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Contract Overview | CryptoKittiesSalesAuction
ETH Balance: 34.512467716097721706 Ether
ETH USD Value: $25,023.61 (@ $725.06/ETH)
No Of Transactions: 663896 txns
  Latest 25 txns from a total Of 663896 transactions (> more than 25 PendingTxns) View All

TxHash Age From To Value [TxFee]
0x80d0a2756338957e2f02c87f2124543f1227d63111b2c848254ece87de3d86cb(pending) 5 secs ago0x5b87036261236bbd249391165592e542dad9db8e  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0xa72b499aa51da7d607655e5754ca898cd9648650dcec98f202ed9d6e67daa6a4(pending) 5 secs ago0x087e9001d5c54de545c7f4b8777159c3de090616  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.882587714062192222 Ether(pending)
0x9c6dca0286426a43e7d0a66aeb9a787d9d351f3e885172ccdfe3a1e80dedc5c2(pending) 5 secs ago0x8186f71e8de1764aa335b936931bcc991a137454  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.007566537386805556 Ether(pending)
0xc82af26b57ef1cb7c2460b7e745da12a96ba3031acb87a0bf154c4f730b125c0(pending) 5 secs ago0xeaa698eaf67b76234685b5de6a406bda9f3a5310  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.006170790090856481 Ether(pending)
0xe5821c2a094f7685b0c7a7a31da98e2d911b2a9f50a8c338a0632c4901e8c9b2(pending) 5 secs ago0x307d4402417fcecbc037082dd2e8cc951e8b73fd  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x54ef67290dc8ca0a7ffd06c94616873c027045b7a102dee597703fe6e98bc94e(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.003996993743055556 Ether(pending)
0x2dfe88bf5eff1202e6437ce3a5866123e2225a0214b741adaeda9a5c97c61768(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x3203ccaf2a27ef8e2d14edba658e857e09ee48b61d3b9616551d13f3fe9c4c12(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x4878104a95293ace5694acb0bc1ab70f0b5a043494a378bd5ea2d91f4142ec79(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004003994244907408 Ether(pending)
0x4922d670ffcbf27d657640f98bac7d27492af303705265d5564db1116a5c6395(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x581ea72894fab6d4077e1ab7bcb1766741afc986350ace690b61db037880672d(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x6d4a87aefb71f9b6ce8865d2d92571a6ddbbc8461aa939c6b73fdf5a7ebe1ec8(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x94699c34a83e21f717d56fa187a12e2cd3b4733bb9512020f4bd2f1f84db2087(pending) 12 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004651238853935185 Ether(pending)
0x5ecf2cfedb48dbdb103b73d7f0d57c9409ccf7d32f24a233997e5d4a046473f8(pending) 12 secs ago0xeb2c826422c1b3d93b137f609f78a7c9d9b2666f  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0xbe975cd20059e039168e3b92d9b9136d5244e4241e9fa7ef683e5fa80b25eea6(pending) 12 secs ago0x89b2c4438793d9089c88752a0e5495e0095999d5  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x821e87505fccee9e4739b763ad1838d2674abf3ed75d585a8a588271e5050a9c(pending) 19 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x17b2fe4140ea78a5f64d22313b6e4c98a667c7919a905223e1af2a12b1a6a8a4(pending) 19 secs ago0x625ab92a16b85b8bcddf0b141244b6dd9d499411  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.012353152769675926 Ether(pending)
0x10e44e8d325772c6e67d0f944683683824e2072dfecf276e0b10c65908bb4776(pending) 19 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x838a1e5138266202f07eaf7332428282d7fd18db7504ce37e498bc84929babd2(pending) 19 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004016109250347223 Ether(pending)
0xde7928c245272c522890ac0b3d89bff69b29c13b9920cb368612b7ccd929935a(pending) 19 secs ago0x625ab92a16b85b8bcddf0b141244b6dd9d499411  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x5d0e40a392ae477703ee32971338b255693d74cc3efbf0f6ec6d2aeb8dbe87cf(pending) 19 secs ago0x625ab92a16b85b8bcddf0b141244b6dd9d499411  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x8593c1d45f71a7d7004e2cdb516a7c429145b3022dc4f70edb164e4407b8088b(pending) 19 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x286ccef582530a1d7c2cd18cfecfbbcb25ca352767a71e050c4e6275bbd7a59d(pending) 19 secs ago0x625ab92a16b85b8bcddf0b141244b6dd9d499411  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0xc26f35ca15f7615aed5891b070baf8ad07a7e2a80093bc67b1e8116f529b794e(pending) 19 secs ago0x34bbdaa8c46bb9cd1b8bb12f73837aa1d49cc74b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x6dca66d8c4aed5c4bab5cbade7bf4bfcecc325024810910551525da7ca80b315(pending) 19 secs ago0x625ab92a16b85b8bcddf0b141244b6dd9d499411  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
 Internal Transactions as a result of Contract Execution
  Latest 25 Internal Txns, Click here to View More View All
ParentTxHash Block Age From To Value
0xf88c20616796bd17011f3249face13bd26ee882bcb714e865ff45b780471441647501381 min ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0xc4e8e48307699514145dc35199b1bfe3e287d12c0.00003772645 Ether
0xf88c20616796bd17011f3249face13bd26ee882bcb714e865ff45b780471441647501381 min ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x4ce15b37851a4448a28899062906a02e51dee2670.037346604166666667 Ether
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Contract Source Code Verified
Contract Name: SaleClockAuction
Compiler Version: v0.4.18+commit.9cf6e910
Optimization Enabled: Yes
Runs (Optimiser):  200



  Contract Source Code   Find Similiar Contracts
pragma solidity ^0.4.11;


/**
 * @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;


  /**
   * @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 {
    if (newOwner != address(0)) {
      owner = newOwner;
    }
  }

}



/// @title Interface for contracts conforming to ERC-721: Non-Fungible Tokens
/// @author Dieter Shirley <[email protected]> (https://github.com/dete)
contract ERC721 {
    // Required methods
    function totalSupply() public view returns (uint256 total);
    function balanceOf(address _owner) public view returns (uint256 balance);
    function ownerOf(uint256 _tokenId) external view returns (address owner);
    function approve(address _to, uint256 _tokenId) external;
    function transfer(address _to, uint256 _tokenId) external;
    function transferFrom(address _from, address _to, uint256 _tokenId) external;

    // Events
    event Transfer(address from, address to, uint256 tokenId);
    event Approval(address owner, address approved, uint256 tokenId);

    // Optional
    // function name() public view returns (string name);
    // function symbol() public view returns (string symbol);
    // function tokensOfOwner(address _owner) external view returns (uint256[] tokenIds);
    // function tokenMetadata(uint256 _tokenId, string _preferredTransport) public view returns (string infoUrl);

    // ERC-165 Compatibility (https://github.com/ethereum/EIPs/issues/165)
    function supportsInterface(bytes4 _interfaceID) external view returns (bool);
}









/// @title Auction Core
/// @dev Contains models, variables, and internal methods for the auction.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuctionBase {

    // Represents an auction on an NFT
    struct Auction {
        // Current owner of NFT
        address seller;
        // Price (in wei) at beginning of auction
        uint128 startingPrice;
        // Price (in wei) at end of auction
        uint128 endingPrice;
        // Duration (in seconds) of auction
        uint64 duration;
        // Time when auction started
        // NOTE: 0 if this auction has been concluded
        uint64 startedAt;
    }

    // Reference to contract tracking NFT ownership
    ERC721 public nonFungibleContract;

    // Cut owner takes on each auction, measured in basis points (1/100 of a percent).
    // Values 0-10,000 map to 0%-100%
    uint256 public ownerCut;

    // Map from token ID to their corresponding auction.
    mapping (uint256 => Auction) tokenIdToAuction;

    event AuctionCreated(uint256 tokenId, uint256 startingPrice, uint256 endingPrice, uint256 duration);
    event AuctionSuccessful(uint256 tokenId, uint256 totalPrice, address winner);
    event AuctionCancelled(uint256 tokenId);

    /// @dev Returns true if the claimant owns the token.
    /// @param _claimant - Address claiming to own the token.
    /// @param _tokenId - ID of token whose ownership to verify.
    function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
        return (nonFungibleContract.ownerOf(_tokenId) == _claimant);
    }

    /// @dev Escrows the NFT, assigning ownership to this contract.
    /// Throws if the escrow fails.
    /// @param _owner - Current owner address of token to escrow.
    /// @param _tokenId - ID of token whose approval to verify.
    function _escrow(address _owner, uint256 _tokenId) internal {
        // it will throw if transfer fails
        nonFungibleContract.transferFrom(_owner, this, _tokenId);
    }

    /// @dev Transfers an NFT owned by this contract to another address.
    /// Returns true if the transfer succeeds.
    /// @param _receiver - Address to transfer NFT to.
    /// @param _tokenId - ID of token to transfer.
    function _transfer(address _receiver, uint256 _tokenId) internal {
        // it will throw if transfer fails
        nonFungibleContract.transfer(_receiver, _tokenId);
    }

    /// @dev Adds an auction to the list of open auctions. Also fires the
    ///  AuctionCreated event.
    /// @param _tokenId The ID of the token to be put on auction.
    /// @param _auction Auction to add.
    function _addAuction(uint256 _tokenId, Auction _auction) internal {
        // Require that all auctions have a duration of
        // at least one minute. (Keeps our math from getting hairy!)
        require(_auction.duration >= 1 minutes);

        tokenIdToAuction[_tokenId] = _auction;

        AuctionCreated(
            uint256(_tokenId),
            uint256(_auction.startingPrice),
            uint256(_auction.endingPrice),
            uint256(_auction.duration)
        );
    }

    /// @dev Cancels an auction unconditionally.
    function _cancelAuction(uint256 _tokenId, address _seller) internal {
        _removeAuction(_tokenId);
        _transfer(_seller, _tokenId);
        AuctionCancelled(_tokenId);
    }

    /// @dev Computes the price and transfers winnings.
    /// Does NOT transfer ownership of token.
    function _bid(uint256 _tokenId, uint256 _bidAmount)
        internal
        returns (uint256)
    {
        // Get a reference to the auction struct
        Auction storage auction = tokenIdToAuction[_tokenId];

        // Explicitly check that this auction is currently live.
        // (Because of how Ethereum mappings work, we can't just count
        // on the lookup above failing. An invalid _tokenId will just
        // return an auction object that is all zeros.)
        require(_isOnAuction(auction));

        // Check that the bid is greater than or equal to the current price
        uint256 price = _currentPrice(auction);
        require(_bidAmount >= price);

        // Grab a reference to the seller before the auction struct
        // gets deleted.
        address seller = auction.seller;

        // The bid is good! Remove the auction before sending the fees
        // to the sender so we can't have a reentrancy attack.
        _removeAuction(_tokenId);

        // Transfer proceeds to seller (if there are any!)
        if (price > 0) {
            // Calculate the auctioneer's cut.
            // (NOTE: _computeCut() is guaranteed to return a
            // value <= price, so this subtraction can't go negative.)
            uint256 auctioneerCut = _computeCut(price);
            uint256 sellerProceeds = price - auctioneerCut;

            // NOTE: Doing a transfer() in the middle of a complex
            // method like this is generally discouraged because of
            // reentrancy attacks and DoS attacks if the seller is
            // a contract with an invalid fallback function. We explicitly
            // guard against reentrancy attacks by removing the auction
            // before calling transfer(), and the only thing the seller
            // can DoS is the sale of their own asset! (And if it's an
            // accident, they can call cancelAuction(). )
            seller.transfer(sellerProceeds);
        }

        // Calculate any excess funds included with the bid. If the excess
        // is anything worth worrying about, transfer it back to bidder.
        // NOTE: We checked above that the bid amount is greater than or
        // equal to the price so this cannot underflow.
        uint256 bidExcess = _bidAmount - price;

        // Return the funds. Similar to the previous transfer, this is
        // not susceptible to a re-entry attack because the auction is
        // removed before any transfers occur.
        msg.sender.transfer(bidExcess);

        // Tell the world!
        AuctionSuccessful(_tokenId, price, msg.sender);

        return price;
    }

    /// @dev Removes an auction from the list of open auctions.
    /// @param _tokenId - ID of NFT on auction.
    function _removeAuction(uint256 _tokenId) internal {
        delete tokenIdToAuction[_tokenId];
    }

    /// @dev Returns true if the NFT is on auction.
    /// @param _auction - Auction to check.
    function _isOnAuction(Auction storage _auction) internal view returns (bool) {
        return (_auction.startedAt > 0);
    }

    /// @dev Returns current price of an NFT on auction. Broken into two
    ///  functions (this one, that computes the duration from the auction
    ///  structure, and the other that does the price computation) so we
    ///  can easily test that the price computation works correctly.
    function _currentPrice(Auction storage _auction)
        internal
        view
        returns (uint256)
    {
        uint256 secondsPassed = 0;

        // A bit of insurance against negative values (or wraparound).
        // Probably not necessary (since Ethereum guarnatees that the
        // now variable doesn't ever go backwards).
        if (now > _auction.startedAt) {
            secondsPassed = now - _auction.startedAt;
        }

        return _computeCurrentPrice(
            _auction.startingPrice,
            _auction.endingPrice,
            _auction.duration,
            secondsPassed
        );
    }

    /// @dev Computes the current price of an auction. Factored out
    ///  from _currentPrice so we can run extensive unit tests.
    ///  When testing, make this function public and turn on
    ///  `Current price computation` test suite.
    function _computeCurrentPrice(
        uint256 _startingPrice,
        uint256 _endingPrice,
        uint256 _duration,
        uint256 _secondsPassed
    )
        internal
        pure
        returns (uint256)
    {
        // NOTE: We don't use SafeMath (or similar) in this function because
        //  all of our public functions carefully cap the maximum values for
        //  time (at 64-bits) and currency (at 128-bits). _duration is
        //  also known to be non-zero (see the require() statement in
        //  _addAuction())
        if (_secondsPassed >= _duration) {
            // We've reached the end of the dynamic pricing portion
            // of the auction, just return the end price.
            return _endingPrice;
        } else {
            // Starting price can be higher than ending price (and often is!), so
            // this delta can be negative.
            int256 totalPriceChange = int256(_endingPrice) - int256(_startingPrice);

            // This multiplication can't overflow, _secondsPassed will easily fit within
            // 64-bits, and totalPriceChange will easily fit within 128-bits, their product
            // will always fit within 256-bits.
            int256 currentPriceChange = totalPriceChange * int256(_secondsPassed) / int256(_duration);

            // currentPriceChange can be negative, but if so, will have a magnitude
            // less that _startingPrice. Thus, this result will always end up positive.
            int256 currentPrice = int256(_startingPrice) + currentPriceChange;

            return uint256(currentPrice);
        }
    }

    /// @dev Computes owner's cut of a sale.
    /// @param _price - Sale price of NFT.
    function _computeCut(uint256 _price) internal view returns (uint256) {
        // NOTE: We don't use SafeMath (or similar) in this function because
        //  all of our entry functions carefully cap the maximum values for
        //  currency (at 128-bits), and ownerCut <= 10000 (see the require()
        //  statement in the ClockAuction constructor). The result of this
        //  function is always guaranteed to be <= _price.
        return _price * ownerCut / 10000;
    }

}







/**
 * @title Pausable
 * @dev Base contract which allows children to implement an emergency stop mechanism.
 */
contract Pausable is Ownable {
  event Pause();
  event Unpause();

  bool public paused = false;


  /**
   * @dev modifier to allow actions only when the contract IS paused
   */
  modifier whenNotPaused() {
    require(!paused);
    _;
  }

  /**
   * @dev modifier to allow actions only when the contract IS NOT paused
   */
  modifier whenPaused {
    require(paused);
    _;
  }

  /**
   * @dev called by the owner to pause, triggers stopped state
   */
  function pause() onlyOwner whenNotPaused returns (bool) {
    paused = true;
    Pause();
    return true;
  }

  /**
   * @dev called by the owner to unpause, returns to normal state
   */
  function unpause() onlyOwner whenPaused returns (bool) {
    paused = false;
    Unpause();
    return true;
  }
}


/// @title Clock auction for non-fungible tokens.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuction is Pausable, ClockAuctionBase {

    /// @dev The ERC-165 interface signature for ERC-721.
    ///  Ref: https://github.com/ethereum/EIPs/issues/165
    ///  Ref: https://github.com/ethereum/EIPs/issues/721
    bytes4 constant InterfaceSignature_ERC721 = bytes4(0x9a20483d);

    /// @dev Constructor creates a reference to the NFT ownership contract
    ///  and verifies the owner cut is in the valid range.
    /// @param _nftAddress - address of a deployed contract implementing
    ///  the Nonfungible Interface.
    /// @param _cut - percent cut the owner takes on each auction, must be
    ///  between 0-10,000.
    function ClockAuction(address _nftAddress, uint256 _cut) public {
        require(_cut <= 10000);
        ownerCut = _cut;

        ERC721 candidateContract = ERC721(_nftAddress);
        require(candidateContract.supportsInterface(InterfaceSignature_ERC721));
        nonFungibleContract = candidateContract;
    }

    /// @dev Remove all Ether from the contract, which is the owner's cuts
    ///  as well as any Ether sent directly to the contract address.
    ///  Always transfers to the NFT contract, but can be called either by
    ///  the owner or the NFT contract.
    function withdrawBalance() external {
        address nftAddress = address(nonFungibleContract);

        require(
            msg.sender == owner ||
            msg.sender == nftAddress
        );
        // We are using this boolean method to make sure that even if one fails it will still work
        bool res = nftAddress.send(this.balance);
    }

    /// @dev Creates and begins a new auction.
    /// @param _tokenId - ID of token to auction, sender must be owner.
    /// @param _startingPrice - Price of item (in wei) at beginning of auction.
    /// @param _endingPrice - Price of item (in wei) at end of auction.
    /// @param _duration - Length of time to move between starting
    ///  price and ending price (in seconds).
    /// @param _seller - Seller, if not the message sender
    function createAuction(
        uint256 _tokenId,
        uint256 _startingPrice,
        uint256 _endingPrice,
        uint256 _duration,
        address _seller
    )
        external
        whenNotPaused
    {
        // Sanity check that no inputs overflow how many bits we've allocated
        // to store them in the auction struct.
        require(_startingPrice == uint256(uint128(_startingPrice)));
        require(_endingPrice == uint256(uint128(_endingPrice)));
        require(_duration == uint256(uint64(_duration)));

        require(_owns(msg.sender, _tokenId));
        _escrow(msg.sender, _tokenId);
        Auction memory auction = Auction(
            _seller,
            uint128(_startingPrice),
            uint128(_endingPrice),
            uint64(_duration),
            uint64(now)
        );
        _addAuction(_tokenId, auction);
    }

    /// @dev Bids on an open auction, completing the auction and transferring
    ///  ownership of the NFT if enough Ether is supplied.
    /// @param _tokenId - ID of token to bid on.
    function bid(uint256 _tokenId)
        external
        payable
        whenNotPaused
    {
        // _bid will throw if the bid or funds transfer fails
        _bid(_tokenId, msg.value);
        _transfer(msg.sender, _tokenId);
    }

    /// @dev Cancels an auction that hasn't been won yet.
    ///  Returns the NFT to original owner.
    /// @notice This is a state-modifying function that can
    ///  be called while the contract is paused.
    /// @param _tokenId - ID of token on auction
    function cancelAuction(uint256 _tokenId)
        external
    {
        Auction storage auction = tokenIdToAuction[_tokenId];
        require(_isOnAuction(auction));
        address seller = auction.seller;
        require(msg.sender == seller);
        _cancelAuction(_tokenId, seller);
    }

    /// @dev Cancels an auction when the contract is paused.
    ///  Only the owner may do this, and NFTs are returned to
    ///  the seller. This should only be used in emergencies.
    /// @param _tokenId - ID of the NFT on auction to cancel.
    function cancelAuctionWhenPaused(uint256 _tokenId)
        whenPaused
        onlyOwner
        external
    {
        Auction storage auction = tokenIdToAuction[_tokenId];
        require(_isOnAuction(auction));
        _cancelAuction(_tokenId, auction.seller);
    }

    /// @dev Returns auction info for an NFT on auction.
    /// @param _tokenId - ID of NFT on auction.
    function getAuction(uint256 _tokenId)
        external
        view
        returns
    (
        address seller,
        uint256 startingPrice,
        uint256 endingPrice,
        uint256 duration,
        uint256 startedAt
    ) {
        Auction storage auction = tokenIdToAuction[_tokenId];
        require(_isOnAuction(auction));
        return (
            auction.seller,
            auction.startingPrice,
            auction.endingPrice,
            auction.duration,
            auction.startedAt
        );
    }

    /// @dev Returns the current price of an auction.
    /// @param _tokenId - ID of the token price we are checking.
    function getCurrentPrice(uint256 _tokenId)
        external
        view
        returns (uint256)
    {
        Auction storage auction = tokenIdToAuction[_tokenId];
        require(_isOnAuction(auction));
        return _currentPrice(auction);
    }

}


/// @title Clock auction modified for sale of kitties
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract SaleClockAuction is ClockAuction {

    // @dev Sanity check that allows us to ensure that we are pointing to the
    //  right auction in our setSaleAuctionAddress() call.
    bool public isSaleClockAuction = true;
    
    // Tracks last 5 sale price of gen0 kitty sales
    uint256 public gen0SaleCount;
    uint256[5] public lastGen0SalePrices;

    // Delegate constructor
    function SaleClockAuction(address _nftAddr, uint256 _cut) public
        ClockAuction(_nftAddr, _cut) {}

    /// @dev Creates and begins a new auction.
    /// @param _tokenId - ID of token to auction, sender must be owner.
    /// @param _startingPrice - Price of item (in wei) at beginning of auction.
    /// @param _endingPrice - Price of item (in wei) at end of auction.
    /// @param _duration - Length of auction (in seconds).
    /// @param _seller - Seller, if not the message sender
    function createAuction(
        uint256 _tokenId,
        uint256 _startingPrice,
        uint256 _endingPrice,
        uint256 _duration,
        address _seller
    )
        external
    {
        // Sanity check that no inputs overflow how many bits we've allocated
        // to store them in the auction struct.
        require(_startingPrice == uint256(uint128(_startingPrice)));
        require(_endingPrice == uint256(uint128(_endingPrice)));
        require(_duration == uint256(uint64(_duration)));

        require(msg.sender == address(nonFungibleContract));
        _escrow(_seller, _tokenId);
        Auction memory auction = Auction(
            _seller,
            uint128(_startingPrice),
            uint128(_endingPrice),
            uint64(_duration),
            uint64(now)
        );
        _addAuction(_tokenId, auction);
    }

    /// @dev Updates lastSalePrice if seller is the nft contract
    /// Otherwise, works the same as default bid method.
    function bid(uint256 _tokenId)
        external
        payable
    {
        // _bid verifies token ID size
        address seller = tokenIdToAuction[_tokenId].seller;
        uint256 price = _bid(_tokenId, msg.value);
        _transfer(msg.sender, _tokenId);

        // If not a gen0 auction, exit
        if (seller == address(nonFungibleContract)) {
            // Track gen0 sale prices
            lastGen0SalePrices[gen0SaleCount % 5] = price;
            gen0SaleCount++;
        }
    }

    function averageGen0SalePrice() external view returns (uint256) {
        uint256 sum = 0;
        for (uint256 i = 0; i < 5; i++) {
            sum += lastGen0SalePrices[i];
        }
        return sum / 5;
    }

}

    Contract ABI  
[{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"},{"name":"_startingPrice","type":"uint256"},{"name":"_endingPrice","type":"uint256"},{"name":"_duration","type":"uint256"},{"name":"_seller","type":"address"}],"name":"createAuction","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"bid","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"lastGen0SalePrices","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"withdrawBalance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"getAuction","outputs":[{"name":"seller","type":"address"},{"name":"startingPrice","type":"uint256"},{"name":"endingPrice","type":"uint256"},{"name":"duration","type":"uint256"},{"name":"startedAt","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"ownerCut","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isSaleClockAuction","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"cancelAuctionWhenPaused","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"gen0SaleCount","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"cancelAuction","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"getCurrentPrice","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"nonFungibleContract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"averageGen0SalePrice","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[{"name":"_nftAddr","type":"address"},{"name":"_cut","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"name":"tokenId","type":"uint256"},{"indexed":false,"name":"startingPrice","type":"uint256"},{"indexed":false,"name":"endingPrice","type":"uint256"},{"indexed":false,"name":"duration","type":"uint256"}],"name":"AuctionCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"tokenId","type":"uint256"},{"indexed":false,"name":"totalPrice","type":"uint256"},{"indexed":false,"name":"winner","type":"address"}],"name":"AuctionSuccessful","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"tokenId","type":"uint256"}],"name":"AuctionCancelled","type":"event"},{"anonymous":false,"inputs":[],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpause","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)
00000000000000000000000006012c8cf97bead5deae237070f9587f8e7a266d0000000000000000000000000000000000000000000000000000000000000177

-----Decoded View---------------
Found 2 constructor arguments :
Arg [0] : 00000000000000000000000006012c8cf97bead5deae237070f9587f8e7a266d
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000177


   Swarm Source:
bzzr://666ae68d08f6b7766b21d1f7ba24d5315f1eb94a6e0b2af3961e798edfbb27de

 

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