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

# GetLatestBlockhash

## getLatestBlockhash RPC Method

Returns the latest blockhash.

#### Version Restriction

This method is only available in `solana-core` v1.9 or newer. Please use getRecentBlockhash for `solana-core` v1.8 and below.

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  <div className="col-span-1">
    #### Parameters

    `object` **optional**\
    Configuration object containing the following fields:

    **commitment** `string` **optional**\
    The level of commitment desired when querying state

    **minContextSlot** `number` **optional**\
    The minimum slot that the request can be evaluated at
  </div>

  <div className="col-span-1">
    #### Code Sample

    ```bash theme={"system"}
    curl https://rpc.testnet.soo.network/rpc \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{
      "jsonrpc": "2.0",
      "id": 1,
      "method": "getLatestBlockhash",
      "params": [{
        "commitment": "finalized",
        "minContextSlot": 0
      }]
    }'
    ```

    #### Response

    ```json theme={"system"}
    {
      "jsonrpc": "2.0",
      "result": {
        "context": {
          "slot": 369624
        },
        "value": {
          "blockhash": "5ThJTCxpdn54bk3gBAWKZS4K9ogHEX56WooYbXQDnm3Q",
          "lastValidBlockHeight": 369624
        }
      },
      "id": 1
    }
    ```
  </div>
</div>

#### Result Details

The result is a JSON object with `context` and `value` fields:

* `value` contains:
  * `blockhash: <string>`
    * Latest blockhash as a base-58 encoded string
    * Used to identify and verify the current state of the blockchain

  * `lastValidBlockHeight: <u64>`
    * The last block height at which the blockhash will be valid
    * Defines the expiration point for transactions using this blockhash