USDCx

USDCx is a 1:1 USDC-backed stablecoin issued through Circle xReserve and native to Stacks.

Developer support for integrating USDCx bridging into applications will be available via Circle’s Bridge Kit SDK in Q1 2026.

Stacks now has a fully USDC-backed stablecoin that plugs directly into Circle’s multichain ecosystem and brings stable, interoperable dollar liquidity to Bitcoin’s leading Layer 2.

What is USDCx?

USDCx is a 1:1 USDC-backed stablecoin issued through Circle xReserve and native to Stacks. It will exist as a SIP-010 token on Stacks.

Circle's 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.

For more info on xReserve, check out the dedicated Circle docs here.