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

# bor_getAuthor

> Returns the author (validator address) of the specified block on the Polygon Bor chain.

### Parameters

<ParamField query="chainId" type="string" default="137" required>
  Unique identifier for a blockchain network.
</ParamField>

<ParamField body="id" type="number" default={1} required>
  Request identifier used to match responses.
</ParamField>

<ParamField body="jsonrpc" type="string" default="2.0" required>
  JSON-RPC version.
</ParamField>

<ParamField body="method" type="string" default="bor_getAuthor" required>
  JSON-RPC method name.
</ParamField>

<ParamField body="params" type="object" default={["0x1000"]} placeholder="[&#x22;0x1000&#x22;]" required>
  Parameters for bor\_getAuthor: \[blockNumber]

  Positional parameters for <code>bor\_getAuthor</code>:

  <ul>
    <li><code>params\[]</code>: Block number in hexadecimal format (e.g., "0x1000") or the string tag "latest".</li>
  </ul>
</ParamField>

### Returns

<ResponseField name="result" type="string">
  The address of the block author (validator). Example: <code>"0x42eefcda06ead475cde3731b8eb138e88cd0bac3"</code>.
</ResponseField>

<RequestExample>
  ```bash Curl theme={null}
  curl --request POST \
    --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=137 \
    --header 'content-type: application/json' \
    --data '{
      "id": 1,
      "jsonrpc": "2.0",
      "method": "bor_getAuthor",
      "params": [
        "0x1000"
      ]
    }'
  ```
</RequestExample>

<ResponseExample>
  ```json Success theme={null}
  {
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x42eefcda06ead475cde3731b8eb138e88cd0bac3"
  }
  ```
</ResponseExample>