Mithril update 2025-11-12 (#685)

* Mithril update 2025-11-12

* Update blog/2025-11-12-mithril.md

Co-authored-by: olgahryniuk <67585499+olgahryniuk@users.noreply.github.com>

---------

Co-authored-by: olgahryniuk <67585499+olgahryniuk@users.noreply.github.com>

Author: jpraynaud

blog/2025-11-12-mithril.md

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+---
+title: Mithril Team Update
+slug: 2025-11-12-mithril
+authors: jpraynaud
+tags: [mithril]
+hide_table_of_contents: false
+---
+
+## 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](https://github.com/input-output-hk/mithril/issues/2692)
+- Worked on the issue **Implement a simple aggregator discovery mechanism** [#2726](https://github.com/input-output-hk/mithril/issues/2726)
+- Worked on the issue **Architecture of the SNARK-friendly STM library** [#2763](https://github.com/input-output-hk/mithril/issues/2763)
+- Worked on the issue **Implement Schnorr signature scheme in STM** [#2756](https://github.com/input-output-hk/mithril/issues/2756)
+- Worked on the issue **Refactor error handling in STM library** [#2764](https://github.com/input-output-hk/mithril/issues/2764)
+- Worked on the issue **Experimental blst-Jubjub** [#2772](https://github.com/input-output-hk/mithril/issues/2772)
+
+### Protocol maintenance
+
+- Released the hotfix distribution [`2543.1-hotfix`](https://github.com/input-output-hk/mithril/releases/tag/2543.1-hotfix)
+- Completed the issue **Some signers have KES errors during key registration** [#2771](https://github.com/input-output-hk/mithril/issues/2771)
+- Worked on the issue **Refactor AggregatorClient trait in signer** [#2759](https://github.com/input-output-hk/mithril/issues/2759)
+- Worked on the issue **Enhance protocol security page on website** [#2703](https://github.com/input-output-hk/mithril/issues/2703)