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Contract Overview | district0xTokenContract
Balance: 0 Ether
Ether Value: $0
Transactions: 170244 txns
Token Contract: district0x (DNT)
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Contract Creator: 0x395abb8b97268480229e6c3784a545daee325a83at txn 0xdfea09c2490cd95e0845d2269017c86cd3b26073a5c715788a10f2cec27e8f17
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 Latest 25 txns from a total Of 170244 transactions
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TxHash Age From To Value [TxFee]
0x4ddfdf2584a07ddacedbcc5d228ee01d4c7a575d35fe1881507cb24199c4db129 mins ago0xb1b82c7e729967fd971bdbe9b348bbcd7f20f1ef  IN   district0xTokenContract0 Ether0.000307932
0x409709b98078a37697b6b98700cb71136ec4fb2632488a71a14c9b159a833c7c40 mins ago0x83a278662a1c98f2ce1111ff05dbca8e9ac33d3e  IN   district0xTokenContract0 Ether0.004408443
0x942d82deeafa226fb44d41f9849c3af443758be049e0c4fe14ed67d6b2a46b041 hr 41 mins ago0x412ce78c6cb4c227e1d1522ba484b4cc8c051b13  IN   district0xTokenContract0 Ether0.00314556
0xbeb2ac3e853b128f0e5f6bda820c15d53a498894e8471e4c9613e4dfe2abf41d2 hrs 2 mins ago0x9422b1b4cf5539307c91c12430d027461be98b91  IN   district0xTokenContract0 Ether0.004408443
0xfaa06172d57f0f33dce4f309573d0ec6c20f345d08077c11697031d69eebe7572 hrs 39 mins agoBittrex  IN   district0xTokenContract0 Ether0.00537295
0xb17334e468de280c5db6ee0f5e99dfd6c133892482fecded585d3d3f481085313 hrs 21 mins ago0xca6c813d4d7272ce494dfeedc7872d1c76132cce  IN   district0xTokenContract0 Ether0.00028596
0xa9880bb1a3b234088388883ab07f6cf2293f5dd5fc9a63a656869371025d92d73 hrs 38 mins ago0xca6c813d4d7272ce494dfeedc7872d1c76132cce  IN   district0xTokenContract0 Ether0.0001915932
0xedb9e51bc49a1434cdcceba036463d2e9a58046a69b7350664284b28d11d1d013 hrs 41 mins ago0xca6c813d4d7272ce494dfeedc7872d1c76132cce  IN   district0xTokenContract0 Ether0.00020686317
0x87bdf81478da43c035b9fd297b4b58452ed099fefc693e29bcf135ec70eaff253 hrs 44 mins ago0x600fd2cf1250cb627c80f3f678f1ec6edcd374f5  IN   district0xTokenContract0 Ether0.00114384
0x14d1fb76d673e4d4c08754eebdab0c5b99d0365a6e9ea37a3d20ca367bfc6b383 hrs 47 mins ago0x412ce78c6cb4c227e1d1522ba484b4cc8c051b13  IN   district0xTokenContract0 Ether0.00314556
0xca2fde112fb92b366bb4bdf6bbad04b77ec234eace1adad03f802a8f2d0554f55 hrs 20 mins agoBinanceWallet  IN   district0xTokenContract0 Ether0.004864584
0xd12dd5df955139dcd8970902588e0d3578de9b5ba1c203a740e6fcdb3364f1c65 hrs 32 mins ago0x412ce78c6cb4c227e1d1522ba484b4cc8c051b13  IN   district0xTokenContract0 Ether0.003143448
0xf8d875e1d6a1d639d87f62e88bfb0cb393f4c63c26a730eb50a4a3f985903d1d5 hrs 34 mins ago0xa08c4725c0e6a7d63ca1a653b15d18e3ab6d3798  IN   district0xTokenContract0 Ether0.0019064
0xd87850880492e9a0f4b4c35037acea2ca67c0ea303f02026cccaa6444fc4106c6 hrs 2 mins ago0xa08c4725c0e6a7d63ca1a653b15d18e3ab6d3798  IN   district0xTokenContract0 Ether0.00215046
0xbd1813b6ffe42eecb4c36b4efd54f256f4a69780d0714fd9b73006e4959e83186 hrs 11 mins ago0x412ce78c6cb4c227e1d1522ba484b4cc8c051b13  IN   district0xTokenContract0 Ether0.003660134
0x41c27b2d21aadb453fac01616a6d1834b28f6e7d2b068eae1e34f6b37d0a81666 hrs 20 mins ago0x395abb8b97268480229e6c3784a545daee325a83  IN   district0xTokenContract0 Ether0.000538255
0xf8764d8cc5c23c418e43a5bcfd7b18fd936946a07e161b1bc9820adab6e4110a7 hrs 24 mins agoBinanceWallet_2  IN   district0xTokenContract0 Ether0.004858056
0x4dfef4e1207ed22f664e36bb3f19cd6b29dbe78d272a6f1d3a3341be08cb78af7 hrs 29 mins agoBittrex  IN   district0xTokenContract0 Ether0.0047692
0x1fd57c9de555271594f4ab7a4f0f19b9662b3b244cde3b566ead31aaf861cf767 hrs 47 mins ago0x1239916da35817628eefb2bb1408ee520158f9ab  IN   district0xTokenContract0 Ether0.00171576
0x316a8ef39591e1a8ff3517a57fa5c10a672d1e84d36c4e5cbca9741ed6997fb28 hrs 12 mins ago0x9b11ff1664fa041bf4f1fcf3fe453a7e61ea47fb  IN   district0xTokenContract0 Ether0.001506218
0x5177e4eda05e993b10685eaa2900c40f62968cb3e6aaf975fede6f6e8476a64b8 hrs 26 mins ago0xf5dec4df55e2c4c084c05f7b99b12f031cf6ef6d  IN   district0xTokenContract0 Ether0.00143164
0x4679fa6bf42fbed2f1edf4d00f8a078f342d5a165ad6de6eae9001fc62e1ba9d8 hrs 36 mins agoBittrex  IN   district0xTokenContract0 Ether0.00537935
0x4b5003310a5b94584d8c4e058e89a538ab35c60b81e5dc5983ab91c23b6503578 hrs 45 mins ago0x4da8473d85582f0839c42bc8067c3bcf5a6b13eb  IN   district0xTokenContract0 Ether0.000763072
0x396236303ea560c5ac9052eba8cc20a2b87818ecbcb0a954c25a04df33d3b2b58 hrs 54 mins ago0xb36efd48c9912bd9fd58b67b65f7438f6364a256  IN   district0xTokenContract0 Ether0.0019064
0x5a92bc088eae82491b381b0ac8912994110efe83796d2aa6217165a5c8f430519 hrs 4 mins ago0x412ce78c6cb4c227e1d1522ba484b4cc8c051b13  IN   district0xTokenContract0 Ether0.00181108
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 Internal Transactions as a result of Contract Execution
 Latest 18 Internal Transactions

ParentTxHash Block Age From To Value
0x1861d7a8906521ef0400bde6f4b42f9ed769edd7a178c50abc0d9b07e7f8eeaa4908160159 days 6 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.01 Ether
0x2d7dc349827eda1161ccc8c7c128c8ab69aa17b6b5219fb2aaf0fbaa5845afea4627351208 days 4 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.0021 Ether
0x48dd11dcaba229781ab544e867e85c7985dea9215bea50b9d0a446f7d95120fe4627319208 days 4 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff1 Ether
0xf6602058105fd9843d3dedf99e946af8bad1bad9dd744c2b611621e5233774ec4608249211 days 6 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff1 Ether
0x65430d3361bf2746f3103926b5538ed647cca818b55576d7467c0a14da6e46874574607216 days 16 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.999 Ether
0x616fe37f3d2ebe62a26fcd4e8a3e2ccb3f63b1c833c9a66c042ca5db183f7d5b4397534245 days 4 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.02 Ether
0x24c237666b09da8ff86f521da60ecf111c6e36a1bc8414f15de2270777dd1dbe4216866297 days 8 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.001 Ether
0x5090ac1b08000dcbdc37185adb08f29840bd9a37e55bd0b5aa85e9198e72454a4181692306 days 11 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.33125859 Ether
0x53a1968087f51bd9a7c4fb5824300df3c72032bfcefc590dd89c09cae440d28a4169237309 days 11 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.01 Ether
0x9e4d35de18975f8f812703e0503f7e339d56cb369de9b427c6efd037b90e261d4161905311 days 5 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.1016 Ether
0xc331afc10c2d6c8d7156746b84d219a424c3523b9902fae74ab9ce2f06803c634161874311 days 5 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.1016 Ether
0xb9254f4058f7358c15dd1ed23018a55cbb4d5615d265c6f280974c753c6095a84161828311 days 6 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.1016 Ether
0xa8b5623b3756fafc26e5f09b3c657a2dce943ad3cbf7b3e1b399bf6c7cf1ebf74161812311 days 6 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.1016 Ether
0x3150f3b17ea3a9c389fa89d65bd9d75a480cbbb7bdc17960810eb454926593774149596314 days 5 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.02 Ether
0x9992d77df0aaa333a56d3e755a17af56dbbf1892f59575283afe6dfdda12ed234148854314 days 9 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff2 Ether
0x6dd1314945bcb7b269b9e4712ee8de8dff57671d4007c7afbc6075ed59ab78d14146010315 days 2 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.45334059 Ether
0x8d1e87161cc84ecba549dd00da62d22e5995a2c487bd5f427480bebb4681cfe64145939315 days 2 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.17033159 Ether
0xd548a8eceaadf76dfb838b8e0802815dfb9036df7c6b1bb1394078810a03fefd4145892315 days 2 hrs ago0x0abdace70d3790235af448c88547603b945604ea0xf8094e15c897518b5ac5287d7070ca5850efc6ff0.17077259 Ether
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Warning: The compiled contract might be susceptible to ZeroFunctionSelector (very low-severity), DelegateCallReturnValue (low-severity), ECRecoverMalformedInput (medium-severity), SkipEmptyStringLiteral (low-severity) Solidity compiler bugs.

Contract Source Code Verified (Exact match)
Contract Name: District0xNetworkToken
Compiler Version: v0.4.11+commit.68ef5810
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.11;


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;
    }
  }
}

contract Ownable {

    /// @dev `owner` is the only address that can call a function with this
    /// modifier
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    address public owner;

    /// @notice The Constructor assigns the message sender to be `owner`
    function Ownable() {
        owner = msg.sender;
    }

    address public newOwner;

    /// @notice `owner` can step down and assign some other address to this role
    /// @param _newOwner The address of the new owner.
    function changeOwner(address _newOwner) onlyOwner {
        newOwner = _newOwner;
    }


    function acceptOwnership() {
        if (msg.sender == newOwner) {
            owner = newOwner;
        }
    }
}

contract Pausable is Ownable {
  bool public stopped;
  event onEmergencyChanged(bool isStopped);

  modifier stopInEmergency {
    if (stopped) {
      throw;
    }
    _;
  }

  modifier onlyInEmergency {
    if (!stopped) {
      throw;
    }
    _;
  }

  // called by the owner on emergency, triggers stopped state
  function emergencyStop() external onlyOwner {
    stopped = true;
    onEmergencyChanged(stopped);
  }

  // called by the owner on end of emergency, returns to normal state
  function release() external onlyOwner onlyInEmergency {
    stopped = false;
    onEmergencyChanged(stopped);
  }

}

contract ERC20Basic {
  function totalSupply() constant returns (uint);
  function balanceOf(address who) constant returns (uint);
  function transfer(address to, uint value) returns (bool);
  event Transfer(address indexed from, address indexed to, uint value);
}

contract ERC20 is ERC20Basic {

  mapping(address => uint) balances;

  function allowance(address owner, address spender) constant returns (uint);
  function transferFrom(address from, address to, uint value) returns (bool);
  function approve(address spender, uint value) returns (bool);
  function approveAndCall(address spender, uint256 value, bytes extraData) returns (bool);
  event Approval(address indexed owner, address indexed spender, uint value);

  function doTransfer(address _from, address _to, uint _amount) internal returns(bool);
}

contract GrantsControlled {
    modifier onlyGrantsController { if (msg.sender != grantsController) throw; _; }

    address public grantsController;

    function GrantsControlled() { grantsController = msg.sender;}

    function changeGrantsController(address _newController) onlyGrantsController {
        grantsController = _newController;
    }
}

contract LimitedTransferToken is ERC20 {
  // Checks whether it can transfer or otherwise throws.
  modifier canTransfer(address _sender, uint _value) {
   if (_value > transferableTokens(_sender, uint64(now))) throw;
   _;
  }

  // Checks modifier and allows transfer if tokens are not locked.
  function transfer(address _to, uint _value) canTransfer(msg.sender, _value) returns (bool) {
   return super.transfer(_to, _value);
  }

  // Checks modifier and allows transfer if tokens are not locked.
  function transferFrom(address _from, address _to, uint _value) canTransfer(_from, _value) returns (bool) {
   return super.transferFrom(_from, _to, _value);
  }

  // Default transferable tokens function returns all tokens for a holder (no limit).
  function transferableTokens(address holder, uint64 time) constant public returns (uint256) {
    return balanceOf(holder);
  }
}

contract Controlled {
    /// @notice The address of the controller is the only address that can call
    ///  a function with this modifier
    modifier onlyController { if (msg.sender != controller) throw; _; }

    address public controller;

    function Controlled() { controller = msg.sender;}

    /// @notice Changes the controller of the contract
    /// @param _newController The new controller of the contract
    function changeController(address _newController) onlyController {
        controller = _newController;
    }
}

contract MiniMeToken is ERC20, Controlled {
    using SafeMath for uint;

    string public name;                //The Token's name: e.g. DigixDAO Tokens
    uint8 public decimals;             //Number of decimals of the smallest unit
    string public symbol;              //An identifier: e.g. REP
    string public version = 'MMT_0.1'; //An arbitrary versioning scheme


    /// @dev `Checkpoint` is the structure that attaches a block number to a
    ///  given value, the block number attached is the one that last changed the
    ///  value
    struct  Checkpoint {

        // `fromBlock` is the block number that the value was generated from
        uint128 fromBlock;

        // `value` is the amount of tokens at a specific block number
        uint128 value;
    }

    // `parentToken` is the Token address that was cloned to produce this token;
    //  it will be 0x0 for a token that was not cloned
    MiniMeToken public parentToken;

    // `parentSnapShotBlock` is the block number from the Parent Token that was
    //  used to determine the initial distribution of the Clone Token
    uint public parentSnapShotBlock;

    // `creationBlock` is the block number that the Clone Token was created
    uint public creationBlock;

    // `balances` is the map that tracks the balance of each address, in this
    //  contract when the balance changes the block number that the change
    //  occurred is also included in the map
    mapping (address => Checkpoint[]) balances;

    // `allowed` tracks any extra transfer rights as in all ERC20 tokens
    mapping (address => mapping (address => uint256)) allowed;

    // Tracks the history of the `totalSupply` of the token
    Checkpoint[] totalSupplyHistory;

    // Flag that determines if the token is transferable or not.
    bool public transfersEnabled;

    // The factory used to create new clone tokens
    MiniMeTokenFactory public tokenFactory;

////////////////
// Constructor
////////////////

    /// @notice Constructor to create a MiniMeToken
    /// @param _tokenFactory The address of the MiniMeTokenFactory contract that
    ///  will create the Clone token contracts, the token factory needs to be
    ///  deployed first
    /// @param _parentToken Address of the parent token, set to 0x0 if it is a
    ///  new token
    /// @param _parentSnapShotBlock Block of the parent token that will
    ///  determine the initial distribution of the clone token, set to 0 if it
    ///  is a new token
    /// @param _tokenName Name of the new token
    /// @param _decimalUnits Number of decimals of the new token
    /// @param _tokenSymbol Token Symbol for the new token
    /// @param _transfersEnabled If true, tokens will be able to be transferred
    function MiniMeToken(
        address _tokenFactory,
        address _parentToken,
        uint _parentSnapShotBlock,
        string _tokenName,
        uint8 _decimalUnits,
        string _tokenSymbol,
        bool _transfersEnabled
    ) {
        tokenFactory = MiniMeTokenFactory(_tokenFactory);
        name = _tokenName;                                 // Set the name
        decimals = _decimalUnits;                          // Set the decimals
        symbol = _tokenSymbol;                             // Set the symbol
        parentToken = MiniMeToken(_parentToken);
        parentSnapShotBlock = _parentSnapShotBlock;
        transfersEnabled = _transfersEnabled;
        creationBlock = block.number;
    }


///////////////////
// ERC20 Methods
///////////////////

    /// @notice Send `_amount` tokens to `_to` from `msg.sender`
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint256 _amount) returns (bool success) {
        if (!transfersEnabled) throw;
        return doTransfer(msg.sender, _to, _amount);
    }

    /// @notice Send `_amount` tokens to `_to` from `_from` on the condition it
    ///  is approved by `_from`
    /// @param _from The address holding the tokens being transferred
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return True if the transfer was successful
    function transferFrom(address _from, address _to, uint256 _amount
    ) returns (bool success) {

        // The controller of this contract can move tokens around at will,
        //  this is important to recognize! Confirm that you trust the
        //  controller of this contract, which in most situations should be
        //  another open source smart contract or 0x0
        if (msg.sender != controller) {
            if (!transfersEnabled) throw;

            // The standard ERC 20 transferFrom functionality
            if (allowed[_from][msg.sender] < _amount) return false;
            allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);
        }
        return doTransfer(_from, _to, _amount);
    }

    /// @dev This is the actual transfer function in the token contract, it can
    ///  only be called by other functions in this contract.
    /// @param _from The address holding the tokens being transferred
    /// @param _to The address of the recipient
    /// @param _amount The amount of tokens to be transferred
    /// @return True if the transfer was successful
    function doTransfer(address _from, address _to, uint _amount
    ) internal returns(bool) {

           if (_amount == 0) {
               return true;
           }

           if (parentSnapShotBlock >= block.number) throw;

           // Do not allow transfer to 0x0 or the token contract itself
           if ((_to == 0) || (_to == address(this))) throw;

           // If the amount being transfered is more than the balance of the
           //  account the transfer returns false
           var previousBalanceFrom = balanceOfAt(_from, block.number);
           if (previousBalanceFrom < _amount) {
               return false;
           }

           // Alerts the token controller of the transfer
           if (isContract(controller)) {
               if (!TokenController(controller).onTransfer(_from, _to, _amount))
               throw;
           }

           // First update the balance array with the new value for the address
           //  sending the tokens
           updateValueAtNow(balances[_from], previousBalanceFrom.sub(_amount));

           // Then update the balance array with the new value for the address
           //  receiving the tokens
           var previousBalanceTo = balanceOfAt(_to, block.number);
           updateValueAtNow(balances[_to], previousBalanceTo.add(_amount));

           // An event to make the transfer easy to find on the blockchain
           Transfer(_from, _to, _amount);

           return true;
    }

    /// @param _owner The address that's balance is being requested
    /// @return The balance of `_owner` at the current block
    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balanceOfAt(_owner, block.number);
    }

    /// @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
    ///  its behalf. This is a modified version of the ERC20 approve function
    ///  to be a little bit safer
    /// @param _spender The address of the account able to transfer the tokens
    /// @param _amount The amount of tokens to be approved for transfer
    /// @return True if the approval was successful
    function approve(address _spender, uint256 _amount) returns (bool success) {
        if (!transfersEnabled) throw;

        // 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 ((_amount!=0) && (allowed[msg.sender][_spender] !=0)) throw;

        // Alerts the token controller of the approve function call
        if (isContract(controller)) {
            if (!TokenController(controller).onApprove(msg.sender, _spender, _amount))
                throw;
        }

        allowed[msg.sender][_spender] = _amount;
        Approval(msg.sender, _spender, _amount);
        return true;
    }

    /// @dev This function makes it easy to read the `allowed[]` map
    /// @param _owner The address of the account that owns the token
    /// @param _spender The address of the account able to transfer the tokens
    /// @return Amount of remaining tokens of _owner that _spender is allowed
    ///  to spend
    function allowance(address _owner, address _spender
    ) constant returns (uint256 remaining) {
        return allowed[_owner][_spender];
    }

    /// @notice `msg.sender` approves `_spender` to send `_amount` tokens on
    ///  its behalf, and then a function is triggered in the contract that is
    ///  being approved, `_spender`. This allows users to use their tokens to
    ///  interact with contracts in one function call instead of two
    /// @param _spender The address of the contract able to transfer the tokens
    /// @param _amount The amount of tokens to be approved for transfer
    /// @return True if the function call was successful
    function approveAndCall(address _spender, uint256 _amount, bytes _extraData
    ) returns (bool success) {
        if (!approve(_spender, _amount)) throw;

        ApproveAndCallFallBack(_spender).receiveApproval(
            msg.sender,
            _amount,
            this,
            _extraData
        );

        return true;
    }

    /// @dev This function makes it easy to get the total number of tokens
    /// @return The total number of tokens
    function totalSupply() constant returns (uint) {
        return totalSupplyAt(block.number);
    }


////////////////
// Query balance and totalSupply in History
////////////////

    /// @dev Queries the balance of `_owner` at a specific `_blockNumber`
    /// @param _owner The address from which the balance will be retrieved
    /// @param _blockNumber The block number when the balance is queried
    /// @return The balance at `_blockNumber`
    function balanceOfAt(address _owner, uint _blockNumber) constant
        returns (uint) {

        // These next few lines are used when the balance of the token is
        //  requested before a check point was ever created for this token, it
        //  requires that the `parentToken.balanceOfAt` be queried at the
        //  genesis block for that token as this contains initial balance of
        //  this token
        if ((balances[_owner].length == 0)
            || (balances[_owner][0].fromBlock > _blockNumber)) {
            if (address(parentToken) != 0) {
                return parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock));
            } else {
                // Has no parent
                return 0;
            }

        // This will return the expected balance during normal situations
        } else {
            return getValueAt(balances[_owner], _blockNumber);
        }
    }

    /// @notice Total amount of tokens at a specific `_blockNumber`.
    /// @param _blockNumber The block number when the totalSupply is queried
    /// @return The total amount of tokens at `_blockNumber`
    function totalSupplyAt(uint _blockNumber) constant returns(uint) {

        // These next few lines are used when the totalSupply of the token is
        //  requested before a check point was ever created for this token, it
        //  requires that the `parentToken.totalSupplyAt` be queried at the
        //  genesis block for this token as that contains totalSupply of this
        //  token at this block number.
        if ((totalSupplyHistory.length == 0)
            || (totalSupplyHistory[0].fromBlock > _blockNumber)) {
            if (address(parentToken) != 0) {
                return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock));
            } else {
                return 0;
            }

        // This will return the expected totalSupply during normal situations
        } else {
            return getValueAt(totalSupplyHistory, _blockNumber);
        }
    }

////////////////
// Clone Token Method
////////////////

    /// @notice Creates a new clone token with the initial distribution being
    ///  this token at `_snapshotBlock`
    /// @param _cloneTokenName Name of the clone token
    /// @param _cloneDecimalUnits Number of decimals of the smallest unit
    /// @param _cloneTokenSymbol Symbol of the clone token
    /// @param _snapshotBlock Block when the distribution of the parent token is
    ///  copied to set the initial distribution of the new clone token;
    ///  if the block is zero than the actual block, the current block is used
    /// @param _transfersEnabled True if transfers are allowed in the clone
    /// @return The address of the new MiniMeToken Contract
    function createCloneToken(
        string _cloneTokenName,
        uint8 _cloneDecimalUnits,
        string _cloneTokenSymbol,
        uint _snapshotBlock,
        bool _transfersEnabled
        ) returns(address) {
        if (_snapshotBlock == 0) _snapshotBlock = block.number;
        MiniMeToken cloneToken = tokenFactory.createCloneToken(
            this,
            _snapshotBlock,
            _cloneTokenName,
            _cloneDecimalUnits,
            _cloneTokenSymbol,
            _transfersEnabled
            );

        cloneToken.changeController(msg.sender);

        // An event to make the token easy to find on the blockchain
        NewCloneToken(address(cloneToken), _snapshotBlock);
        return address(cloneToken);
    }

////////////////
// Generate and destroy tokens
////////////////

    /// @notice Generates `_amount` tokens that are assigned to `_owner`
    /// @param _owner The address that will be assigned the new tokens
    /// @param _amount The quantity of tokens generated
    /// @return True if the tokens are generated correctly
    function generateTokens(address _owner, uint _amount
    ) onlyController returns (bool) {
        uint curTotalSupply = getValueAt(totalSupplyHistory, block.number);
        updateValueAtNow(totalSupplyHistory, curTotalSupply.add(_amount));
        var previousBalanceTo = balanceOf(_owner);
        updateValueAtNow(balances[_owner], previousBalanceTo.add(_amount));
        Transfer(0, _owner, _amount);
        return true;
    }


    /// @notice Burns `_amount` tokens from `_owner`
    /// @param _owner The address that will lose the tokens
    /// @param _amount The quantity of tokens to burn
    /// @return True if the tokens are burned correctly
    function destroyTokens(address _owner, uint _amount
    ) onlyController returns (bool) {
        uint curTotalSupply = getValueAt(totalSupplyHistory, block.number);
        if (curTotalSupply < _amount) throw;
        updateValueAtNow(totalSupplyHistory, curTotalSupply.sub(_amount));
        var previousBalanceFrom = balanceOf(_owner);
        if (previousBalanceFrom < _amount) throw;
        updateValueAtNow(balances[_owner], previousBalanceFrom.sub(_amount));
        Transfer(_owner, 0, _amount);
        return true;
    }

////////////////
// Enable tokens transfers
////////////////


    /// @notice Enables token holders to transfer their tokens freely if true
    /// @param _transfersEnabled True if transfers are allowed in the clone
    function enableTransfers(bool _transfersEnabled) onlyController {
        transfersEnabled = _transfersEnabled;
    }

////////////////
// Internal helper functions to query and set a value in a snapshot array
////////////////

    /// @dev `getValueAt` retrieves the number of tokens at a given block number
    /// @param checkpoints The history of values being queried
    /// @param _block The block number to retrieve the value at
    /// @return The number of tokens being queried
    function getValueAt(Checkpoint[] storage checkpoints, uint _block
    ) constant internal returns (uint) {
        if (checkpoints.length == 0) return 0;

        // Shortcut for the actual value
        if (_block >= checkpoints[checkpoints.length-1].fromBlock)
            return checkpoints[checkpoints.length-1].value;
        if (_block < checkpoints[0].fromBlock) return 0;

        // Binary search of the value in the array
        uint min = 0;
        uint max = checkpoints.length-1;
        while (max > min) {
            uint mid = (max + min + 1)/ 2;
            if (checkpoints[mid].fromBlock<=_block) {
                min = mid;
            } else {
                max = mid-1;
            }
        }
        return checkpoints[min].value;
    }

    /// @dev `updateValueAtNow` used to update the `balances` map and the
    ///  `totalSupplyHistory`
    /// @param checkpoints The history of data being updated
    /// @param _value The new number of tokens
    function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value
    ) internal  {
        if ((checkpoints.length == 0)
        || (checkpoints[checkpoints.length -1].fromBlock < block.number)) {
               Checkpoint newCheckPoint = checkpoints[ checkpoints.length++ ];
               newCheckPoint.fromBlock =  uint128(block.number);
               newCheckPoint.value = uint128(_value);
           } else {
               Checkpoint oldCheckPoint = checkpoints[checkpoints.length-1];
               oldCheckPoint.value = uint128(_value);
           }
    }

    /// @dev Internal function to determine if an address is a contract
    /// @param _addr The address being queried
    /// @return True if `_addr` is a contract
    function isContract(address _addr) constant internal returns(bool) {
        uint size;
        if (_addr == 0) return false;
        assembly {
            size := extcodesize(_addr)
        }
        return size>0;
    }

    /// @dev Helper function to return a min betwen the two uints
    function min(uint a, uint b) internal returns (uint) {
        return a < b ? a : b;
    }

    /// @notice The fallback function: If the contract's controller has not been
    ///  set to 0, then the `proxyPayment` method is called which relays the
    ///  ether and creates tokens as described in the token controller contract
    function ()  payable {
        if (isContract(controller)) {
            if (! TokenController(controller).proxyPayment.value(msg.value)(msg.sender))
                throw;
        } else {
            throw;
        }
    }

    //////////
    // Safety Methods
    //////////

    /// @notice This method can be used by the controller to extract mistakenly
    ///  sent tokens to this contract.
    /// @param _token The address of the token contract that you want to recover
    ///  set to 0 in case you want to extract ether.
    /// @param _claimer Address that tokens will be send to
    function claimTokens(address _token, address _claimer) onlyController {
        if (_token == 0x0) {
            _claimer.transfer(this.balance);
            return;
        }

        ERC20Basic token = ERC20Basic(_token);
        uint balance = token.balanceOf(this);
        token.transfer(_claimer, balance);
        ClaimedTokens(_token, _claimer, balance);
    }


////////////////
// Events
////////////////
    event ClaimedTokens(address indexed _token, address indexed _claimer, uint _amount);
    event Transfer(address indexed _from, address indexed _to, uint256 _amount);
    event NewCloneToken(address indexed _cloneToken, uint _snapshotBlock);
    event Approval(
        address indexed _owner,
        address indexed _spender,
        uint256 _amount
        );

}


////////////////
// MiniMeTokenFactory
////////////////

/// @dev This contract is used to generate clone contracts from a contract.
///  In solidity this is the way to create a contract from a contract of the
///  same class
contract MiniMeTokenFactory {

    /// @notice Update the DApp by creating a new token with new functionalities
    ///  the msg.sender becomes the controller of this clone token
    /// @param _parentToken Address of the token being cloned
    /// @param _snapshotBlock Block of the parent token that will
    ///  determine the initial distribution of the clone token
    /// @param _tokenName Name of the new token
    /// @param _decimalUnits Number of decimals of the new token
    /// @param _tokenSymbol Token Symbol for the new token
    /// @param _transfersEnabled If true, tokens will be able to be transferred
    /// @return The address of the new token contract
    function createCloneToken(
        address _parentToken,
        uint _snapshotBlock,
        string _tokenName,
        uint8 _decimalUnits,
        string _tokenSymbol,
        bool _transfersEnabled
    ) returns (MiniMeToken) {
        MiniMeToken newToken = new MiniMeToken(
            this,
            _parentToken,
            _snapshotBlock,
            _tokenName,
            _decimalUnits,
            _tokenSymbol,
            _transfersEnabled
            );

        newToken.changeController(msg.sender);
        return newToken;
    }
}

contract VestedToken is LimitedTransferToken, GrantsControlled {
  using SafeMath for uint;

  uint256 MAX_GRANTS_PER_ADDRESS = 20;

  struct TokenGrant {
    address granter;     // 20 bytes
    uint256 value;       // 32 bytes
    uint64 cliff;
    uint64 vesting;
    uint64 start;        // 3 * 8 = 24 bytes
    bool revokable;
    bool burnsOnRevoke;  // 2 * 1 = 2 bits? or 2 bytes?
  } // total 78 bytes = 3 sstore per operation (32 per sstore)

  mapping (address => TokenGrant[]) public grants;

  event NewTokenGrant(address indexed from, address indexed to, uint256 value, uint256 grantId);

  /**
   * @dev Grant tokens to a specified address
   * @param _to address The address which the tokens will be granted to.
   * @param _value uint256 The amount of tokens to be granted.
   * @param _start uint64 Time of the beginning of the grant.
   * @param _cliff uint64 Time of the cliff period.
   * @param _vesting uint64 The vesting period.
   */
  function grantVestedTokens(
    address _to,
    uint256 _value,
    uint64 _start,
    uint64 _cliff,
    uint64 _vesting,
    bool _revokable,
    bool _burnsOnRevoke
  ) onlyGrantsController public {

    // Check for date inconsistencies that may cause unexpected behavior
    if (_cliff < _start || _vesting < _cliff) {
      throw;
    }

    if (tokenGrantsCount(_to) > MAX_GRANTS_PER_ADDRESS) throw;   // To prevent a user being spammed and have his balance locked (out of gas attack when calculating vesting).

    uint count = grants[_to].push(
                TokenGrant(
                  _revokable ? msg.sender : 0, // avoid storing an extra 20 bytes when it is non-revokable
                  _value,
                  _cliff,
                  _vesting,
                  _start,
                  _revokable,
                  _burnsOnRevoke
                )
              );

    transfer(_to, _value);

    NewTokenGrant(msg.sender, _to, _value, count - 1);
  }

  /**
   * @dev Revoke the grant of tokens of a specifed address.
   * @param _holder The address which will have its tokens revoked.
   * @param _grantId The id of the token grant.
   */
  function revokeTokenGrant(address _holder, uint _grantId) public {
    TokenGrant grant = grants[_holder][_grantId];

    if (!grant.revokable) { // Check if grant was revokable
      throw;
    }

    if (grant.granter != msg.sender) { // Only granter can revoke it
      throw;
    }

    address receiver = grant.burnsOnRevoke ? 0xdead : msg.sender;

    uint256 nonVested = nonVestedTokens(grant, uint64(now));

    // remove grant from array
    delete grants[_holder][_grantId];
    grants[_holder][_grantId] = grants[_holder][grants[_holder].length.sub(1)];
    grants[_holder].length -= 1;

    // This will call MiniMe's doTransfer method, so token is transferred according to
    // MiniMe Token logic
    doTransfer(_holder, receiver, nonVested);

    Transfer(_holder, receiver, nonVested);
  }

  /**
   * @dev Revoke all grants of tokens of a specifed address.
   * @param _holder The address which will have its tokens revoked.
   */
    function revokeAllTokenGrants(address _holder) {
        var grandsCount = tokenGrantsCount(_holder);
        for (uint i = 0; i < grandsCount; i++) {
          revokeTokenGrant(_holder, 0);
        }
    }

  /**
   * @dev Calculate the total amount of transferable tokens of a holder at a given time
   * @param holder address The address of the holder
   * @param time uint64 The specific time.
   * @return An uint representing a holder's total amount of transferable tokens.
   */
  function transferableTokens(address holder, uint64 time) constant public returns (uint256) {
    uint256 grantIndex = tokenGrantsCount(holder);

    if (grantIndex == 0) return balanceOf(holder); // shortcut for holder without grants

    // Iterate through all the grants the holder has, and add all non-vested tokens
    uint256 nonVested = 0;
    for (uint256 i = 0; i < grantIndex; i++) {
      nonVested = SafeMath.add(nonVested, nonVestedTokens(grants[holder][i], time));
    }

    // Balance - totalNonVested is the amount of tokens a holder can transfer at any given time
    uint256 vestedTransferable = SafeMath.sub(balanceOf(holder), nonVested);

    // Return the minimum of how many vested can transfer and other value
    // in case there are other limiting transferability factors (default is balanceOf)
    return SafeMath.min256(vestedTransferable, super.transferableTokens(holder, time));
  }

  /**
   * @dev Check the amount of grants that an address has.
   * @param _holder The holder of the grants.
   * @return A uint representing the total amount of grants.
   */
  function tokenGrantsCount(address _holder) constant returns (uint index) {
    return grants[_holder].length;
  }

  /**
   * @dev Calculate amount of vested tokens at a specifc time.
   * @param tokens uint256 The amount of tokens grantted.
   * @param time uint64 The time to be checked
   * @param start uint64 A time representing the begining of the grant
   * @param cliff uint64 The cliff period.
   * @param vesting uint64 The vesting period.
   * @return An uint representing the amount of vested tokensof a specif grant.
   *  transferableTokens
   *   |                         _/--------   vestedTokens rect
   *   |                       _/
   *   |                     _/
   *   |                   _/
   *   |                 _/
   *   |                /
   *   |              .|
   *   |            .  |
   *   |          .    |
   *   |        .      |
   *   |      .        |
   *   |    .          |
   *   +===+===========+---------+----------> time
   *      Start       Clift    Vesting
   */
  function calculateVestedTokens(
    uint256 tokens,
    uint256 time,
    uint256 start,
    uint256 cliff,
    uint256 vesting) constant returns (uint256)
    {
      // Shortcuts for before cliff and after vesting cases.
      if (time < cliff) return 0;
      if (time >= vesting) return tokens;

      // Interpolate all vested tokens.
      // As before cliff the shortcut returns 0, we can use just calculate a value
      // in the vesting rect (as shown in above's figure)

      // vestedTokens = tokens * (time - start) / (vesting - start)
      uint256 vestedTokens = SafeMath.div(
                                    SafeMath.mul(
                                      tokens,
                                      SafeMath.sub(time, start)
                                      ),
                                    SafeMath.sub(vesting, start)
                                    );

      return vestedTokens;
  }

  /**
   * @dev Get all information about a specifc grant.
   * @param _holder The address which will have its tokens revoked.
   * @param _grantId The id of the token grant.
   * @return Returns all the values that represent a TokenGrant(address, value, start, cliff,
   * revokability, burnsOnRevoke, and vesting) plus the vested value at the current time.
   */
  function tokenGrant(address _holder, uint _grantId) constant returns (address granter, uint256 value, uint256 vested, uint64 start, uint64 cliff, uint64 vesting, bool revokable, bool burnsOnRevoke) {
    TokenGrant grant = grants[_holder][_grantId];

    granter = grant.granter;
    value = grant.value;
    start = grant.start;
    cliff = grant.cliff;
    vesting = grant.vesting;
    revokable = grant.revokable;
    burnsOnRevoke = grant.burnsOnRevoke;

    vested = vestedTokens(grant, uint64(now));
  }

  /**
   * @dev Get the amount of vested tokens at a specific time.
   * @param grant TokenGrant The grant to be checked.
   * @param time The time to be checked
   * @return An uint representing the amount of vested tokens of a specific grant at a specific time.
   */
  function vestedTokens(TokenGrant grant, uint64 time) private constant returns (uint256) {
    return calculateVestedTokens(
      grant.value,
      uint256(time),
      uint256(grant.start),
      uint256(grant.cliff),
      uint256(grant.vesting)
    );
  }

  /**
   * @dev Calculate the amount of non vested tokens at a specific time.
   * @param grant TokenGrant The grant to be checked.
   * @param time uint64 The time to be checked
   * @return An uint representing the amount of non vested tokens of a specifc grant on the
   * passed time frame.
   */
  function nonVestedTokens(TokenGrant grant, uint64 time) private constant returns (uint256) {
    return grant.value.sub(vestedTokens(grant, time));
  }

  /**
   * @dev Calculate the date when the holder can trasfer all its tokens
   * @param holder address The address of the holder
   * @return An uint representing the date of the last transferable tokens.
   */
  function lastTokenIsTransferableDate(address holder) constant public returns (uint64 date) {
    date = uint64(now);
    uint256 grantIndex = grants[holder].length;
    for (uint256 i = 0; i < grantIndex; i++) {
      date = SafeMath.max64(grants[holder][i].vesting, date);
    }
  }
}

contract ApproveAndCallFallBack {
    function receiveApproval(address from, uint256 _amount, address _token, bytes _data);
}


contract TokenController {
    /// @notice Called when `_owner` sends ether to the MiniMe Token contract
    /// @param _owner The address that sent the ether to create tokens
    /// @return True if the ether is accepted, false if it throws
    function proxyPayment(address _owner) payable returns(bool);

    /// @notice Notifies the controller about a token transfer allowing the
    ///  controller to react if desired
    /// @param _from The origin of the transfer
    /// @param _to The destination of the transfer
    /// @param _amount The amount of the transfer
    /// @return False if the controller does not authorize the transfer
    function onTransfer(address _from, address _to, uint _amount) returns(bool);

    /// @notice Notifies the controller about an approval allowing the
    ///  controller to react if desired
    /// @param _owner The address that calls `approve()`
    /// @param _spender The spender in the `approve()` call
    /// @param _amount The amount in the `approve()` call
    /// @return False if the controller does not authorize the approval
    function onApprove(address _owner, address _spender, uint _amount)
        returns(bool);
}

contract District0xNetworkToken is MiniMeToken, VestedToken {
    function District0xNetworkToken(address _controller, address _tokenFactory)
        MiniMeToken(
            _tokenFactory,
            0x0,                        // no parent token
            0,                          // no snapshot block number from parent
            "district0x Network Token", // Token name
            18,                         // Decimals
            "DNT",                      // Symbol
            true                        // Enable transfers
            )
    {
        changeController(_controller);
        changeGrantsController(_controller);
    }
}

contract HasNoTokens is Ownable {

  District0xNetworkToken public district0xNetworkToken;

 /**
  * @dev Reject all ERC23 compatible tokens
  * @param from_ address The address that is transferring the tokens
  * @param value_ uint256 the amount of the specified token
  * @param data_ Bytes The data passed from the caller.
  */
  function tokenFallback(address from_, uint256 value_, bytes data_) external {
    throw;
  }

  function isTokenSaleToken(address tokenAddr) returns(bool);

  /**
   * @dev Reclaim all ERC20Basic compatible tokens
   * @param tokenAddr address The address of the token contract
   */
  function reclaimToken(address tokenAddr) external onlyOwner {
    require(!isTokenSaleToken(tokenAddr));
    ERC20Basic tokenInst = ERC20Basic(tokenAddr);
    uint256 balance = tokenInst.balanceOf(this);
    tokenInst.transfer(msg.sender, balance);
  }
}


contract District0xContribution is Pausable, HasNoTokens, TokenController {
    using SafeMath for uint;

    District0xNetworkToken public district0xNetworkToken;
    address public multisigWallet;                                      // Wallet that receives all sale funds
    address public founder1;                                            // Wallet of founder 1
    address public founder2;                                            // Wallet of founder 2
    address public earlySponsor;                                        // Wallet of early sponsor
    address[] public advisers;                                          // 4 Wallets of advisors

    uint public constant FOUNDER1_STAKE = 119000000 ether;              // 119M DNT
    uint public constant FOUNDER2_STAKE = 79000000 ether;               // 79M  DNT
    uint public constant EARLY_CONTRIBUTOR_STAKE = 5000000 ether;       // 5M   DNT
    uint public constant ADVISER_STAKE = 5000000 ether;                 // 5M   DNT
    uint public constant ADVISER_STAKE2 = 1000000 ether;                // 1M   DNT
    uint public constant COMMUNITY_ADVISERS_STAKE = 5000000 ether;      // 5M   DNT
    uint public constant CONTRIB_PERIOD1_STAKE = 600000000 ether;       // 600M DNT
    uint public constant CONTRIB_PERIOD2_STAKE = 140000000 ether;       // 140M DNT
    uint public constant CONTRIB_PERIOD3_STAKE = 40000000 ether;        // 40M  DNT

    uint public minContribAmount = 0.01 ether;                          // 0.01 ether
    uint public maxGasPrice = 50000000000;                              // 50 GWei

    uint public constant TEAM_VESTING_CLIFF = 24 weeks;                 // 6 months vesting cliff for founders and advisors, except community advisors
    uint public constant TEAM_VESTING_PERIOD = 96 weeks;                // 2 years vesting period for founders and advisors, except community advisors

    uint public constant EARLY_CONTRIBUTOR_VESTING_CLIFF = 12 weeks;    // 3 months vesting cliff for early sponsor
    uint public constant EARLY_CONTRIBUTOR_VESTING_PERIOD = 24 weeks;   // 6 months vesting cliff for early sponsor

    bool public tokenTransfersEnabled = false;                          // DNT token transfers will be enabled manually
                                                                        // after first contribution period
                                                                        // Can't be disabled back
    struct Contributor {
        uint amount;                        // Amount of ETH contributed by an address in given contribution period
        bool isCompensated;                 // Whether this contributor received DNT token for ETH contribution
        uint amountCompensated;             // Amount of DNT received. Not really needed to store,
                                            // but stored for accounting and security purposes
    }

    uint public softCapAmount;                                 // Soft cap of contribution period in wei
    uint public afterSoftCapDuration;                          // Number of seconds to the end of sale from the moment of reaching soft cap (unless reaching hardcap)
    uint public hardCapAmount;                                 // When reached this amount of wei, the contribution will end instantly
    uint public startTime;                                     // Start time of contribution period in UNIX time
    uint public endTime;                                       // End time of contribution period in UNIX time
    bool public isEnabled;                                     // If contribution period was enabled by multisignature
    bool public softCapReached;                                // If soft cap was reached
    bool public hardCapReached;                                // If hard cap was reached
    uint public totalContributed;                              // Total amount of ETH contributed in given period
    address[] public contributorsKeys;                         // Addresses of all contributors in given contribution period
    mapping (address => Contributor) public contributors;

    event onContribution(uint totalContributed, address indexed contributor, uint amount,
        uint contributorsCount);
    event onSoftCapReached(uint endTime);
    event onHardCapReached(uint endTime);
    event onCompensated(address indexed contributor, uint amount);

    modifier onlyMultisig() {
        require(multisigWallet == msg.sender);
        _;
    }

    function District0xContribution(
        address _multisigWallet,
        address _founder1,
        address _founder2,
        address _earlySponsor,
        address[] _advisers
    ) {
        require(_advisers.length == 5);
        multisigWallet = _multisigWallet;
        founder1 = _founder1;
        founder2 = _founder2;
        earlySponsor = _earlySponsor;
        advisers = _advisers;
    }

    // @notice Returns true if contribution period is currently running
    function isContribPeriodRunning() constant returns (bool) {
        return !hardCapReached &&
               isEnabled &&
               startTime <= now &&
               endTime > now;
    }

    function contribute()
        payable
        stopInEmergency
    {
        contributeWithAddress(msg.sender);
    }

    // @notice Function to participate in contribution period
    //  Amounts from the same address should be added up
    //  If soft or hard cap is reached, end time should be modified
    //  Funds should be transferred into multisig wallet
    // @param contributor Address that will receive DNT token
    function contributeWithAddress(address contributor)
        payable
        stopInEmergency
    {
        require(tx.gasprice <= maxGasPrice);
        require(msg.value >= minContribAmount);
        require(isContribPeriodRunning());

        uint contribValue = msg.value;
        uint excessContribValue = 0;

        uint oldTotalContributed = totalContributed;

        totalContributed = oldTotalContributed.add(contribValue);

        uint newTotalContributed = totalContributed;

        // Soft cap was reached
        if (newTotalContributed >= softCapAmount &&
            oldTotalContributed < softCapAmount)
        {
            softCapReached = true;
            endTime = afterSoftCapDuration.add(now);
            onSoftCapReached(endTime);
        }
        // Hard cap was reached
        if (newTotalContributed >= hardCapAmount &&
            oldTotalContributed < hardCapAmount)
        {
            hardCapReached = true;
            endTime = now;
            onHardCapReached(endTime);

            // Everything above hard cap will be sent back to contributor
            excessContribValue = newTotalContributed.sub(hardCapAmount);
            contribValue = contribValue.sub(excessContribValue);

            totalContributed = hardCapAmount;
        }

        if (contributors[contributor].amount == 0) {
            contributorsKeys.push(contributor);
        }

        contributors[contributor].amount = contributors[contributor].amount.add(contribValue);

        multisigWallet.transfer(contribValue);
        if (excessContribValue > 0) {
            msg.sender.transfer(excessContribValue);
        }
        onContribution(newTotalContributed, contributor, contribValue, contributorsKeys.length);
    }

    // @notice This method is called by owner after contribution period ends, to distribute DNT in proportional manner
    //  Each contributor should receive DNT just once even if this method is called multiple times
    //  In case of many contributors must be able to compensate contributors in paginational way, otherwise might
    //  run out of gas if wanted to compensate all on one method call. Therefore parameters offset and limit
    // @param periodIndex Index of contribution period (0-2)
    // @param offset Number of first contributors to skip.
    // @param limit Max number of contributors compensated on this call
    function compensateContributors(uint offset, uint limit)
        onlyOwner
    {
        require(isEnabled);
        require(endTime < now);

        uint i = offset;
        uint compensatedCount = 0;
        uint contributorsCount = contributorsKeys.length;

        uint ratio = CONTRIB_PERIOD1_STAKE
            .mul(1000000000000000000)
            .div(totalContributed);

        while (i < contributorsCount && compensatedCount < limit) {
            address contributorAddress = contributorsKeys[i];
            if (!contributors[contributorAddress].isCompensated) {
                uint amountContributed = contributors[contributorAddress].amount;
                contributors[contributorAddress].isCompensated = true;

                contributors[contributorAddress].amountCompensated =
                    amountContributed.mul(ratio).div(1000000000000000000);

                district0xNetworkToken.transfer(contributorAddress, contributors[contributorAddress].amountCompensated);
                onCompensated(contributorAddress, contributors[contributorAddress].amountCompensated);

                compensatedCount++;
            }
            i++;
        }
    }

    // @notice Method for setting up contribution period
    //  Only owner should be able to execute
    //  Setting first contribution period sets up vesting for founders & advisors
    //  Contribution period should still not be enabled after calling this method
    // @param softCapAmount Soft Cap in wei
    // @param afterSoftCapDuration Number of seconds till the end of sale in the moment of reaching soft cap (unless reaching hard cap)
    // @param hardCapAmount Hard Cap in wei
    // @param startTime Contribution start time in UNIX time
    // @param endTime Contribution end time in UNIX time
    function setContribPeriod(
        uint _softCapAmount,
        uint _afterSoftCapDuration,
        uint _hardCapAmount,
        uint _startTime,
        uint _endTime
    )
        onlyOwner
    {
        require(_softCapAmount > 0);
        require(_hardCapAmount > _softCapAmount);
        require(_afterSoftCapDuration > 0);
        require(_startTime > now);
        require(_endTime > _startTime);
        require(!isEnabled);

        softCapAmount = _softCapAmount;
        afterSoftCapDuration = _afterSoftCapDuration;
        hardCapAmount = _hardCapAmount;
        startTime = _startTime;
        endTime = _endTime;

        district0xNetworkToken.revokeAllTokenGrants(founder1);
        district0xNetworkToken.revokeAllTokenGrants(founder2);
        district0xNetworkToken.revokeAllTokenGrants(earlySponsor);

        for (uint j = 0; j < advisers.length; j++) {
            district0xNetworkToken.revokeAllTokenGrants(advisers[j]);
        }

        uint64 vestingDate = uint64(startTime.add(TEAM_VESTING_PERIOD));
        uint64 cliffDate = uint64(startTime.add(TEAM_VESTING_CLIFF));
        uint64 earlyContribVestingDate = uint64(startTime.add(EARLY_CONTRIBUTOR_VESTING_PERIOD));
        uint64 earlyContribCliffDate = uint64(startTime.add(EARLY_CONTRIBUTOR_VESTING_CLIFF));
        uint64 startDate = uint64(startTime);

        district0xNetworkToken.grantVestedTokens(founder1, FOUNDER1_STAKE, startDate, cliffDate, vestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(founder2, FOUNDER2_STAKE, startDate, cliffDate, vestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(earlySponsor, EARLY_CONTRIBUTOR_STAKE, startDate, earlyContribCliffDate, earlyContribVestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(advisers[0], ADVISER_STAKE, startDate, cliffDate, vestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(advisers[1], ADVISER_STAKE, startDate, cliffDate, vestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(advisers[2], ADVISER_STAKE2, startDate, cliffDate, vestingDate, true, false);
        district0xNetworkToken.grantVestedTokens(advisers[3], ADVISER_STAKE2, startDate, cliffDate, vestingDate, true, false);

        // Community advisors stake has no vesting, but we set it up this way, so we can revoke it in case of
        // re-setting up contribution period
        district0xNetworkToken.grantVestedTokens(advisers[4], COMMUNITY_ADVISERS_STAKE, startDate, startDate, startDate, true, false);
    }

    // @notice Enables contribution period
    //  Must be executed by multisignature
    function enableContribPeriod()
        onlyMultisig
    {
        require(startTime > now);
        isEnabled = true;
    }

    // @notice Sets new min. contribution amount
    //  Only owner can execute
    //  Cannot be executed while contribution period is running
    // @param _minContribAmount new min. amount
    function setMinContribAmount(uint _minContribAmount)
        onlyOwner
    {
        require(_minContribAmount > 0);
        require(startTime > now);
        minContribAmount = _minContribAmount;
    }

    // @notice Sets new max gas price for contribution
    //  Only owner can execute
    //  Cannot be executed while contribution period is running
    // @param _minContribAmount new min. amount
    function setMaxGasPrice(uint _maxGasPrice)
        onlyOwner
    {
        require(_maxGasPrice > 0);
        require(startTime > now);
        maxGasPrice = _maxGasPrice;
    }

    // @notice Sets District0xNetworkToken contract
    //  Generates all DNT tokens and assigns them to this contract
    //  If token contract has already generated tokens, do not generate again
    // @param _district0xNetworkToken District0xNetworkToken address
    function setDistrict0xNetworkToken(address _district0xNetworkToken)
        onlyOwner
    {
        require(_district0xNetworkToken != 0x0);
        require(!isEnabled);
        district0xNetworkToken = District0xNetworkToken(_district0xNetworkToken);
        if (district0xNetworkToken.totalSupply() == 0) {
            district0xNetworkToken.generateTokens(this, FOUNDER1_STAKE
                .add(FOUNDER2_STAKE)
                .add(EARLY_CONTRIBUTOR_STAKE)
                .add(ADVISER_STAKE.mul(2))
                .add(ADVISER_STAKE2.mul(2))
                .add(COMMUNITY_ADVISERS_STAKE)
                .add(CONTRIB_PERIOD1_STAKE));

            district0xNetworkToken.generateTokens(multisigWallet, CONTRIB_PERIOD2_STAKE
                .add(CONTRIB_PERIOD3_STAKE));
        }
    }

    // @notice Enables transfers of DNT
    //  Will be executed after first contribution period by owner
    function enableDistrict0xNetworkTokenTransfers()
        onlyOwner
    {
        require(endTime < now);
        tokenTransfersEnabled = true;
    }

    // @notice Method to claim tokens accidentally sent to a DNT contract
    //  Only multisig wallet can execute
    // @param _token Address of claimed ERC20 Token
    function claimTokensFromTokenDistrict0xNetworkToken(address _token)
        onlyMultisig
    {
        district0xNetworkToken.claimTokens(_token, multisigWallet);
    }

    // @notice Kill method should not really be needed, but just in case
    function kill(address _to) onlyMultisig external {
        suicide(_to);
    }

    function()
        payable
        stopInEmergency
    {
        contributeWithAddress(msg.sender);
    }

    // MiniMe Controller default settings for allowing token transfers.
    function proxyPayment(address _owner) payable public returns (bool) {
        throw;
    }

    // Before transfers are enabled for everyone, only this contract is allowed to distribute DNT
    function onTransfer(address _from, address _to, uint _amount) public returns (bool) {
        return tokenTransfersEnabled || _from == address(this) || _to == address(this);
    }

    function onApprove(address _owner, address _spender, uint _amount) public returns (bool) {
        return tokenTransfersEnabled;
    }

    function isTokenSaleToken(address tokenAddr) returns(bool) {
        return district0xNetworkToken == tokenAddr;
    }

    /*
     Following constant methods are used for tests and contribution web app
     They don't impact logic of contribution contract, therefor DOES NOT NEED TO BE AUDITED
     */

    // Used by contribution front-end to obtain contribution period properties
    function getContribPeriod()
        constant
        returns (bool[3] boolValues, uint[8] uintValues)
    {
        boolValues[0] = isEnabled;
        boolValues[1] = softCapReached;
        boolValues[2] = hardCapReached;

        uintValues[0] = softCapAmount;
        uintValues[1] = afterSoftCapDuration;
        uintValues[2] = hardCapAmount;
        uintValues[3] = startTime;
        uintValues[4] = endTime;
        uintValues[5] = totalContributed;
        uintValues[6] = contributorsKeys.length;
        uintValues[7] = CONTRIB_PERIOD1_STAKE;

        return (boolValues, uintValues);
    }

    // Used by contribution front-end to obtain contribution contract properties
    function getConfiguration()
        constant
        returns (bool, address, address, address, address, address[] _advisers, bool, uint)
    {
        _advisers = new address[](advisers.length);
        for (uint i = 0; i < advisers.length; i++) {
            _advisers[i] = advisers[i];
        }
        return (stopped, multisigWallet, founder1, founder2, earlySponsor, _advisers, tokenTransfersEnabled,
            maxGasPrice);
    }

    // Used by contribution front-end to obtain contributor's properties
    function getContributor(address contributorAddress)
        constant
        returns(uint, bool, uint)
    {
        Contributor contributor = contributors[contributorAddress];
        return (contributor.amount, contributor.isCompensated, contributor.amountCompensated);
    }

    // Function to verify if all contributors were compensated
    function getUncompensatedContributors(uint offset, uint limit)
        constant
        returns (uint[] contributorIndexes)
    {
        uint contributorsCount = contributorsKeys.length;

        if (limit == 0) {
            limit = contributorsCount;
        }

        uint i = offset;
        uint resultsCount = 0;
        uint[] memory _contributorIndexes = new uint[](limit);

        while (i < contributorsCount && resultsCount < limit) {
            if (!contributors[contributorsKeys[i]].isCompensated) {
                _contributorIndexes[resultsCount] = i;
                resultsCount++;
            }
            i++;
        }

        contributorIndexes = new uint[](resultsCount);
        for (i = 0; i < resultsCount; i++) {
            contributorIndexes[i] = _contributorIndexes[i];
        }
        return contributorIndexes;
    }

    function getNow()
        constant
        returns(uint)
    {
        return now;
    }
}

    Contract ABI  
[{"constant":true,"inputs":[{"name":"_holder","type":"address"}],"name":"tokenGrantsCount","outputs":[{"name":"index","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_amount","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"creationBlock","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"uint256"}],"name":"grants","outputs":[{"name":"granter","type":"address"},{"name":"value","type":"uint256"},{"name":"cliff","type":"uint64"},{"name":"vesting","type":"uint64"},{"name":"start","type":"uint64"},{"name":"revokable","type":"bool"},{"name":"burnsOnRevoke","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_newController","type":"address"}],"name":"changeController","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_blockNumber","type":"uint256"}],"name":"balanceOfAt","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_holder","type":"address"},{"name":"_grantId","type":"uint256"}],"name":"tokenGrant","outputs":[{"name":"granter","type":"address"},{"name":"value","type":"uint256"},{"name":"vested","type":"uint256"},{"name":"start","type":"uint64"},{"name":"cliff","type":"uint64"},{"name":"vesting","type":"uint64"},{"name":"revokable","type":"bool"},{"name":"burnsOnRevoke","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_cloneTokenName","type":"string"},{"name":"_cloneDecimalUnits","type":"uint8"},{"name":"_cloneTokenSymbol","type":"string"},{"name":"_snapshotBlock","type":"uint256"},{"name":"_transfersEnabled","type":"bool"}],"name":"createCloneToken","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"_claimer","type":"address"}],"name":"claimTokens","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"holder","type":"address"}],"name":"lastTokenIsTransferableDate","outputs":[{"name":"date","type":"uint64"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"parentToken","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_owner","type":"address"},{"name":"_amount","type":"uint256"}],"name":"generateTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"grantsController","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_start","type":"uint64"},{"name":"_cliff","type":"uint64"},{"name":"_vesting","type":"uint64"},{"name":"_revokable","type":"bool"},{"name":"_burnsOnRevoke","type":"bool"}],"name":"grantVestedTokens","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_blockNumber","type":"uint256"}],"name":"totalSupplyAt","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"transfersEnabled","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"parentSnapShotBlock","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_amount","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_holder","type":"address"}],"name":"revokeAllTokenGrants","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"holder","type":"address"},{"name":"time","type":"uint64"}],"name":"transferableTokens","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_owner","type":"address"},{"name":"_amount","type":"uint256"}],"name":"destroyTokens","outputs":[{"name":"","type":"bool"}],"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":"tokens","type":"uint256"},{"name":"time","type":"uint256"},{"name":"start","type":"uint256"},{"name":"cliff","type":"uint256"},{"name":"vesting","type":"uint256"}],"name":"calculateVestedTokens","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_newController","type":"address"}],"name":"changeGrantsController","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"tokenFactory","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_holder","type":"address"},{"name":"_grantId","type":"uint256"}],"name":"revokeTokenGrant","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_transfersEnabled","type":"bool"}],"name":"enableTransfers","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"controller","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"inputs":[{"name":"_controller","type":"address"},{"name":"_tokenFactory","type":"address"}],"payable":false,"type":"constructor"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"grantId","type":"uint256"}],"name":"NewTokenGrant","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_token","type":"address"},{"indexed":true,"name":"_claimer","type":"address"},{"indexed":false,"name":"_amount","type":"uint256"}],"name":"ClaimedTokens","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_from","type":"address"},{"indexed":true,"name":"_to","type":"address"},{"indexed":false,"name":"_amount","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_cloneToken","type":"address"},{"indexed":false,"name":"_snapshotBlock","type":"uint256"}],"name":"NewCloneToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_owner","type":"address"},{"indexed":true,"name":"_spender","type":"address"},{"indexed":false,"name":"_amount","type":"uint256"}],"name":"Approval","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)
000000000000000000000000f8094e15c897518b5ac5287d7070ca5850efc6ff000000000000000000000000a7dd95d9978dde794eae5233889f1ffebcdc9914

-----Decoded View---------------
Found 2 constructor arguments :
Arg [0] : 000000000000000000000000f8094e15c897518b5ac5287d7070ca5850efc6ff
Arg [1] : 000000000000000000000000a7dd95d9978dde794eae5233889f1ffebcdc9914


   Swarm Source:
bzzr://6492bc9b84a3874bea420a5ff1ecb30e8bb7762b7638846c630dfb35febcb288

 

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Block Age UncleNumber Difficulty GasUsed Reward
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