Contract Overview | Loopring
Balance: 0 Ether
Ether Value: $0
Transactions: 282445 txns
Token Tracker: Loopring (LRC)
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Contract Creator: 0xd2c4070a3563b0adfef2e6e0a604017f1c2ac3dfat txn 0x0f09ce492bf004a2e07ea6f306431ff63d972c860c975d4baefc3aeb215db965
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 Latest 25 txns From a total of 282445 Transactions

TxHash Age From To Value [TxFee]
0x50a92fde7050f9d3dae37b4025afa81fc2b1929a8a06865d76e892e7d9b9b6d722 mins ago0x821a918b769e3d2b944917ca70ac9e46dd4f7a80  IN   Loopring0 Ether0.000259255
0xe5d14e81ea07c62d032e4abe16cb4803022c1ce3838b06f0bb51cbbc9d060e2837 mins agoBinance_1  IN   Loopring0 Ether0.00155553
0x0adfc92e2b9d787ced055e7aeaa4c1347849c9d3f046316aa430df7e272e14a742 mins ago0x2ba65c4b836a02f9b536f4db344ca8028afc67c5  IN   Loopring0 Ether0.00043702
0xdf89e3ab7620bcce768de5a68e779f51fb968a88f99f724a8e9722a094cc2a3e1 hr 1 min agoBinance_2  IN   Loopring0 Ether0.00155553
0x935257ceb0a127db21999b032043cda6a1efff917d23bc6cdd978e1919f8f2392 hrs 20 mins agoOkex_1  IN   Loopring0 Ether0.00184255
0xbf361233eba5e16dea30e8c94a9ccb69e75483f7a52759ab87fe9ec20266020f2 hrs 21 mins agoBinance_2  IN   Loopring0 Ether0.00110745
0xfd7d109e8f2782766c3595f7589417558c274396bbfa621ce3167e85bea0cf052 hrs 24 mins agoGate.io_1  IN   Loopring0 Ether0.00022333575
0x656194c8bbee1d5a2021788db97e3df3bd829a02557276228f945db9ede18a2e4 hrs 2 mins ago0x52ca826e6a0a04a3ee7c156c912b8f1c05aefad5  IN   Loopring0 Ether0.0004383
0xfcb0e5a4f926510ecd51e6eb7902230e92ded4ca3e59ea6d3828fe3196f391b54 hrs 16 mins agoGate.io_1  IN   Loopring0 Ether0.00031408575
0x8a48a266e49f24ad980e0fd83f65477c2900daf353f1003d44b7c734804a99b64 hrs 20 mins ago0x3d288c55a88d76ebff8bc24e741d1fee0aac06a7  IN   Loopring0 Ether0.0010383
0x937cff8fd665065d2492206cd0e317aec5ab04418de0f702d5ef723b6ff0a2685 hrs 40 mins ago0x2a657174e9b25ec20bc7bc7bae816447c7d7bb7d  IN   Loopring0 Ether0.001030036
0xc1ce28c07b5a3b735674b9dcd0ebddc38bda33c3ba076f957c38fd7afd13d6475 hrs 43 mins ago0x29900f771a42bc4e2f4843af141140fe53e4445f  IN   Loopring0 Ether0.0004383
0x32abf55af3291e40412be89e4e14d681a1a239cb419b1ed0e463d1666771d0ca5 hrs 48 mins ago0x1ec515730108df20f1b709d99187d555271d2d91  IN   Loopring0 Ether0.0029532
0xbed6041491e3f928e3760f3ae711b479c3bc1d7906ff198930db9c1d463795935 hrs 48 mins ago0x14bdb5dc143fbd48e7f6c4bcd10be57f5498235f  IN   Loopring0 Ether0.00295832
0xe37843eadb862b44ce77776f14f68f372acc22fa784e30ed907269115e9d3fbd5 hrs 48 mins ago0xe35304de4b84ac03f1ac9177a1d93d0924761f3e  IN   Loopring0 Ether0.00296344
0x6bb19bcb1e3f2e716eeb243271746e5c387a3bbcd3c609ec67e8c03fe7e48f685 hrs 54 mins ago0x856f256eea47221b6806724eb2f3bb5329e74541  IN   Loopring0 Ether0.00014766
0x99bde6172f4879942f0ac07ea6db34de4556eb8a8fbb71c82cb2ce23b92829706 hrs 33 mins agoBittrex_1  IN   Loopring0 Ether0.00184575
0xc2c3a81c3dfab75544a21a111aad112bc7e922023c0fd97e1c53a7bd9607a3eb7 hrs 12 mins ago0x86375d9948f92fe482e59a0828039f6ce4933185  IN   Loopring0 Ether0.0004383
0x6e313387a267bb0666c28c7894bf371820cb5a88d3cfa1ef22b86811e46ad9ca7 hrs 23 mins ago0x36be35cacd5f5a164fbe04e3b097b1dcfca5232e  IN   Loopring0 Ether0.00258405
0x1852445acf4f5eda550030e3a3d951fb0daa95aafca2cf5f1f3775f7fd4304f711 hrs 52 mins agoBinance_3  IN   Loopring0 Ether0.00155553
0xb051a8822c63691718186ac0a1b6bc999f5561253c5327129233e741bc08441611 hrs 53 mins ago0xebfa9affd6f3d8d42ad5d53d3711640c08373ebe  IN   Loopring0 Ether0.0001706859
0x63ef6d830352b2a9aba51eaa96e80e261e743c7d9ea4dfb7805af04ce367b26e13 hrs 42 mins ago0xba405a54361eaec66d2735f6cfc816cb10be550c  IN   Loopring0 Ether0.00043702
0xb46b994a6d752f57b5e40f1f117148f455a6d6610072789c25aa0510c205199613 hrs 52 mins ago0x6767a3d5440a2f33e9328d7f832436f10c38cf9d  IN   Loopring0 Ether0.00043958
0x7a816e88f94b81ba09fbfa7a6b01067f82c40b3a51b024198147c872285c015d13 hrs 55 mins ago0x905c725b0a212d983db834309f1ba086847cc2ee  IN   Loopring0 Ether0.002247911
0xd52a8363e423e4c205c338e837b991b9fc582c7f4deba47117a153fa00f54a4114 hrs 14 mins agoCoinExchange.io  IN   Loopring0 Ether0.000415832
[ Download CSV Export  ] 
 Internal Transactions as a result of Contract Execution
 Latest 25 Internal Txns, Click Here To View More View All
ParentTxHash Block Age From To Value
0x563fe10af69086b73efa003995ddfc899f7399eb696ea29bf0b9d38483cc10114168082431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c321039.9 Ether
0x4ea19862a4e036e2d63dd57c13e66a6c502a0a13bf942e6db37eecc69116887c4168082431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c321010 Ether
0x00035691a1ff88de5d31044ac6a99fa425abfdd8f3dbd07959e8e7a703a51afc4168079431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32102 Ether
0x06131c985c31a822ee4fc7aac04cdcc3740ff355f6f912303920a63d7c569f804168079431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.01 Ether
0x4b76fc288c02b402d58bc779f5794a7fb870e61651dd06386bae0df6f854aaf64168077431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c321011 Ether
0x24422c3742742111be4991ff05844c4f827df0d3116a0ded90fc49421411ce854168071431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32101 Ether
0x49c945616444b324188e19f3cf3dc287bd85b7102d77c8fef3e8bc9f37aef9a44168071431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32103.02 Ether
0x9090d964f60e3ac2396967825dc45dd1df594309f42ffe0a878e05c56d4acf664168071431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.5 Ether
0x48b7c0711d25e8fd0e6441334f9c615cc0ee9a1466f5cc601a4c714bc041d3784168064431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32102.4 Ether
0x71981693d9467ac501e59dd88ae7dc33d9626e8aa69d2f73fda1d6cf3094f70d4168064431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32101 Ether
0xbb3c131765b167956613269283e8efb5e276610f0a3adcec7e318ea4bf8bde2c4168059431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32101.5 Ether
0x8a02b3207c8cbea6f7ac513d78ab8f4f1912bb491326a2ec232218dc595b84464168059431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c321010 Ether
0xc09e69eb20f81c8507c1a27375729b689859afe72d34ab81a5ab78cd1a73fad74168057431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.06 Ether
0xfca5dc056c837579ae97ba0e95cd2b61d66727b5e0a024dce1d9d7c85daf4c7e4168054431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32102 Ether
0x9ad229e3b20dcbec16f3da7fd7da7b4399c0964e6b85b55d11be5e4107e3316d4168054431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.5 Ether
0x51105d7f4160c4b572128f199b08aa03c8d30fc5fb8919690790763f75b936ca4168051431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32101 Ether
0x41b70620be547e66ecd65ecd1e30c3184c8ef1a01a2cafbbb26bc91d7bdee5114168051431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32104.280637246025 Ether
0xb9ac8c5c972f0513250cc8220c722c0be03b15354b5ae05eeec2f7fe2c18fa5f4168049431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c3210389 Ether
0xd935883034b49003083869c44c0ccbe5430dbe3317bf99f6a186d59df5dba7a14168046431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c3210284.8 Ether
0x36945d17845a06c94a8ce23e201b446cdb093dfb3839c4ac1f28bda152dd55914168046431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c3210330 Ether
0xf5f84bf164dbcea5b6a0747be52680353d8529594f2e73bf07e65f2eee3bf1174168046431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.01 Ether
0x2f467860510f9c5b98749c88750473008fc017df0d2ddc612cc1c1bb755102484168046431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.5 Ether
0xf96bcbba4cda2e28645167a1a4fd9610ac60a60fbb4161fadd2765eb2b0ab2394168044431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.01 Ether
0x897c9850d8c5151c968a638cb388091f9d41f9069c4f4e5209075068ca1be2694168044431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32100.4 Ether
0xe4f25cab5e78fea6e0645d66cf12f406a9f5209e4265edca18cd735fb69abaf14168044431 days 4 hrs ago0xef68e7c694f40c8202821edf525de3782458639f0x00073f7155459c9205010cb3453a0f392a0c32101.2198 Ether
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Contract Name: LoopringToken
Compiler Text: v0.4.13+commit.fb4cb1a
Optimization Enabled: No
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

/*

  Copyright 2017 Loopring Foundation.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

*/
pragma solidity ^0.4.11;

/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20Basic {
  uint public totalSupply;
  function balanceOf(address who) constant returns (uint);
  function transfer(address to, uint value);
  event Transfer(address indexed from, address indexed to, uint value);
}

/**
 * Math operations with safety checks
 */
library SafeMath {
  function mul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint a, uint b) internal returns (uint) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

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

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

/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
contract BasicToken is ERC20Basic {
  using SafeMath for uint;

  mapping(address => uint) balances;

  /**
   * @dev Fix for the ERC20 short address attack.
   */
  modifier onlyPayloadSize(uint size) {
     if(msg.data.length < size + 4) {
       throw;
     }
     _;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint _value) onlyPayloadSize(2 * 32) {
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
  }

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

}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) constant returns (uint);
  function transferFrom(address from, address to, uint value);
  function approve(address spender, uint value);
  event Approval(address indexed owner, address indexed spender, uint value);
}

/**
 * @title Standard ERC20 token
 *
 * @dev Implemantation of the basic standart token.
 * @dev https://github.com/ethereum/EIPs/issues/20
 * @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
 */
contract StandardToken is BasicToken, ERC20 {

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

  /**
   * @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 uint the amout of tokens to be transfered
   */
  function transferFrom(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) {
    var _allowance = allowed[_from][msg.sender];

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

    balances[_to] = balances[_to].add(_value);
    balances[_from] = balances[_from].sub(_value);
    allowed[_from][msg.sender] = _allowance.sub(_value);
    Transfer(_from, _to, _value);
  }

  /**
   * @dev Aprove the passed address to spend the specified amount of tokens on beahlf of msg.sender.
   * @param _spender The address which will spend the funds.
   * @param _value The amount of tokens to be spent.
   */
  function approve(address _spender, uint _value) {

    // 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);
  }

  /**
   * @dev Function to check the amount of tokens than 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 uint specifing the amount of tokens still avaible for the spender.
   */
  function allowance(address _owner, address _spender) constant returns (uint remaining) {
    return allowed[_owner][_spender];
  }

}

/// @title Loopring Protocol Token.
/// For more information about this token sale, please visit https://loopring.org
/// @author Kongliang Zhong - <[email protected]>, Daniel Wang - <[email protected]>.
contract LoopringToken is StandardToken {
    string public constant NAME = "LoopringCoin";
    string public constant SYMBOL = "LRC";
    uint public constant DECIMALS = 18;

    /// During token sale, we use one consistent price: 5000 LRC/ETH.
    /// We split the entire token sale period into 10 phases, each
    /// phase has a different bonus setting as specified in `bonusPercentages`.
    /// The real price for phase i is `(1 + bonusPercentages[i]/100.0) * BASE_RATE`.
    /// The first phase or early-bird phase has a much higher bonus.
    uint8[10] public bonusPercentages = [
        20,
        16,
        14,
        12,
        10,
        8,
        6,
        4,
        2,
        0
    ];

    uint public constant NUM_OF_PHASE = 10;
  
    /// Each phase contains exactly 15250 Ethereum blocks, which is roughly 3 days,
    /// which makes this 10-phase sale period roughly 30 days.
    /// See https://www.ethereum.org/crowdsale#scheduling-a-call
    uint16 public constant BLOCKS_PER_PHASE = 15250;

    /// This is where we hold ETH during this token sale. We will not transfer any Ether
    /// out of this address before we invocate the `close` function to finalize the sale. 
    /// This promise is not guanranteed by smart contract by can be verified with public
    /// Ethereum transactions data available on several blockchain browsers.
    /// This is the only address from which `start` and `close` can be invocated.
    ///
    /// Note: this will be initialized during the contract deployment.
    address public target;

    /// `firstblock` specifies from which block our token sale starts.
    /// This can only be modified once by the owner of `target` address.
    uint public firstblock = 0;

    /// Indicates whether unsold token have been issued. This part of LRC token
    /// is managed by the project team and is issued directly to `target`.
    bool public unsoldTokenIssued = false;

    /// Minimum amount of funds to be raised for the sale to succeed. 
    uint256 public constant GOAL = 50000 ether;

    /// Maximum amount of fund to be raised, the sale ends on reaching this amount.
    uint256 public constant HARD_CAP = 120000 ether;

    /// Maximum unsold ratio, this is hit when the mininum level of amount of fund is raised.
    uint public constant MAX_UNSOLD_RATIO = 675; // 67.5%

    /// Base exchange rate is set to 1 ETH = 5000 LRC.
    uint256 public constant BASE_RATE = 5000;

    /// A simple stat for emitting events.
    uint public totalEthReceived = 0;

    /// Issue event index starting from 0.
    uint public issueIndex = 0;

    /* 
     * EVENTS
     */

    /// Emitted only once after token sale starts.
    event SaleStarted();

    /// Emitted only once after token sale ended (all token issued).
    event SaleEnded();

    /// Emitted when a function is invocated by unauthorized addresses.
    event InvalidCaller(address caller);

    /// Emitted when a function is invocated without the specified preconditions.
    /// This event will not come alone with an exception.
    event InvalidState(bytes msg);

    /// Emitted for each sucuessful token purchase.
    event Issue(uint issueIndex, address addr, uint ethAmount, uint tokenAmount);

    /// Emitted if the token sale succeeded.
    event SaleSucceeded();

    /// Emitted if the token sale failed.
    /// When token sale failed, all Ether will be return to the original purchasing
    /// address with a minor deduction of transaction fee(gas)
    event SaleFailed();

    /*
     * MODIFIERS
     */

    modifier onlyOwner {
        if (target == msg.sender) {
            _;
        } else {
            InvalidCaller(msg.sender);
            throw;
        }
    }

    modifier beforeStart {
        if (!saleStarted()) {
            _;
        } else {
            InvalidState("Sale has not started yet");
            throw;
        }
    }

    modifier inProgress {
        if (saleStarted() && !saleEnded()) {
            _;
        } else {
            InvalidState("Sale is not in progress");
            throw;
        }
    }

    modifier afterEnd {
        if (saleEnded()) {
            _;
        } else {
            InvalidState("Sale is not ended yet");
            throw;
        }
    }

    /**
     * CONSTRUCTOR 
     * 
     * @dev Initialize the Loopring Token
     * @param _target The escrow account address, all ethers will
     * be sent to this address.
     * This address will be : 0x00073F7155459C9205010Cb3453a0f392a0C3210
     */
    function LoopringToken(address _target) {
        target = _target;
    }

    /*
     * PUBLIC FUNCTIONS
     */

    /// @dev Start the token sale.
    /// @param _firstblock The block from which the sale will start.
    function start(uint _firstblock) public onlyOwner beforeStart {
        if (_firstblock <= block.number) {
            // Must specify a block in the future.
            throw;
        }

        firstblock = _firstblock;
        SaleStarted();
    }

    /// @dev Triggers unsold tokens to be issued to `target` address.
    function close() public onlyOwner afterEnd {
        if (totalEthReceived < GOAL) {
            SaleFailed();
        } else {
            issueUnsoldToken();
            SaleSucceeded();
        }
    }

    /// @dev Returns the current price.
    function price() public constant returns (uint tokens) {
        return computeTokenAmount(1 ether);
    }

    /// @dev This default function allows token to be purchased by directly
    /// sending ether to this smart contract.
    function () payable {
        issueToken(msg.sender);
    }

    /// @dev Issue token based on Ether received.
    /// @param recipient Address that newly issued token will be sent to.
    function issueToken(address recipient) payable inProgress {
        // We only accept minimum purchase of 0.01 ETH.
        assert(msg.value >= 0.01 ether);

        uint tokens = computeTokenAmount(msg.value);
        totalEthReceived = totalEthReceived.add(msg.value);
        totalSupply = totalSupply.add(tokens);
        balances[recipient] = balances[recipient].add(tokens);

        Issue(
            issueIndex++,
            recipient,
            msg.value,
            tokens
        );

        if (!target.send(msg.value)) {
            throw;
        }
    }

    /*
     * INTERNAL FUNCTIONS
     */
  
    /// @dev Compute the amount of LRC token that can be purchased.
    /// @param ethAmount Amount of Ether to purchase LRC.
    /// @return Amount of LRC token to purchase
    function computeTokenAmount(uint ethAmount) internal constant returns (uint tokens) {
        uint phase = (block.number - firstblock).div(BLOCKS_PER_PHASE);

        // A safe check
        if (phase >= bonusPercentages.length) {
            phase = bonusPercentages.length - 1;
        }

        uint tokenBase = ethAmount.mul(BASE_RATE);
        uint tokenBonus = tokenBase.mul(bonusPercentages[phase]).div(100);

        tokens = tokenBase.add(tokenBonus);
    }

    /// @dev Issue unsold token to `target` address.
    /// The math is as follows:
    ///   +-------------------------------------------------------------+
    ///   |       Total Ethers Received        |                        |
    ///   +------------------------------------+  Unsold Token Portion  |
    ///   |   Lower Bound   |   Upper Bound    |                        |
    ///   +-------------------------------------------------------------+
    ///   |      50,000     |     60,000       |         67.5%          |
    ///   +-------------------------------------------------------------+
    ///   |      60,000     |     70,000       |         65.0%          |
    ///   +-------------------------------------------------------------+
    ///   |      70,000     |     80,000       |         62.5%          |
    ///   +-------------------------------------------------------------+
    ///   |      80,000     |     90,000       |         60.0%          |
    ///   +-------------------------------------------------------------+
    ///   |      90,000     |    100,000       |         57.5%          |
    ///   +-------------------------------------------------------------+
    ///   |     100,000     |    110,000       |         55.0%          |
    ///   +-------------------------------------------------------------+
    ///   |     110,000     |    120,000       |         52.5%          |
    ///   +-------------------------------------------------------------+
    ///   |     120,000     |                  |         50.0%          |
    ///   +-------------------------------------------------------------+
    function issueUnsoldToken() internal {
        if (unsoldTokenIssued) {
            InvalidState("Unsold token has been issued already");
        } else {
            // Add another safe guard 
            require(totalEthReceived >= GOAL);

            uint level = totalEthReceived.sub(GOAL).div(10000 ether);
            if (level > 7) {
                level = 7;
            }

            uint unsoldRatioInThousand = MAX_UNSOLD_RATIO - 25 * level;


            // Calculate the `unsoldToken` to be issued, the amount of `unsoldToken`
            // is based on the issued amount, that is the `totalSupply`, during 
            // the sale:
            //                   totalSupply
            //   unsoldToken = --------------- * r
            //                      1 - r
            uint unsoldToken = totalSupply.div(1000 - unsoldRatioInThousand).mul(unsoldRatioInThousand);

            // Adjust `totalSupply`.
            totalSupply = totalSupply.add(unsoldToken);
            // Issue `unsoldToken` to the target account.
            balances[target] = balances[target].add(unsoldToken);

            Issue(
                issueIndex++,
                target,
                0,
                unsoldToken
            );
            
            unsoldTokenIssued = true;
        }
    }

    /// @return true if sale has started, false otherwise.
    function saleStarted() constant returns (bool) {
        return (firstblock > 0 && block.number >= firstblock);
    }

    /// @return true if sale has ended, false otherwise.
    function saleEnded() constant returns (bool) {
        return firstblock > 0 && (saleDue() || hardCapReached());
    }

    /// @return true if sale is due when the last phase is finished.
    function saleDue() constant returns (bool) {
        return block.number >= firstblock + BLOCKS_PER_PHASE * NUM_OF_PHASE;
    }

    /// @return true if the hard cap is reached.
    function hardCapReached() constant returns (bool) {
        return totalEthReceived >= HARD_CAP;
    }
}

    Contract ABI  
[{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"bonusPercentages","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"DECIMALS","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"BLOCKS_PER_PHASE","outputs":[{"name":"","type":"uint16"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"MAX_UNSOLD_RATIO","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"HARD_CAP","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"BASE_RATE","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"close","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"saleStarted","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"issueIndex","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"recipient","type":"address"}],"name":"issueToken","outputs":[],"payable":true,"type":"function"},{"constant":false,"inputs":[{"name":"_firstblock","type":"uint256"}],"name":"start","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"hardCapReached","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"saleEnded","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"unsoldTokenIssued","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"price","outputs":[{"name":"tokens","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"GOAL","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"NAME","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalEthReceived","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"saleDue","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"target","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"NUM_OF_PHASE","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"firstblock","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"SYMBOL","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"inputs":[{"name":"_target","type":"address"}],"payable":false,"type":"constructor"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[],"name":"SaleStarted","type":"event"},{"anonymous":false,"inputs":[],"name":"SaleEnded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"caller","type":"address"}],"name":"InvalidCaller","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"msg","type":"bytes"}],"name":"InvalidState","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"issueIndex","type":"uint256"},{"indexed":false,"name":"addr","type":"address"},{"indexed":false,"name":"ethAmount","type":"uint256"},{"indexed":false,"name":"tokenAmount","type":"uint256"}],"name":"Issue","type":"event"},{"anonymous":false,"inputs":[],"name":"SaleSucceeded","type":"event"},{"anonymous":false,"inputs":[],"name":"SaleFailed","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"},{"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"}]

  Contract Creation Code Switch To Opcodes View
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    Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000000073f7155459c9205010cb3453a0f392a0c3210

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000073f7155459c9205010cb3453a0f392a0c3210


   Swarm Source:
bzzr://c28f0e4dfa60c1f704fec244ecddb7b811aeeeacfae31316717dd89fcca1aa44

 

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