> For the complete documentation index, see [llms.txt](https://docs.t-rex.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.t-rex.network/developers/networks.md).

# Networks

***

This page lists the T-REX network environments and everything you need to point a wallet or developer tooling at them.

The current live environment is **InGen**, the public testnet of the **T-REX Ledger**, the reference chain and golden source of T-REX Network. Mainnet endpoints will be published here once available.

> ⚠️ **InGen is a test network.** TREX on InGen is a test token with no monetary value, and network state may be reset at any time. Do not use it for production assets or data you cannot afford to lose.

### InGen testnet

InGen is a Polygon CDK chain running the OP Stack execution client (op-geth), connected to the AggLayer. It is public and permissionless, with a \~1 second block time. It settles to Ethereum sepolia and interoperates with other ecosystems through the AggLayer.

#### Connection details

| Parameter         | Value                                                |
| ----------------- | ---------------------------------------------------- |
| Network name      | T-REX InGen Testnet                                  |
| RPC URL           | `https://rpc.ingen.t-rex.network`                    |
| Chain ID          | `364301` (`0x58F0D`)                                 |
| Currency symbol   | `TREX`                                               |
| Currency decimals | `18`                                                 |
| Block explorer    | `https://explorer.ingen.t-rex.network/`              |
| Block time        | \~1 second                                           |
| Stack             | Polygon CDK + OP Stack (op-geth), AggLayer-connected |
| Access            | Public, permissionless                               |

#### Add InGen to your wallet

**Manually (MetaMask and most EVM wallets):** open the network selector, choose *Add a custom network*, and enter the values from the table above.

**Programmatically** via [EIP-3085](https://eips.ethereum.org/EIPS/eip-3085):

```js
await window.ethereum.request({
  method: 'wallet_addEthereumChain',
  params: [{
    chainId: '0x58F0D', // 364301
    chainName: 'T-REX InGen Testnet',
    nativeCurrency: { name: 'TREX', symbol: 'TREX', decimals: 18 },
    rpcUrls: ['https://rpc.ingen.t-rex.network'],
    blockExplorerUrls: ['https://explorer.ingen.t-rex.network'],
  }],
});
```

#### Connect with developer tooling

**viem**

```ts
import { defineChain } from 'viem';

export const ingen = defineChain({
  id: 364301,
  name: 'T-REX InGen Testnet',
  nativeCurrency: { name: 'TREX', symbol: 'TREX', decimals: 18 },
  rpcUrls: {
    default: { http: ['https://rpc.ingen.t-rex.network'] },
  },
  blockExplorers: {
    default: {
      name: 'InGen Explorer',
      url: 'https://explorer.ingen.t-rex.network',
    },
  },
  testnet: true,
});
```

**ethers**

```ts
import { JsonRpcProvider } from 'ethers';

const provider = new JsonRpcProvider('https://rpc.ingen.t-rex.network', {
  chainId: 364301,
  name: 't-rex-ingen',
});
```

**Hardhat**

```ts
// hardhat.config.ts
networks: {
  ingen: {
    url: 'https://rpc.ingen.t-rex.network',
    chainId: 364301,
    // accounts: [process.env.PRIVATE_KEY!],
  },
},
```

**Foundry**

```toml
# foundry.toml
[rpc_endpoints]
ingen = "https://rpc.ingen.t-rex.network"
```

```bash
cast block-number --rpc-url https://rpc.ingen.t-rex.network
forge script script/Deploy.s.sol --rpc-url ingen --broadcast
```

#### Block explorer

Browse blocks, transactions, addresses and verified contracts at [explorer.ingen.t-rex.network](https://explorer.ingen.t-rex.network/).

#### Test TREX

You need test TREX to pay for gas on InGen. Get it from the faucet at [faucet-ingen.t-rex.network](https://faucet-ingen.t-rex.network/).

The faucet dispenses **0.1 TREX per request, once every hour** per address.


---

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