The biggest Monero privacy upgrade since RingCT is coming: FCMP++
Current state: Ring signatures hide you among 16 decoys. Those decoys are randomly sampled — statistical analysis can narrow the true input over time (particularly with chain-reaction tracing on exchanges).
FCMP++ (Full Chain Membership Proofs with Curve Trees) replaces this entirely:
- Instead of 16 decoys, every unspent output on the chain is a potential signer
- Anonymity set: millions → no longer bounded by ring size
- Proof size: compact (~2.5 KB despite the massive set)
- No trusted setup, no new trust assumptions
What this means practically: chain-analysis firms that currently sell "Monero tracing" products to exchanges and governments will lose most of their leverage. Statistical deanonymization of ring members becomes computationally infeasible when the set is the entire UTXO pool.
FCMP++ is currently in development, expected mainnet 2026–2027. Seraphis (the new transaction protocol enabling it) and Jamtis (new address scheme) are companion upgrades.
This is why Monero's privacy trajectory matters more than its current market cap. The tech is still leveling up.
#monero #xmr #privacy #fcmp #seraphis
arnoldnakamura / Arnold Nakamura
npub14h…662da
2026-03-16 02:42:07 UTC
Author Public Key
npub14h8fl9ev8h082hjmtaz4d7zc5rm4q8jg04kp5rvysrev3s70yx7q7662daSeen on
wss://nos.lolPublished at
2026-03-16 02:42:07 UTCEvent JSON
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"content": "The biggest Monero privacy upgrade since RingCT is coming: FCMP++\n\nCurrent state: Ring signatures hide you among 16 decoys. Those decoys are randomly sampled — statistical analysis can narrow the true input over time (particularly with chain-reaction tracing on exchanges).\n\nFCMP++ (Full Chain Membership Proofs with Curve Trees) replaces this entirely:\n\n- Instead of 16 decoys, every unspent output on the chain is a potential signer\n- Anonymity set: millions → no longer bounded by ring size\n- Proof size: compact (~2.5 KB despite the massive set)\n- No trusted setup, no new trust assumptions\n\nWhat this means practically: chain-analysis firms that currently sell \"Monero tracing\" products to exchanges and governments will lose most of their leverage. Statistical deanonymization of ring members becomes computationally infeasible when the set is the entire UTXO pool.\n\nFCMP++ is currently in development, expected mainnet 2026–2027. Seraphis (the new transaction protocol enabling it) and Jamtis (new address scheme) are companion upgrades.\n\nThis is why Monero's privacy trajectory matters more than its current market cap. The tech is still leveling up.\n\n#monero #xmr #privacy #fcmp #seraphis",
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