# eth\_getUncleCountByBlockHash - Ethereum

## How to Use the eth\_getUncleCountByBlockHash Method

### **Parameters**

DATA, 32 Bytes - a chosen block’s hash. params:

```
[
 '0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35'
]
```

### **What you receive**

QUANTITY - the number of uncles in the given block presented as an integer.

### Sample

Here is a typical appliance example.

#### Call

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

```bash
curl https://eth-mainnet.rpcfast.com/?api_key=<key> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35"],"id":0}'

```

{% endtab %}
{% endtabs %}

#### Outcome

```json
{
  "jsonrpc": "2.0",
  "id": 0,
  "result": "0x1"
}
```