FOCIL2026-06-16_036

FOCIL Breakout #036

2026-06-16 2 decisions 518 transcript lines

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•IL bitlists removed from spec; engine API kept as-is; EL deduplication of IELTs deferred to future change — 00:20:23
•IL enforcement turned off during non-finality (circuit breaker); 1-epoch threshold preferred over 2; final value to be confirmed after broader review — 00:47:03

Client Updates:
- ·Lodestar rebased on Glamsterdam devnet-5; bit serialization bug (Gloas version) confirmed fixed — 00:05:23
- ·Censoring builder branch works; Bharath to retest against latest Lodestar branch tomorrow — 00:05:44
- ·Lighthouse rebased on Glamsterdam devnet-5; FOCIL implementation still being tested — 00:07:23
Focil Spec Changes:
- ·IL bitlists decided for removal: can be faked by builders; no enforcement mechanism; engine API unchanged for now — 00:09:43
- ·Payload status V2 proposed: adds 'latest IL-satisfied hash' field to clarify IL compliance across branches — 00:20:37
- ·Accepted payloads (non-canonical branch) treated as IL-compliant by CL; EL must cache IELTs for head (and possibly parent) payload only — 00:22:03
- ·Non-finality circuit breaker: rough consensus to turn off IL enforcement after 1 epoch without finality (down from current 2-epoch threshold); to be confirmed via Discord — 00:47:03

•Jihoon — Open Discord thread on 1-epoch vs 2-epoch non-finality threshold for IL enforcement; gather broader input from client teams — 00:52:40
•Jihoon — Prepare write-up and spec PR covering: payload status V2, accepted-payload IL handling, and non-finality circuit breaker; coordinate test case changes with Felix — 00:57:28

Justin Traglia
Hello everyone
Bharath
Hello hello
Nico Flaig
wen lighthouse?
Eitan Seri-Levi
Do I still need to pass dora_params: image: bbusa/dora:focil In kurtosis
Nico Flaig
Replying to "Do I still need to p..." no that image is outdated
Bharath
Replying to "Do I still need to p..." No I think you can use the latest
Eitan Seri-Levi
Replying to "Do I still need to p..." cool
brechy
Thanks for presenting!

IL bitlists removed from spec; engine API kept as-is; EL deduplication of IELTs deferred to future change
IL bitlists removed from spec to simplify the implementation
IL enforcement turned off during non-finality (circuit breaker); 1-epoch threshold preferred over 2; final value to be confirmed after broader review
IL enforcement turned off during non-finality to improve performance