> ## 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.

# starknet_blockHashAndNumber

> Returns the block hash and number of the most recent accepted block.

### Parameters

<ParamField query="chainId" type="string" default="starknet-sepolia" 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="starknet_blockHashAndNumber" required>
  JSON-RPC method name.
</ParamField>

This method does not require any parameters.

### Returns

<ResponseField name="result" type="object">
  BlockID object containing hash and number.

  <Expandable title="properties">
    <ResponseField name="hash" type="string">
      Block hash (32 Bytes, DATA).
    </ResponseField>

    <ResponseField name="number" type="string">
      Block number (QUANTITY, 64 Bits).
    </ResponseField>
  </Expandable>
</ResponseField>

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

<ResponseExample>
  ```json Success theme={null}
  {
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
      "block_hash": "0x1ba5d3910676f8383a1c472f1092a77cbe438b108face7873e0407ceee8da1e",
      "block_number": 4504
    }
  }
  ```
</ResponseExample>