# isBlockhashValid

Returns whether a blockhash is still valid or not

#### Parameters required for this RPC call

* The blockhash of the block to evaluate, as base-58 encoded string.
* **configuration** : This contains the following parameters, all are optional fields.
  * **commitment**: The commitment describes how finalized a block is at that point in time. Commitment levels <mark style="color:yellow;">processed</mark>, <mark style="color:yellow;">confirmed</mark> and <mark style="color:yellow;">finalized</mark> are supported, defaults to <mark style="color:yellow;">finalized</mark>.
  * **minContextSlot**: The minimum slot that the request can be evaluated at.

{% tabs %}
{% tab title="cURL" %}

<pre class="language-bash"><code class="lang-bash">curl https://rpc.shyft.to?api_key=YOUR-API-KEY -s -X \
<strong>  POST -H "Content-Type: application/json" -d ' 
</strong>   {
     "jsonrpc": "2.0",
     "id": 1,
     "method": "getVersion"
   }
 '
</code></pre>

{% endtab %}

{% tab title="Web3.js" %}

```javascript
import { Connection, PublicKey, clusterApiUrl } from "@solana/web3.js";

const connection = new Connection("https://rpc.shyft.to?api_key=YOUR-API-KEY", "confirmed");
let version = await connection.getVersion();

console.log(version);
```

{% endtab %}

{% tab title="Response" %}

```json
{
  "jsonrpc": "2.0",
  "result": {
    "solana-core": "1.16.7",
    "feature-set": 2891131721
  },
  "id": 1
}
```

{% endtab %}
{% endtabs %}