> For the complete documentation index, see [llms.txt](https://docs.stacks.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stacks.co/learn/zh/bridging/usdcx/contracts.md).

# 合约

USDCx 智能合约部署在 Stacks 上。它的角色与原生 USDC 的行为相同，并验证 Circle 的存款证明以进行铸造，同时发出销毁事件以便赎回。

下面是构成 USDCx 架构的核心合约。

### Stacks

<table><thead><tr><th width="125.3046875">网络</th><th>USDCx 代币合约</th><th>USDC xReserve 协议（入口点）</th></tr></thead><tbody><tr><td>主网</td><td><a href="https://explorer.hiro.so/txid/0x07ea0a8d7262acd0cb094006969527351883281e08ebb6535843c5dbbde31ce9?chain=mainnet">SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx</a></td><td><a href="https://explorer.hiro.so/txid/0xb5f29114ecdbaf199887433cdd4ca46d177d60875141e1dfb67304b53bf2df11?chain=mainnet">SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx-v1</a></td></tr><tr><td>测试网</td><td><a href="https://explorer.hiro.so/txid/ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx?chain=testnet">ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx</a></td><td><a href="https://explorer.hiro.so/txid/ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx-v1?chain=testnet">ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM.usdcx-v1</a></td></tr></tbody></table>

### 以太坊

<table><thead><tr><th width="103.1875">网络</th><th>USDC 代币合约</th><th>xReserve 合约</th></tr></thead><tbody><tr><td>主网</td><td><a href="https://etherscan.io/token/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48">0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48</a></td><td><a href="https://etherscan.io/address/0x8888888199b2Df864bf678259607d6D5EBb4e3Ce">0x8888888199b2Df864bf678259607d6D5EBb4e3Ce</a></td></tr><tr><td>测试网</td><td><a href="https://sepolia.etherscan.io/token/0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238">0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238</a></td><td><a href="https://sepolia.etherscan.io/address/0x008888878f94C0d87defdf0B07f46B93C1934442">0x008888878f94C0d87defdf0B07f46B93C1934442</a></td></tr></tbody></table>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.stacks.co/learn/zh/bridging/usdcx/contracts.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
