lambdaclass/ethlambda

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A minimalist and fast Lean Consensus client by LambdaClass, bringing expertise in distributed systems and blockchain infrastructure to deliver a robust and performant implementation.

Stars: 82
Forks: 28
Open beginner issues: 0
Indexed issues: 29
Avg merge: 1d 20h
Merged PRs (30d): 20

Dominant language: Rust
License: MIT
Last GitHub push: Sep 17, 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

29 issues indexed so far

Make it possible to run a single node devnet Open

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

lambdaclass/ethlambda#609 · Opened Sep 7, 2026
Proposer silently skips its slot after every proposer-rotation wrap (slot ≡ 1 mod 512); no failure counted Open

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

lambdaclass/ethlambda#602 · Opened Sep 1, 2026
refactor(blockchain): return block-building phase timings instead of deltaing histogram sums Open

performance

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

lambdaclass/ethlambda#599 · Opened Aug 31, 2026
Pipeline recursive aggregation with other validator duties Open

performance

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

lambdaclass/ethlambda#583 · Opened Aug 19, 2026
Duty sync gate reports Synced while the node is far behind, so it attests and proposes on a stale head Open

lambdaclass/ethlambda#559 · 2 comments · 1 assignee · Opened Aug 3, 2026
Profile-Guided optimization(PGO) for the ethlambda binary Open

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

lambdaclass/ethlambda#551 · 1 reaction · Opened Jul 31, 2026
Head metrics are initialized to 0 when data exists in DB Open

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

lambdaclass/ethlambda#550 · Opened Jul 30, 2026
Pending blocks in DB are never pruned Open

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

lambdaclass/ethlambda#546 · Opened Jul 30, 2026
Verify blocks before storing them as pending Open

lambdaclass/ethlambda#545 · 6 comments · 1 assignee · Opened Jul 30, 2026
Handle malformed DB data Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

lambdaclass/ethlambda#529 · 4 comments · Opened Jul 20, 2026
Ensure durability during block import Open

lambdaclass/ethlambda#528 · 4 comments · 1 assignee · Opened Jul 20, 2026
Document architectural choices Open

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

lambdaclass/ethlambda#521 · 2 comments · Opened Jul 15, 2026
Add server-side events API endpoint Open

lambdaclass/ethlambda#519 · 1 assignee · Opened Jul 15, 2026
Improve signature and proof selection algorithm Open

performance

lambdaclass/ethlambda#494 · 1 assignee · Opened Jul 2, 2026
Run second aggregation round on safe target computation interval Open

performance

lambdaclass/ethlambda#493 · 1 assignee · Opened Jul 2, 2026
Signature aggregation optimizations Open

performance

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

lambdaclass/ethlambda#491 · Opened Jul 2, 2026
Don't aggregate proposer signature with attestation proofs Open

lambdaclass/ethlambda#471 · 1 assignee · Opened Jun 25, 2026
Block building optimizations Open

lambdaclass/ethlambda#465 · 2 comments · 1 assignee · Opened Jun 24, 2026
Add support for `pq-devnet-6` Open

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

lambdaclass/ethlambda#433 · 2 comments · Opened Jun 12, 2026
Change how hive test driver is enabled Open

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

lambdaclass/ethlambda#359 · 3 comments · Opened May 11, 2026
Run hive in CI Open

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

lambdaclass/ethlambda#358 · Opened May 11, 2026
Move auxiliary types outside `crates/storage/src/store.rs` Open

good first issue

lambdaclass/ethlambda#308 · 4 comments · 1 assignee · Opened Apr 20, 2026
Delay block/attestation processing for a few seconds if it arrives early Open

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

lambdaclass/ethlambda#307 · Opened Apr 20, 2026
Store swallows DB errors with `.expect()`, propagate Result through storage layer Open

good first issue

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

lambdaclass/ethlambda#306 · 5 comments · Opened Apr 18, 2026
Cache fork-choice weights in `LiveChain` Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

lambdaclass/ethlambda#167 · Opened Feb 27, 2026
Add guest program and ZK proving of the STF Open

lambdaclass/ethlambda#156 · 2 comments · 1 assignee · Opened Feb 26, 2026
Add code review agent Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

lambdaclass/ethlambda#133 · Opened Feb 13, 2026
Limit list of pending blocks Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

lambdaclass/ethlambda#126 · Opened Feb 12, 2026
Verify attestations and block signatures before calling handlers Open

performance

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

lambdaclass/ethlambda#78 · Opened Feb 2, 2026

lambdaclass/ethlambda

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