Contracts

The USDCx smart contract is deployed on Stacks. It's role mirrors native USDC behavior and verifies Circle’s deposit attestations for minting and emits burn events for redemption.

Below are the integral contracts that make up the USDCx architecture.

Stacks

Network	USDCx token contract	USDC xReserve protocol (entrypoint)
Mainnet	SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx	SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx-v1
Testnet	ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx	ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx-v1

Ethereum

Network	USDC token contract	xReserve contract
Mainnet	0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48	0x8888888199b2Df864bf678259607d6D5EBb4e3Ce
Testnet	0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238	0x008888878f94C0d87defdf0B07f46B93C1934442