lambdaclass/ethrex

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Minimalist, stable, modular, fast, and ZK native implementation of the Ethereum protocol in Rust. L1 and L2 execution client.

Stars: 897
Forks: 229
Open beginner issues: 3
Indexed issues: 683
Avg merge: 1d 2h
Merged PRs (30d): 51

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 18, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

683 open issues indexed

Optional pure-Rust global allocator, including on the default build Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

lambdaclass/ethrex#7270 · Opened Sep 10, 2026
hegota-testnet docs: three points that don't match the deployed chain / code Open

Difficulty 4/5 3-5 days Newbie friendliness 67/100

lambdaclass/ethrex#7262 · Opened Sep 8, 2026
Snap sync wedges: deep-reorg bails when pivot is above cache edge (edge=18 to_block=19), node stuck at block ~20 Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lambdaclass/ethrex#7251 · Opened Sep 3, 2026
Rust 1.99-beta regression due to `global_asm!` section change Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

lambdaclass/ethrex#7246 · 1 comment · Opened Sep 1, 2026
tracking: land the remaining Glamsterdam optimization work on main Open

L1

Difficulty 5/5 Over a week Newbie friendliness 20/100

lambdaclass/ethrex#7244 · Opened Aug 31, 2026
eth/72 announces the full-blob wrapper size while serving the elided encoding Open

L1

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lambdaclass/ethrex#7238 · Opened Aug 31, 2026
test(l1): bump amsterdam fixtures to tests-glamsterdam-devnet@v8.1.2 (incomplete) Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lambdaclass/ethrex#7228 · Opened Aug 27, 2026
zkEVM tracking issue Open

L1 zkevm

Difficulty 5/5 Over a week Newbie friendliness 20/100

lambdaclass/ethrex#7179 · Opened Aug 20, 2026
Guest OOMs on four tests under ZisK and OpenVM but not SP1 (confirmed by zkEVM team) Open

L1 zkevm

Difficulty 5/5 Over a week Newbie friendliness 35/100

lambdaclass/ethrex#7177 · 3 comments · Opened Aug 20, 2026
ZisK BLS12-381 syscalls panic on the stateless-validator suite (upstream defect) Open

L1 zkevm

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

lambdaclass/ethrex#7176 · 1 comment · Opened Aug 20, 2026
`Trie::get_node` returns empty for nodes it should be able to address Open

L1 snapsync

Difficulty 3/5 1-2 days Newbie friendliness 64/100

lambdaclass/ethrex#7175 · Opened Aug 20, 2026
`ExtensionNode::insert` reads its child at the wrong database key Open

L1 merkleization

Difficulty 3/5 1-2 days Newbie friendliness 74/100

lambdaclass/ethrex#7174 · Opened Aug 20, 2026
Bump the stateless-validator ZisK guest to v1.1.0-alpha once ere cuts a release Open

ci dependencies L1 prover

Difficulty 4/5 3-5 days Newbie friendliness 42/100

lambdaclass/ethrex#7157 · Opened Aug 18, 2026
eth_getTransactionReceipt fails with MalformedBoolean for EIP-8141 frame transactions (type 0x06) Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

lambdaclass/ethrex#7130 · Opened Aug 11, 2026
Manual A/B full-sync benchmark tool (N refs, identical blocks, PR-ready table) Open

L1

Difficulty 5/5 Over a week Newbie friendliness 32/100

lambdaclass/ethrex#7112 · Opened Aug 5, 2026
Continuous full-sync throughput regression watch (rolling-gap mainnet node) Open

L1

Difficulty 5/5 Over a week Newbie friendliness 32/100

lambdaclass/ethrex#7111 · 1 comment · Opened Aug 5, 2026
Ethrex accepts a block whose EIP-7928 BAL omits a system-call storage read Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lambdaclass/ethrex#7109 · Opened Aug 5, 2026
chore(l1): tooling/repl and tooling/runner resolve to the workspace that disowns them Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

lambdaclass/ethrex#7107 · Opened Aug 4, 2026
Full sync: per-block commit path journals state history and repeats per-block storage work (post-#7018) Open

deep-reorg L1 performance syncing

Difficulty 5/5 Over a week Newbie friendliness 25/100

lambdaclass/ethrex#7100 · 1 comment · Opened Aug 4, 2026
Update our fork of the TDX DCAP/PCSS contracts Open

L2 prover

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lambdaclass/ethrex#7097 · Opened Aug 3, 2026
RocksDB: column-family options set on the DB-level `Options` never reach any CF (`max_bytes_for_level_base` 2 GB is a no-op) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lambdaclass/ethrex#7096 · 1 comment · Opened Aug 3, 2026
engine_forkchoiceUpdatedV4 rejects the spec's third parameter (custodyColumns) Open

Glamsterdam L1

lambdaclass/ethrex#7074 · 1 comment · 1 assignee · Opened Jul 30, 2026
dora/go-ethereum fork: FrameSignature.Signer cannot decode an empty signer, so those frame txs vanish from Dora Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

lambdaclass/ethrex#7060 · Opened Jul 29, 2026
Branch layout for the Hegota frame-transaction EIPs Open

hegota

lambdaclass/ethrex#7051 · 1 assignee · Opened Jul 29, 2026
A peer sending an undecodable RLPx message is neither penalized nor discarded, and keeps getting selected Open

L1

Difficulty 4/5 3-5 days Newbie friendliness 65/100

lambdaclass/ethrex#7035 · 1 comment · Opened Jul 27, 2026
l1: post-merge audit findings for the state-history journal foundation (#6686) Open

deep-reorg L1

Difficulty 4/5 3-5 days Newbie friendliness 25/100

lambdaclass/ethrex#7032 · Opened Jul 27, 2026
Historical-state RPC methods silently return latest state for unavailable roots Open

L1

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lambdaclass/ethrex#7028 · 1 comment · Opened Jul 23, 2026
Unify trie-layer commit into a single layer-limited path (retire canonical vs depth gate split) Open

L1

Difficulty 5/5 Over a week Newbie friendliness 42/100

lambdaclass/ethrex#7027 · Opened Jul 23, 2026
L2 checkpoint regeneration can accumulate unbounded trie layers (same pattern as #7018) Open

L2

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

lambdaclass/ethrex#7026 · Opened Jul 23, 2026
Deep reorg can read stale flat-KV values during FKV (re)generation Open

L1

Difficulty 5/5 Over a week Newbie friendliness 35/100

lambdaclass/ethrex#7001 · Opened Jul 16, 2026
Harden engine_newPayload known-block short-circuit for evicted-state re-notification (deep-reorg follow-up) Open

lambdaclass/ethrex#6994 · 1 assignee · Opened Jul 14, 2026
prewarm: delta passes warm nothing for deep-queue senders (follow-up to #6967) Open

performance

lambdaclass/ethrex#6976 · 1 assignee · Opened Jul 8, 2026
Bump the hive rpc-compat pin: support importing pre-merge fixture chains Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lambdaclass/ethrex#6954 · Opened Jul 2, 2026
perf(crypto): keccak256 is single-lane scalar, no SIMD batching Open

performance

lambdaclass/ethrex#6947 · 1 assignee · Opened Jul 2, 2026
Integrate hotpath profiler (feature-gated, zero-cost when disabled) Open

L1 metrics performance

lambdaclass/ethrex#6932 · 1 assignee · Opened Jun 29, 2026
Remove v0 blob sidecar support (follow go-ethereum#35191): produce & store only v1 cell-proof sidecars Open

engine-api L1 tech debt

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lambdaclass/ethrex#6927 · 1 comment · Opened Jun 26, 2026
removedb silently no-ops and reports success when run without the node's --network Open

lambdaclass/ethrex#6925 · 1 comment · 1 assignee · Opened Jun 26, 2026
Release process hardening follow-ups Open

ci tech debt

Difficulty 5/5 Over a week Newbie friendliness 35/100

lambdaclass/ethrex#6922 · Opened Jun 26, 2026
make down-l2 is broken on macOS ($1 vs $$1, and sends SIGINT) Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

lambdaclass/ethrex#6912 · Opened Jun 25, 2026
L2 node monitor TUI deadlocks shutdown on an interactive terminal (Ctrl-C/SIGINT hangs) Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

lambdaclass/ethrex#6911 · Opened Jun 25, 2026
Merge hazard: gate synchronous flat-KV prefetch on !collect_witness when #6877 merges Open

lambdaclass/ethrex#6879 · 1 assignee · Opened Jun 16, 2026
perf(l1): thread-local-pool the blst MSM scratch buffer Open

performance

Difficulty 3/5 1-2 days Newbie friendliness 52/100

lambdaclass/ethrex#6864 · Opened Jun 15, 2026
Sync retry loop has no backoff or consecutive-failure cap for recoverable errors Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

lambdaclass/ethrex#6853 · 1 comment · Opened Jun 12, 2026
Expose mempool size ceilings via CLI and prefer byte-based blob cap Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lambdaclass/ethrex#6849 · 1 comment · Opened Jun 11, 2026
perf(l1): bloated-state SSTORE zero-writes still up to 12.5x behind after merkle parallelization (read/exec path) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lambdaclass/ethrex#6848 · Opened Jun 11, 2026
perf(l1): cold storage-read amplification on sload_bloated / account-access (~40KB per flat read) Open

db L1 performance

lambdaclass/ethrex#6843 · 1 comment · 1 assignee · Opened Jun 11, 2026
logs(l1): block building progress is invisible in ethrex's own logs at default level Open

L1

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lambdaclass/ethrex#6840 · Opened Jun 10, 2026
metrics(l1): export a chain reorg counter — ethrex is one of three ECs with no reorg metric Open

L1 metrics

Difficulty 4/5 3-5 days Newbie friendliness 55/100

lambdaclass/ethrex#6839 · 1 comment · Opened Jun 10, 2026
metrics(l1): no pruning/retention observability — operators can't see when ethrex prunes or reclaims disk Open

db L1 metrics

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lambdaclass/ethrex#6838 · Opened Jun 10, 2026
Block transactions types from other forks or from the L2 Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lambdaclass/ethrex#6837 · Opened Jun 10, 2026

lambdaclass/ethrex

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