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| 1 | +--- |
| 2 | +title: Mithril Team Update |
| 3 | +slug: 2026-01-28-mithril |
| 4 | +authors: jpraynaud |
| 5 | +tags: [mithril] |
| 6 | +hide_table_of_contents: false |
| 7 | +--- |
| 8 | + |
| 9 | +## High level overview |
| 10 | + |
| 11 | +This week, the Mithril team prepared the pre-release for the `2603.1-pre` distribution. This version introduces support for the DMQ protocol, preliminary support for decentralized configuration, implementation of the Blockfrost API to fetch stake pool operators' pool tickers and names, and various bug fixes and improvements. |
| 12 | + |
| 13 | +The team focused on implementing the SNARK-friendly STM library, advanced the non-recursive SNARK circuit MVP, and progressed work on pre-aggregation and recursive SNARK circuits. |
| 14 | + |
| 15 | +Additionally, they worked on the new certification for Cardano blocks and transactions, implementing the storage layer, the artifact builder, and the throttled preloader. |
| 16 | + |
| 17 | +Finally, they continued documenting proposals to integrate Mithril and DMQ nodes with Cardano and updating the protocol security page. |
| 18 | + |
| 19 | +## Low level overview |
| 20 | + |
| 21 | +### Features |
| 22 | + |
| 23 | +- Completed the issue **Implement SNARK-friendly changes in STM library** [#2795](https://github.com/input-output-hk/mithril/issues/2795) |
| 24 | +- Completed the issue **Create SNARK circuit new module in STM** [#2911](https://github.com/input-output-hk/mithril/issues/2911) |
| 25 | +- Completed the issue **Implement Digest for Poseidon hash from Midnight ZK** [#2942](https://github.com/input-output-hk/mithril/issues/2942) |
| 26 | +- Completed the issue **Synchronization of modifications between Halo2 circuit in STM and prototype** [#2947](https://github.com/input-output-hk/mithril/issues/2947) |
| 27 | +- Completed the issue **Create new signed entity type for Cardano Blocks and Transactions** [#2905](https://github.com/input-output-hk/mithril/issues/2905) |
| 28 | +- Worked on the issue **Release 2603 distribution** [#2830](https://github.com/input-output-hk/mithril/issues/2830) |
| 29 | +- Worked on the issue **Document recursive SNARK solution** [#2767](https://github.com/input-output-hk/mithril/issues/2767) |
| 30 | +- Worked on the issue **Update protocol parameters to SNARK friendly values** [#2813](https://github.com/input-output-hk/mithril/issues/2813) |
| 31 | +- Worked on the issue **Implement SNARK pre-aggregation primitives in STM library - Phase 1** [#2792](https://github.com/input-output-hk/mithril/issues/2792) |
| 32 | +- Worked on the issue **Add golden tests for Halo2 circuit prototype** [#2912](https://github.com/input-output-hk/mithril/issues/2912) |
| 33 | +- Worked on the issue **Avoid panic in AggregateVerificationKeyForConcatenation conversion** [#2954](https://github.com/input-output-hk/mithril/issues/2954) |
| 34 | +- Worked on the issue **Import Blocks and Transactions in new store for Cardano Blocks and Transactions** [#2907](https://github.com/input-output-hk/mithril/issues/2907) |
| 35 | +- Worked on the issue **Implement artifacts builder for Cardano Blocks and Transactions** [#2955](https://github.com/input-output-hk/mithril/issues/2955) |
| 36 | +- Worked on the issue **Add throttling to Blocks and Transactions preloader** [#2909](https://github.com/input-output-hk/mithril/issues/2909) |
| 37 | +- Worked on the issue **Proposals for Mithril/DMQ as optout feature of Cardano** [#2831](https://github.com/input-output-hk/mithril/issues/2831) |
| 38 | +- Worked on the issue **Pallas DMQ publisher keeps open connection to DMQ node** [#2961](https://github.com/input-output-hk/mithril/issues/2961) |
| 39 | + |
| 40 | +### Protocol maintenance |
| 41 | + |
| 42 | +- Pre-released the new distribution [`2603.1-pre`](https://github.com/input-output-hk/mithril/releases/tag/2603.1-pre) |
| 43 | +- Worked on the issue **Enhance protocol security page on website** [#2703](https://github.com/input-output-hk/mithril/issues/2703) |
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