> ## Documentation Index
> Fetch the complete documentation index at: https://developers.circle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment smart contract addresses

> Payment smart contract addresses for CPN

The following sections provide the addresses for the CPN payment smart contracts
on supported blockchains.

## Mainnet

| Blockchain  | Settlement Contract Address                                                                                                |
| ----------- | -------------------------------------------------------------------------------------------------------------------------- |
| Ethereum    | [`0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868`](https://etherscan.io/address/0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868)    |
| Polygon PoS | [`0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868`](https://polygonscan.com/address/0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868) |

## Testnet

| Blockchain       | Settlement Contract Address                                                                                                     |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| Arc Testnet      | [`0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868`](https://testnet.arcscan.app/address/0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868)  |
| Ethereum Sepolia | [`0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868`](https://sepolia.etherscan.io/address/0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868) |
| Polygon PoS Amoy | [`0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868`](https://amoy.polygonscan.com/address/0x355e0a2a4B7563e0E00C90deD9Aa914c119Ee868) |