Returns the current client version.
curl https://node1-mainnet.maalscan.io -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":1}'
Returns Keccak-256 (not the standardized SHA3-256) of the given data.
curl https://node1-mainnet.maalscan.io -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"web3_sha3","params":["0x68656c6c6f20776f726c64"],"id":1}'