ETH Price: $2,904.86 (-0.04%)
Gas: 5 Gwei

Token

HalalChain (HLC)
 

Overview

Max Total Supply

1,000,000,000 HLC

Holders

1,910 (0.00%)

Total Transfers

-

Market

Price

$0.00 @ 0.000000 ETH

Onchain Market Cap

$2,905,220.00

Circulating Supply Market Cap

$889,120.00

Other Info

Token Contract (WITH 9 Decimals)

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OVERVIEW

Qitmeer is a public chain based on Block DAG, Metrics among the security, openness, fairness and scalability. Qitmeer adopts a classic POW and UTXO data model and designs an asset issuing mechanism which requires the reserve of the base currency. HLC is ERC20 token of Qitmeer network.

Market

Volume (24H):$947.55
Market Capitalization:$889,120.00
Circulating Supply:306,041,892.00 HLC
Market Data Source: Coinmarketcap

ICO Information

Project Sector : Supply Chain
ICO Start Date : Nov 30, 2017
ICO End Date : Dec 30, 2017
Total Cap : $100,000,000
Hard Cap : 120,000 ETH
Token Distribution Date : Dec 30, 2017
ICO Price  : 0.00042553 ETH
Country : United Arab Emirates

# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
HLCToken

Compiler Version
v0.4.24+commit.e67f0147

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-07-31
*/

/**
 * ERC20 token
 *
 * https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 {
  // token总量
  uint public totalSupply;
  // 获取账户_owner拥有token的数量
  function balanceOf(address _owner) constant returns (uint);
  //获取账户_spender可以从账户_owner中转出token的数量
  function allowance(address _owner, address _spender) constant returns (uint);
  // 从发送者账户中往_to账户转数量为_value的token
  function transfer(address _to, uint _value) returns (bool ok);
  //从账户_from中往账户_to转数量为_value的token,与approve方法配合使用
  function transferFrom(address _from, address _to, uint _value) returns (bool ok);
  // 消息发送账户设置账户_spender能从发送账户中转出数量为_value的token
  function approve(address _spender, uint _value) returns (bool ok);
  //发生转账时必须要触发的事件, 由transfer函数的最后一行代码触发。
  event Transfer(address indexed _from, address indexed _to, uint _value);
  //当函数approve(address spender, uint value)成功执行时必须触发的事件
  event Approval(address indexed _owner, address indexed _spender, uint _value);
}



/**
 * 带安全检查的数学运算符
 */
contract SafeMath {
  function safeMul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function safeDiv(uint a, uint b) internal returns (uint) {
    assert(b > 0);
    uint c = a / b;
    assert(a == b * c + a % b);
    return c;
  }

  function safeSub(uint a, uint b) internal returns (uint) {
    assert(b <= a);
    return a - b;
  }

  function safeAdd(uint a, uint b) internal returns (uint) {
    uint c = a + b;
    assert(c>=a && c>=b);
    return c;
  }

  function max64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a >= b ? a : b;
  }

  function min64(uint64 a, uint64 b) internal constant returns (uint64) {
    return a < b ? a : b;
  }

  function max256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a >= b ? a : b;
  }

  function min256(uint256 a, uint256 b) internal constant returns (uint256) {
    return a < b ? a : b;
  }

  function assert(bool assertion) internal {
    if (!assertion) {
      throw;
    }
  }
}



/**
 * 修复了ERC20 short address attack问题的标准ERC20 Token.
 *
 * Based on:
 * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, SafeMath {

  //创建一个状态变量,该类型将一些address映射到无符号整数uint256。
  mapping(address => uint) balances;
  mapping (address => mapping (address => uint)) allowed;

  /**
   *
   * 修复ERC20 short address attack
   *
   * http://vessenes.com/the-erc20-short-address-attack-explained/
   */
  modifier onlyPayloadSize(uint size) {
     if(msg.data.length < size + 4) {
       throw;
     }
     _;
  }

  function transfer(address _to, uint _value) onlyPayloadSize(2 * 32) returns (bool success) {
    //从消息发送者账户中减去token数量_value
    balances[msg.sender] = safeSub(balances[msg.sender], _value);
    //往接收账户增加token数量_value
    balances[_to] = safeAdd(balances[_to], _value);
    //触发转币交易事件
    Transfer(msg.sender, _to, _value);
    return true;
  }

  function transferFrom(address _from, address _to, uint _value)  returns (bool success) {
    var _allowance = allowed[_from][msg.sender];

    //接收账户增加token数量_value
    balances[_to] = safeAdd(balances[_to], _value);
    //支出账户_from减去token数量_value
    balances[_from] = safeSub(balances[_from], _value);
    //消息发送者可以从账户_from中转出的数量减少_value
    allowed[_from][msg.sender] = safeSub(_allowance, _value);
    //触发转币交易事件
    Transfer(_from, _to, _value);
    return true;
  }

  function balanceOf(address _owner) constant returns (uint balance) {
    return balances[_owner];
  }

  function approve(address _spender, uint _value) returns (bool success) {
    if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  function allowance(address _owner, address _spender) constant returns (uint remaining) {
    //允许_spender从_owner中转出的token数
    return allowed[_owner][_spender];
  }

}


/**
 * 允许token拥有者减少token总量
 * 加Burned事件使其区别于正常的transfers
 */
contract BurnableToken is StandardToken {

  address public constant BURN_ADDRESS = 0;

  event Burned(address burner, uint burnedAmount);

  /**
   * 销毁Token
   *
   */
  function burn(uint burnAmount) {
    address burner = msg.sender;
    balances[burner] = safeSub(balances[burner], burnAmount);
    totalSupply = safeSub(totalSupply, burnAmount);
    Burned(burner, burnAmount);
    Transfer(burner, BURN_ADDRESS, burnAmount);
  }
}




/**
 * 发行Ethereum token.
 *
 * 创建token总量并分配给owner.
 * owner之后可以把token分配给其他人
 * owner可以销毁token
 *
 */
contract HLCToken is BurnableToken {

  string public name;  // Token名称,例如:Halal chain token
  string public symbol;  // Token标识,例如:HLC
  uint8 public decimals = 18;  // 最多的小数位数 18 是建议的默认值
  uint256 public totalSupply;
  function HLCToken(address _owner, string _name, string _symbol, uint _totalSupply, uint8 _decimals) {
    name = _name;
    symbol = _symbol;
    totalSupply = _totalSupply * 10 ** uint256(_decimals);
    decimals = _decimals;

    // 把创建token的总量分配给owner
    balances[_owner] = totalSupply;
  }
}

Contract Security Audit

Contract ABI

[{"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":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"burnAmount","type":"uint256"}],"name":"burn","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","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":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"BURN_ADDRESS","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_owner","type":"address"},{"name":"_name","type":"string"},{"name":"_symbol","type":"string"},{"name":"_totalSupply","type":"uint256"},{"name":"_decimals","type":"uint8"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"burner","type":"address"},{"indexed":false,"name":"burnedAmount","type":"uint256"}],"name":"Burned","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"},{"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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616c436861696e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003484c430000000000000000000000000000000000000000000000000000000000

Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000093ae51140169a39d9564fd11902c1ddf8bc0ce2100000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000000000000000000000000000000000003b9aca000000000000000000000000000000000000000000000000000000000000000009000000000000000000000000000000000000000000000000000000000000000a48616c616c436861696e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003484c430000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _owner (address): 0x93ae51140169a39D9564fd11902C1dDF8bC0ce21
Arg [1] : _name (string): HalalChain
Arg [2] : _symbol (string): HLC
Arg [3] : _totalSupply (uint256): 1000000000
Arg [4] : _decimals (uint8): 9

-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 00000000000000000000000093ae51140169a39d9564fd11902c1ddf8bc0ce21
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 000000000000000000000000000000000000000000000000000000003b9aca00
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [5] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [6] : 48616c616c436861696e00000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [8] : 484c430000000000000000000000000000000000000000000000000000000000


Swarm Source

bzzr://0c6b7d01008167d28f06518a4a9cb37532ac49a8d21ca6bc50b4d23b08b38617
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