USDCx is a 1:1 USDC-backed stablecoin issued through Circle xReserve and native to Stacks. xReserve provides cryptographic attestations for deposits and minting, while Circle Gateway and CCTP handle cross-chain movement. The result is USDC on Stacks without third-party bridges, wrapped assets, or fragmented liquidity. USDCx works everywhere USDC works, from Ethereum to Solana and beyond, all while settling on Bitcoin through Stacks.