# CCTP Supported Chains and Domains

## CCTP Supported Blockchains

CCTP is available on the following blockchains, where USDC is natively issued, providing **Standard Transfer**, **Fast Transfer**, and **Hooks** capabilities.

| Blockchain (\*)             | Source (Standard transfer) | Source (Fast transfer) (\*\*) | Destination |
| --------------------------- | -------------------------: | ----------------------------: | ----------: |
| Arc Testnet                 |                          ✅ |                             ❌ |           ✅ |
| Arbitrum                    |                          ✅ |                             ✅ |           ✅ |
| Avalanche                   |                          ✅ |                             ❌ |           ✅ |
| Base                        |                          ✅ |                             ✅ |           ✅ |
| BNB Smart Chain (USYC only) |                          ✅ |                             ✅ |           ✅ |
| Codex                       |                          ✅ |                             ✅ |           ✅ |
| Ethereum                    |                          ✅ |                             ✅ |           ✅ |
| HyperEVM                    |                          ✅ |                             ❌ |           ✅ |
| Ink                         |                          ✅ |                             ✅ |           ✅ |
| Linea                       |                          ✅ |                             ✅ |           ✅ |
| Monad                       |                          ✅ |                             ❌ |           ✅ |
| OP Mainnet                  |                          ✅ |                             ✅ |           ✅ |
| Plume                       |                          ✅ |                             ✅ |           ✅ |
| Polygon PoS                 |                          ✅ |                             ❌ |           ✅ |
| Sei                         |                          ✅ |                             ❌ |           ✅ |
| Solana                      |                          ✅ |                             ✅ |           ✅ |
| Sonic                       |                          ✅ |                             ❌ |           ✅ |
| Starknet Testnet            |                          ✅ |                             ✅ |           ✅ |
| Unichain                    |                          ✅ |                             ✅ |           ✅ |
| World Chain                 |                          ✅ |                             ✅ |           ✅ |
| XDC                         |                          ✅ |                             ❌ |           ✅ |

* (\*) If a mainnet is listed, its official testnet is also supported.
* (\*\*) Fast transfer is available for source chains only when it provides a meaningful speed improvement over standard burn attestation times. For those chains, a **standard transfer** is as efficient as a **fast transfer**.

***

## CCTP Supported Domains

A **domain** is a Circle-issued identifier for a blockchain where CCTP contracts are deployed. Domains don’t map to any existing public chain ID.

Supported tokens

* [**USDC**](https://developers.circle.com/stablecoins/what-is-usdc): Supported on all CCTP domains except BNB Smart Chain
* [**USYC**](https://developers.circle.com/tokenized/usyc/overview): Supported only on Ethereum and BNB Smart Chain

| Domain | Name             |
| -----: | ---------------- |
|      0 | Ethereum         |
|      1 | Avalanche        |
|      2 | OP               |
|      3 | Arbitrum         |
|      5 | Solana           |
|      6 | Base             |
|      7 | Polygon PoS      |
|     10 | Unichain         |
|     11 | Linea            |
|     12 | Codex            |
|     13 | Sonic            |
|     14 | World Chain      |
|     15 | Monad            |
|     16 | Sei              |
|     17 | BNB Smart Chain  |
|     18 | XDC              |
|     19 | HyperEVM         |
|     21 | Ink              |
|     22 | Plume            |
|     25 | Starknet Testnet |
|     26 | Arc Testnet      |

***

References

* CCTP Supported Blockchains: <https://developers.circle.com/cctp/cctp-supported-blockchains>
* USDC: <https://developers.circle.com/stablecoins/what-is-usdc>
* USYC: <https://developers.circle.com/tokenized/usyc/overview>
* CCTP Overview: <https://developers.circle.com/cctp>
* CCTP EVM Contracts and Interfaces: <https://developers.circle.com/cctp/evm-smart-contracts>
* Migrate from CCTP V1 (Legacy) to V2: <https://developers.circle.com/cctp/migration-from-v1-to-v2>


---

# Agent Instructions: Querying This Documentation

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

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://chainaiswap.gitbook.io/chainaiswap-docs/cross-chain-transfer-protocol/cctp-supported-chains-and-domains.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.