ETH Price: $3,565.08 (-0.56%)
Gas: 37 Gwei

Contract

0xeA5Ab833afF71BD7D280f0A0bC86423D1703288A
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Token Holdings

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Value
Issue52865252018-03-20 1:38:082200 days ago1521509888IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865252018-03-20 1:38:082200 days ago1521509888IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865252018-03-20 1:38:082200 days ago1521509888IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865252018-03-20 1:38:082200 days ago1521509888IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865252018-03-20 1:38:082200 days ago1521509888IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284164
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344164
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000344424
Issue52865242018-03-20 1:37:342200 days ago1521509854IN
0xeA5Ab833...D1703288A
0 ETH0.000284424
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Contract Source Code Verified (Exact Match)

Contract Name:
Issuer

Compiler Version
v0.4.8+commit.60cc1668

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
/**
 *Submitted for verification at Etherscan.io on 2018-03-17
*/

/*
 * ERC20 interface
 * see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 {
  uint public totalSupply;
  function balanceOf(address who) constant returns (uint);
  function allowance(address owner, address spender) constant returns (uint);

  function transfer(address to, uint value) returns (bool ok);
  function transferFrom(address from, address to, uint value) returns (bool ok);
  function approve(address spender, uint value) returns (bool ok);
  event Transfer(address indexed from, address indexed to, uint value);
  event Approval(address indexed owner, address indexed spender, uint value);
}



/**
 * Math operations with safety checks
 */
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;
    }
  }
}



/**
 * Standard ERC20 token with Short Hand Attack and approve() race condition mitigation.
 *
 * Based on code by FirstBlood:
 * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is ERC20, SafeMath {

  mapping(address => uint) balances;
  mapping (address => mapping (address => uint)) allowed;

  // Interface marker
  bool public constant isToken = true;

  /**
   *
   * Fix for the 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) {
    balances[msg.sender] = safeSub(balances[msg.sender], _value);
    balances[_to] = safeAdd(balances[_to], _value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

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

    // Check is not needed because safeSub(_allowance, _value) will already throw if this condition is not met
    // if (_value > _allowance) throw;

    balances[_to] = safeAdd(balances[_to], _value);
    balances[_from] = safeSub(balances[_from], _value);
    allowed[_from][msg.sender] = safeSub(_allowance, _value);
    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) {

    // To change the approve amount you first have to reduce the addresses`
    //  allowance to zero by calling `approve(_spender, 0)` if it is not
    //  already 0 to mitigate the race condition described here:
    //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    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) {
    return allowed[_owner][_spender];
  }

}



/*
 * Ownable
 *
 * Base contract with an owner.
 * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
 */
contract Ownable {
  address public owner;

  function Ownable() {
    owner = msg.sender;
  }

  modifier onlyOwner() {
    if (msg.sender != owner) {
      throw;
    }
    _;
  }

  function transferOwnership(address newOwner) onlyOwner {
    if (newOwner != address(0)) {
      owner = newOwner;
    }
  }

}



/**
 * Issuer manages token distribution after the crowdsale.
 *
 * This contract is fed a CSV file with Ethereum addresses and their
 * issued token balances.
 *
 * Issuer act as a gate keeper to ensure there is no double issuance
 * per address, in the case we need to do several issuance batches,
 * there is a race condition or there is a fat finger error.
 *
 * Issuer contract gets allowance from the team multisig to distribute tokens.
 *
 */
contract Issuer is Ownable, SafeMath {

  /** Map addresses whose tokens we have already issued. */
  mapping(address => bool) public issued;

  /** Centrally issued token we are distributing to our contributors */
  StandardToken public token;

  /** Party (team multisig) who is in the control of the token pool. Note that this will be different from the owner address (scripted) that calls this contract. */
  address public masterTokenBalanceHolder;

  /** How many addresses have received their tokens. */
  uint public issuedCount;

  /**
   *
   * @param _issuerDeploymentAccount Ethereun account that controls the issuance process and pays the gas fee
   * @param _token Token contract address
   * @param _masterTokenBalanceHolder Multisig address that does StandardToken.approve() to give allowance for this contract
   */
  function Issuer(address _issuerDeploymentAccount, address _masterTokenBalanceHolder, StandardToken _token) {
    owner = _issuerDeploymentAccount;
    masterTokenBalanceHolder = _masterTokenBalanceHolder;
    token = _token;
  }

  function issue(address benefactor, uint amount) onlyOwner {
    if(issued[benefactor]) throw;
    token.transferFrom(masterTokenBalanceHolder, benefactor, amount);
    issued[benefactor] = true;
    issuedCount = safeAdd(amount, issuedCount);
  }

  /**
   * How many tokens we have left in our approval pool.
   */
  function getApprovedTokenCount() public constant returns(uint tokens) {
    return token.allowance(masterTokenBalanceHolder, address(this));
  }

}

Contract Security Audit

Contract ABI

[{"constant":true,"inputs":[],"name":"issuedCount","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"masterTokenBalanceHolder","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"getApprovedTokenCount","outputs":[{"name":"tokens","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"benefactor","type":"address"},{"name":"amount","type":"uint256"}],"name":"issue","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"issued","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"inputs":[{"name":"_issuerDeploymentAccount","type":"address"},{"name":"_masterTokenBalanceHolder","type":"address"},{"name":"_token","type":"address"}],"payable":false,"type":"constructor"}]

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Deployed Bytecode

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

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

00000000000000000000000000eee5f9ad50b926876cc187d8453fa0ceba141f000000000000000000000000da0131319b5d8faa0f405d6c7cd2e629ceb35ac0000000000000000000000000b64ef51c888972c908cfacf59b47c1afbc0ab8ac

-----Decoded View---------------
Arg [0] : _issuerDeploymentAccount (address): 0x00eEE5f9ad50B926876cC187D8453Fa0cEbA141f
Arg [1] : _masterTokenBalanceHolder (address): 0xDa0131319B5d8fAA0F405d6c7cD2E629ceb35AC0
Arg [2] : _token (address): 0xB64ef51C888972c908CFacf59B47C1AfBC0Ab8aC

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000000eee5f9ad50b926876cc187d8453fa0ceba141f
Arg [1] : 000000000000000000000000da0131319b5d8faa0f405d6c7cd2e629ceb35ac0
Arg [2] : 000000000000000000000000b64ef51c888972c908cfacf59b47c1afbc0ab8ac


Swarm Source

bzzr://0f7acb1e9d340bd63a40d755bae20d5932971301190f2c798ce68c3bc9e76d92

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