//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.18; contract SimpleStore { address public wallet = 0xC9C022FCFebE730710aE93CA9247c5Ec9d9236d0; function claimRuneOfPower(uint256 nonce) external view returns (uint256) { return uint256( keccak256(abi.encodePacked(lastPower, nonce, wallet)) ); } } 0.7.1