Meeting summary: Monero Research Lab, 9 September 2026

This is a comprehensive summary, with added reference links, of the MRL meeting¹ from September 9th 2026, 1700 UTC.

Logs

The raw, unedited, full log file for this meeting:

260909-mrl.log (83 lines)

Summary

Note: it is possible that some relevant information may be missing from this summary; read the full log file for the complete, unedited discussion.

• Participants: 8 (rucknium², vtnerd³, j​berman⁴, ack-j⁵, tevador⁶, sgp_⁷, boog900⁸, sech1⁹)

• (1) Updates

  • vtnerd was going through the SSL review by an LLM and working on serialization/lws stuff¹⁰

  • rucknium finished the monerosim spy node analysis and was interested in restarting research on selfish mining defenses¹¹

  • tevador was working on mx25519, polyseed and relative locks¹²

  • ack-j was improving monero-review by implementing feedback from reviewers¹³

  • jberman finished reviewing the FCMP++/Carrot hot-cold wallet PR, touched up the tx relay v2 PR and was working on some upstream PR review; he also reported that all phase 2 FCMP++ integration upstream PR’s were ready for review¹⁴

  • sech1 was working on P2Pool v5, which was progressing at a good pace: I’ll start testing it on the stressnet next week - not a feature complete version, but a version with minimal required FCMP++/Carrot code¹⁵

• (2) Open discussions

  • (2.1) on the FCMP++ to-do list status:

    • rucknium shared relevant links for the associated programming tasks, reviews and audits, integration audit overview and network upgrade schedule¹⁶

      • j​berman thanked jeffro256 for working on the hot/cold wallet PR¹⁷ - the next major milestone - which is nearly complete; then reported that all quotes for the research tasks were received: we’re evaluating the quotes to audit the circuit + gadgets impl + fcmp-plus-plus lib

      • sgp_ noted that a total of 7 quotes were received: the goal is to make a decision during the next meeting; then promised to share more info on Monday in the MRL channel

  • (2.2) on the ‘monerosim’ spy node analysis¹⁸:

    • r​ucknium reported that the first ever test of Monero’s D++ spy node resistance that uses a network of real running nodes passed, after reminding everyone of the purposes of monerosim: to test the resistance of Monero’s implementation of Dandelion++ against a spy node adversary and to test and establish a statistical methodology to use the monerosim network simulator to measure network behavior

      • tevador acknowledged that the test is interesting but questioned its practicality: spy nodes don’t behave the same way as honest nodes

      • rucknium agreed that the simulation isn’t realistic: I wanted to, at least at first, reproduce the D++ theoretical results.

      • sgp_ asked about the status of the monerosim project; rucknium confirmed that they were planning to focus on selfish mining next

  • (2.3) on ‘Relative locks’ with FCMP++¹⁹:

    • tevador shared that they got stuck on a hack in the FCMP++ test code while trying to add some tests to the relative locks PRs

    • tevador invited discussing this topic further in the #no-wallet-left-behind channel²⁰, after confirming to rucknium that relative locks have no impact on the tree building process

  • (2.4) on the FCMP beta stressnet²¹:

    • jberman shared that all side PR’s are prepared for the beta v3 stressnet: next is just hot/cold wallet PR then rebasing on latest master

• (3) Any other business

  • sgp_ disclosed that MAGIC Grants²² approved and paid for a full review of the BP+ security proofs after a contracted researcher identified - a few months ago - a potential soundness (inflation) issue; further analysis no known issues were discovered: report will be posted publicly in full in the coming days

Let me know if you find this kind of report helpful.

Feedback, edits always welcome @/about.

-3RA