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• library SafeMath
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function add(uint256 a, uint256 b)
•    - function mod(uint256 a, uint256 b)
• interface IERC20
•    - function totalSupply()
•    - function balanceOf(address who)
•    - function allowance(address owner, add ...
•    - function transfer(address to, uint256 ...
•    - function approve(address spender, uin ...
•    - function transferFrom(address from, a ...
• library SafeERC20
•    - function safeTransfer(
•    - function safeTransferFrom(
•    - function safeApprove(
•    - function safeIncreaseAllowance(
•    - function safeDecreaseAllowance(
•  contract Ownable
•    - function owner()
•    - function isOwner()
•    - function renounceOwnership()
•    - function transferOwnership(address ne ...
•    - function _transferOwnership(address n ...
•  contract Vesting is Ownable *
•    - function addBeneficiary(
•    - function removeBeneficiary(address be ...
•    - function withdraw(uint256 amount)
•    - function release()
•    - function check()
•    - function _release(address beneficiary ...

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/**
 *Submitted for verification at Etherscan.io on 2018-12-11
*/

pragma solidity 0.4.25;

// File: openzeppelin-solidity/contracts/math/SafeMath.sol

/**
 * @title SafeMath
 * @dev Math operations with safety checks that revert on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, reverts on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (a == 0) {
      return 0;
    }

    uint256 c = a * b;
    require(c / a == b);

    return c;
  }

  /**
  * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b > 0); // Solidity only automatically asserts 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;
  }

  /**
  * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a);
    uint256 c = a - b;

    return c;
  }

  /**
  * @dev Adds two numbers, reverts on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a);

    return c;
  }

  /**
  * @dev Divides two numbers and returns the remainder (unsigned integer modulo),
  * reverts when dividing by zero.
  */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b != 0);
    return a % b;
  }
}

// File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
  function totalSupply() external view returns (uint256);

  function balanceOf(address who) external view returns (uint256);

  function allowance(address owner, address spender)
    external view returns (uint256);

  function transfer(address to, uint256 value) external returns (bool);

  function approve(address spender, uint256 value)
    external returns (bool);

  function transferFrom(address from, address to, uint256 value)
    external returns (bool);

  event Transfer(
    address indexed from,
    address indexed to,
    uint256 value
  );

  event Approval(
    address indexed owner,
    address indexed spender,
    uint256 value
  );
}

// File: openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure.
 * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {

  using SafeMath for uint256;

  function safeTransfer(
    IERC20 token,
    address to,
    uint256 value
  )
    internal
  {
    require(token.transfer(to, value));
  }

  function safeTransferFrom(
    IERC20 token,
    address from,
    address to,
    uint256 value
  )
    internal
  {
    require(token.transferFrom(from, to, value));
  }

  function safeApprove(
    IERC20 token,
    address spender,
    uint256 value
  )
    internal
  {
    // safeApprove should only be called when setting an initial allowance, 
    // or when resetting it to zero. To increase and decrease it, use 
    // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
    require((value == 0) || (token.allowance(msg.sender, spender) == 0));
    require(token.approve(spender, value));
  }

  function safeIncreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  )
    internal
  {
    uint256 newAllowance = token.allowance(address(this), spender).add(value);
    require(token.approve(spender, newAllowance));
  }

  function safeDecreaseAllowance(
    IERC20 token,
    address spender,
    uint256 value
  )
    internal
  {
    uint256 newAllowance = token.allowance(address(this), spender).sub(value);
    require(token.approve(spender, newAllowance));
  }
}

// File: openzeppelin-solidity/contracts/ownership/Ownable.sol

/**
 * @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 private _owner;

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

  /**
   * @dev The Ownable constructor sets the original `owner` of the contract to the sender
   * account.
   */
  constructor() internal {
    _owner = msg.sender;
    emit OwnershipTransferred(address(0), _owner);
  }

  /**
   * @return the address of the owner.
   */
  function owner() public view returns(address) {
    return _owner;
  }

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

  /**
   * @return true if `msg.sender` is the owner of the contract.
   */
  function isOwner() public view returns(bool) {
    return msg.sender == _owner;
  }

  /**
   * @dev Allows the current owner to relinquish control of the contract.
   * @notice Renouncing to ownership will leave the contract without an owner.
   * It will not be possible to call the functions with the `onlyOwner`
   * modifier anymore.
   */
  function renounceOwnership() public onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }

  /**
   * @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) public onlyOwner {
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers control of the contract to a newOwner.
   * @param newOwner The address to transfer ownership to.
   */
  function _transferOwnership(address newOwner) internal {
    require(newOwner != address(0));
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}

// File: contracts/Vesting.sol

/**
 * @title Vesting
 * @dev Vesting is a token holder contract that will allow a
 * beneficiary to extract the tokens after a given release time
 */
contract Vesting is Ownable {
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    // ERC20 basic token contract being held
    IERC20 private _token;

    // Info holds all the relevant information to calculate the right amount for `release`
    struct Info {
        bool    known;          // Logs whether or not the address is known and eligible to receive tokens
        uint256 totalAmount;    // Total amount of tokens to receive
        uint256 receivedAmount; // Amount of tokens already received
        uint256 startTime;      // Starting time of vesting
        uint256 releaseTime;    // End time of vesting
    }

    // Mapping of an address to it's information
    mapping(address => Info) private _info;

    constructor(
        IERC20 token
    )
        public
    {
        _token = token;
    }
    
    /**
     * @notice Add beneficiaries to the contract, allowing them to withdraw tokens.
     * @param beneficiary The address associated with the beneficiary.
     * @param releaseTime The timestamp at which 100% of their allocation is freed up.
     * @param amount The amount of tokens they can receive in total.
     */
    function addBeneficiary(
        address beneficiary,
        uint256 startTime,
        uint256 releaseTime,
        uint256 amount
    )
        external
        onlyOwner
    {
        Info storage info = _info[beneficiary];
        require(!info.known, "This address is already known to the contract.");
        require(releaseTime > startTime, "Release time must be later than the start time.");
        require(releaseTime > block.timestamp, "End of vesting period must be somewhere in the future.");

        info.startTime = startTime; // Set starting time
        info.totalAmount = amount; // Set amount
        info.releaseTime = releaseTime; // Set release time
        info.known = true; // Prevent overwriting of address data
    }

    /**
     * @notice Remove a beneficiary from the contract, preventing them from 
     * retrieving tokens in the future.
     * @param beneficiary The address associated with the beneficiary.
     */
    function removeBeneficiary(address beneficiary) external onlyOwner {
        Info storage info = _info[beneficiary];
        require(info.known, "The address you are trying to remove is unknown to the contract");

        _release(beneficiary); // Release leftover tokens before removing the investor
        info.known = false;
        info.totalAmount = 0;
        info.receivedAmount = 0;
        info.startTime = 0;
        info.releaseTime = 0;
    }

    /**
     * @notice Withdraw tokens from the contract. This function is strictly
     * for the owner, intended to take out any leftovers if needed.
     * @param amount The amount of tokens to take out.
     */
    function withdraw(uint256 amount) external onlyOwner {
        _token.safeTransfer(owner(), amount);
    }

    /**
     * @notice Transfers tokens held by timelock to beneficiary.
     * This function will check if a caller is eligible to receive tokens
     * and if so, will then call the internal `_release` function.
     */
    function release() external {
        require(_info[msg.sender].known, "You are not eligible to receive tokens from this contract.");
        _release(msg.sender);
    }

    /**
     * @notice Simple function to return vesting information for a caller.
     * Callers can then validate if their information has been properly stored,
     * instead of trusting the contract owner.
     */
    function check() external view returns (uint256, uint256, uint256, uint256) {
        return (
            _info[msg.sender].totalAmount, 
            _info[msg.sender].receivedAmount,
            _info[msg.sender].startTime, 
            _info[msg.sender].releaseTime
        );
    }

    /**
     * @notice Internal function to release tokens to a beneficiary.
     * This function has been extended from the `release` function included in
     * `TokenTimelock.sol` included in the OpenZeppelin-solidity library, to allow
     * for a 'second-by-second' token vesting schedule. Since block timestamps
     * is the closest Solidity can get to reading the current time, this
     * mechanism is used.
     */
    function _release(address beneficiary) internal {
        Info storage info = _info[beneficiary];
        if (block.timestamp >= info.releaseTime) {
            uint256 remainingTokens = info.totalAmount.sub(info.receivedAmount);
            require(remainingTokens > 0, "No tokens left to take out.");

            // Since `safeTransfer` will throw upon failure, we can modify the state beforehand.
            info.receivedAmount = info.totalAmount;
            _token.safeTransfer(beneficiary, remainingTokens);
        } else if (block.timestamp > info.startTime) {
            // Calculate allowance
            uint256 diff = info.releaseTime.sub(info.startTime);
            uint256 tokensPerTick = info.totalAmount.div(diff);
            uint256 ticks = block.timestamp.sub(info.startTime);
            uint256 tokens = tokensPerTick.mul(ticks);
            uint256 receivableTokens = tokens.sub(info.receivedAmount);
            require(receivableTokens > 0, "No tokens to take out right now.");

            // Since `safeTransfer` will throw upon failure, we can modify the state beforehand.
            info.receivedAmount = info.receivedAmount.add(receivableTokens);
            _token.safeTransfer(beneficiary, receivableTokens);
        } else {
            // We could let SafeMath revert release calls if vesting has not started yet.
            // However, in the interest of clarity to contract callers, this error
            // message is added instead.
            revert("This address is not eligible to receive tokens yet.");
        }
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

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000000000000000000000000940a2db1b7008b6c776d4faaca729d6d4a4aa551

-----Decoded View---------------
Arg [0] : token (address): 0x940a2dB1B7008B6C776d4faaCa729d6d4A4AA551

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000940a2db1b7008b6c776d4faaca729d6d4a4aa551

bzzr://553ca159c085d491ff265ef371451fc6435747b2c746b5689ef5250a66f5856f