugins by @ak88 in #8145
• Fix invalid handling of exceptions in block processing which could result with false Invalid Block error by @LukaszRozmej in #8498

Full Changelog: 1.31.6...1.31.8

v1.31.7

Replaced with v1.31.8.

v1.31.6

Release notes

This release is recommended for all users operating on Sepolia, Holesky, or Chiado.

Major highlights

Hoodi testnet

Added support for a new testnet—Hoodi with the hoodi and hoodi_archive configurations. For instance:

nethermind -c hoodi --data-dir path/to/data/dir
# or
nethermind -c hoodi_archive --sync-snapsync false --sync-fastsync false --data-dir path/to/data/dir

Holesky gas limit increase to 60M

As Holesky is now updated to Pectra and we have Hoodi as a new chain that will imitate the Mainnet closer, we are free to experiment a bit more here, so we decided to try out the 60M gas limit for blocks to see how well those would be handled here.

trace_transaction memory leak fix

Fixed issue #8020, where memory started to grow exponentially under heavy load by the trace_transaction JSON-RPC method, and a node restart was required to bring it back to normal.

What's Changed

• Increase Holesky gas to 60M by @benaadams in #8383
• Fix/1.31.6 trace leak by @kamilchodola in #8388

Full Changelog: 1.31.5...1.31.6

v1.31.5

Release notes

This release is mandatory for all users operating on OP Stack chains. It includes a fix for an issue discovered during Base archive sync. Additionally, this version is recommended for node operators who use older CPUs on Sepolia, Holesky, or Chiado.

Major highlights

Fix for the Base Mainnet

Addressed the issue #8361 when sync was failing on processing blocks with invalid SecP256r1 precompile parameters.

Fix for the BLS precompile issue on older hardware

Fixed the issue with BLS precompile, which caused a crash on some CPUs that don't support modern ISA extensions like Intel ADX. The current version restores support for older hardware by disabling certain CPU-specific optimizations.

Full Changelog: 1.31.4...1.31.5

v1.31.4

Release notes

This release is a mandatory update for Chiado and Sepolia validators. It contains a fix for EIP-6110 addressing differences between Sepolia and Mainnet deposit contracts.

• Sepolia coordinated upgrade: Scheduled on Wednesday, March 5, 2025 2:00 PM UTC.
• Pectra hard fork for Chiado: Scheduled on Thursday, March 6, 2025, 09:43:40 AM UTC (slot 15171584)

Full Changelog: 1.31.3...1.31.4

v1.31.3

Release notes

This release is a mandatory update for Chiado validators prior to the hard fork. It can be skipped for validators operating on other networks.

Major highlights

• Pectra hard fork for Chiado: Scheduled on Thursday, March 6, 2025, 09:43:40 AM UTC (slot 15171584)
• Minor Shutter improvements

Full Changelog: 1.31.2...1.31.3

v1.31.2

Release notes

Major highlights

Pectra hard fork for Sepolia

• The hard fork of Sepolia is scheduled on Wednesday, March 5, 2025 7:29:36 AM UTC (epoch 222464)

Pectra hard fork for Chiado

• The hard fork of Chiado is scheduled on Thursday, March 6, 2025, 09:43:40 AM UTC (slot 15171584)

Full Changelog: 1.31.1...1.31.2