All Core Devs - Consensus (ACDC) #164, September 4, 2025

ACDC #164 Summary

fusaka-devnet-3

  • Multiple client issues identified across devnet
  • Barnabas compiled comprehensive feedback document from all client teams
  • Recent fixes reported:
    • Lighthouse bug(s) fixed on unstable branch
    • Prysm ready to use trunk
    • Teku still working on RPC issues
  • Next steps for fusaka-devnet-3
    • Target Monday for all code on trunk branches
    • Target near 100% participation recovery once fixes are deployed
    • Run another non-finality test for 1-2 days to confirm fixes

fusaka-devnet-5 planning

  • Will launch with larger scale like devnet-4
  • Launch contingent on successful devnet-3
  • Broader Fusaka timeline depends on completing current bug fixes and successful devnet-5 testing

Protocol Upgrade Process Timeline Changes

  • Tim proposed modifications to original process document
  • Key proposed changes:
    • Minimum 14 days (down from 30) between client releases and first testnet
    • Minimum 10 days between each testnet (ideally closer to 2 weeks)
    • Maintain 30-day buffer between client releases and mainnet
  • Community feedback collected from L2s, LSTs, infrastructure providers who were mostly in favor; check issue for more color
  • Outstanding concerns:
    • Mixed-use nature of testnets (testing vs staging environments)
    • Need clearer public feedback from community stakeholders
    • Teams need more time to review proposal
  • Participants had not had time to review in-depth yet, so taking conversation async to issue and will revisit next ACDE

Fusaka Timeline Considerations to note

  • Holesky being deprecated allows compressed timeline there
  • Sepolia considered primary “real” testnet with full 30-day buffer
  • EF PandaOps indicates more extensive shadow fork testing
  • Current Fusaka mainnet timeline premature until devnet-3/5 milestones completed

Open discussion

  • ModExp gas cost increase breaking a contract from AlignedLayer
    • Discussion ongoing in Telegram channel
  • Mario highlighted teams should check Hive test results to ensure they all pass
  • Reminder: Glamsterdam EIP discussions deferred until Fusaka mainnet release
2 Likes