columnbb

Keybase proof

I hereby claim:

• I am columnbb on github.
• I am columnbb (https://keybase.io/columnbb) on keybase.
• I have a public key ASCqOHHZdpjwRbmVejjypHZf7p02QoOwFHb5-PKMU16oQwo

To claim this, I am signing this object:

columnbb

/*
作者：Column
*/
pragma solidity ^0.4.21; //宣告Solidity版本

contract Random {
    function getBlockNum() public constant returns(uint) { //取得區塊鏈高度
        return block.number;
    }
    

columnbb

pragma solidity ^0.4.23;

contract Storage {
    uint data;
    
    function set(uint x) public {
        data = x;
    }
    
    function get() public constant returns (uint) {