Token

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

library SafeMath    - function mul(uint256 _a, uint256 _b)    - function div(uint256 _a, uint256 _b)    - function sub(uint256 _a, uint256 _b)    - function add(uint256 _a, uint256 _b)  contract ERC20    - function totalSupply()    - function balanceOf(address _who)    - function allowance(address _owner, ad ...    - function transfer(address _to, uint25 ...    - function approve(address _spender, ui ...    - function transferFrom(address _from, ...  contract TrueDeckToken is ERC20 *    - function totalSupply()    - function transfer(address _to, uint25 ...    - function transferFrom(address _from, ...    - function approve(address _spender, ui ...    - function allowance(address _owner, ad ...    - function increaseApproval(address _sp ...    - function decreaseApproval(address _sp ...    - function balanceOf(address _owner)

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-09-04
*/

pragma solidity 0.4.23;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {


    /**
    * @dev Multiplies two numbers, reverts on overflow.
    */
    function mul(uint256 _a, uint256 _b) internal pure returns (uint256) {
        if (_a == 0) {
            return 0;
        }
        uint256 c = _a * _b;
        require(c / _a == _b);

        return c;
    }

    /**
    * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
    */
    function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
        require(_b > 0); // Solidity only automatically asserts when dividing by 0
        uint256 c = _a / _b;
        // assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold

        return c;
    }

    /**
    * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
    */
    function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
        require(_b <= _a);
        uint256 c = _a - _b;

        return c;
    }

    /**
    * @dev Adds two numbers, throws on overflow.
    */
    function add(uint256 _a, uint256 _b) internal pure returns (uint256) {
        uint256 c = _a + _b;
        require(c >= _a);

        return c;
    }
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 {
    function totalSupply() public view returns (uint256);

    function balanceOf(address _who) public view returns (uint256);

    function allowance(address _owner, address _spender)
        public view returns (uint256);

    function transfer(address _to, uint256 _value) public returns (bool);

    function approve(address _spender, uint256 _value)
        public returns (bool);

    function transferFrom(address _from, address _to, uint256 _value)
        public returns (bool);

    event Transfer(
        address indexed from,
        address indexed to,
        uint256 value
    );

    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

/**
 * @title TrueDeck TDP Token
 * @dev ERC20 Token for TrueDeck Platform
 */
contract TrueDeckToken is ERC20 {
    using SafeMath for uint256;

    string public constant name = "TrueDeck";
    string public constant symbol = "TDP";
    uint8 public constant decimals = 18;

    mapping (address => uint256) private balances_;

    mapping (address => mapping (address => uint256)) private allowed_;

    uint256 private totalSupply_;

    /**
    * @dev Initial supply of TDP tokens.
    *      200M TDP Tokens
    */
    uint256 public INITIAL_SUPPLY = 200000000 * 10 ** uint256(decimals);

    constructor() public {
        balances_[msg.sender] = INITIAL_SUPPLY;
        totalSupply_ = INITIAL_SUPPLY;
    }

    /**
    * @dev total number of tokens in existence
    */
    function totalSupply() public view returns (uint256) {
        return totalSupply_;
    }

    /**
    * @dev Transfer the specified amount of tokens to the specified address.
    *      This function works the same with the previous one
    *      but doesn't contain `_data` param.
    *      Added due to backwards compatibility reasons.
    * @param _to The address to transfer to.
    * @param _value The amount to be transferred.
    */
    function transfer(address _to, uint256 _value) public returns (bool) {
        require(_value <= balances_[msg.sender]);
        require(_to != address(0));

        balances_[msg.sender] = balances_[msg.sender].sub(_value);
        balances_[_to] = balances_[_to].add(_value);
        emit Transfer(msg.sender, _to, _value);

        return true;
    }


    /**
     * @dev Transfer tokens from one address to another
     * @param _from address The address which you want to send tokens from
     * @param _to address The address which you want to transfer to
     * @param _value uint256 the amount of tokens to be transferred
     */
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_value <= balances_[_from]);
        require(_value <= allowed_[_from][msg.sender]);
        require(_to != address(0));

        balances_[_from] = balances_[_from].sub(_value);
        balances_[_to] = balances_[_to].add(_value);
        allowed_[_from][msg.sender] = allowed_[_from][msg.sender].sub(_value);
        emit Transfer(_from, _to, _value);

        return true;
    }

    /**
     * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
     *
     * Beware that changing an allowance with this method brings the risk that someone may use both the old
     * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
     * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     * @param _spender The address which will spend the funds.
     * @param _value The amount of tokens to be spent.
     */
    function approve(address _spender, uint256 _value) public returns (bool) {
        allowed_[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    /**
     * @dev Function to check the amount of tokens that an owner allowed to a spender.
     * @param _owner address The address which owns the funds.
     * @param _spender address The address which will spend the funds.
     * @return A uint256 specifying the amount of tokens still available for the spender.
     */
    function allowance(address _owner, address _spender) public view returns (uint256) {
        return allowed_[_owner][_spender];
    }

    /**
     * @dev Increase the amount of tokens that an owner allowed to a spender.
     *
     * approve should be called when allowed_[_spender] == 0. To increment
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * @param _spender The address which will spend the funds.
     * @param _addedValue The amount of tokens to increase the allowance by.
     */
    function increaseApproval(address _spender, uint256 _addedValue) public returns (bool) {
        allowed_[msg.sender][_spender] = (allowed_[msg.sender][_spender].add(_addedValue));
        emit Approval(msg.sender, _spender, allowed_[msg.sender][_spender]);
        return true;
    }

    /**
     * @dev Decrease the amount of tokens that an owner allowed to a spender.
     *
     * approve should be called when allowed_[_spender] == 0. To decrement
     * allowed value is better to use this function to avoid 2 calls (and wait until
     * the first transaction is mined)
     * From MonolithDAO Token.sol
     * @param _spender The address which will spend the funds.
     * @param _subtractedValue The amount of tokens to decrease the allowance by.
     */
    function decreaseApproval(address _spender, uint256 _subtractedValue) public returns (bool) {
        uint256 oldValue = allowed_[msg.sender][_spender];
        if (_subtractedValue >= oldValue) {
            allowed_[msg.sender][_spender] = 0;
        } else {
            allowed_[msg.sender][_spender] = oldValue.sub(_subtractedValue);
        }
        emit Approval(msg.sender, _spender, allowed_[msg.sender][_spender]);
        return true;
    }

    /**
    * @dev Gets the balance of the specified address.
    * @param _owner The address to query the the balance of.
    * @return An uint256 representing the amount owned by the passed address.
    */
    function balanceOf(address _owner) public view returns (uint256) {
        return balances_[_owner];
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"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":"INITIAL_SUPPLY","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"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":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"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"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

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

bzzr://b7bda2c17bde120610d8756414d5e5ff698ab33fd555b18576ba4cdf45ac80bb