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· One min read
Damian Nadales

High level summary​

This week we managed to integrate in the node the Consensus version of the UTxO-HD prototype that features the second version of the Ledger DB API. We also changed the epoch structure for Conway, made progress towards the Bootstrap State Machine and Peras planning. On the support front, we are investigating the impact of snapshots on missed leadership checks.

· 2 min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team kept implementing a new data type for certifying Cardano transactions within Mithril networks. They completed the aggregator routes responsible for generating proofs of membership for a list of Cardano transactions and for listing produced artifacts. Additionally, they worked on extending the Mithril client library to support the verification of Cardano transactions, and on the creation of the new Mithril network running on SanchoNet.

Finally, the team kept working on the threat modeling and risk analysis for the Mithril network and investigated some flakiness occurring in the end-to-end tests in the CI.

Low level overview​

  • Completed the issue Implement proof generation route in the aggregator #1467
  • Completed the issue Implement artifact routes in the aggregator #1478
  • Completed the issue Enhance ImmutableFile list computation resilience #1450
  • Completed the issue Add WASM client step in Mithril Client multi-platform test #1408
  • Completed the issue Enhance end to end test for Cardano hard forks #1464
  • Worked on the issue Implement transactions verification in client library #1468
  • Worked on the issue P2P threat modeling and risk analysis #1350
  • Worked on the issue Create a test network on SanchoNet #1173
  • Worked on the issue Enhance Mithril/Cardano node communication #1315
  • Worked on the issue Some end to end tests are flaky in the CI #1147
  • Worked on the issue Handle cancellation of certificate verification in WASM client #1480
  • Worked on the issue Upgrade http dependency #1474
  • Worked on the issue Generate automatic documentation for CLIs #1471

· 2 min read
Marcin Szamotulski

High-level overview of sprint 54​

In this sprint, we merged the bootstrap peers (aka weak genesis) changes to the ouroboros-network repository (ouroboros-network#4615). We continued working on integration & testing it using an early development version of cardano-node (cardano-node#5485).

Andrew Westberg (DripDropz) noticed and fixed a mistake in the cddl spec which resulted in misleading documentation; ouroboros-network#4790. The Handshake protocol flag should be called initiatorOnlyDiffusionMode. Library authors providing connectivity with other nodes via the node-to-node protocol are advised to review their implementation.

We continued working on the tx-submission decision logic; ouroboros-network#3311.

Karl Knutsson (CF) implemented:

Open Source Contributions​

IOSim​

We released a new version of io-sim to Hackage:

NoThunks​

We released a new version of nothunks to Hackage:

Low-level summary​

· One min read
John Lotoski

High level summary​

The SRE team continues work on cardano environment improvements and general environment maintenance.

Some notable recent changes, updates or improvements include:

  • Cardano explorer is being sunset and will soon be replaced by a new Cardano Foundation explorer
  • IOG mainnet pools are now participating in propagation time reporting using Cardano Foundation's blockperf tool
  • Cardano-parts node nixosConfigurations, node entrypoint and process-compose node jobs now utilize mithril client automatically on preview and preprod networks for faster synchronization of first start up. Mainnet mithril client use as well as signer modules will be available soon.

Lower level summary​

Cardano-mainnet​

Cardano-parts​

  • Adds a block performance module which utilizes cardano-foundation's blockperf for aggregate block propagation reporting: cardano-parts-pull-29
  • Adds a mithril client for nixosConfigurations, process-compose cardano-node processes and cardano-node entrypoint: cardano-parts-pull-30

Iohk-nix​

  • Adds required mithril client environment information for preview, preprod, mainnet: iohk-nix-pull-570

Cardano-world​

Upstream Contributions​

Blockperf​

· One min read
Sebastian Nagel

High-level Summary​

This week, the Hydra team authored and published the monthly report for January 2024, enhanced user feedback for failed commands, updated cardano-api dependency and GHC to newer versions, re-opened their persistent head in preparation for the hard-fork, extended the model-based testing suite to cover the closing of heads, fixed a bug in io-sim, and contributed to cardano-node.

What did the team achieve this week​

What are the goals of next week​

  • Fix the fanout after contest bug #1260
  • Run Hydra smoke tests on sanchonet #1257
  • Specify the on-chain validators for incremental decommits #1057
  • Have the explorer hosted #696
  • Prepare PRs for dropped JSON instances from API #1213