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Contract Source Code Verified (Exact Match)
Contract Name: BLINKToken
Compiler Version: v0.5.3+commit.10d17f24
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity 0.5.3;


contract BLINKToken {
    // Override due to ERC20 specification requirement
    // solhint-disable-next-line const-name-snakecase
    uint8 public constant decimals = 18;

    // Override due to ERC20 specification requirement
    // solhint-disable-next-line const-name-snakecase
    string public constant name = "BLOCKMASON LINK TOKEN";

    // Override due to ERC20 specification requirement
    // solhint-disable-next-line const-name-snakecase
    string public constant symbol = "BLINK";

    bool public mintingFinished = false;
    address public owner;
    uint256 public totalSupply;

    mapping (address => mapping (address => uint256)) private allowed;
    mapping (address => uint256) private balances;

    event Approval(address indexed tokenholder, address indexed spender, uint256 value);
    event Mint(address indexed to, uint256 amount);
    event MintFinished();
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    event Transfer(address indexed from, address indexed to, uint256 value);

    constructor() public {
        owner = msg.sender;
    }

    function () external payable {
        revert();
    }

    function allowance(address _tokenholder, address _spender) public view returns (uint256 remaining) {
        return allowed[_tokenholder][_spender];
    }

    function approve(address _spender, uint256 _value) public returns (bool) {
        require(_spender != address(0));
        require(_spender != msg.sender);

        allowed[msg.sender][_spender] = _value;

        emit Approval(msg.sender, _spender, _value);

        return true;
    }

    function balanceOf(address _tokenholder) public view returns (uint256 balance) {
        return balances[_tokenholder];
    }

    function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool success) {
        require(_spender != address(0));
        require(_spender != msg.sender);

        if (allowed[msg.sender][_spender] <= _subtractedValue) {
            allowed[msg.sender][_spender] = 0;
        } else {
            allowed[msg.sender][_spender] = allowed[msg.sender][_spender] - _subtractedValue;
        }

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    function finishMinting() public returns (bool) {
        require(msg.sender == owner);
        require(!mintingFinished);

        mintingFinished = true;

        emit MintFinished();

        return true;
    }

    function increaseApproval(address _spender, uint _addedValue) public returns (bool success) {
        require(_spender != address(0));
        require(_spender != msg.sender);
        require(allowed[msg.sender][_spender] <= allowed[msg.sender][_spender] + _addedValue);

        allowed[msg.sender][_spender] = allowed[msg.sender][_spender] + _addedValue;

        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);

        return true;
    }

    // Override for consistency with #transfer()
    // solhint-disable-next-line no-simple-event-func-name
    function mint(address _to, uint256 _amount) public returns (bool) {
        require(msg.sender == owner);
        require(!mintingFinished);
        require(_to != address(0));
        require(_to != address(this));
        require(totalSupply <= totalSupply + _amount);
        require(balances[_to] <= balances[_to] + _amount);

        totalSupply = totalSupply + _amount;
        balances[_to] = balances[_to] + _amount;

        emit Mint(_to, _amount);
        emit Transfer(address(0), _to, _amount);

        return true;
    }

    // Override due to ERC20 specification requirement
    // solhint-disable-next-line no-simple-event-func-name
    function transfer(address _to, uint256 _value) public returns (bool) {
        require(_to != msg.sender);
        require(_to != address(0));
        require(_to != address(this));
        require(balances[msg.sender] - _value <= balances[msg.sender]);
        require(balances[_to] <= balances[_to] + _value);
        require(_value <= transferableTokens(msg.sender));

        balances[msg.sender] = balances[msg.sender] - _value;
        balances[_to] = balances[_to] + _value;

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

        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_from != address(0));
        require(_from != address(this));
        require(_to != _from);
        require(_to != address(0));
        require(_to != address(this));
        require(_value <= transferableTokens(_from));
        require(allowed[_from][msg.sender] - _value <= allowed[_from][msg.sender]);
        require(balances[_from] - _value <= balances[_from]);
        require(balances[_to] <= balances[_to] + _value);

        allowed[_from][msg.sender] = allowed[_from][msg.sender] - _value;
        balances[_from] = balances[_from] - _value;
        balances[_to] = balances[_to] + _value;

        emit Transfer(_from, _to, _value);

        return true;
    }

    function transferOwnership(address _newOwner) public {
        require(msg.sender == owner);
        require(_newOwner != address(0));
        require(_newOwner != address(this));
        require(_newOwner != owner);

        address previousOwner = owner;
        owner = _newOwner;

        emit OwnershipTransferred(previousOwner, _newOwner);
    }

    function transferableTokens(address holder) public view returns (uint256) {
        if (mintingFinished) {
            return balanceOf(holder);
        }
        return 0;
    }
}

    Contract ABI  
[{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_tokenholder","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"holder","type":"address"}],"name":"transferableTokens","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_tokenholder","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"tokenholder","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]

  Contract Creation Code Switch To Opcodes View
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   Swarm Source:
bzzr://2312725fa10a889834e82d52d18a50d6bc96ad0dfd397ade5b7254f0b8882554

 

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