RaceToken

race_token.sol

pragma solidity >=0.7.0 <0.9.0;

contract RaceToken {

    string _name = "Race Token";
    string _symbol = "RCT";
    address deployer;

    mapping(address => uint) balances;
    mapping(uint => bool) blockMined;
    mapping(address => mapping(address => uint)) allowances;

    uint totalMinted = 1000000 * 1e8;

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    constructor(){
        deployer = msg.sender;
        balances[deployer]=1000000 * 1e8;
    }
    
    function name() public view returns (string memory){
        return _name;
    }
    
    function symbol() public view returns (string memory) {
        return _symbol;
    }
    
    function decimals() public pure returns (uint8) {
        return 8;
    }
    
    function totalSupply() public pure returns (uint256) {
        return 10000000 * 1e8;
    }
    
    function balanceOf(address _owner) public view returns (uint256 balance) {
        return balances[_owner];
    }
    
    function transfer(address _to, uint256 _value) public returns (bool success) {
        assert(balances[msg.sender]>=_value);
        balances[msg.sender]-=_value;
        balances[_to]+=_value;

        emit Transfer(msg.sender, _to, _value);

        return true;
    }
    
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
        if(balances[_from]<_value){
            return false;
        }

        if(allowances[_from][msg.sender]<_value){
            return false;
        }

        balances[_from] -= _value;
        balances[_to] += _value;
        allowances[_from][msg.sender]-=_value;
        emit Transfer(_from, _to, _value);

        return true;
    }
    
    
    function approve(address _spender, uint256 _value) public returns (bool success) {
        allowances[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
    }
    
    function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
        return allowances[_owner][_spender];
    }

    function mine() public returns(bool success){
        if(blockMined[block.number]){
            return false;
        }

        if(block.number % 10 != 0 ){
            return false;
        }

        balances[msg.sender] = balances[msg.sender] + 10*1e8;
        totalMinted = totalMinted + 10*1e8;
        blockMined[block.number]=true;
        return true;
    }

    function getCurrentBlock() public view returns(uint){
        return block.number;
    }

    function isMined(uint blockNumber) public view returns(bool){
        return blockMined[blockNumber];
    }  

    //0x980f400ed012a683930b4a61ac22bce1c70041e1
}