# Web3

### web3\_clientVersion[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#web3_clientversion) <a href="#web3_clientversion" id="web3_clientversion"></a>

Returns the current client version.

#### Parameters[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#parameters) <a href="#parameters" id="parameters"></a>

None

#### Returns[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#returns) <a href="#returns" id="returns"></a>

* String - The current client version

#### Example[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#example) <a href="#example" id="example"></a>

```
curl  https://node1-mainnet.maalscan.io -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":1}'
```

### web3\_sha3[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#web3_sha3) <a href="#web3_sha3" id="web3_sha3"></a>

Returns Keccak-256 (not the standardized SHA3-256) of the given data.

#### Parameters[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#parameters-1) <a href="#parameters-1" id="parameters-1"></a>

* DATA - the data to convert into a SHA3 hash

#### Returns[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#returns-1) <a href="#returns-1" id="returns-1"></a>

* DATA - The SHA3 result of the given string.

#### Example[​](https://wiki.polygon.technology/docs/supernets/api/json-rpc-web3/#example-1) <a href="#example-1" id="example-1"></a>

```
curl  https://node1-mainnet.maalscan.io -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"web3_sha3","params":["0x68656c6c6f20776f726c64"],"id":1}'
```