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Weekly development report as of 2023-02-24

Weekly development report as of 2023-02-24


This week, the networking team fixed some issues in the peer-to-peer (P2P) code. They also finished the Eclipse evasion design phase, which is essential for Ouroboros Genesis protocol functionality, and started working on its implementation. 

Finally, the team released an updated set of network packages to be integrated with the cardano-node master branch.

The ledger team integrated multiple changes with the cardano-base and ouroboros-network repositories. This involved changes to the ledger serialization libraries to support proper versioning, and Conway ledger era support, which allows the ledger state to transition to a new system of governance. Additionally, the team continued addressing technical debt, improving the documentation and testing infrastructure, and formally specifying CIP-1694.

The consensus team analyzed the results from the system level benchmarks for UTXO HD, which showed a substantial performance regression. The analysis showed that the frequency at which ledger snapshots were taken was too high, so the team requested another benchmarking check based on a more realistic snapshotting policy. They also continued improving the prototype and released UTXO HD related packages.

Work is ongoing on Genesis development – the team discussed the current design with researchers and continued working on the testing and benchmarking of different Genesis prototypes.

The team also fixed a test failure related to iterators, which resulted in documentation improvements, an updated framework for writing unit and regression tests, and the possibility of debugging QuickCheck counter examples.

Finally, they released ouroboros-consensus v. and ouroboros-consensus-cardano to CHaP.

As always, see this technical development report for more details from different teams.


This week, the Daedalus team worked on LedgerJS package updates to ensure efficient support for hardware wallets.

Work is ongoing on the Lace desktop development. The team kept improving the local node UI features (the ability to see node status by hovering over an icon in the main menu, for example), and completed the proof of concept for ‘wallet auto connect’ within a DApp connector. They also improved the application’s UI and UX and resolved various issues in the development repository.

The Lace light wallet platform will be soon updated on pre-production including new features to test before the mainnet launch. Explore more on the website.

The Adrestia team are still working on extending the multi-signature feature with delegation functionality in cardano-wallet. They're also working on extracting the transaction balancing library, and also on DBLayer refactoring to improve performance and memory usage.

Finally, the team is preparing cardano-js-sdk for production release.


This week, the Plutus team kept working on the Plutus debugger development and script capacity increase. They also continued building indexers for Marconi, addressed more technical debt, and improved documentation.

This week, the Marlowe team ran some fix and unit tests for timed-out validity interval computation, improved program names and command-line options, and implemented an initial partial index of Marlowe contracts in Marlowe Explorer. They also added property-based and integration tests to the protocol, fixed some Marlowe sync issues and added new query tests. 

Finally, they created the basic partial version of the marlowe-runtime-ts client library, added UI for entering the Actus contract terms, and decoupled actus-core from marlowe-cardano. 


The Hydra team completed work on a different way of dealing with contests during the contestation period. These will now always push the deadline out, making contestation periods easier to pick depending on the network a head runs on. They also added an important acceptance test and completed internal refactoring of the protocol logic, making future changes easier to implement.

The Mithril team worked on completing the implementation of the seamless hard updates of their networks with the era switch behavior they had designed. They also created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI. Additionally, the team completed the implementation of the monitoring of the deployment rate of the signer node versions that will help them know when an era switch is ready to be activated.

Finally, they started designing the certification of generic types of data in the Mithril certificate chain.


ネットワーキングチームはP2Pコードの不具合を修正しました。Ouroboros Genesisプロトコルの機能に欠かせないEclipse回避の設計フェーズを完了し、実装作業に入りました。 



コンセンサスチームは、UTXO HDのシステムレベルのベンチマークの結果を分析しました。これは、大幅なパフォーマンスの低下を示しました。分析の結果、台帳のスナップショットが作成される頻度が高すぎることが判明したため、より現実的なスナップショットポリシーに基づく別のベンチマークチェックを要求しました。プロトタイプの改良を続け、UTXO HD関連パッケージをリリースしました。



ouroboros-consensus v.とouroboros-consensus-cardanoを CHAPにリリースしました。












Basho( スケーリング)