> ## Documentation Index
> Fetch the complete documentation index at: https://litprotocol-feature-jss-124-docs-update-docs-to-include-htt.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Chain Config

### Chronicle Yellowstone - Lit Protocol Testnet

| Property | Value                                      |
| -------- | ------------------------------------------ |
| ChainID  | 175188 (0x2ac54)                           |
| Currency | tstLPX                                     |
| RPC URL  | `https://yellowstone-rpc.litprotocol.com/` |

Also see [Chainlist](https://chainlist.org/chain/175188) for more details.

### Viem Chain Config for the Chronicle Yellowstone network

```ts theme={null}
import { Chain, http } from "viem";

export const viemChainConfig: Readonly<Chain> = Object.freeze({
  id: 175188,
  name: "Chronicle Yellowstone",
  nativeCurrency: {
    name: "Chronicle Yellowstone",
    symbol: "tstLPX",
    decimals: 18,
  },
  rpcUrls: {
    default: {
      http: ["https://yellowstone-rpc.litprotocol.com/"],
    },
    public: {
      http: ["https://yellowstone-rpc.litprotocol.com/"],
    },
  },
  blockExplorers: {
    default: {
      name: "Yellowstone Explorer",
      url: "https://yellowstone-explorer.litprotocol.com/",
    },
  },
});
```

Alternatively, we also provide a helper function to get the viem chain config. You can use

```ts theme={null}
litClient.getChainConfig().viemConfig
```

to get the viem chain config. See [Lit Client Reference](/sdk/sdk-reference/lit-client/functions/createLitClient#getchainconfig) for more details.