> ## 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.

# header.LocalHead

> Returns the ExtendedHeader of the chain head.

### Parameters

<ParamField query="chainId" type="string" default="celestiabridge-mocha" 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="header.LocalHead" required>
  JSON-RPC method name.
</ParamField>

<ParamField body="params" type="object" default={[null]} placeholder="[null]" />

### Returns

<ResponseField name="result" type="object">
  The JSON-RPC result.

  <Expandable title="properties">
    <ResponseField name="header" type="object" />

    <ResponseField name="validator_set" type="object" />

    <ResponseField name="commit" type="object" />

    <ResponseField name="dah" type="object">
      <Expandable title="properties">
        <ResponseField name="row_roots" type="array">
          <Expandable title="items">
            <ResponseField name="items[]" type="string" />
          </Expandable>
        </ResponseField>

        <ResponseField name="column_roots" type="array">
          <Expandable title="items">
            <ResponseField name="items[]" type="string" />
          </Expandable>
        </ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

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

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