CORE TECHNOLOGY
This week, the consensus team resolved an issue with the attack in the Leios prototype targeting how nodes announce endorser blocks, which had been causing honest nodes to disconnect from each other (#2179). They also extended db-analyser to read Leios chains, enabling the tool to replay a chain and report the cost of applying each block, in...
CORE TECHNOLOGY
This week, the consensus team released prototype-2026w29 (#996), enabling the node to certify and announce endorser blocks inside the forging loop – expected to raise the certification rate and throughput (#2105). They also improved testnet stability by addressing an issue with Dijkstra block handling (#2140), updated the prototype dashboard...
CORE TECHNOLOGY
Cardano's engineering is now decentralized. Since 2024, IO and its partners have been managing a transition that will conclude in 2027, resulting in several independent firms maintaining at least three Cardano node implementations in Haskell, Rust, and Go, alongside a complete set of formal specifications overseen by member-based organizatio...
CORE TECHNOLOGY
This week, the consensus team continued to stabilize the Leios testnet, releasing two prototype builds – prototype-2026w27a and prototype-2026w28 – and fixing several bugs identified during testnet runs. The team also implemented a voting dashboard to improve Leios observability, showing how endorser blocks are voted on and certified. They a...
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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 ...
