v1.35.2

Release notes

Important

This release replaces v1.35.1 and is mandatory for all node operators.

It includes the Ethereum Mainnet Fusaka hard fork configuration (Osaka, BPO1, and BPO2 upgrades).

All nodes must upgrade to this version before the Fusaka hard fork activation on December 3, 2025 at 9:49:11 PM to stay in sync.

Overview

This release activates the Ethereum Mainnet Fusaka hard fork, which introduces the Osaka, BPO1, and BPO2 upgrades.

What's Changed

• Mainnet Osaka, BPO1, BPO2 forks by @Marchhill in #9615

Full Changelog

https://github.com/NethermindEth/nethermind/compare/1.35.1…1.35.2

v1.35.1

Caution

This release has block production and sync issues. Use v1.35.2 instead.

Release notes

Important

This release is mandatory for all node operators.

It includes the Ethereum Mainnet Fusaka hard fork (Osaka, BPO1, and BPO2 forks) and critical improvements that ensure network stability and compatibility.
All nodes must upgrade to this version before the Fusaka hard fork activation on December 3, 2025 at 9:49:11 PM to stay in sync.

Overview

This release continues the performance and reliability improvements introduced in v1.35.0 while activating the key Ethereum Mainnet Fusaka hard fork and strengthening node stability across networks.

This update focuses on network readiness and state consistency. It also resolves multiple edge cases affecting trie storage, block range updates, and protocol session handling.

Upgrading to this version ensures seamless operation through the Fusaka hard fork and reduces the risk of shutdowns or state inconsistencies during execution.

What's Changed

• Use correct Bmi2 intrinsic support check by @benaadams in #9510
• Update Dockerfiles by @rubo in #9497
• Fix incorrect BlockRangeUpdateMessage.EarliestBlock in some edge cases by @LukaszRozmej in #9505
• Try fixing leak in ProtocolsManager._sessions by @LukaszRozmej in #9410
• Allow longer state check by @asdacap in #9570
• Fix Arb TrieException by @asdacap in #9555
• Improve block-related caching by @benaadams in #9571
• Fix batched trie visitor missed storage by @asdacap in #9496
• Place access list deserialization guards by @LukaszRozmej in #9466
• Better message when eth_getFilterChanges is out of bounds by @LukaszRozmej in #9451
• Harden RLP limits on allocations by @LukaszRozmej in #9465
• Persist genesis state after genesis loader to prevent unclean shutdowns by @asdacap in #9599
• Mainnet Osaka, BPO1, BPO2 forks by @Marchhill in #9615
• Check bytes left before checking the limit by @LukaszRozmej in #9483
• Change RLP limits and add logs by @LukaszRozmej in #9631

---

Full Changelog:
1.35.0...1.35.1

v1.35.0

Release notes

This version introduces important updates and optimizations across multiple components, improving network stability, performance, and test coverage.
It includes several fixes and enhancements to ensure smoother operation for all supported networks, including the Ethereum Mainnet.

Key improvements include:

• Updated default Ethereum mainnet gas limit to 60M
• Hardened code DB and trie persistence mechanisms
• Optimizations for RPC workflows, pruning, and snap sync reliability
• Enhancements to blob proofs, gas estimation, and network configuration updates
• Reproducible Nethermind builds

These changes are strongly recommended for all operators to maintain compatibility and ensure optimal stability with the latest network parameters.

What's Changed

• Refactor CalculateValueHash for header by @ak88 in #9276
• Fix inconsistent test. by @asdacap in #9279
• Fix extra-params when empty by @stdevMac in #9286
• XDC : Interfaces and Dependencies (To Discuss) by @Demuirgos in #9268
• Cleanup/Simplify CodeInfoRepository registration. by @asdacap in #9243
• Fix recovery queue size by @damian-orzechowski in #9288
• Reduce use of IWorldStateManager in test by @asdacap in #9292
• Remove IWorldStateManager.InitializeNetwork by @asdacap in #9298
• Update packages by @rubo in #9302
• Revert "Update packages (#9302)" by @rubo in #9307
• Select proper block by @flcl42 in #9289
• evm changes to integrate stylus execution by @tanishqjasoria in #9301
• Add XDC tests by @rubo in #9304
• Update GitHub Actions by @rubo in #9311
• Fix empty slots error in SnapSync - return error status instead of throwing exception by @Copilot in #9313
• Change method signatures on Epoch manager by @ak88 in #9315
• Re-create empty account by @damian-orzechowski in #9180
• Update packages by @rubo in #9310
• PluginOrder Refactoring by @svlachakis in #9308
• Fix: ArrayPool buffer leak in PatriciaTree Get methods by @gitToki in #9322
• Fix uninstall filter by @MarekM25 in #9325
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9327
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9328
• Make expected to fail hive tests list & fix gas accounting in eth_simulate by @deffrian in #9274
• Fix Taiko Chains Default Config by @dipkakwani in #9309
• Xdc header validator by @ak88 in #9293
• Fix MCL memory leak by @rubo in #9336
• Fix Issues in Taiko Fee Handling by @dipkakwani in #9314
• Fix hanging sepolia snap sync by @asdacap in #9338
• Fix hive check script by @deffrian in #9337
• Feature/cap estimate gas to 7825 by @LukaszRozmej in #9331
• Osaka testnet forks by @Marchhill in #9321
• Fix blockhash related random invalid block by @asdacap in #9340
• Fix selfdestruct missed between transaction by @asdacap in #9343
• Make eth_getBlobsV1 return UnsupportedFork post Osaka by @LukaszRozmej in #9341
• Xdc genesis spec by @cicr99 in #9245
• Implement EIP 2681 validation by @LukaszRozmej in #9352
• Fix state error messages to include both block number and hash by @Copilot in #9278
• Remove Focal from PPA by @rubo in #9358
• Exclude runtimeconfig.template.json by @rubo in #9359
• Don't pollute ValidationResult with additional stuff by @LukaszRozmej in #9354
• Add debug_traceCallMany RPC method with Geth compatibility by @LukaszRozmej in #9333
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9370
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9369
• Fix BloBaseFee for calculation in RPC by @LukaszRozmej in #9376
• Fix beneficiary & blob base fee in eth_simulate by @deffrian in #9371
• Don't rule peer removal by discovery v5 by @flcl42 in #9361
• Bump version to 1.35.0 by @stdevMac in #9377
• Move pruning boundry 192->256 on networks that might need it by @LukaszRozmej in #9347
• Disconnect on BlockRangeUpdateMessage with empty hash by @LukaszRozmej in #9384
• Drop BlockReceiptsTracer._otherTracer on EndBlockTrace by @LukaszRozmej in #9387
• Disable Flashbots module by default by @emlautarom1 in #9380
• Fix ArrayPoolList disposal warning in Block.AccountChanges by @bshastry in #9385
• feat: Make gas available for evm calculation overridable by @hudem1 in #9392
• Use improved ckzg version by @flcl42 in #9393
• Fix estimate gas & add timestamp to logs by @deffrian in #9379
• Harden Orphaned Block validations by @LukaszRozmej in #9389
• Better Isolate trie store during pruning by @asdacap in #9346
• Make txpool test run faster by @asdacap in #9382
• Safer types for a one of case by @flcl42 in #9398
• Fix eth_getProofs bug with inline storage nodes by @JereSalo in #9367
• XDC : Snapshot Manager by @Demuirgos in #9318
• Add transaction params checks in rpc by @deffrian in #9349
• Fix simple transfer test by @benaadams in #9405
• StatelessExecution tool by @deffrian in #9324
• Make ExecutePrecompile overridable instead of RunPrecompile by @hudem1 in #9396
• Fix StatelessBlockProcessingEnv by @benaadams in #9407
• Apply ValueRlpStream optimizations to RlpStream and ValueDecoderContext by @Copilot in #9208
• Refactoring HasState by @MarekM25 in #9414
• Fix/eth69 correct lower bound by @LukaszRozmej in #9409
• Thething by @asdacap in #9416
• Update Dockerfiles by @rubo in #9467
• Set Ethereum mainnet default gaslimit to 60M by @benaadams in #9132
• Disable IIS assets by @rubo in #9464
• Fix concurrent tree read by @asdacap in #9447
• Use proper blob proofs version by @flcl42 in #9423
• Fix bulkset edge case by @asdacap in #9430
• Fix/Era import by @asdacap in #9431
• Make builds reproducible by @rubo in #9365
• chore: update Directory.Build.props by @stdevMac in 90c20ed
• Enable Osaka on Chiado by @Marchhill in #9395
• Remove quick fail when running Hive tests by @deffrian in #9426
• Add timestamp to simulate logs & blob gas & remove total difficulty by @deffrian in #9406
• Refactor RPC comparison workflow for...

v1.34.1

Release notes

Important

This release is mandatory for all node operators.

It addresses the issue with nodes stuck at a certain block in Hoodi network, causing an issue:
Code 0x93c9d3b83e1711754119e36d3a33fa26ed814a0d17f47b67b7acfa8ced63bad5 is missing from the database.
and generally hardens the implementation around code DB data persistence.

If you have encountered the code missing issue, operators will need to update and resync their nodes. This fix should prevent it from happening in the future.

To resync your node, follow the guide at this link.

Changelog

• Reset code filter per block by @benaadams in #9415

Full Changelog: 1.34.0...1.34.1

v1.34.0

Release notes

Important

This release is mandatory for all testnet operators for the upcoming Fusaka hard fork.
It includes protocol changes and fixes required to remain in consensus on testnets.

• Holesky: Wednesday, October 1, 2025 at 8:48:00 AM UTC
• Sepolia: Tuesday, October 14, 2025 at 7:36:00 AM UTC
• Hoodi: Tuesday, October 28, 2025 at 6:53:12 PM UTC

Fusaka Testnets Support

• Implemented Osaka testnet forks (#9321).
• Updated RPC behavior: eth_getBlobsV1 now returns UnsupportedFork post-Osaka (#9341).
• Fixed eth_config: ensured ForkInfo is always initialized (#9233).

Stability and Sync Improvements

• Fixed snap sync edge cases and hanging on Sepolia (#9166, #9338).
• Corrected blockhash handling and rare invalid block cases (#9340).
• Improved cancellation handling and graceful shutdown for peers and sync dispatcher (#9173, #9174, #9175).
• Fixed concurrent storage root issues and reduced reliance on storage root reads (#9209, #9255).
• Ensured consistent receipts handling and transaction processed counters (#9231, #9270).
• Fixed issues in Taiko fee handling and default chains config (#9314, #9309).
• Fixed missed SELFDESTRUCT between transactions (#9343).

Node Improvements

• Reduced log noise from misbehaving peers and improved shutdown logging (#9156, #9177).
• Improved logging and config autocompletion (#9159).
• CLI now displays default values in help output (#9152).
• Improved deposit request validation (#9199).
• Enhanced Prometheus metrics in Kute tool (#9077).
• Better RPC alignment with Geth (#8951).
• Various performance optimizations: bloom filters, Patricia trie, TrieNode navigation, gas estimation (#9191, #9220, #9221, #9195, #9064, #9210).

These changes strengthen node stability, improve operator experience, and ensure readiness for the Fusaka fork on testnets.

What's Changed

• Correctly Wrap PrepareRequest exeception by @benaadams in #9144
• Only update metrics if not already updating metrics by @benaadams in #9142
• fix: BlockReceiptsTracer not forwarding stateRoot to inner tracers by @radik878 in #9129
• Make CLI show default values in help output by @Copilot in #9152
• Don't serialize UI events when no subscribers by @benaadams in #9150
• Fix storage range not retried on wrong order by @asdacap in #9154
• Reduce log noise from bad behaving peers by @benaadams in #9156
• Don't crash process in debug for Disposal warning messages by @benaadams in #9157
• Base mainnet bigger machine by @kamilchodola in #9158
• Improve logs and config autocompletion by @flcl42 in #9159
• Add a EIP and remove genesis number in superchain.py by @flcl42 in #9143
• Add Vector256 nibble conversion by @benaadams in #9153
• Use multi-arch vectors for Or and Xor; and expand to 512 bits by @benaadams in #9164
• Fix snap sync edge case due to unnecessary proof by @asdacap in #9166
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9147
• Use single event subscription for NewPayload by @benaadams in #9107
• Always output logs for processed blocks by @benaadams in #9170
• Handle Cancellation in SyncPeerPool.Allocate by @benaadams in #9173
• Extra validation in case IForwardHeaderProvider skip header. by @asdacap in #9171
• Cancel sync dispatcher loop on cancellation by @benaadams in #9174
• Handle peers shutdown more gracefully by @benaadams in #9175
• Remove unsupported Rlpx channel option by @benaadams in #9172
• More graceful shutdown logs by @benaadams in #9177
• Support OP Isthmus at the Genesis block by @emlautarom1 in #9163
• Explicitly pass parent header in header validator by @asdacap in #9168
• Cleanup/remove MaybeParent. by @asdacap in #9169
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9148
• Align/refactor RPC output with geth by @ak88 in #8951
• Optimize Blooms by @benaadams in #9191
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9193
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9194
• Per contract state by @asdacap in #9088
• Use genesis as the parent for the first block by @flcl42 in #9203
• Improve deposit request fields validation by @flcl42 in #9199
• Refactor/move main blockprocessing to di by @asdacap in #9130
• Start XDC project by @ak88 in #9206
• Optimize TrieNode.SeekChild by @benaadams in #9195
• Fix concurrent storage root issue by @asdacap in #9209
• Incorrect Gas Estimation by @svlachakis in #9064
• GasEstimator refactor post #9064 by @LukaszRozmej in #9210
• Added basic spec classes by @ak88 in #9212
• Await db blocks sync inside ReviewBlockTree by @deffrian in #9196
• Remove hardcoded AuRa release spec decorator to plugin module by @asdacap in #9167
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9217
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9218
• Precompiles Extensibility through IReleaseSpec by @svlachakis in #9222
• feat: improve kute tool prometheus metrics by @cbermudez97 in #9077
• Hive to load blocks before RPC start by @flcl42 in #9224
• Refactor/move blocktree to di by @asdacap in #9230
• Admin Get Peers by @svlachakis in #9003
• Fix receipts deletion by @Marchhill in #9231
• ENR Support on admin_peers by @svlachakis in #9228
• Ensure ForkInfo is initialized by @flcl42 in #9233
• feat(block-validator): add debug logging message for MaxRlpBlockSize by @0xMushow in #9236
• Implement Xdc Header Decoder by @cicr99 in #9214
• Remove unused references for XDC by @ak88 in #9237
• Corrected sealing encoding XDC by @ak88 in #9238
• Removed xdc ref in core by @ak88 in #9242
• XDC : add extra needed types by @Demuirgos in #9219
• implement eth_getAccountInfo by @smartprogrammer93 in #9241
• Added filename in accumulator.txt and checksums.txt by @ndatta-nethermind in #9211
• Cleanup/remove nodecommit info by @asdacap in #9155
• Fix Nethermind UI when the app is run from non-app directory by @wurdum in #9248
• Fix simulate gas by @deffrian in #9244
• Cleanup/remove unnecessary method by @asdacap in #9249
• Tests for #9244 by @deffrian in #9250
• Perf/Patricia set by @asdacap in #9220
• Perf/Update Patricia.Get by @asdacap in #9221
• Auto-update fast sync settings by @core-repository-dispatch-app[bot] in #9252
• Update OP Superchain chains by @core-repository-dispatch-app[bot] in #9253
• Bump up the version to 1.34.0-unstable by @core-repository-dispatch-app[bot] in https://github.com/Nether...

v1.33.1

Release notes

Important

This release replaces v1.33.0 and addresses important issues reported for that version, specifically around eth_config and Receipts handling.

• Receipts fix: Corrects an issue where receipts were removed for blocks beyond TxLookupLimit even when History pruning was disabled. See #9231.
• eth_config fix: Resolves a configuration issue reported by the EF Testing team. See #9233.

These changes improve stability and consistency for users relying on long-term history and accurate transaction receipts.

Note

If you were affected by the missing receipts from running v1.33.0 and require full historical receipts, the two workarounds are:

• Run Nethermind with Sync.FixReceipts set to true for offline patching of missing receipts
• Delete the receipts folder in the Nethermind database directory (by default, nethermind_db/<network>) for a full download of all receipts while online

For further details, please review the full changelog and linked PRs below.

Full Changelog: 1.33.0...1.33.1

v1.33.0

Release notes

This release brings over 340 improvements across 2012 files, ranging from performance enhancements, protocol upgrades, and node-runner improvements.

Nethermind UI (initial release)

This version introduces the first iteration of the Nethermind UI (#9090), providing an integrated interface to interact with and monitor your node. This marks the beginning of a more user-friendly experience for running Nethermind.

The UI is enabled when UI health check is enabled: --healthchecks-enabled

If you wish to expose only the UI and not RPC externally, then you can do this using capabilities on HTTP endpoints with the JsonRpc.AdditionalRpcUrls parameter.

For example, if your consensus client is running locally (running in the same instance) and your external IP is 10.4.0.4, then you can expose only the UI using just the http|health capabilities on the external IP binding and want it enabled at HTTP port 80, then binding the other capabilities needed by the consensus client to localhost:

--jsonrpc-additionalrpcurls "[http://10.4.0.4:80|http|health,http://localhost:8551|http;ws|net;eth;subscribe;engine;web3;client]"

This ensures you don't additionally enable your node as a public RPC endpoint while also enabling the UI.

Historical data live pruning

We’ve added automatic history pruning capabilities (#8040), giving operators the ability to keep disk usage under control by pruning historical chain data as the node runs. This feature is disabled by default but can be enabled via configuration. It is an experimental feature, not yet recommended for use on production nodes.

History pruning can be enabled by passing the flag --history-pruning UseAncientBarriers. This will automatically prune any blocks older than the ancient barriers cutoff.

Alternatively, pruning can be enabled in rolling window mode with the flag --history-pruning Rolling. This will prune any blocks older than 82125 epochs, which is around 1 year on the Ethereum Mainnet. The specific number of epochs can be configured with the flag --history-retentionepochs <value> -- the number of epochs must be a minimum of 82125.

History pruning can be disabled with the flag --history-pruning disabled -- currently this is the default behavior, but this may change in the future.

Peering improvements for OP Stack

Several improvements were made to Optimism and OP Stack, including:

• better handling of finalized/safe blocks #8658
• a dedicated optimism RPC namespace #8667
• refined peer management to improve stability and sync performance #8684, #8960

Performance improvements

A wide range of EVM and networking optimizations were introduced, including:

• Reduced allocations in opcode execution #8687, #8740 and transaction sender recovery #8781, #8824.
• Warmup and precomputation improvements for EVM instructions #8699, #8836.
• Faster logging and RPC handling #8879, #8976.
• RocksDB upgrades and optimizations #8640, #9059.

These changes collectively reduce CPU and memory usage while improving throughput and responsiveness.

Other improvements

Additionally, this release includes important fixes and feature updates:

• EIP implementations:
  • EIP-7823: Gas accounting #8649
  • EIP-7825: Transaction gas limit cap #8663
  • EIP-7883: ModExp changes #8489, #8964
  • EIP-7907: Contract code size metering #8845
  • EIP-7910: eth_config #8956
  • EIP-7918: Blob base fee updates (#8656, #8935
  • EIP-7934: Execution block size limit #8815
  • EIP-7939: CLZ instruction #8759
  • EIP-7951: RIP-7212 renamed & enabled in Osaka #8753
• Consensus layer & OP-CL: Split finalized/safe blocks #8658, new RPC methods for Taiko and OP #8874, and refined health checks #8755.
• Discovery & peering: Faster removal of inactive peers #9037, improved gossip prioritization for peers on the same fork #9043, and fixes for discv4/discv5 edge cases #9046, #9113.
• Testing & tooling: Revamped Hive/Assertoor test integrations #8711, #8862, new worldstate benchmarks #9051, and initial support for HTML and Grafana reporting #9074, #8960.

What's Changed

• Fix infinite loop in tx pool by @asdacap in #8632
• Fix filter timeouts, set to 15m by @LukaszRozmej in #8633
• Update System.CommandLine package by @rubo in #8639
• Remove SkipLocalsInit to avoid garbage in first bytes of hash by @wurdum in #8634
• add surge hoodi chainspec by @smartprogrammer93 in #8643
• Fix for Block.AccountChanges not being disposed in some cases by @alexb5dh in #8647
• taiko alethia pacaya fork activation by @smartprogrammer93 in #8642
• Revert wrong code on missing receipt by @LukaszRozmej in #8653
• Set default LegacyTransactionForRpc gas price to zero by @Hyodar in #8630
• Fix #8648 - eth_getTransactionByBlockNumberAndIndex out of bounds by @LukaszRozmej in #8654
• Update RocksDB package by @rubo in #8640
• Kute: order by filename by @benaadams in #8657
• PatriciaTree ignoreMissingDelete is not used by @MarekM25 in #8646
• Implement Eip7823 by @benaadams in #8649
• Sync OP chains after Isthmus by @emlautarom1 in #8638
• Use RocksDB PinnableSlice when available by @benaadams in #8661
• Optimize RlpStream.Encode(ulong) by @benaadams in #8660
• Slight discovery refactor. by @asdacap in #8664
• Mild performance tweaks by @benaadams in #8674
• Remove TD based peer allocation strategy by @asdacap in #8670
• Improve WebSocketMessageStream by @benaadams in #8676
• Optimism CL: Split finalized/safe blocks by @deffrian in #8658
• Fix ClockCache.Set by @benaadams in #8679
• Implement EIP-7825: Transaction Gas Limit Cap by @Marchhill in #8663
• Implement OP CL optimism RPC namespace by @emlautarom1 in #8667
• Hide OP-CL specific options by @emlautarom1 in #8684
• Reduce Forward header starting block number did not changed. exception to log. by @asdacap in #8683
• Refactor/Reduce AuraNethermindApi usage. by @asdacap in #8686
• Optimize 12 x 20byte & 32byte OpCodes by @benaadams in #8687
• Perform stack writes as single 32 byte vector by @benaadams in #8691
• Reintroduce Jit time branch elimination by @benaadams in #8692
• Fixes one discv5 test by @ak88 in #8635
• Migrate to Microsoft.Testing.Platform by @rubo in #8190
• Fix/aura hive startup by @asdacap in https://github.com/NethermindEth/nethermind/pull/...

v1.32.4

Release notes

Fixed the peer discovery issue

After the Geth v1.16.0 release, there was a sudden drop in discovered Nethermind nodes in network crawlers. This version exposed one edge-case issue, which was much more likely to happen, and is now addressed.

Other improvements

Additionally, a few extra improvements were added to the general discovery phase of finding new peers and ensuring a high peer count can be achieved:

• #9046: Ensures we reuse the original request identifier when replying, fixing mismatches in ENR messages.
• #8712: Fixes corrupt snappy message when disconnecting fast due to too many peers.
• #9037: Speeds up how quickly inactive or problematic peers are dropped.
• #9043: Prefers peers on the same blockchain fork for gossiping to improve message propagation.
• #9040: Fixes an issue that could miss some transaction receipts during syncing.
• #9054: Optimizes peer-distance calculations for faster network operations.

Full Changelog: 1.32.3...1.32.4

v1.32.3

Release notes

Important

This release is a mandatory upgrade for all node operators of the Energy Web Chain.

The Zurich hard-fork of EWC is set to the block number 36871000, which is expected to occur in the UTC afternoon of August 5, 2025.

Major highlights

Addressed OOM issues during full and archive sync

More resilient syncing of Archive nodes with better memory management thanks to #8975

Fixed the issue with broken block processing thread when a block is suggested out of order

This is an edge case scenario, but with some consensus clients and under very rare circumstances, it tends to break the processing in #8683

Improved the general performance of a node and its stability

Improved peering and validation performance under heavy P2P demand (snapserving, mempool txs, etc) in #8968

Few extra changes which are improving overall node performance, like #8926, #8947, #8927

Additionally, whenever a node breaks via random database corruption, now Nethermind will shut down to ensure no further corruption of the database is happening, and with proper setup (via Docker, systemd, or in systems like DappNode), it may self-recover in a few minutes; in #8986

Full Changelog: 1.32.2...1.32.3

v1.31.13

Release notes

Important

This release is a mandatory upgrade for all node operators of the Energy Web Chain.

The Zurich hard-fork of EWC is set to the block number 36871000, which is expected to occur in the UTC afternoon of August 5, 2025.

Full Changelog: 1.31.12...1.31.13