verified contract souce code = see in ETHERSCAN

pragma solidity ^0.4.24;

library SafeMath {

function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {

if (a == 0) {

return 0;

}

c = a * b;

assert(c / a == b);

return c;

}

function div(uint256 a, uint256 b) internal pure returns (uint256) {

return a / b;

}

function sub(uint256 a, uint256 b) internal pure returns (uint256) {

assert(b <= a);

return a - b;

}

function add(uint256 a, uint256 b) internal pure returns (uint256 c) {

c = a + b;

assert(c >= a);

return c;

}

}

contract Ownable {

address public owner;

address public newOwner;

event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);

constructor() public {

owner = msg.sender;

newOwner = address(0);

}

modifier onlyOwner() {

require(msg.sender == owner, "msg.sender == owner");

_;

}

function transferOwnership(address _newOwner) public onlyOwner {

require(address(0) != _newOwner, "address(0) != _newOwner");

newOwner = _newOwner;

}

function acceptOwnership() public {

require(msg.sender == newOwner, "msg.sender == newOwner");

emit OwnershipTransferred(owner, msg.sender);

owner = msg.sender;

newOwner = address(0);

}

}

contract Authorizable is Ownable {

mapping(address => bool) public authorized;

event AuthorizationSet(address indexed addressAuthorized, bool indexed authorization);

constructor() public {

authorized[msg.sender] = true;

}

modifier onlyAuthorized() {

require(authorized[msg.sender], "authorized[msg.sender]");

_;

}

function setAuthorized(address addressAuthorized, bool authorization) onlyOwner public {

emit AuthorizationSet(addressAuthorized, authorization);

authorized[addressAuthorized] = authorization;

}

}

contract ERC20Basic {

string public name;

string public symbol;

uint8 public decimals;

uint256 public totalSupply;

function balanceOf(address who) public constant returns (uint256);

function transfer(address to, uint256 value) public returns (bool);

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

}

contract ERC20 is ERC20Basic {

function allowance(address owner, address spender) public constant returns (uint256);

function transferFrom(address from, address to, uint256 value) public returns (bool);

function approve(address spender, uint256 value) public returns (bool);

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

}

contract BasicToken is ERC20Basic {

using SafeMath for uint256;

mapping(address => uint256) balances;

function transferFunction(address _sender, address _to, uint256 _value) internal returns (bool) {

require(_to != address(0), "_to != address(0)");

require(_to != address(this), "_to != address(this)");

require(_value <= balances[_sender], "_value <= balances[_sender]");

balances[_sender] = balances[_sender].sub(_value);

balances[_to] = balances[_to].add(_value);

emit Transfer(_sender, _to, _value);

return true;

}

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

return transferFunction(msg.sender, _to, _value);

}

function balanceOf(address _owner) public constant returns (uint256 balance) {

return balances[_owner];

}

}

contract ERC223TokenCompatible is BasicToken {

using SafeMath for uint256;

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

function transfer(address _to, uint256 _value, bytes _data, string _custom_fallback) public returns (bool success) {

require(_to != address(0), "_to != address(0)");

require(_to != address(this), "_to != address(this)");

require(_value <= balances[msg.sender], "_value <= balances[msg.sender]");

balances[msg.sender] = balances[msg.sender].sub(_value);

balances[_to] = balances[_to].add(_value);

if( isContract(_to) ) {

require( _to.call.value(0)( bytes4( keccak256( abi.encodePacked( _custom_fallback ) ) ), msg.sender, _value, _data), "_to.call.value(0)(bytes4(keccak256(_custom_fallback)), msg.sender, _value, _data)" );

}

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

return true;

}

function transfer(address _to, uint256 _value, bytes _data) public returns (bool success) {

return transfer( _to, _value, _data, "tokenFallback(address,uint256,bytes)");

}

//assemble the given address bytecode. If bytecode exists then the _addr is a contract.

function isContract(address _addr) private view returns (bool is_contract) {

uint256 length;

assembly {

//retrieve the size of the code on target address, this needs assembly

length := extcodesize(_addr)

}

return (length>0);

}

}

contract StandardToken is ERC20, BasicToken {

mapping (address => mapping (address => uint256)) internal allowed;

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

require(_to != address(0), "_to != address(0)");

require(_to != address(this), "_to != address(this)");

require(_value <= balances[_from], "_value <= balances[_from]");

require(_value <= allowed[_from][msg.sender], "_value <= allowed[_from][msg.sender]");

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;

}

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

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

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

return true;

}

function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {

return allowed[_owner][_spender];

}

function increaseApproval (address _spender, uint _addedValue) public returns (bool success) {

allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);

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

return true;

}

function decreaseApproval (address _spender, uint _subtractedValue) public returns (bool success) {

uint 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;

}

}

contract HumanStandardToken is StandardToken {

/* Approves and then calls the receiving contract */

function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) {

approve(_spender, _value);

require(_spender.call(bytes4(keccak256("receiveApproval(address,uint256,bytes)")), msg.sender, _value, _extraData), '_spender.call(bytes4(keccak256("receiveApproval(address,uint256,bytes)")), msg.sender, _value, _extraData)');

return true;

}

function approveAndCustomCall(address _spender, uint256 _value, bytes _extraData, bytes4 _customFunction) public returns (bool success) {

approve(_spender, _value);

require(_spender.call(_customFunction, msg.sender, _value, _extraData), "_spender.call(_customFunction, msg.sender, _value, _extraData)");

return true;

}

}

contract Startable is Ownable, Authorizable {

event Start();

bool public started = false;

modifier whenStarted() {

require( started || authorized[msg.sender], "started || authorized[msg.sender]" );

_;

}

function start() onlyOwner public {

started = true;

emit Start();

}

}

contract StartToken is Startable, ERC223TokenCompatible, StandardToken {

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

return super.transfer(_to, _value);

}

function transfer(address _to, uint256 _value, bytes _data) public whenStarted returns (bool) {

return super.transfer(_to, _value, _data);

}

function transfer(address _to, uint256 _value, bytes _data, string _custom_fallback) public whenStarted returns (bool) {

return super.transfer(_to, _value, _data, _custom_fallback);

}

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

return super.transferFrom(_from, _to, _value);

}

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

return super.approve(_spender, _value);

}

function increaseApproval(address _spender, uint _addedValue) public whenStarted returns (bool success) {

return super.increaseApproval(_spender, _addedValue);

}

function decreaseApproval(address _spender, uint _subtractedValue) public whenStarted returns (bool success) {

return super.decreaseApproval(_spender, _subtractedValue);

}

}

contract BurnToken is StandardToken {

uint256 public initialSupply;

event Burn(address indexed burner, uint256 value);

constructor(uint256 _totalSupply) internal {

initialSupply = _totalSupply;

}

function burnFunction(address _burner, uint256 _value) internal returns (bool) {

require(_value > 0, "_value > 0");

require(_value <= balances[_burner], "_value <= balances[_burner]");

balances[_burner] = balances[_burner].sub(_value);

totalSupply = totalSupply.sub(_value);

emit Burn(_burner, _value);

emit Transfer(_burner, address(0), _value);

return true;

}

function burn(uint256 _value) public returns(bool) {

return burnFunction(msg.sender, _value);

}

function burnFrom(address _from, uint256 _value) public returns (bool) {

require(_value <= allowed[_from][msg.sender], "_value <= allowed[_from][msg.sender]"); // check if it has the budget allowed

burnFunction(_from, _value);

allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);

return true;

}

}

contract Token is ERC20Basic, ERC223TokenCompatible, StandardToken, HumanStandardToken {

constructor(string _name, string _symbol, uint8 _decimals, uint256 _totalSupply ) public {

name = _name;

symbol = _symbol;

decimals = _decimals;

totalSupply = _totalSupply;

balances[msg.sender] = totalSupply;

emit Transfer(address(0), msg.sender, totalSupply);

}

}

contract TokenStart is Token, StartToken {

constructor(string _name, string _symbol, uint8 _decimals, uint256 _totalSupply ) public

Token(_name, _symbol, _decimals, _totalSupply )

{

}

}

contract TokenStartBurn is Token, StartToken, BurnToken {

constructor(string _name, string _symbol, uint8 _decimals, uint256 _totalSupply ) public

Token(_name, _symbol, _decimals, _totalSupply )

BurnToken(_totalSupply)

{

}

}

 

Ilove token - ETHEREUM 2018
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