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· 2 min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team released the 2543.1 hotfix distribution, which fixes an issue in the previous release that caused some Mithril signers to stop signing until the end of the current epoch after being restarted.

The team has nearly completed the first phase of decentralizing configuration parameters and continued implementing a simple aggregator discovery mechanism. They also advanced work on the SNARK-friendly STM library by designing its architecture, implementing the Schnorr signature scheme, refactoring error handling, and experimenting with a Jubjub curve implementation in the BLST library.

Finally, the team worked on refactoring the interface used by the signer to interact with the aggregator and improved the protocol security page.

Low level overview​

Features​

  • Worked on the issue Decentralization of configuration parameters - Phase 1 #2692
  • Worked on the issue Implement a simple aggregator discovery mechanism #2726
  • Worked on the issue Architecture of the SNARK-friendly STM library #2763
  • Worked on the issue Implement Schnorr signature scheme in STM #2756
  • Worked on the issue Refactor error handling in STM library #2764
  • Worked on the issue Experimental blst-Jubjub #2772

Protocol maintenance​

  • Released the hotfix distribution 2543.1-hotfix
  • Completed the issue Some signers have KES errors during key registration #2771
  • Worked on the issue Refactor AggregatorClient trait in signer #2759
  • Worked on the issue Enhance protocol security page on website #2703

· 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 new cloud tagging resource effort is underway to better attribute and track project expenses, implemented largely via infrastructure-as-code updates with appropriate secrets handling.

  • As part of the 10.6.0 pre-release candidate SRE to dev feedback loop, a memory leak was identified in the pre-release candidate when LMDB ledger backend was used. Further testing, deployment and debugging work helped identify root cause and a fix was implemented.

  • SRE team facilitated the passage of a governance action on the preprod network, likely to be followed by a mainnet proposal and full community vote.

  • Aarch64 cardano-node nix builds, binary release artifacts and OCI containers will be added to the cardano-node repo in the near future.

  • SRE team is providing support to the Midnight Scavenger Mine project which is now live.

Repository Work -- Merged​

Cardano-monitoring​

  • Adds new resource tags to both CloudFormation and tofu resources: owner, project, costCenter

  • Updates the pre-existing organization and environment tags

  • Treats costCenter tag as secret and adds a corresponding secrets file

  • Updates justfile, CloudFormation state template and tofu cluster definition files to accommodate

  • Adds some default resource tofu defns in prep for ipv6 and default resource tagging

    cardano-monitoring-pr-3

Cardano-perf​

  • Adds new resource tags to both CloudFormation and tofu resources: owner, project, costCenter

  • Updates the pre-existing organization and environment tags

  • Treats costCenter tag as secret and adds a corresponding secrets file

  • Updates justfile, CloudFormation state template and tofu cluster definition files to accommodate

  • Adds some default resource tofu defns in prep for ipv6 and default resource tagging

    cardano-perf-pr-6

Ouroboros-network-ops (Ready to merge -- waiting to align with next cardano-parts release)​

  • Parts was bumped from v2025-06-24 to post-v2025-08-14 release at next-2025-08-14

  • Updates for breaking changes were applied.

  • Adds new resource tags to both CloudFormation and tofu resources: owner, project, costCenter

  • Updates the pre-existing organization and environment tags

  • Treats costCenter tag as secret and adds a corresponding secrets file

  • Updates justfile, CloudFormation state template and tofu cluster definition files to accommodate

    ouroboros-network-ops-pr-30

Repository Work In Progress -- PRs and Branches​

· One min read
Noon van der Silk

What did the team achieve?​

  • Released version 1.1.0 🎉
  • Finished HTLC demo in Hydra #2080
  • Continue working on partial fanout #1468
  • Merged documentation for committing a script UTxO #1906
  • Working on chain following speedups #2206
  • Fixed blockfrost tests in nightly CI #2218

What's next?​

  • Continue working on partial fanout #1468
  • Continue working on chain following speedups #2206
  • Implement a "SafeClose" client input to try and avoid closing when you have unburned minted tokens #2330
  • Improve logging for failed HTTP requests #2315
  • Add API to get head opened time #2316

· 2 min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team released the 2543.0 distribution, which adds support for the default incremental backend (v2) for Cardano database restoration, introduces enhanced integrity verification that reports any tampered or missing files in case of failure, and includes various bug fixes and improvements.

The team also continued implementing a simple aggregator discovery mechanism and advanced work on the first phase of decentralizing configuration parameters. Additionally, they made progress implementing the SNARK-friendly STM library by designing its architecture and implementing the Schnorr signature scheme.

Finally, the team completed the implementation of a common HTTP client for the aggregator and made improvements to the protocol security page.

Low level overview​

Features​

  • Released the new distribution 2543.0
  • Published a dev blog post about the Distribution 2543 availability
  • Completed the issue Release 2543 distribution #2727
  • Worked on the issue Decentralization of configuration parameters - Phase 1 #2692
  • Worked on the issue Implement a simple aggregator discovery mechanism #2726
  • Worked on the issue Architecture of the SNARK-friendly STM library #2763
  • Worked on the issue Implement Schnorr signature scheme in STM #2756
  • Worked on the design of the new blocks certification mechanism

Protocol maintenance​

  • Completed the issue Implement a common aggregator client - Phase 1 #2640
  • Worked on the issue Enhance protocol security page on website #2703

· One min read
Ziyang Liu

High level summary​

The Plutus team organized and attended UPLC 2025, an event dedicated to the UPLC language, held in Edinburgh last week. Session recordings will be available soon.

Based on community feedback, we have added a new Value primitive, scaleValue, to the upcoming intra-era hard fork, along with several minor refinements to other Value primitives.

We have also continued improving the performance of the UPLC evaluator, specifically by optimizing the inlining of the geq function.

Finally, we are progressing with costing for all Value primitives.

Low level summary​

Key Pull Requests Merged​

Issues and Pull Requests In Progress​

  • Costing for Value primitives (in plutus-private)