Token

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

 contract DappToken *    - function DappToken (uint256 _initialS ...    - function transfer(address _to, uint25 ...    - function approve(address _spender, ui ...    - function transferFrom(address _from, ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2021-10-06
*/

pragma solidity ^0.4.2;

contract DappToken {
    string  public name = "Trace";
    string  public symbol = "TRCE";
    string  public standard = "Trace Token v1.0";
    uint256 public totalSupply;

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

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

    mapping(address => uint256) public balanceOf;
    mapping(address => mapping(address => uint256)) public allowance;

    function DappToken (uint256 _initialSupply) public {
        balanceOf[msg.sender] = _initialSupply;
        totalSupply = _initialSupply;
    }

    function transfer(address _to, uint256 _value) public returns (bool success) {
        require(balanceOf[msg.sender] >= _value);

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

        Transfer(msg.sender, _to, _value);

        return true;
    }

    function approve(address _spender, uint256 _value) public returns (bool success) {
        allowance[msg.sender][_spender] = _value;

        Approval(msg.sender, _spender, _value);

        return true;
    }

    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
        require(_value <= balanceOf[_from]);
        require(_value <= allowance[_from][msg.sender]);

        balanceOf[_from] -= _value;
        balanceOf[_to] += _value;

        allowance[_from][msg.sender] -= _value;

        Transfer(_from, _to, _value);

        return true;
    }
}

• 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":"success","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":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"standard","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","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":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_initialSupply","type":"uint256"}],"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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

00000000000000000000000000000000000000000000000000000000000f4240

-----Decoded View---------------
Arg [0] : _initialSupply (uint256): 1000000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000f4240

27:1621:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;53:29;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;53:29:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1024:215;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;177:26;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1247:398;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;126:44;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;126:44:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;452;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;89:30;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;89:30:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;731:285;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;503:64;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;53:29;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o;1024:215::-;1091:12;1150:6;1116:9;:21;1126:10;1116:21;;;;;;;;;;;;;;;:31;1138:8;1116:31;;;;;;;;;;;;;;;:40;;;;1190:8;1169:38;;1178:10;1169:38;;;1200:6;1169:38;;;;;;;;;;;;;;;;;;1227:4;1220:11;;1024:215;;;;:::o;177:26::-;;;;:::o;1247:398::-;1329:12;1372:9;:16;1382:5;1372:16;;;;;;;;;;;;;;;;1362:6;:26;;1354:35;;;;;;;;1418:9;:16;1428:5;1418:16;;;;;;;;;;;;;;;:28;1435:10;1418:28;;;;;;;;;;;;;;;;1408:6;:38;;1400:47;;;;;;;;1480:6;1460:9;:16;1470:5;1460:16;;;;;;;;;;;;;;;;:26;;;;;;;;;;;1515:6;1497:9;:14;1507:3;1497:14;;;;;;;;;;;;;;;;:24;;;;;;;;;;;1566:6;1534:9;:16;1544:5;1534:16;;;;;;;;;;;;;;;:28;1551:10;1534:28;;;;;;;;;;;;;;;;:38;;;;;;;;;;;1601:3;1585:28;;1594:5;1585:28;;;1606:6;1585:28;;;;;;;;;;;;;;;;;;1633:4;1626:11;;1247:398;;;;;:::o;126:44::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o;452:::-;;;;;;;;;;;;;;;;;:::o;89:30::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o;731:285::-;794:12;852:6;827:9;:21;837:10;827:21;;;;;;;;;;;;;;;;:31;;819:40;;;;;;;;897:6;872:9;:21;882:10;872:21;;;;;;;;;;;;;;;;:31;;;;;;;;;;;932:6;914:9;:14;924:3;914:14;;;;;;;;;;;;;;;;:24;;;;;;;;;;;972:3;951:33;;960:10;951:33;;;977:6;951:33;;;;;;;;;;;;;;;;;;1004:4;997:11;;731:285;;;;:::o;503:64::-;;;;;;;;;;;;;;;;;;;;;;;;;;:::o

bzzr://e44566abb505c5b72e46f5eca6879d49b1432ccd01a4fa1026de142827b07da9