# getBlockCommitment

Returns commitment for particular block.

This method will use `30` [Compute Units](/v1/about/billing.md).

***

## **Parameters**

* `block number` integer *<mark style="color:red;">Required</mark>*. The block number identified by the slot.

## Returns

* `result` object. A custom object with the following fields:
  * `commitment`. The commitment values for the block. It could be either:
    * `null`. Null if the block is unknown.
    * `array`. An array of u64 integers logging the amount of cluster stake in lamports that has voted on the block at each depth from 0 to MAX\_LOCKOUT\_HISTORY + 1
  * `totalStake`. The total number of lamports being used by validators to participate in the block production and voting process.

```bash
// Result
{
	"jsonrpc": "2.0",
	"result": {
		"commitment": [
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			311482914814158,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			0,
			384876486517217675
		],
		"totalStake": 385365171580261965
	},
	"id": 1
}		
```

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

<pre class="language-bash"><code class="lang-bash"><strong>curl https://mainnet.solana.validationcloud.io/v1/&#x3C;YOUR_API_KEY_HERE> \
</strong>    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","id":1, "method":"getBlockCommitment","params":[319935753]}'
    
</code></pre>

{% endtab %}

{% tab title="devnet" %}

```bash
curl https://devnet.solana.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","id":1, "method":"getBlockCommitment","params":[319935753]}'
    
```

{% endtab %}
{% endtabs %}


---

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