> For the complete documentation index, see [llms.txt](https://capsign.gitbook.io/capsign/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://capsign.gitbook.io/capsign/reference/supported-networks.md).

# Supported Networks

Networks where CapSign protocol is deployed.

## Production Networks

### Base (L2)

* **Chain ID**: 8453
* **RPC**: <https://mainnet.base.org>
* **Explorer**: <https://basescan.org>
* **Native Token**: ETH
* **Status**: Primary production network

**Why Base?**

* Low transaction fees (\~$0.01)
* Fast finality (\~2 seconds)
* Ethereum security (Optimistic Rollup)
* Growing DeFi ecosystem

### Ethereum Mainnet

* **Chain ID**: 1
* **RPC**: <https://eth.llamarpc.com>
* **Explorer**: <https://etherscan.io>
* **Native Token**: ETH
* **Status**: Cross-chain operations only

## Testnets

### Base Sepolia

* **Chain ID**: 84532
* **RPC**: <https://sepolia.base.org>
* **Explorer**: <https://sepolia.basescan.org>
* **Faucet**: <https://faucet.quicknode.com/base/sepolia>
* **Status**: Primary testnet

### Ethereum Sepolia

* **Chain ID**: 11155111
* **RPC**: <https://rpc.sepolia.org>
* **Explorer**: <https://sepolia.etherscan.io>
* **Faucet**: <https://sepoliafaucet.com>
* **Status**: Cross-chain testing

## Network Configuration

### Wagmi Configuration

```typescript
import { base, baseSepolia } from "viem/chains";
import { http } from "viem";

export const config = createConfig({
  chains: [base, baseSepolia],
  transports: {
    [base.id]: http("https://mainnet.base.org"),
    [baseSepolia.id]: http("https://sepolia.base.org"),
  },
});
```

### Adding to MetaMask

**Base Mainnet**:

```
Network Name: Base
RPC URL: https://mainnet.base.org
Chain ID: 8453
Currency Symbol: ETH
Block Explorer: https://basescan.org
```

**Base Sepolia**:

```
Network Name: Base Sepolia
RPC URL: https://sepolia.base.org
Chain ID: 84532
Currency Symbol: ETH
Block Explorer: https://sepolia.basescan.org
```

## Future Networks

CapSign may expand to additional networks:

* Arbitrum
* Optimism
* Polygon
* Other EVM-compatible L2s

Check [Discord](https://discord.gg/gSmnZ9wmNv) for announcements.

## Network Status

Monitor network health:

* **Base**: [status.base.org](https://status.base.org)
* **Ethereum**: [ethstats.net](https://ethstats.net)

***

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