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

# Networks & Tokens

Onboard Exchange operates in a non-custodial manner, powered by smart contracts. This approach prioritizes security and user control over their funds.

While the [underlying protocol](https://nestcoin.mintlify.site/protocol-concepts/scea-overview.md) is compatible across all EVM chains, Onboard Exchange itself currently supports selected networks, to ensure robust liquidity and a smooth user experience. However, we're constantly evaluating and adding new networks to Exchange, so stay tuned for updates as we expand our network coverage!

Below is a list of supported networks & tokens on mainnet, as well as testnet, allowing you to test your integration before deployment.

## Mainnet Chains

| Chain name | Chain ID | Onboard network ID | Supported Tokens |
| - | - | - | - |
| **Base Mainnet** | 8543 | `base` | `ETH`, `USDC`, `DAI` |
| **BNB Smart Chain Mainnet** | 56 | `bsc` | `BNB`, `USDT`, `USDC`, `DAI` |
| **OP Mainnet** | 10 | `optimism` | `ETH`, `USDC`, `DAI`, `WLD` |

Support for Polygon & Arbitrum on mainnet is due in November 2024.

## Testnet Chains

| Chain name | Chain ID | Onboard network ID | Supported Tokens |
| - | - | - | - |
| **Base Sepolia Testnet** | 85432 | `base_sepolia` | `ETH`, `USDC (0x036cbd53842c5426634e7929541ec2318f3dcf7e)`, `PZZP (0xc67a955e09d0779cea5bf19d59547b07c0df4b11)` |
| **BNB Smart Chain Testnet** | 97 | `bsc_testnet` | `BNB`, `USDT (0x13e42c4A865B3cB4aec022C80c5Fd944F3962573)`, `DAI` |
| **Polygon Amoy Testnet** | 80002 | `polygon_amoy` | `MATIC`, `USDT (0x1fa133a391e5f47b687f3b48144ac5516fce3922)` |
| **Optimism Sepolia Testnet** | 11155420 | `opt_sepolia` | `ETH`, `USDC`, `DAI`, `WLD` |


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.