CORE TECHNOLOGY
This week, the ledger team added the LEIOSCERT validation rule and checks for Leios certificates in block bodies. The team also defined how endorser block references are encoded, prevented duplicate cryptographic signing keys from being used, and added certificate tests.
For Dijkstra, the team implemented minimum-fee calculations, updated r...
CORE TECHNOLOGY
This week’s update from the ledger team covers four weeks of work. The headline item: Dijkstra's batch validation now runs Plutus scripts for sub-transactions and counts their execution budgets, closing a gap where sub-transaction validators and minting policies went unchecked and their costs escaped transaction and block limits and script f...
Ouroboros Peras weekly update - 11 September 2026
Integration workstream
Upstreaming of Peras code continued this week.
Peras PRs 61–66 were merged, containing the bulk of the integration workstream: changes to the extended ledger state and HardFork combinator plumbing.
Peras 67: Add new Peras methods to ChainDB was undrafted, and Peras 68: Rewire Dijkst...
CORE TECHNOLOGY
This week, the consensus team made several improvements to the Leios prototype. They rewrote the download decision logic so nodes bound both the time and memory spent on pending downloads, prioritize the newest endorser blocks, and avoid saturating the same peer with concurrent requests. They also added a transaction cache so nodes don't re-...
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Dear community, this report marks the final development update of 2025.
Wishing everyone warm holiday cheer and a wonderful New Year 🎄✨
Here’s to the year ahead — full of fresh progress, new milestones, and shared success!
ECOSYSTEM UPDATES
The information in this section is based on publicly available sources and is provided for informational purposes ...
ECOSYSTEM UPDATES
The information in this section is based on publicly available sources and is provided for informational purposes only. It does not constitute an endorsement or recommendation of any project, product, or service mentioned.
The Cardano ecosystem shows consistent growth, with key network metrics remaining strong. The total number of native ...
