> ## Documentation Index
> Fetch the complete documentation index at: https://www.dynamic.xyz/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported chains

> The chains a payer can pay from in Flow payments, per payment source, and the supported testnet.

Which chains a payer can pay from depends on the [payment source](https://www.dynamic.xyz/docs/flow/payment-sources.md) they choose.

## Source chains

| Source | Chains |
| - | - |
| Wallet | EVM, Solana, Bitcoin, Sui, TRON |
| Exchange | The payer pays on the exchange. The exchange delivers the settlement token on chain |
| Deposit address | EVM, Solana, Bitcoin, TRON |

Settlement is what you configure per flow, so a payer on one chain can pay a merchant settling on another. An exchange payment requires a settlement token and network that the exchange supports, as described in [Payment sources](https://www.dynamic.xyz/docs/flow/payment-sources.md#exchange).

## Testnets

Base Sepolia is the supported testnet. Use these values when you create a test flow and when the payer attaches a source and requests a quote:

| Chain | `chainId` | ETH | WETH | USDC |
| :- | :- | :- | :- | :- |
| Base Sepolia | `"84532"` | `0x0000000000000000000000000000000000000000` | `0x4200000000000000000000000000000000000006` | `0x036CbD53842c5426634e7929541eC2318f3dCF7e` |

Base Sepolia uses `chainName: "EVM"`. The [API guide](https://www.dynamic.xyz/docs/flow/api.md#testnets) shows where each field goes.

## Next

> [card] [Settlements](https://www.dynamic.xyz/docs/flow/settlements.md)
>
> What you receive, on which chain, and where it lands.

> [card] [Payment sources](https://www.dynamic.xyz/docs/flow/payment-sources.md)
>
> The three ways a payer can pay, and which to offer.


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