Logbook

This page records a log of the team’s work, thinking, discussions, pains, joys, events, and experiences that happen on a daily basis. It’s supposed to be a kind of Stream of consciousness that can later be searched, analyzed, reviewed in more formal retrospectives.

Rules:

• Log days in reverse chronological order, recent first

• When the stream is getting too big, such that github refuses to render do the following:

  • extract biggest logical section (half-year or quarter) out of this into a correspondingly named Logbook-Year-Hn.md or Logbook-Year-Qn.md page
  • update links on top of this page to make it easier to navigate try to fix all links in the wiki at least
  • notify the team

• Move (and link) recurring sections to relevant dedicated pages.

History

• January 26

2025-H2

• December 25
• November 25
• October 25
• September 25
• August 25
• July 25

2025-H1

• June 25
• May 25
• April 25
• March 25
• February 25
• January 25

2024-H2

• December 24
• November 24
• October 24
• September 24
• August 24
• July 24

2024-H1

• June 24
• May 2024
• April 2024
• March 2024
• February 2024
• January 2024

2023-H2

• December 2023
• November 2023
• October 2023
• September 2023
• August 2023
• July 2023

2023-H1

• June 2023
• May 2023
• April 2023
• March 2023
• February 2023
• January 2023

2022-H2

• December 2022
• November 2022
• October 2022
• September 2022
• August 2022
• July 2022

2022-H1

• June 2022
• May 2022
• April 2022
• March 2022

2021

• 2021

January 2026

2026-01-10

• Update protocol parameters to SNARK friendly values #2813: the protocol parameters have been validated, we will start rolling out the new protocol parameters
• Implement SNARK-friendly changes in STM library #2795: the PR SNARK-friendly STM: New Key Registration #2880 is being updated. The PR Golden test for Closed Key Registration #2901 is ready to be merged
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: the PR feat(aggregator): replace cexplorer pools ticker retriever with a blockfrost based implementation #2896 is being updated and will be merged shortly
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated
• Release 2603 distribution #2830: we have kept working on the issue
• Use Midnight ZK backends for Jubjub and Poseidon in STM #2888: the PR Rename mithril-stm schnorr module #2903 is pending review. The PR Change jubjub and poseidon backend from Dusk to MidnightZK #2898 is pending review
• No more available disk space on GitHub runners #2906: the bug issue has been created. The PR ci: optimize rust test disk space usage #2916 has been created, reviewed and merged. The issue is closed
• Create new signed entity type for Cardano Blocks and Transactions #2905: the issue has been created and groomed
• Import Blocks and Transactions in new store for Cardano Blocks and Transactions #2907: the issue has been created and groomed
• Implement signable builder for Cardano Blocks and Transactions #2908: the issue has been created and groomed
• Add throttling to Blocks and Transactions preloader #2909: the issue has been created and groomed
• Update the Midnight library dependency in circuit prototype #2910: the issue has been created and groomed
• Create SNARK circuit new module in STM #2911: the issue has been created and groomed
• Add golden tests for Halo2 circuit prototype #2912: the issue has been created and groomed
• Keep track of signers involved in the SNARK proof with committed instance #2913: the issue has been created and groomed
• Test wrapper circuit proof in Risc Zero #2914: the issue has been created and groomed
• Support for authenticated signer registration for SNARK #2915: the issue has been created and groomed

2026-01-09

• Update protocol parameters to SNARK friendly values #2813: the protocol parameters have been validated, we will start rolling out the new protocol parameters
• Implement SNARK-friendly changes in STM library #2795: the PR SNARK-friendly STM: New Key Registration #2880 is being updated. The PR Golden test for Closed Key Registration #2901 has been created and reviewed, it is ready to be merged
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: the PR feat(aggregator): replace cexplorer pools ticker retriever with a blockfrost based implementation #2896 has been reviewed and is being updated
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated. The PRs docs: add dev blog post for DMQ testing program with SPOs #2883 has been reviewed and merged
• Nightly tests does not fetch latest main artifacts #2879: the PR ci: fix aggregator stress test parameters handling #2900 has been created, reviewed and merged. The issue is closed
• Release 2603 distribution #2830: we have started to work on the issue
• Use Midnight ZK backends for Jubjub and Poseidon in STM #2888: the PR Rename mithril-stm schnorr module #2903 has been created and is pending review. The PR Change jubjub and poseidon backend from Dusk to MidnightZK #2898 has been created and is pending review
• We have also made sure that none of our test SPOs needed their KES keys rotated

2026-01-08

• Upgrade to Cardano 10.6 #2790: the issue is closed as 10.6 will likely never be released
• Update protocol parameters to SNARK friendly values #2813: the protocol parameters have been validated, we will start rolling out the new protocol parameters
• Implement SNARK-friendly changes in STM library #2795: the PR SNARK-friendly STM: New Key Registration #2880 is being updated
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: the PR feat(aggregator): replace cexplorer pools ticker retriever with a blockfrost based implementation #2896 has been created and is pending review
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated. The PRs docs: add dev blog post for DMQ testing program with SPOs #2883 is being reviewed. The PR docs: add dev blog post for multiple aggregators testing program #2884 is being reviewed
• Prepare recursive Halo2 circuit implementation MVP #2886: the issue has been created
• Implement SNARK aggregation primitives in STM library #2887: the issue has been created
• Use Midnight ZK backends for Jubjub and Poseidon in STM #2888: the issue has been created
• Implement SNARK primitives in STM #2889: the issue has been created
• SNARK-friendly STM MVP - Phase 2 #2890: the issue has been created
• Feasibility of Bitcoin Defi usecase - Phase 2 #2891: the issue has been created
• SNARK-friendly Mithril nodes #2892: the issue has been created
• Prepare Mithril nodes for recursive SNARK #2893: the issue has been created
• Upgrade to Cardano 10.7 #2894: the issue has been created
• Implement Halo2 circuit in STM library #2895: the issue has been created
• Extract Merkle forest modules in new crate #2897: the issue has been created
• We have also prepared the sprint planning for the next iteration

2026-01-07

• Upgrade to Cardano 10.6 #2790: we are waiting for Cardano 10.6.2 to be released before moving forward
• Update protocol parameters to SNARK friendly values #2813: the protocol parameters have been validated, we will start rolling out the new protocol parameters
• Assess constraints on Halo2 circuit verification #2799: the proposals have been reviewed, the issue is closed
• Support test mode for the Halo2 circuit #2798: the proposals have been reviewed, the issue is closed
• Detect an under constrained Halo2 circuit #2801: the proposals have been reviewed, the issue is closed
• Implement SNARK-friendly changes in STM library #2795: the PRs SNARK-friendly STM: Single signature of concatenation proof #2875 and SNARK-friendly STM: Remove Deprecated Items #2881 have been reviewed and merged. The PR SNARK-friendly STM: New Key Registration #2880 is being updated
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: we have kept working on the issue and the developments have been pushed to the djo/2878/aggregator-replace-spo-ticker branch
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated. The PRs docs: add dev blog post for DMQ testing program with SPOs #2883 and docs: add dev blog post for multiple aggregators testing program #2884 are being reviewed. The PR feat: use final DMQ magic numbers #2885 has been created, reviewed and merged

2026-01-06

• Upgrade to Cardano 10.6 #2790: we are waiting for Cardano 10.6.2 to be released before moving forward
• Update protocol parameters to SNARK friendly values #2813: we are pending final validation of protocol parameters before moving forward
• Assess constraints on Halo2 circuit verification #2799: the proposals are being reviewed
• Support test mode for the Halo2 circuit #2798: the proposals are being reviewed
• Detect an under constrained Halo2 circuit #2801: the proposals are being reviewed
• Implement SNARK-friendly changes in STM library #2795: the PRs SNARK-friendly STM: Single signature of concatenation proof #2875, SNARK-friendly STM: New Key Registration #2880 and SNARK-friendly STM: Remove Deprecated Items #2881 have been reviewed and are pending update
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: we have kept working on the issue and the developments have been pushed to the djo/2878/aggregator-replace-spo-ticker branch
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated. The PR refactor: introduce KesEvolutions type #2869 has been updated and merged. the PR docs: add dev blog post for DMQ testing program with SPOs #2883 has been created and is pending review. The PR docs: add dev blog post for multiple aggregators testing program #2884 has been created and is pending review
• Design strategy for enhanced support of Cardano versions #2856: the issue has been updated with the strategy which is being reviewed

2026-01-05

• Upgrade to Cardano 10.6 #2790: we are waiting for Cardano 10.6.2 to be released before moving forward
• Update protocol parameters to SNARK friendly values #2813: we are pending final validation of protocol parameters before moving forward
• Assess constraints on Halo2 circuit verification #2799: the proposals are being reviewed
• Support test mode for the Halo2 circuit #2798: the proposals are being reviewed
• Detect an under constrained Halo2 circuit #2801: the proposals are being reviewed
• Implement SNARK-friendly changes in STM library #2795: the PRs SNARK-friendly STM: Single signature of concatenation proof #2875, SNARK-friendly STM: New Key Registration #2880 and SNARK-friendly STM: Remove Deprecated Items #2881 have been created and are being reviewed
• Follower aggregator panics in e2e tests in run-only mode #2770: we have kept investigating the problem and working on a fix
• Proposals for Mithril/DMQ as optout feature of Cardano #2831: we have kept working on the issue
• Replace SPO ticker API in aggregator #2878: the issue has been created and groomed. We have started to work on it
• DMQ testing with SPOs on preview #2833: the draft PR feat: DMQ node infrastructure #2870 has been updated. The PR refactor: introduce KesEvolutions type #2869 has been reviewed and will be merged shortly. The PR doc: add DMQ node setup in Mithril signer guide #2872 has been reviewed and merged. The PR fix: better support for signature registration errors in aggregator signature processor #2873 has been reviewed and merged
• Add a new guide on how to setup a follower aggregator #2815: the PR doc: add aggregator setup guide #2876 has been created, reviewed and merged. The issue is closed
• Design strategy for enhanced support of Cardano versions #2856: the issue has been updated with the strategy which is being reviewed