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contracts...espledger.sol

pragma solidity ^0.8.0;


contract espledger {


    mapping (address => uint256) public balanceDebit;
    mapping (address => uint256) public balanceCredit;

    uint256 public totalSupply = 0;
    address public owner;
    address public secondOwner;
    event Transfer(address indexed from, address indexed to, uint256 value);

    modifier _ownerOnly() {
        require((msg.sender == owner) || (msg.sender == secondOwner));
         _;
    }

    constructor(address _owner)  {
      owner = msg.sender;
      secondOwner = _owner;
    }

    function transfer(address from,address to, uint256 value) public _ownerOnly  returns (bool success) {  
        balanceCredit[from] += value;          
        balanceDebit[to] += value;           
        totalSupply += value;     
        emit Transfer(from, to, value);
        return true;
    }
    // more stuff to come
}