FCMP++ (Full-Chain Membership Proofs) is a Monero protocol upgrade that replaces the ring-signature decoy system with a proof drawn from the entire set of on-chain outputs. Instead of hiding a real spend among a fixed ring of 16 decoys, the sender proves membership across every eligible output on the chain. For anyone who swaps into or out of XMR, the practical question is simple: does your swap service still work after the change? On GhostSwap, yes — XMR swaps run exactly as before, with no account and no KYC.
TL;DR: GhostSwap supports Monero (XMR) swaps after the FCMP++ upgrade. Swapping is unchanged from your side: pick a pair, send funds, receive XMR at your address — no account, no email, no identity verification.
FCMP++ is a Monero upgrade that swaps ring signatures for full-chain membership proofs, so a spend is hidden among all eligible outputs on the chain rather than a small fixed decoy set.
What FCMP++ changes for Monero
FCMP++ replaces Monero's ring-signature model with full-chain membership proofs. Under ring signatures, each spend was concealed inside a fixed decoy set — a ring of a set size chosen from recent outputs. FCMP++ instead proves that a spent output belongs to the whole set of eligible outputs on the chain, which removes the fixed-ring size limit as the boundary of the anonymity set.
This is a base-layer protocol change. It affects how Monero constructs and verifies transactions, not how you interact with a swap service. Wallets and node software implement the new proof format; you sign and broadcast as usual. For technical detail on the design and its status, see the Monero project's FCMP++ resources and the Monero research lab (retrieved 2026-09-05).
Because FCMP++ is a consensus-level change, the thing to watch is whether your wallet and the service you swap through have updated their Monero support. That is a software-compatibility question, not a change to the swap flow itself.
Does GhostSwap still support XMR swaps after FCMP++?
Yes. GhostSwap continues to support Monero swaps after FCMP++, and the process on your side does not change. GhostSwap is a no-KYC crypto exchange: no account, no email, and no identity verification are required to swap. Funds pass through non-custodially — they are never held by GhostSwap. XMR remains part of the 1,600+ pairs supported across BTC, ETH, SOL, USDT and altcoin networks.
You send the source asset to a quoted deposit address, GhostSwap converts through aggregated liquidity from leading crypto markets at a floating rate, and the XMR lands at the receiving address you set. Median swap completion is about 8 minutes, though it varies with chain congestion. Nothing about FCMP++ requires you to change addresses, formats, or steps.
If a specific wallet you use has not yet shipped an FCMP++-compatible release, update the wallet before you swap. That is a wallet-side requirement, separate from GhostSwap.
Step-by-step: swap BTC to XMR after the upgrade
- Pick the pair — Choose BTC to XMR. You can start a BTC to XMR swap directly on the pair page, or use the swap widget on the GhostSwap homepage.
- Enter your XMR receiving address — Paste the Monero address from your wallet. Double-check it; the chain sends where you tell it.
- Set a refund address — Provide a BTC refund address in case a swap can't fill (for example, if you send below the quoted minimum).
- Send your BTC — Send the exact quoted amount to the deposit address before the quote window closes.
- Receive XMR — GhostSwap converts and sends Monero to your address. Median completion is ~8 minutes; p95 is around 30 minutes on congested chains.
The same five steps apply to other Monero directions — for example ETH to XMR, SOL to XMR, or USDT to XMR.
No-KYC XMR swap vs. a centralised exchange
| Feature | GhostSwap | Centralised exchange |
|---|---|---|
| Account / KYC | None required | Account + identity verification |
| Custody | Non-custodial pass-through | Funds held by the exchange |
| XMR support post-FCMP++ | Supported | Varies; some venues delisted XMR |
| Supported pairs | 1,600+ | Varies |
| Rate model | Floating-rate from aggregated liquidity | Order book or listed rate |
| Median completion | ~8 minutes (varies by chain) | Varies |
Among no-KYC swap services, several list Monero support — for example StealthEX, SimpleSwap, FixedFloat and SideShift each publish XMR pairs on their sites (retrieved 2026-09-05). GhostSwap sits in that group: XMR stays supported with no account required.
FAQ
Q: Does GhostSwap support Monero after FCMP++?
A: Yes. GhostSwap supports XMR swaps after the FCMP++ upgrade. The swap flow is unchanged from your side — no account, no email, no KYC. You supply a receiving address and a refund address, and funds pass through non-custodially.
Q: What does the FCMP++ upgrade actually change?
A: FCMP++ replaces Monero's ring-signature decoy system with full-chain membership proofs, so a spend is proven against all eligible outputs on the chain rather than a small fixed ring. It's a base-layer change to how transactions are built and verified. See getmonero.org (retrieved 2026-09-05).
Q: Do I need to update my wallet before swapping XMR?
A: If your Monero wallet has not shipped an FCMP++-compatible release, update it before you swap. Wallet compatibility is separate from the swap service. Once your wallet is current, the GhostSwap flow works as usual.
Q: How long does a BTC to XMR swap take?
A: Median completion is about 8 minutes, with p95 around 30 minutes depending on chain congestion. GhostSwap uses floating-rate pricing, so you receive the rate at the time your funds arrive, within the quoted spread.
Q: Do I need an account to swap Monero on GhostSwap?
A: No. There is no sign-up, no email, and no identity verification to swap. You provide a receiving address and a refund address; GhostSwap never holds your funds.
Swap Monero after FCMP++
Monero's base layer keeps changing; the way you swap it doesn't. Start a BTC to XMR swap or use the GhostSwap swap widget to convert into XMR with no account and non-custodial pass-through.
More on getting into privacy coins: how to buy crypto.
