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

# Supported Blockchains and Fiat Rails

> Details about the rails and currencies supported today.

When utilizing blockchain payments, it's critical to keep the following in mind:

<Danger>
  Funds sent to **unsupported asset/blockchain pairs** or to **incorrect addresses** may be **irretrievable and permanently lost**.
</Danger>

<Danger>
  Make sure that you are sending amounts above the transaction minimum. Refer to the below table for supported payment routes and transaction minimums.
</Danger>

<Warning>
  USDB is not supported for users in the EEA due to regulatory restrictions
</Warning>

## Supported Rails & Currencies

| Rail          | Currency                                                |
| ------------- | ------------------------------------------------------- |
| `ach_wire`    | Settlement currency must be set to **USD**              |
| `iban`        | Settlement currency must be set to **EUR**              |
| `swift`       | Settlement currency must be set to **USD**              |
| `clabe`       | Settlement currency must be set to **MXN**              |
| `pix_key`     | Settlement currency must be set to **BRL**              |
| `pix_br_code` | Settlement currency must be set to **BRL**              |
| `fps`         | Settlement currency must be set to **GBP**              |
| `bre_b`       | Settlement currency must be set to **COP**              |
| `solana`      | Settlement currency must be set to **USDC** or **USDB** |
| `base`        | Settlement currency must be set to **USDC** or **USDB** |
| `ethereum`    | Settlement currency must be set to **USDC** or **USDB** |

<Info>
  Additional blockchains and currencies available upon request. Please reach out to your Technical Account Manager for more details.
</Info>

## **Transaction minimums**

Transactions below the required transaction minimum will not be credited or returned. This is standard practice, as the cost of returning such small amounts often exceeds their value.

### **Inbound (Fiat to Stablecoin)**

| Rail                  | Currency | Minimum |
| :-------------------- | :------- | :------ |
| ACH                   | USD      | 1 USD   |
| Wire                  | USD      | 1 USD   |
| SWIFT                 | USD      | 1 USD   |
| IBAN                  | EUR      | 1 EUR   |
| CLABE                 | MXN      | 50 MXN  |
| Pix Key / Pix BR Code | BRL      | 10 BRL  |
| FPS                   | GBP      | 2 GBP   |
| Bre-B                 | COP      | 100 COP |

### **Outbound (Stablecoin to Fiat)**

| Stablecoin | Destination Rail | Destination Currency | Minimum |
| :--------- | :--------------- | :------------------- | :------ |
| USDC       | ACH / Wire       | USD                  | 1 USDC  |
| USDB       | ACH / Wire       | USD                  | 1 USDB  |
| USDC       | CLABE            | MXN                  | 1 USDC  |
| USDC       | Pix              | BRL                  | 2 USDC  |
| USDC       | FPS              | GBP                  | 3 USDC  |
| USDC       | Bre-B            | COP                  | 1 USDC  |