# eth\_getUncleCountByBlockHash

### Parameters

* `DATA`, 32 Bytes - hash of a block.

```javascript
params: [
 '0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238'
]
```

### Returns

`QUANTITY` - integer of the number of uncles in this block.

### Example

Request

```
curl https://rpc-mainnet.u2u.xyz \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params":["0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238"],"id":0}'
```

Result

```javascript
{
  "id":0,
  "jsonrpc": "2.0",
  "result": "0x1" // 1
}
```