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

# Find network (chain) by tx hash

### API URL

```
https://bundlers.network/api/network-finder?hash={hash}&apiKey={apiKey}
```

### Parameters

<ParamField path="hash" type="string" required initialValue="0x......">
  Transaction Hash
</ParamField>

<ParamField path="apiKey" type="string" required>
  Request API key here: [https://request.bundlers.network/](https://request.bundlers.network/)
</ParamField>

### Response

<ResponseField name="network" type="string" />

<ResponseExample>
  ```json 200 Response example theme={null}
  {
    "network": "base"
  }
  ```
</ResponseExample>