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MoneroTalk: Dev Jeffro256 on FCMP++ and Carrot: Launching Soon?www.youtube.com/watch?v=tB6HxCmTasE original ↗
1 mXMR \ 3 comments \ @SovStack 17 Oct monero

Great episode with Jeffro and Doug to get the latest updates from a Monero dev on the devs path to FCMP++

The GAANT chart is also great visual aid to follow whats currently happening

Timestamps:

0:00 Intro and sponsors (Cake Wallet, Stealth EX)

1:00 Catch-up: family life, NY governor's race, BitLicense, AI/data center politics

7:00 One year since Jeffro's last appearance — how far has FCMP++ come?
8:00 Is this Monero's biggest upgrade ever? FCMP++ vs. the RingCT upgrade

10:00 Audit status: three-phase plan, phases 1–2 done, ongoing code audits

15:00 Timeline and the merge announcement — Gantt chart (https://html-preview.github.io/?url=https://github.com/jeffro256/fcmp-carrot-plan/blob/master/fcmp%2B%2B-carrot.html), six-month window

16:50 Licensing saga: permissive vs. copyleft, the MX25519 compromise

25:20 AI decompiling closed-source software — "you can't keep code closed anymore"

27:00 Could AI break elliptic curve crypto? AI vs. quantum threat debate

35:00 LLM-generated bug reports: Monero's LLM policy, automated PR review

38:30 Funding development: CCS, Magic, and recruiting vs. Zcash's dev fund

44:20 Fuzz testing and what it actually does

46:00 AI-auditing Monero: OSS-Fuzz, Anthropic's OSS Scanner, the Zcash precedent

52:00 FCMP++ feature rundown: 160M+ anonymity set, Zcash-level sender privacy

54:20 Stressnet V4, Transaction relay v2: bandwidth savings found in the stress nets

59:55 RandomX v2, proof-of-work commitments

1:01:55 Multisig, cold wallets, hardware wallets — impact on XMR Bazaar

1:07:00 Payment channels: signing ahead of proofs, transaction chaining, Serai

1:15:45 Future research: post-quantum turnstile, Tachyon-style scaling, finality layers

1:30:30 Listener questions: stealth addresses vs. silent payments, KISS, scrapped research

1:41:00 Zano hack, Zcash inflation bug and turnstile debate

1:44:00 Wrap-up: Monerotopia (targeting April) and outro

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2 mXMR \ 1 reply \ @shortwavesurfer2009flame 17 Oct freebie

I will definitely have to watch this later. I'm just waiting for the podcast version of it to be released

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0 mXMR \ 0 replies \ @SovStack OP 17 Oct freebie

Yes, this is such a good episode

A great overview of the upcoming hardfork including features, and even discussing the prospective next steps after FCMP++

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0 mXMR \ 0 replies \ @SovStack OP 17 Oct freebie

FCMP++ features:

  • Massive anonymity set increase — sender anonymity set goes from ~16 to over 160 million per transaction input (a 10-million-fold increase), giving Zcash-level sender privacy
  • Carrot addressing protocol and new addresses — new address scheme with new view keys (also fixes issues like the burning bug and Janus attack, and enables outgoing view keys and offline address generation)
  • Transaction relay v2 — bandwidth-efficient transaction relay (32-byte tx IDs instead of full ~10 KB transactions)
  • RandomX v2 — improved ASIC resistance
  • Proof-of-work commitments — better DoS/spam resistance for nodes; easier SPV-style wallet verification since proof-of-work can be checked without running a full RandomX hash (important for resource-constrained devices)
  • Vastly improved multisig — no need for all parties to be online (or recently online) to sync key images; far fewer interaction rounds between participants
  • Simplified hot/cold wallets and hardware wallet support — cold signing and vaults become much easier (part of why projects like XMR Bazaar and hardware wallet integrations struggled before)
  • Signing before proving (decoupled signatures/proofs) — transactions can be signed ahead of time and membership proofs attached later, with no on-chain fingerprint distinguishing old vs. new signatures
  • Transaction chaining / conditional spends — enables simple payment channel-style constructions (lock-time conditions, atomic-swap-style escapes) — an open PR by Teodor adds a basic version
  • Faster wallet scanning — via the mx25519 library (~40% faster scanning compute in the assembly backends)
  • Fungibility/privacy parity — closes the "Zcash is more private" sender-side gap; amounts and receivers were already protected

several of these (multisig relief, hot/cold simplicity, sign-then-prove) are the exact features Serai DEX is waiting on before launching its Monero integration.

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