# getBlockHash

**Usage**: `await client.core.getBlockHash(height, options)`  
**Description**: Allow to fetch a specific block hash from  its height

Parameters:

| parameters  | type              | required | Description          |
| ----------- | ----------------- | -------- | -------------------- |
| **height**  | Number            | yes      | A valid block height |
| **options** | DAPIClientOptions | no       |                      |

Returns : {Promise\<null|string>} - the corresponding block hash