# Citrea launches mainnet with the Clementine BitVM bridge and a MoonPay-issued stablecoin, ctUSD

Canonical page: https://technooptimist.io/stories/citrea-launches-mainnet-with-the-clementine-bitvm-bridge-and-a-moonpay-a2cc4d1e
Date: 27 Jan 2026
About: [Citrea (Chainway Labs)](https://technooptimist.io/companies/citrea.md) · [Citrea rollup and Clementine bridge](https://technooptimist.io/crypto/citrea-mainnet.md)
Original source: https://forklog.com/en/bitcoin-based-zk-rollup-citrea-launches-mainnet/

Citrea went live as a rollup that runs transactions off Bitcoin and uses Bitcoin for settlement. BTC enters as cBTC through Clementine, built on BitVM and zero-knowledge proofs, which the team says needs only one honest party to detect and stop illegal activity.

## Key facts

- ctUSD is issued by MoonPay on M0 infrastructure and available in the US and 160 other countries.
- Live at launch: DEXs Satsuma, JuiceSwap and Fibrous, plus lending on Morpho.
- Casa co-founder Jameson Lopp called it a new experiment in creating demand for Bitcoin block space.

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