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· 2 min read
Ziyang Liu

High level summary​

We’ve completed the implementation of CIP-0153, introducing the Value built-in type and its associated functions. Our current focus is on finalizing the costing for these built-ins. Once this is complete, Plutus will be ready for the intra-era hard fork. All other features scheduled for the hard fork are already finished.

We’ve improved the Flat decoding of built-in lists, which has noticeably sped up Plutus script deserialization. In our benchmarks, some scripts' deserialization now runs with double-digit performance gains.

We’ve updated the Plutus Core specification and the Agda formalization to include the multi-scalar multiplication primitives (CIP-0133). Additional property and conformance tests have also been added for these primitives.

The team is also gearing up for UPLC 2025, a UPLC event scheduled to take place in approximately three weeks.

Low level summary​

Key Pull Requests Merged​

Issues and Pull Requests In Progress​

  • Built-in Value: costing (in plutus-private)

· One min read
Damian Nadales

High level summary​

  • Added a Linear Leios draft impact analysis for Consensus.
  • Tweag showcased the first Peras milestone. The demo is accessible through this link. The first Peras PR, which introduced the basic types to support Peras, was merged into main. The second Peras PR is currently under review.
  • KES agent code changes have been integrated as part of version 10.6. The KES agent is not active yet; release is pending audit and integration testing on our end.

· One min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team focused on integrating the Haskell DMQ node with Mithril nodes. They also finished the preparatory phase and started the first phase of decentralizing configuration parameters. Work continued on supporting multiple proof systems and developing an implementation plan for Mithril succinct proofs using a SNARK-friendly version of the STM cryptographic library.

Finally, the team replaced vulnerable Rust dependencies for YAML parsing and made progress refactoring the STM cryptographic library.

Low level overview​

  • Worked on the issue Support multiple aggregation proof systems in STM library #2680
  • Worked on the issue Decentralization of configuration parameters - Phase 1 #2692
  • Worked on the issue Integrate the Haskell DMQ node #2674
  • Worked on the issue Enhance STM library readability #2568
  • Worked on the issue Replace serde_yml unmaintained crate #2700

· One min read
Noon van der Silk

What did the team achieve?​

  • Enable recovering a deposit when the head is closed #1812
  • Progress on staying up to date with the chain even when there's no head logic events #2206
  • Improved Blockfrost error reporting, in leight of user-reported issue #2194
  • Configurable wait-times for blockfrost #2058
  • Partial commits for tokens as well #2180
  • Fixed TUI not listing UTxO's that are committed #2201
  • Permissive reading of the statefile if it contains bad JSON #2255

What's next?​

  • Best practice documentation for committing a script UTxO #1906
  • Start working on partial fanout #1468
  • Continue working on HTLC example in Hydra #2080
  • Continue working on chain following speedups #2206
  • Showcase running Hydra on a Rasberry Pi #2083
  • Release 0.23
  • Continue supporting the Glacier Drop

· 2 min read
John Lotoski

High level summary​

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

Some notable recent changes, updates or improvements include:

  • A substantial amount of effort was placed into the Hydra CI build system during this biweekly period to investigate the root cause of aborted builds due to both logged invalid store paths and logged missing nar cache files. Nushell scripts were written to examine and repair specific closures as well as to walk all nix cache objects and proactively resolve any dangling narinfo files, effectively resolving the aborted builds. Script repair operations were parallelized to speed up the walk rate across the large object count bucket. The root cause was a cache truncation operation which purged a small percentage of objects filtered by oldest age and non-uniformly deleted narinfo and nar objects which needed to remain paired due to self-references. A more intelligent GC approach will be used in the future.

Repository Work -- Merged​

Blockperf​

  • Fixes a new tracing system blockperf implementation error for trace detail level. blockperf-pr-33

Capkgs​

  • Re-adds regular hydraJob builds in addition to fetch-closure only builds to ensure the full jobset can be rebuilt from source. capkgs-commit-range

Cardano-airgap​

  • Adds more boot options for better video driver support, including nouveau nomodeset fallback and open and closed Nvidia drivers. The dconf config file was updated to use the nixos modules declaration. Logout, shutdown, restart and similar gnome operations were fixed. Additional helper packages were added. See the PR header for details. cardano-airgap-pr-9

Devx-ci​

  • Adds ci10, a x86_64-linux builder, to be repurposed later for Equinix metal migration. Sets narinfo-cache-positive-ttl back to default value, sets the default user nofile limit to 4096 from default of 1024 to avoid occasional nofile failures. Rekeys required group secrets to include the new machine, adds ci7, ci8 to the r2 tunnel. Adds a github-hydra-bridge-restarter service to detect when the bridge token has expired and auto-rotate within one minute of expiration. devx-ci-pr-135

Repository Work In Progress -- PRs and Branches​