---
description: >-
  Returns the number of uncles in a block from a block matching the given block
  hash.
---

# getUncleCountByBlockHash

### REQUEST

```
POST https://mainnet-slice-rpc.com
```

#### HEADERS

```
Content-Type: application/json
```

#### REQUEST PARAMS

* `BLOCK HASH` _\[required]_ - a string representing the hash (32 bytes) of a block

#### EXAMPLE

```
## JSON-RPC over HTTPS POST
curl https://mainnet-slice-rpc.com \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params": ["0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35"],"id":1}'

## JSON-RPC over WSS
wscat -c ws://mainnet-slice-rpc.com
>{"jsonrpc":"2.0","method":"eth_getUncleCountByBlockHash","params": ["0xb3b20624f8f0f86eb50dd04688409e5cea4bd02d700bf6e79e9384d47d6a5a35"],"id":1}
```

### RESPONSE

#### RESULT FIELDS

* `BLOCK TRANSACTION COUNT` - a hex code of the integer representing the number of uncles in the provided block

#### BODY

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