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PQI2026-07-08_047

PQ Interop #047

2026-07-08 1 decision 145 transcript lines

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Call summary

Targets
  • •Zeam: new image with spec fixes — today or early tomorrow — 00:06:48
Decisions
  • •PQ Interop call skipped next week; resumes in two weeks — 00:23:47
Highlights
  • Cryptography:
    • ·LeanVM binary fields: >500 XMSS aggregations/second achieved with binary fields — 00:14:49
    • ·BN254 circuit-based approach in progress for comparison with binary field approach — 00:15:16
  • Documentation:
    • ·SSZ spec extracted from lean spec into standalone repo; under review with consensus spec team (Justin Traglia); to be transferred to official Ethereum GitHub org — 00:13:36
  • Client Updates:
    • ·Zeam: new image released; spec fixes pending; new image expected today or tomorrow — 00:06:33
    • ·Ream: all 3 Ethlambda optimizations implemented and running against Ethlambda on devnet; stable with low head/finalization lag — 00:07:12
    • ·Lantern: refactoring underway; was tracking stale lean spec commit — now updated; image cache bug fixed (optimizations were not taking effect) — 00:09:17
    • ·Ethlambda: Grafana metrics made public; block-building fix merged; signature aggregation optimization implemented; passing all Hive spec tests — 00:10:46
    • ·Grandine: implementing Ethlambda option 1 & 2 optimizations; lean spec fixes in progress; new image + shadow image coming soon — 00:12:15
  • Organizational:
    • ·No call next week (travel); sync async; next call in two weeks — 00:23:47
  • Testing Progress:
    • ·Finalization instability persists: bursts of 30–45+ min without finality despite optimizations; root causes are hardware limits and delayed aggregates — 00:19:36
    • ·Anchal proposed additive justification workaround (cumulative vote ranges) to reduce finalization lag; trade-off is high memory use during prolonged non-finality — 00:21:24
    • ·Hetzner doubled prices and denied additional server requests; teams exploring alternative hosting for devnets — 00:18:03
Action Items
  • •All lean client teams — All teams: sync async on optimizations; next sync call in two weeks — 00:23:27

Meeting chat8

Key decisions

  • PQ Interop call skipped next week; resumes in two weeks

    No call next week due to travel; sync async; next call in two weeks

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