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· 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:

  • An Oakhost cloud Mac M4 machine was on-boarded into the mixed Hetzner and prem Darwin CI environment. An internal documentation guide was written for fast Oakhost onboarding if a need to scale Darwin resources further presents itself.

  • Adawallet received a feature upgrade to to handle native tokens in a number of subcommands for adawallet accounts. The cardano-airgap image was updated to include this capability.

  • A new IOHK signing authority key for email signing.authority@iohk.io with GPG key fingerprint ending in 0xCD0171BC90, was placed into production for package signing. The public key can be found here.

Repository Work -- Merged​

Adawallet​

  • Adds multiasset support to adawallet in select contexts such as send-tx, drain-tx, bulk-drain-tx, migrate-wallet, import-utxos, export-utxos. When the multiasset option is used native tokens are aggregated into a single UTXO with the minimum amount of lovelace required and lovelace only UTXOs are handled separately. A future improvement would be to handle large native tokens collections which may hit transaction size limits. adawallet-pr-24

Cardano-airgap​

Devx-ci​

  • Adds oak-m4-1 machine to the build cluster with associated monitoring, secrets, hydra ssh and build machine defn. Updates darwin.sh with a -b, --bindir optional arg to allow an easier darwin bootstrapping deployment. Bumps opentofu grafana provider to 4.5.3, makes a common Hetzner linux module, smaller Hetzner linux variant specific modules and refactors the existing Hetzner linux machines under those. Moves hetzner-m1.nix to darwin-state-version.nix module used by both Hetzner and Oakhost darwin machines. Adds a few clarification comments to the distributed builds nixosModule. devx-ci-pr-133

Ops-lib​

  • Bumps devShell and machines nix to 2.29.1, bumps deployed machines to nixpkgs 25.05 with a small patch for nixops to continue operating, bumps iohk-nix to current head and niv to latest sources.nix. Cleans up the ssh key overlay and removes sentry relevant package, modules and scripts as usage is deprecated. Makes misc required nixos-25.05 nixpkgs module updates. ops-lib-pr-136

Repository Work In Progress -- PRs and Branches​

· 2 min read
Alexey Kuleshevich

High level summary​

We've implemented a feature for the next intra-era hard fork that enforces a property that is desired by the consensus componenet, which enforces uniqueness of VRF keys used by stake pools. Furthermore, we've progressed with PlutusV4 integration into Dijkstra era. Besides new features we've also tackled some tech debt and fixed a bug with JSON decoding of Alonzo Genesis file.

Low level summary​

Features​

  • PR-5232 - Activate future stake pools in PoolReap
  • PR-5176 - add queryDRepDelegations ledger state query
  • PR-5242 - Adds NFData instances for Genesis types
  • PR-5241 - Fix JSON parsing for CostModels
  • PR-5230 - Avoid branching on translateUpperBoundForPlutusScripts protocol version
  • PR-5229 - Disallow duplicate VRF keys for pool registration
  • PR-5236 - Add PlutusScript DijkstraEra
  • PR-5234 - Move pool deposits into StakePoolState
  • PR-5254 - Simplify POOLREAP

Testing​

  • PR-5248 - Limit the map size when generating gov procedures with constrained-generators
  • PR-5246 - Increase the max ExUnits in AlonzoEraGen
  • PR-5245 - Added Cuddle validation test

Infrastructure and releasing​

  • PR-5228 - Add undefined check to Github Actions
  • PR-5244 - Reverts #5188
  • PR-5235 - Add scripts for adding and updating srp's in cabal.project
  • PR-5251 - Bumped haskell-language-server to v2.11.0.0

· One min read
Jean-Philippe Raynaud

High level overview​

This week, the Mithril team continued implementing the mock DMQ node to support end-to-end testing of decentralized signature diffusion. They also worked on resolving a circular dependency issue with the operational certificate in the KES signer module and completed the upgrade to Cardano node v.10.5. Additionally, the team continued collaborating with the innovation team on prototyping a SNARK proving circuit for Mithril certificates.

Finally, they worked on prototyping a Mithril/Cardano bundle in a Docker image and made progress refactoring the STM cryptographic library.

Low level overview​

  • Completed the issue Remove Operational Certificate circular dependency in KES signature #2668
  • Completed the issue Upgrade to Cardano 10.5 #2623
  • Completed the issue Remove features test_tools and full from mithril-client #2662
  • Worked on the issue Implement a fake DMQ node with Mithril relay #2627
  • Worked on the issue Simple Aggregation Halo2 - Prototype #2526
  • Worked on the issue Update the DMQ message structure #2670
  • Worked on the issue Prototype Mithril/Cardano bundle in Docker image #2616
  • Worked on the issue Enhance STM library readability #2568

· One min read
Marcin Szamotulski

Overview of sprint 94​

Mithril​

We implemented node-to-node mini-protocols for dmq-node, see pr#5183.

The PR with node-to-client mini-protocols for dmq-node (pr#5173) is expected to be merged soon after addressing review comments.

We started working on verification of mithril signatures in the dmq-node, see issue#5175 and issue#5176.

Cardano-Node 10.6​

We also contributed configuration/tracing changes to cardano-node for its 10.6 release. See issue#6304.

TLDR​

We want to simplify user experience of cardano-node for Genesis and Praos modes: the network topology file contains bootstrap peers and genesis snapshot file location, which are only needed in one of the modes. In some cases, parsing shouldn't error (as it does now), but just emit a log message of the right severity. All the corner cases are described in the issue.

Tx-Submission​

The new tx-submission decision logic was merged, see issue#3311. The new tx-submission logic was benchmarked in the ioe performance cluster. Additional work is required to analyse its performance bottlenecks.

· One min read
Damian Nadales

High level summary​

Over the past couple of weeks, the team continued working on LSM and KES agent integration, as well as Peras implementation. On the Leios prototyping front, the team is currently drafting a section in the Leios CIP focused on the new mini-protocols.

Two small improvements to Genesis tracing and metrics were also introduced: #6306 and #1628.