2026-09-25

This week we continued working on several fronts:

• After internal reviews, the Network Team has now started the process for getting things merged into main:

• ouroboros-network#5431: updates the protocol definitions and is required for the other work. Notably, it introduces MsgServerIdle and MsgAwaitReply. Ready for review!
• ouroboros-consensus#2321 (blocked by ouroboros-network#5431): implements graceful termination in blocking requests based on MsgServerIdle.
• ouroboros-consensus#2322 (based on ouroboros-consensus#2321): makes idleness explicit based on MsgAwaitReply.
• Future PRs:
  • ouroboros-consensus#XXXX (based on ouroboros-consensus#2322): informing the GSM that cert diffusion has caught up, allowing it to transition states.
  • ouroboros-consensus#YYYY: implementing a “blocked” state when incoming certificates are too new to verify. Waiting for the Peras Resolver Bounds to advance until verification gets unblocked.

• On the Consensus side, we:

  • Addressed the review feedback and merged Peras 69 and Peras 70.
  • Continued working on the logic to select fewer transactions when forging a block that contains a Peras certificate.

• On the Testnet side, we:

  • Finished rebasing the setup onto the latest Peras revision in ouroboros-consensus.
  • Finished implementing initial Prometheus support in cardano-tracer.

• On Historical Certificates side, we:

  • Simplified, documented and fixed current PerasImmutableCertDB implementation.
  • Identified design challenges to make the DB state resilient and consistent, which are under investigation.

• In addition, we:

  • Started moving the Peras base types needed by Ledger to cardano-base.
  • Addressed the review feedback in Ledger implementation of the Peras protocol parameters and fixed a small bug in the Dijkstra PParams.
  • Investigated a possible desync of validation window between the moment when an object is announced and the moment it is downloaded, concluding that this shouldn’t be a real problem.
  • Started updating the Peras CIP-0140 to reflect some of the important developments since the project started.
  • Continued discussing the plan for concrete crypto for mainnet Peras, based on the latest feedback from the researchers.
  • Continued investigating the interaction between ObjectDiffusion and Chainsync, as well as necessary improvements needed in the PerasEpochContextResolver machinery.