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TxHash Age From To Value [TxFee]
0xd70f8c4779f8481632d4ad0b3cc6fe61b9614d908ccac0a580ba78525afab0026 hrs 41 mins ago0x9a56a79ac28555f2b9e420fc14af16572233cbdc  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.33 Ether0.000335016
0xb0af6f4eb542234e2bb49e456c3e4c7693f6b12cc09af02ecb09dc092ec11fc812 hrs 2 mins ago0x8cee0a46179463fac7231776af4e0bae18977780  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.52805251 Ether0.00333872
0xdff209aee234d41ae154901c78c0ec0c7c805fc0e37170ad9b261c6609960e081 day 15 hrs ago0x7439ae37d5e29633e847c120ca6db728107f9156  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0 Ether0.000608627
0xf7027cf5dd0dae724e9a918616ba4775820d6a574dddd26254f6cbb0dc0a7e9f4 days 2 hrs ago0xb29fe3b624fd8794e49c4f9a3e3d0a03e11e1694  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.043 Ether0.00250404
0x8ac3489b1b4bc3e69d5a27dca002e084c503fbe75e34b217242d75ca6774a6d44 days 8 hrs ago0x7439ae37d5e29633e847c120ca6db728107f9156  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0 Ether0.000049607
0x2c8c17473b5dcad21721642cb7b5af2754588e24039ae8c3a17bf5aeb9dc4c1b4 days 23 hrs ago0xc91d59950c14d59d827d2e4c41a61b8c66224dff  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.0049 Ether0.000861
0xb4463e2ed1f87db53ee60e87b8f462e6cf7eafd10f559ef9695ef6c186b6e8904 days 23 hrs ago0xd2ddf94fa9fb99c87ca3439d97171b39ed2c3978  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.05 Ether0.002190976
0xecc8ba2e869c65d5c2e6546d9d4c826114d55878035698bc23263bfa2eaab4535 days 20 hrs ago0xe20d39e95df3e8bbd806261ba25e9f5fdc2296f6  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.9 Ether0.00502524
0x48c4e98ae3e1046d1ee9dda19f2f47861084a2ecdc7b3a9bc0d05b17272c959d6 days 18 hrs ago0xf6e613af789c6c042b62039d1a1a88c10ec0ad30  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.241 Ether0.00250404
0x863b5dee66040dfa1ef94f8eed1f99ea485e5318ce7a28ddfee313981fab99947 days 2 hrs ago0x63d2d6d68914cab7d45d10f3c0eb376fb378ec3e  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.1 Ether0.003422188
0xeed02834a7baec324e6a687daea7763843e592cfa072e0e23503af1d7e9e09d57 days 16 hrs ago0xc34456f79f1a9d38faf9609cc8cef540a77c7ec9  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.02 Ether0.000273872
0xdd956c88ac6524d5eaf8e2f1a67df8a973a49dfa94ad6c85cdd02c742aa45d868 days 5 hrs ago0x7439ae37d5e29633e847c120ca6db728107f9156  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0 Ether0.002012733
0x92363b31c456b84145ae7f267e8d28824143f3c017062ba6ce8e79a8bd5396fe8 days 16 hrs ago0xf6051215ff93ac3b5e225a2f1ec86ec24a77b5e3  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.266 Ether0.002807188
0xbefdbcc8244fa3f4dcec6d22ece9f32446cf7690aaa9760109ce051551fb5cd18 days 17 hrs ago0x9d552c4c9786709a4abed2aa8ac8d5b8ed56a9a2  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.7 Ether0.00205404
0xd3a42d1ae28b16ef21531d70cc2c89a7d831a906c37e7079bc4835bbef7d965a8 days 17 hrs ago0x9d552c4c9786709a4abed2aa8ac8d5b8ed56a9a2  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.001 Ether0.00250404
0x1357436a361974cccee71750080a49d0bb1fa7a0c298dc38ef52b139ad8a181a8 days 19 hrs ago0x14d4c0560d9467392214f8600c836fddd619ffe6  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.14735 Ether0.00262671
0x6c14d8dbd8dfa8e7b6f5734b7cdcec26377cee2d2e59674f77c65fa5b14069e48 days 21 hrs ago0xcf4ac264829cd85de9fce86d5fcf35d47fcc8095  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.66506681 Ether0.003433914
0xa8977e1906291331343313ec3f00cae89a89e30d3cc30325bf4979bb38b71dff8 days 21 hrs ago0xc017e43cb5f1fba21a1383f2bc1f57095a4f01c2  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.19991 Ether0.000083468
0x35133744baf28fdccb32c55b7a4e0916bb199ffb27790c574d1a48efaa9430b48 days 22 hrs ago0x9329005fc32ff9c36b1c19f32a5716ab8821d95f  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.93 Ether0.002807188
0x3cff917903a7d3b784d0608a6cca703e93120be6b03775519886b6f5e617903e9 days 1 hr ago0xb28863a29b134a807e8c30732bbae0978fea35e2  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.676683887777777 Ether0.00795663
0x0d37eb8da06a3eb161203d15a2f1ccea713b3e81d326241fe1284360676609269 days 2 hrs ago0xbee576ba2d98c59691978e8cb77af98489a1395c  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.50560366 Ether0.00250404
0xb157398a29219b908d6cb6d205319df99276f3232dc0fa3d982cf9fe86d890719 days 2 hrs ago0x9329005fc32ff9c36b1c19f32a5716ab8821d95f  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.1 Ether0.002818914
0x5bc9d363cd8e25861e5f9be63a48b936397344298d36fc3a7e010753ad57ea529 days 2 hrs ago0x586df0a53cc6350f50873182dd0bbb71f2d4a223  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.1 Ether0.00250404
0x730f428eb23f805e3a8c32e7bd230e642094a2c6ead9e23d2782adaf4e439c6f9 days 2 hrs ago0xfc03824b6bcea8abbbf61e550e95865113ccd9c4  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0.5 Ether0.000021
0xaf397442cf1fb7a13972ccdfc4abf9697adb7a57bf862a77dbab04882734f6139 days 3 hrs ago0x178d42b839072081252686816abf4f37b322a5df  IN   0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef1.02 Ether0.00250404
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0xd70f8c4779f8481632d4ad0b3cc6fe61b9614d908ccac0a580ba78525afab00254978426 hrs 41 mins ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e31.33 Ether
0xb0af6f4eb542234e2bb49e456c3e4c7693f6b12cc09af02ecb09dc092ec11fc8549657312 hrs 2 mins ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.52805251 Ether
0xf7027cf5dd0dae724e9a918616ba4775820d6a574dddd26254f6cbb0dc0a7e9f54754834 days 2 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.043 Ether
0xb4463e2ed1f87db53ee60e87b8f462e6cf7eafd10f559ef9695ef6c186b6e89054705824 days 23 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.05 Ether
0xecc8ba2e869c65d5c2e6546d9d4c826114d55878035698bc23263bfa2eaab45354656405 days 20 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e31.9 Ether
0x48c4e98ae3e1046d1ee9dda19f2f47861084a2ecdc7b3a9bc0d05b17272c959d54603096 days 18 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.241 Ether
0x863b5dee66040dfa1ef94f8eed1f99ea485e5318ce7a28ddfee313981fab999454582237 days 2 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.1 Ether
0xeed02834a7baec324e6a687daea7763843e592cfa072e0e23503af1d7e9e09d554549367 days 16 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.02 Ether
0x92363b31c456b84145ae7f267e8d28824143f3c017062ba6ce8e79a8bd5396fe54490238 days 16 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.266 Ether
0xbefdbcc8244fa3f4dcec6d22ece9f32446cf7690aaa9760109ce051551fb5cd154486058 days 17 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.7 Ether
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0xa8977e1906291331343313ec3f00cae89a89e30d3cc30325bf4979bb38b71dff54476498 days 21 hrs ago0xcffbd9e9005db779ad2a897ae7b4ec16e32cb6ef0x3f39cd8a8ae0540f0fd38ab695d36cecf0f254e30.19991 Ether
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Contract Source Code Verified (Exact match)
Contract Name: BitcoinusCrowdsale
Compiler Version: v0.4.18+commit.9cf6e910
Optimization Enabled: No
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts
pragma solidity ^0.4.18;


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

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

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

/**
 * @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 {
  function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
    assert(token.transfer(to, value));
  }

  function safeTransferFrom(ERC20 token, address from, address to, uint256 value) internal {
    assert(token.transferFrom(from, to, value));
  }

  function safeApprove(ERC20 token, address spender, uint256 value) internal {
    assert(token.approve(spender, value));
  }
}

/**
 * @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() public {
    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) public onlyOwner {
    require(newOwner != address(0));
    OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }
}

/**
 * @title RefundVault
 * @dev This contract is used for storing funds while a crowdsale
 * is in progress. Supports refunding the money if crowdsale fails,
 * and forwarding it if crowdsale is successful.
 */
contract RefundVault is Ownable {
  using SafeMath for uint256;

  enum State { Active, Refunding, Closed }

  mapping (address => uint256) public deposited;
  address public wallet;
  State public state;

  event Closed();
  event RefundsEnabled();
  event Refunded(address indexed beneficiary, uint256 weiAmount);

  function RefundVault(address _wallet) public {
    require(_wallet != address(0));
    wallet = _wallet;
    state = State.Active;
  }

  function deposit(address investor) onlyOwner public payable {
    require(state == State.Active);
    deposited[investor] = deposited[investor].add(msg.value);
  }

  function close() onlyOwner public {
    require(state == State.Active);
    state = State.Closed;
    Closed();
    wallet.transfer(this.balance);
  }

  function enableRefunds() onlyOwner public {
    require(state == State.Active);
    state = State.Refunding;
    RefundsEnabled();
  }

  function refund(address investor) public {
    require(state == State.Refunding);
    uint256 depositedValue = deposited[investor];
    deposited[investor] = 0;
    investor.transfer(depositedValue);
    Refunded(investor, depositedValue);
  }
}

/**
 * @title TokenTimelock
 * @dev TokenTimelock is a token holder contract that will allow a
 * beneficiary to extract the tokens after a given release time
 */
contract TokenTimelock {
  using SafeERC20 for ERC20Basic;

  // ERC20 basic token contract being held
  ERC20Basic public token;

  // beneficiary of tokens after they are released
  address public beneficiary;

  // timestamp when token release is enabled
  uint256 public releaseTime;

  function TokenTimelock(ERC20Basic _token, address _beneficiary, uint256 _releaseTime) public {
    require(_releaseTime > now);
    token = _token;
    beneficiary = _beneficiary;
    releaseTime = _releaseTime;
  }

  /**
   * @notice Transfers tokens held by timelock to beneficiary.
   */
  function release() public {
    require(now >= releaseTime);

    uint256 amount = token.balanceOf(this);
    require(amount > 0);

    token.safeTransfer(beneficiary, amount);
  }
}


/**
 * @title ERC20Basic
 * @dev Simpler version of ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/179
 */
contract ERC20Basic {
  uint256 public totalSupply;
  function balanceOf(address who) public view returns (uint256);
  function transfer(address to, uint256 value) public returns (bool);
  event Transfer(address indexed from, address indexed to, uint256 value);
}

/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
contract ERC20 is ERC20Basic {
  function allowance(address owner, address spender) public view returns (uint256);
  function transferFrom(address from, address to, uint256 value) public returns (bool);
  function approve(address spender, uint256 value) public returns (bool);
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract BitcoinusToken is ERC20, Ownable {
  using SafeMath for uint256;

  string public constant name = "Bitcoinus";
    string public constant symbol = "BITS";
    uint8 public constant decimals = 18;

  mapping (address => uint256) balances;
  mapping (address => mapping (address => uint256)) internal allowed;

  event Mint(address indexed to, uint256 amount);
    event MintFinished();

  bool public mintingFinished = false;

  modifier canTransfer() {
    require(mintingFinished);
    _;
  }

  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public canTransfer returns (bool) {
    require(_to != address(0));
    require(_value <= balances[msg.sender]);

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }


  /**
  * @dev Transfer tokens from one address to another
  * @param _from address The address which you want to send tokens from
  * @param _to address The address which you want to transfer to
  * @param _value uint256 the amount of tokens to be transferred
  */
  function transferFrom(address _from, address _to, uint256 _value) public canTransfer returns (bool) {
    require(_to != address(0));
    require(_value <= balances[_from]);
    require(_value <= allowed[_from][msg.sender]);

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

  /**
  * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
  *
  * Beware that changing an allowance with this method brings the risk that someone may use both the old
  * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
  * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
  * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
  * @param _spender The address which will spend the funds.
  * @param _value The amount of tokens to be spent.
  */
  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    Approval(msg.sender, _spender, _value);
    return true;
  }

  /**
  * @dev Function to check the amount of tokens that an owner allowed to a spender.
  * @param _owner address The address which owns the funds.
  * @param _spender address The address which will spend the funds.
  * @return A uint256 specifying the amount of tokens still available for the spender.
  */
  function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
  }

  /**
  * @dev Increase the amount of tokens that an owner allowed to a spender.
  *
  * approve should be called when allowed[_spender] == 0. To increment
  * allowed value is better to use this function to avoid 2 calls (and wait until
  * the first transaction is mined)
  * From MonolithDAO Token.sol
  * @param _spender The address which will spend the funds.
  * @param _addedValue The amount of tokens to increase the allowance by.
  */
  function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
    allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  /**
  * @dev Decrease the amount of tokens that an owner allowed to a spender.
  *
  * approve should be called when allowed[_spender] == 0. To decrement
  * allowed value is better to use this function to avoid 2 calls (and wait until
  * the first transaction is mined)
  * From MonolithDAO Token.sol
  * @param _spender The address which will spend the funds.
  * @param _subtractedValue The amount of tokens to decrease the allowance by.
  */
  function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
    uint oldValue = allowed[msg.sender][_spender];
    if (_subtractedValue > oldValue) {
      allowed[msg.sender][_spender] = 0;
    } else {
      allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
    return true;
  }

  modifier canMint() {
    require(!mintingFinished);
    _;
  }

  /**
  * @dev Function to mint tokens
  * @param _to The address that will receive the minted tokens.
  * @param _amount The amount of tokens to mint.
  * @return A boolean that indicates if the operation was successful.
  */
  function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
    totalSupply = totalSupply.add(_amount);
    balances[_to] = balances[_to].add(_amount);
    Mint(_to, _amount);
    Transfer(address(0), _to, _amount);
    return true;
  }

  /**
  * @dev Function to stop minting new tokens.
  * @return True if the operation was successful.
  */
  function finishMinting() onlyOwner canMint public returns (bool) {
    mintingFinished = true;
    MintFinished();
    return true;
  }
}

contract BitcoinusCrowdsale is Ownable {
  using SafeMath for uint256;
  // Wallet where all ether will be stored
  address public constant WALLET = 0x3f39CD8a8Ae0540F0FD38aB695D36ceCf0f254E3;
  // Wallet for team tokens
  address public constant TEAM_WALLET = 0x35317879205E9fd59AeeC429b5494B84D8507C20;
  // Wallet for bounty tokens
  address public constant BOUNTY_WALLET = 0x088C48cA51A024909f06DF60597492492Eb66C2a;
  // Wallet for company tokens
  address public constant COMPANY_WALLET = 0x576B5cA75d4598dC31640F395F6201C5Dd0EbbB4;

  uint256 public constant TEAM_TOKENS = 4000000e18;
  uint256 public constant TEAM_TOKENS_LOCK_PERIOD = 60 * 60 * 24 * 365; // 365 days
  uint256 public constant COMPANY_TOKENS = 10000000e18;
  uint256 public constant COMPANY_TOKENS_LOCK_PERIOD = 60 * 60 * 24 * 180; // 180 days
  uint256 public constant BOUNTY_TOKENS = 1000000e18;
  uint256 public constant SOFT_CAP = 3000000e18;
  uint256 public constant ICO_TOKENS = 50000000e18;
  uint256 public constant START_TIME = 1516579200; // 2018/01/22 00:00 UTC +0
  uint256 public constant END_TIME = 1525996800; // 2018/05/11 00:00 UTC +0
  uint256 public constant RATE = 1000;
  uint256 public constant LARGE_PURCHASE = 1500e18;
  uint256 public constant LARGE_PURCHASE_BONUS = 5;

  Stage[] stages;

  struct Stage {
    uint256 till;
    uint256 cap;
    uint8 discount;
  }

  // The token being sold
  BitcoinusToken public token;

  // amount of raised money in wei
  uint256 public weiRaised;

  // refund vault used to hold funds while crowdsale is running
    RefundVault public vault;

  uint256 public currentStage = 0;
    bool public isFinalized = false;

  address tokenMinter;

  TokenTimelock public teamTimelock;
  TokenTimelock public companyTimelock;

  /**
  * event for token purchase logging
  * @param purchaser who paid for the tokens
  * @param beneficiary who got the tokens
  * @param value weis paid for purchase
  * @param amount amount of tokens purchased
  */
  event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);

  event Finalized();
  /**
   * When there no tokens left to mint and token minter tries to manually mint tokens
   * this event is raised to signal how many tokens we have to charge back to purchaser
   */
  event ManualTokenMintRequiresRefund(address indexed purchaser, uint256 value);

  function BitcoinusCrowdsale(address _token) public {
    stages.push(Stage({ till: 1519344000, discount: 47, cap: 8000000e18 })); // 2018/02/23 00:00 UTC +0
    stages.push(Stage({ till: 1521849600, discount: 40, cap: 17000000e18 })); // 2018/03/24 00:00 UTC +0
    stages.push(Stage({ till: 1523836800, discount: 30, cap: 15000000e18 })); // 2018/04/16 00:00 UTC +0
    stages.push(Stage({ till: 1525219200, discount: 15, cap: 7000000e18 })); // 2018/05/02 00:00 UTC +0
    stages.push(Stage({ till: 1525996800, discount: 5,  cap: 3000000e18 })); // 2018/05/11 00:00 UTC +0

    token = BitcoinusToken(_token);
    vault = new RefundVault(WALLET);
    tokenMinter = msg.sender;
  }

  modifier onlyTokenMinterOrOwner() {
    require(msg.sender == tokenMinter || msg.sender == owner);
    _;
  }

  // low level token purchase function
  function buyTokens(address beneficiary) public payable {
    require(beneficiary != address(0));
    require(validPurchase());

    uint256 weiAmount = msg.value;
    uint256 nowTime = getNow();
    // this loop moves stages and insures correct stage according to date
    while (currentStage < stages.length && stages[currentStage].till < nowTime) {
      stages[stages.length - 1].cap = stages[stages.length - 1].cap.add(stages[currentStage].cap); // move all unsold tokens to last stage
      stages[currentStage].cap = 0;
      currentStage = currentStage.add(1);
    }

    // calculate token amount to be created
    uint256 tokens = calculateTokens(weiAmount);

    uint256 excess = appendContribution(beneficiary, tokens);

    if (excess > 0) { // hard cap reached, no more tokens to mint
      uint256 refund = excess.mul(weiAmount).div(tokens);
      weiAmount = weiAmount.sub(refund);
      msg.sender.transfer(refund);
    }

    // update state
    weiRaised = weiRaised.add(weiAmount);
    TokenPurchase(msg.sender, beneficiary, weiAmount, tokens.sub(excess));

    if (goalReached()) {
      WALLET.transfer(weiAmount);
    } else {
      vault.deposit.value(weiAmount)(msg.sender);
    }
  }

  function calculateTokens(uint256 _weiAmount) internal view returns (uint256) {
    uint256 tokens = _weiAmount.mul(RATE).mul(100).div(uint256(100).sub(stages[currentStage].discount));

    uint256 bonus = 0;
    if (currentStage > 0 && tokens >= LARGE_PURCHASE) {
      bonus = tokens.mul(LARGE_PURCHASE_BONUS).div(100);
    }

    return tokens.add(bonus);
  }

  function appendContribution(address _beneficiary, uint256 _tokens) internal returns (uint256) {
    uint256 excess = _tokens;
    uint256 tokensToMint = 0;

    while (excess > 0 && currentStage < stages.length) {
      Stage storage stage = stages[currentStage];
      if (excess >= stage.cap) {
        excess = excess.sub(stage.cap);
        tokensToMint = tokensToMint.add(stage.cap);
        stage.cap = 0;
        currentStage = currentStage.add(1);
      } else {
        stage.cap = stage.cap.sub(excess);
        tokensToMint = tokensToMint.add(excess);
        excess = 0;
      }
    }
    token.mint(_beneficiary, tokensToMint);
    return excess;
  }

  // @return true if the transaction can buy tokens
  function validPurchase() internal view returns (bool) {
    bool withinPeriod = getNow() >= START_TIME && getNow() <= END_TIME;
    bool nonZeroPurchase = msg.value != 0;
    bool canMint = token.totalSupply() < ICO_TOKENS;
    bool validStage = (currentStage < stages.length);
    return withinPeriod && nonZeroPurchase && canMint && validStage;
  }

  // if crowdsale is unsuccessful, investors can claim refunds here
    function claimRefund() public {
      require(isFinalized);
      require(!goalReached());

      vault.refund(msg.sender);
  }

  /**
    * @dev Must be called after crowdsale ends, to do some extra finalization
    * work. Calls the contract's finalization function.
    */
    function finalize() onlyOwner public {
      require(!isFinalized);
      require(hasEnded());

      if (goalReached()) {
      vault.close();

      teamTimelock = new TokenTimelock(token, TEAM_WALLET, getNow().add(TEAM_TOKENS_LOCK_PERIOD));
      token.mint(teamTimelock, TEAM_TOKENS);

      companyTimelock = new TokenTimelock(token, COMPANY_WALLET, getNow().add(COMPANY_TOKENS_LOCK_PERIOD));
      token.mint(companyTimelock, COMPANY_TOKENS);

      token.mint(BOUNTY_WALLET, BOUNTY_TOKENS);

      token.finishMinting();
      token.transferOwnership(0x1);
      } else {
          vault.enableRefunds();
      }

      Finalized();

      isFinalized = true;
    }

  // @return true if crowdsale event has ended
  function hasEnded() public view returns (bool) {
    return getNow() > END_TIME || token.totalSupply() == ICO_TOKENS;
  }

    function goalReached() public view returns (bool) {
      return token.totalSupply() >= SOFT_CAP;
    }

    // fallback function can be used to buy tokens or claim refund
    function () external payable {
      if (!isFinalized) {
        buyTokens(msg.sender);
    } else {
      claimRefund();
      }
    }

    function mintTokens(address[] _receivers, uint256[] _amounts) external onlyTokenMinterOrOwner {
    require(_receivers.length > 0 && _receivers.length <= 100);
    require(_receivers.length == _amounts.length);
    require(!isFinalized);
    for (uint256 i = 0; i < _receivers.length; i++) {
      address receiver = _receivers[i];
      uint256 amount = _amounts[i];

        require(receiver != address(0));
        require(amount > 0);

        uint256 excess = appendContribution(receiver, amount);

        if (excess > 0) {
          ManualTokenMintRequiresRefund(receiver, excess);
        }
    }
    }

    function setTokenMinter(address _tokenMinter) public onlyOwner {
      require(_tokenMinter != address(0));
      tokenMinter = _tokenMinter;
    }

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

    Contract ABI  
[{"constant":true,"inputs":[],"name":"TEAM_WALLET","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"END_TIME","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"weiRaised","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"finalize","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"teamTimelock","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"COMPANY_TOKENS_LOCK_PERIOD","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"currentStage","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"LARGE_PURCHASE","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"BOUNTY_TOKENS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"RATE","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"WALLET","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenMinter","type":"address"}],"name":"setTokenMinter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"goalReached","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"TEAM_TOKENS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"companyTimelock","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"isFinalized","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"LARGE_PURCHASE_BONUS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"COMPANY_WALLET","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"claimRefund","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"ICO_TOKENS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"SOFT_CAP","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"COMPANY_TOKENS","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_receivers","type":"address[]"},{"name":"_amounts","type":"uint256[]"}],"name":"mintTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"BOUNTY_WALLET","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"START_TIME","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"TEAM_TOKENS_LOCK_PERIOD","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"beneficiary","type":"address"}],"name":"buyTokens","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"hasEnded","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"vault","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"token","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_token","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"purchaser","type":"address"},{"indexed":true,"name":"beneficiary","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"TokenPurchase","type":"event"},{"anonymous":false,"inputs":[],"name":"Finalized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"purchaser","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"ManualTokenMintRequiresRefund","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"previousOwner","type":"address"},{"indexed":true,"name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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)
000000000000000000000000cc53c2e5e2421cb5a5307ed1c229816d71266292

-----Decoded View---------------
Found 1 constructor arguments :
Arg [0] : 000000000000000000000000cc53c2e5e2421cb5a5307ed1c229816d71266292


   Swarm Source:
bzzr://f273a90d5edba6098f58a3f197f2b46e89d8d1b8907d120d1b6d95f7e012f6e5

 

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