Latest 25 transactions from a total of 8520 transactions

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0x79c6aa5e21b4c4c4218347aa2c9dc33f2a2995beff6ba847c3ca323532f153e124 mins ago0x6076dc93f53e429aadce69a4373c6efc1f843f71  IN   SpectreUtilityToken0 Ether0.0006065994
0xbfc775d65b1cc7cdd9a5421f17973390f575cf1f327341fff0c0faaf13ce4b0e51 mins ago0xff724a294ed90094fb5e145c1b6f1f674caa0e4f  IN   SpectreUtilityToken0 Ether0.000857055
0x46a6028844559a19543f31374ab1f32d2c2ceb8a966900e1a5d4f056543db4ef53 mins ago0x5be78822bb773112969aac90bbfc837fae8d2ac7  IN   SpectreUtilityToken0 Ether0.004266419
0x265fe1173e51b24d4016de9588108b2f22ea8964d90cc872582c26252977cef658 mins ago0x5be78822bb773112969aac90bbfc837fae8d2ac7  IN   SpectreUtilityToken0 Ether0.0041
0xa8ad776dd33155534a8715b66cf54ea03bf6c090aca963e2286eab9fe406320459 mins ago0x5be78822bb773112969aac90bbfc837fae8d2ac7  IN   SpectreUtilityToken0 Ether0.00246
0x08052443ed881673698776bc24c522729c381a8b71b275225783e12de5924c4b1 hr 3 mins ago0x5be78822bb773112969aac90bbfc837fae8d2ac7  IN   SpectreUtilityToken0 Ether0.00123
0x2ad471c0ab0513da5592e1c3365ac8e24ead815286192ac01b14e3783c2bc49a2 hrs 46 mins ago0x1c3df08a8ec8450d8348bdf0c43192cfc5ddd546  IN   SpectreUtilityToken0 Ether0.00060498
0x1f0234bedc3127254ab8eef1f5b39aa5eff4c5b8bbd263ccce57e3a6aa8796c510 hrs 44 mins ago0x3dee4a4e076e8d82859d241db0baf46f112cfa23  IN   SpectreUtilityToken0 Ether0.000642915
0x4ceff53b339adb80e265128c2b62dadaddae36affde1683f404b721e163c99f411 hrs 7 mins ago0xce9fa39cc3ee849d13affe6657cbc7c24d21123a  IN   SpectreUtilityToken0 Ether0.000201404
0x81310b23e7b3f795ee07b476f420787afff15ba5636a6fa8bb9eedc41472c23411 hrs 10 mins ago0x40743fcc92a2b4aa250246a76becb2fac40a9472  IN   SpectreUtilityToken0 Ether0.004269043
0x1fad7f664fe751d584d4fbf3e792fc8098d84f6203580f1cd735921912b003d716 hrs 38 mins ago0xf0617aea99a42312454169dde7544dc3b3aca0aa  IN   SpectreUtilityToken0 Ether0.00146952
0x0af7cd2d9b61807a2e88c1ea2e25d991e0d2abbb8150316ca3f96fd9b8f6bb6d19 hrs 17 mins ago0x871d5801d22f50ce3b9945882bd00ac78a4b9401  IN   SpectreUtilityToken0 Ether0.00083452
0xfa811b4b893a2bb9609037ca9ea9d107d042d642e5f7f1ed604a22f714f6d41020 hrs 25 mins ago0x9096410692868ea33f77ff1ca3ae3d9948faf82c  IN   SpectreUtilityToken0 Ether0.0006065994
0xad042905e1ed90cd209b07aeb56d5be45fcf7944aa6df49f32134ddc8ae46c2620 hrs 29 mins ago0x71566ccb2c88cadff2990d3f4f8c948f38c40f0a  IN   SpectreUtilityToken0 Ether0.001260375
0xd1be5705567cd69af8040f84cc73fc218269aab59dfece4111b2c1b926712c011 day 2 hrs agoBibox  IN   SpectreUtilityToken0 Ether0.002294525
0x1949a7863110fcd70ece01b224c73d8bc972450f12f072444e35416b0250174c1 day 6 hrs agoBibox  IN   SpectreUtilityToken0 Ether0.002296125
0xf5f9a345d9227ecff944e220b27bf865482e74fc9d4cca27df175825a3e93a861 day 7 hrs ago0xb0f1008417770092aa5b7f02a94eab93e516f295  IN   SpectreUtilityToken0 Ether0.000729309
0x3c4e0844cc469eccf690581834faa7a388364694864c5e602c7a19b54bf07f8d1 day 14 hrs ago0x60edc5f9156a930f4af3fe990431b66cb383d9e3  IN   SpectreUtilityToken0 Ether0.003763021
0x321d3d6487faf5994c0d0ed356b899985ea9e0adad7f53a83d37228c5d7c89e41 day 20 hrs ago0x4ed7ba5ba59e2ff30739dfaf4cce482f2df33e13  IN   SpectreUtilityToken0 Ether0.00251755
0xa8f05f78001c3d51671bb37167f09e11ddf286051eac183581cad432a4fd55341 day 20 hrs ago0xf1c14fd24510fed607678df763bfc830e0dfc05c  IN   SpectreUtilityToken0 Ether0.00183562
0xf5b311b9e4a5e10fabcb20d0a26ad3ca18c9b1b30685783f904fa8e1e0c66a1a2 days 4 hrs ago0x6c8e4d6f376336871821dbe369bfe444fdd1fc99  IN   SpectreUtilityToken0 Ether0.00060498
0x26612897eb60451dc820b40d74aba678c7d32146afabe1fec489c2888bb10af33 days 7 hrs ago0xdb99bcd1d8c6507c7b5f143dd4c7900981d3468f  IN   SpectreUtilityToken0 Ether0.000201404
0x5345d561ca85931a2f715d4dccc3833fbe329493b542d1cca193c8078367d3643 days 7 hrs ago0xd9e7875bd631e04b4cdb4a131fbc33d2c9c58445  IN   SpectreUtilityToken0 Ether0.004373166
0x3e3bcae1e02f9b4e7727b19556a2ea4e5a21d30cd6a8f2372997ab30a9152d133 days 18 hrs agoBibox  IN   SpectreUtilityToken0 Ether0.002294525
0xfcca50feadbac2f641dfc62738eb845ab2e780d58c8332e85e69307381c0218c3 days 23 hrs agoBibox  IN   SpectreUtilityToken0 Ether0.002296125
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Warning: The Compiled Contract might be susceptible to ExpExponentCleanup (medium/high-severity), EventStructWrongData (very low-severity), NestedArrayFunctionCallDecoder (medium-severity) SolidityCompiler Bugs.

Contract Source Code Verified (Exact Match)
Contract Name: SpectreUtilityToken
Compiler Text: v0.4.18+commit.9cf6e910
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts

pragma solidity ^0.4.15;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {
  function mul(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal constant returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal constant returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal constant returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;


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


  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  function Ownable() {
    owner = msg.sender;
  }


  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }


  /**
   * @dev Allows the current owner to transfer control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function transferOwnership(address newOwner) onlyOwner public {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

}
/*
 * Contract that is working with ERC223 tokens
 * This is an implementation of ContractReceiver provided here:
 * https://github.com/Dexaran/ERC223-token-standard/blob/Recommended/Receiver_Interface.sol
 */

 contract ContractReceiver {

    function tokenFallback(address _from, uint _value, bytes _data);

}
/*
    Copyright 2016, Jordi Baylina

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/// @title MiniMeToken Contract
/// @author Jordi Baylina
/// @dev This token contract's goal is to make it easy for anyone to clone this
///  token using the token distribution at a given block, this will allow DAO's
///  and DApps to upgrade their features in a decentralized manner without
///  affecting the original token
/// @dev It is ERC20 compliant, but still needs to under go further testing.


/// @dev The token controller contract must implement these functions
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 Controlled {
    /// @notice The address of the controller is the only address that can call
    ///  a function with this modifier
    modifier onlyController { require(msg.sender == controller); _; }

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

/// @dev The actual token contract, the default controller is the msg.sender
///  that deploys the contract, so usually this token will be deployed by a
///  token controller contract, which Giveth will call a "Campaign"
contract MiniMeToken is Controlled {

    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) {
        require(transfersEnabled);
        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) {
            require(transfersEnabled);

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

           require(parentSnapShotBlock < block.number);

           // Do not allow transfer to 0x0 or the token contract itself
           require((_to != 0) && (_to != address(this)));

           // 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)) {
               require(TokenController(controller).onTransfer(_from, _to, _amount));
           }

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

           // Then update the balance array with the new value for the address
           //  receiving the tokens
           var previousBalanceTo = balanceOfAt(_to, block.number);
           require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
           updateValueAtNow(balances[_to], previousBalanceTo + _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) {
        require(transfersEnabled);

        // 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
        require((_amount == 0) || (allowed[msg.sender][_spender] == 0));

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

        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) {
        require(approve(_spender, _amount));

        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 = totalSupply();
        require(curTotalSupply + _amount >= curTotalSupply); // Check for overflow
        uint previousBalanceTo = balanceOf(_owner);
        require(previousBalanceTo + _amount >= previousBalanceTo); // Check for overflow
        updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
        updateValueAtNow(balances[_owner], previousBalanceTo + _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 = totalSupply();
        require(curTotalSupply >= _amount);
        uint previousBalanceFrom = balanceOf(_owner);
        require(previousBalanceFrom >= _amount);
        updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
        updateValueAtNow(balances[_owner], previousBalanceFrom - _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 storage newCheckPoint = checkpoints[ checkpoints.length++ ];
               newCheckPoint.fromBlock =  uint128(block.number);
               newCheckPoint.value = uint128(_value);
           } else {
               Checkpoint storage 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 {
        require(isContract(controller));
        require(TokenController(controller).proxyPayment.value(msg.value)(msg.sender));
    }

//////////
// 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.
    function claimTokens(address _token) onlyController {
        if (_token == 0x0) {
            controller.transfer(this.balance);
            return;
        }

        MiniMeToken token = MiniMeToken(_token);
        uint balance = token.balanceOf(this);
        token.transfer(controller, balance);
        ClaimedTokens(_token, controller, balance);
    }

////////////////
// Events
////////////////
    event ClaimedTokens(address indexed _token, address indexed _controller, 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 TokenBurner {
    function burn(address , uint )
    returns (bool result) {
        return false;
    }
}

contract SpectreToken is MiniMeToken, Ownable, ContractReceiver {

    event WalletAddressesSet(address _spectreTeam, address _managementLocked, address _optionPool);

    TokenBurner public tokenBurner;

    //Spectre addresses
    address public spectreTeam;
    address public managementLocked;
    address public optionPool;
    bool public walletAddressesSet;

    //In percentages of tokens allocated to Spectre
    uint256 public SPECTRE_BOUNTY_ADVISORY_DEV_TEAM_ALLOC = 42;
    uint256 public MANAGEMENT_LOCKED_ALLOC = 18;
    uint256 public OPTION_POOL_ALLOC = 40;

    //Lock up periods
    uint256 public LOCK_START_TIME = 1512896400;
    uint256 public MANAGEMENT_LOCKED_PERIOD = LOCK_START_TIME + 180 days;
    uint256 public OPTION_POOL_PERIOD = LOCK_START_TIME + 365 days;
    mapping (address => uint) public lockedBalances;

    function setTokenBurner(address _tokenBurner) onlyOwner public {
      tokenBurner = TokenBurner(_tokenBurner);
    }

    function setWalletAddresses(address _spectreTeam, address _managementLocked, address _optionPool) onlyOwner public {
      require(!walletAddressesSet);
      require(_spectreTeam != address(0));
      require(_managementLocked != address(0));
      require(_optionPool != address(0));
      spectreTeam = _spectreTeam;
      managementLocked = _managementLocked;
      optionPool = _optionPool;
      walletAddressesSet = true;
      WalletAddressesSet(spectreTeam, managementLocked, optionPool);
    }

    // allows a token holder to burn tokens
    // requires tokenBurner to be set to a valid contract address
    // tokenBurner can take any appropriate action
    function burn(uint256 _amount) public {
      uint curTotalSupply = totalSupply();
      require(curTotalSupply >= _amount);
      uint previousBalanceFrom = balanceOf(msg.sender);
      require(previousBalanceFrom >= _amount);
      updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
      updateValueAtNow(balances[msg.sender], previousBalanceFrom - _amount);
      assert(tokenBurner.burn(msg.sender, _amount));
      Transfer(msg.sender, 0, _amount);
    }

    //@notice function to accept incoming token transfers from SPECT
    //@notice _from - address that is transferring tokens
    //@notice _value - amount of tokens being transferred
    //@notice _data - ignored - no data is expected
    function tokenFallback(address _from, uint _value, bytes _data) public {
      require(walletAddressesSet);
      //First we generate tokens for user that is transferring
      generateTokens(_from, _value);
      //Then we generate Spectre team tokens
      generateSpectreTokens(_value);
    }

    function generateSpectreTokens(uint256 _value) internal {
      //Calculate amounts for each Spectre Wallet
      uint256 managementLockedAlloc = SafeMath.div(SafeMath.mul(_value, percent(MANAGEMENT_LOCKED_ALLOC)), percent(100));
      uint256 optionPoolAlloc = SafeMath.div(SafeMath.mul(_value, percent(OPTION_POOL_ALLOC)), percent(100));
      //Account for any rounding errors by using subtraction rather than allocation
      //spectreTeam allocation is for bounty, dev, and advisory allocations
      //quantity should correspond to SPECTRE_BOUNTY_ADVISORY_DEV_TEAM_ALLOC percentage
      uint256 spectreTeamAlloc = SafeMath.sub(_value, SafeMath.add(managementLockedAlloc, optionPoolAlloc));
      //Assert invariant
      assert(SafeMath.add(SafeMath.add(managementLockedAlloc, optionPoolAlloc), spectreTeamAlloc) == _value);
      //Generate team tokens
      generateTokens(spectreTeam, spectreTeamAlloc);
      generateTokens(managementLocked, managementLockedAlloc);
      generateTokens(optionPool, optionPoolAlloc);
      //Lock balances - no locks for spectreTeam
      lockedBalances[managementLocked] = SafeMath.add(managementLockedAlloc, lockedBalances[managementLocked]);
      lockedBalances[optionPool] = SafeMath.add(optionPoolAlloc, lockedBalances[optionPool]);
    }

    // Check token locks before transferring
    function transfer(address _to, uint _value) returns (bool success) {
      require(checkLockedBalance(msg.sender, _value));
      require(super.transfer(_to, _value));
      return true;
    }

    // Override this to enforce locking periods
    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
      require(checkLockedBalance(_from, _value));
      require(super.transferFrom(_from, _to, _value));
      return true;
    }

    //Check whether transfer is valid for locked tokens
    function checkLockedBalance(address _holder, uint256 _value) public constant returns (bool success) {
      if ((_holder != managementLocked) && (_holder != optionPool)) {
        return true;
      }
      if ((_holder == managementLocked) && (getNow() > MANAGEMENT_LOCKED_PERIOD)) {
        return true;
      }
      if ((_holder == optionPool) && (getNow() > OPTION_POOL_PERIOD)) {
        return true;
      }
      return (SafeMath.sub(balanceOf(_holder), _value) >= lockedBalances[_holder]);
    }

    function percent(uint256 p) constant internal returns (uint256) {
      return SafeMath.mul(p, 10**16);
    }

    function getNow() internal constant returns (uint256) {
      return now;
    }
}

contract SpectreUtilityToken is SpectreToken {

    function SpectreUtilityToken(address _tokenFactory)
      MiniMeToken(
        _tokenFactory,
        0x0,                     // no parent token
        0,                       // no snapshot block number from parent
        "Spectre.ai U-Token",           // Token name
        18,                       // Decimals
        "SXUT",                   // Symbol
        true                    // Enable transfers
      )
    {}

}

    Contract ABI  
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,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"managementLocked","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_tokenBurner","type":"address"}],"name":"setTokenBurner","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"SPECTRE_BOUNTY_ADVISORY_DEV_TEAM_ALLOC","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"transfersEnabled","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"tokenFallback","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"parentSnapShotBlock","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","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,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_owner","type":"address"},{"name":"_amount","type":"uint256"}],"name":"destroyTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_token","type":"address"}],"name":"claimTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"tokenFactory","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_transfersEnabled","type":"bool"}],"name":"enableTransfers","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"controller","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spectreTeam","type":"address"},{"name":"_managementLocked","type":"address"},{"name":"_optionPool","type":"address"}],"name":"setWalletAddresses","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_tokenFactory","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"_spectreTeam","type":"address"},{"indexed":false,"name":"_managementLocked","type":"address"},{"indexed":false,"name":"_optionPool","type":"address"}],"name":"WalletAddressesSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"_token","type":"address"},{"indexed":true,"name":"_controller","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)
00000000000000000000000020867f59e8ccb2fa8fadfbfd4175aca4a42d0834

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000020867f59e8ccb2fa8fadfbfd4175aca4a42d0834


   Swarm Source:
bzzr://f275a0679f1830d31cdb38876d04430256dcec748dd09d3c6012f2925e000565

 

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