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Contract Overview | CryptoKittiesSalesAuction
Balance: 2.174213989577056089 Ether
Ether Value: $968.00 (@ $445.22/ETH)
Transactions: 765891 txns
Misc
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Contract Creator: 0xba52c75764d6f594735dc735be7f1830cdf58ddfat txn 0x44fd65a70b4ac20e6b59c10692b5d411c636a318afe33362d0c1214a2ede4e66
Token Balances:
 Latest 25 txns from a total Of 765891 transactions
(> more than 25 PendingTxns)

TxHash Age From To Value [TxFee]
0x35e0b59ac790f64514edb4e3fa3fa33f3df8af73fed637d3e7a6f30da485c336(pending)0x6c3a57c0f6cb44e08e903021ebd4819f7e937354  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.00315113972962963 Ether(pending)
0xb426cefb82c22b28c1eed37dbbd0fb19bba20d3db1b27687e38010a53669cdf5(pending)0xd12a95e8b69127f47e12bdcc38111010734da53b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x6218acc1760d5a3cb62cf2c2deadfa6ff9cc6436a271623d8b1f5248b38a353b(pending)0xf32b273384e225f49d24c930d3cfa31ab48471e3  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0xa488381b00a550b27836a6addab420ea175f9c229594759814211ed0729dc5a0(pending)0x6e63a4caeccb4f341ee9c9175c9cc554bdb6d10b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004 Ether(pending)
0xd076a1fea67d310fe85946edf0b114c6221696124d7b75ba5fe1132323184266(pending)0x4ffee72f0c88dcfc1e5cf74e1d7cd06a161d94af  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0 Ether(pending)
0x28da4ab6054794826f91fffd8b61de22da3ba35a0d8a9786a88d447a3db4e58e(pending)0xba4bac5bd6ab7c4fda3eadb2f9fc5ba8b5b60c23  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.002647401067071448 Ether(pending)
0x182a854f53e1e13fab7dcc5f5cf0fab4f42a65ae603e09128677ca56edc545ab(pending)0x7358024e8709c98e71e83ad2086bc0ffbebda909  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.005 Ether(pending)
0x6661762234c2eae0f349da315306213090b67e643fa60865a58c029ba1eda84e(pending)0x7358024e8709c98e71e83ad2086bc0ffbebda909  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004247307531267242 Ether(pending)
0x90a999bfbcc5505729c515eedbbc96f82758e2d3ef8ad00be3f647671d8ac9d1(pending)0x8fd66c01d165c4497a978829de229fd3514b25e7  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.003 Ether(pending)
0x735b2f9cdaabfd0c6b34d1bb748925f977bf9abcc8ff15aa7272cd9787f40286(pending)0x048e0ce6eea6b44710340f0f53c65bf6a98d3a7a  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004 Ether(pending)
0xcd541ba2a8a602996d00abafa1658bd5e9fb559e932af17445acad26d62ec6d7(pending)0xe860068c988895233b8cb4c99d599f1d7972943e  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.13 Ether(pending)
0x61f40719be471e355ecb3d47ce19c272fead494646f59cbaab850c8e36a5ebba(pending)0xe860068c988895233b8cb4c99d599f1d7972943e  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.134638674085289534 Ether(pending)
0x761431204c0af4afdd74b9fbe64fce67e275899f01b107d5cc9a44e91e5041e9(pending)0x0dd1bfe7b3a13bc6acb4813f23894061f221465b  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.004 Ether(pending)
0x1d1b9afacd1dd36de234149bdb89908a1cca4e5de22f5bd4c4ab2dc145faa486(pending)0x6581a5a0b7089f7b8adfeb0de5546ecbe94c4058  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.001 Ether(pending)
0xc0addefc9261bb570cc85a81c658321b15044861f9932705d22cbba7a8885ee5(pending)0x24cd76925fdd3ac15734edb3a1792c33ec368d5d  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.001907025997790692 Ether(pending)
0x2550db60a5ecbd825138824854726b0c32072e4cd61083a8e38c1fbf864f3879(pending)0xe279654485397d57fcd78bf90c3e9f6d81cad3e8  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.068432801433209127 Ether(pending)
0x4db5b36d9c9bf8c289a98d12eaed9b9ee805d3f0b0384e6f5fa459f9c68091b7(pending)0xe279654485397d57fcd78bf90c3e9f6d81cad3e8  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.072828736328656915 Ether(pending)
0x25cb308bf939f558327c0a113440147e3395db611e4ca0d7f9517bf0cb2c7326(pending)0xe9763f6bdbfea8afd84f353b6563c79f8ee2352d  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.003101039118517675 Ether(pending)
0x91bdb53b2485c8e41e84c2969807dedd504c07dcd6c69ec897f0c9ec2bd8a3b0(pending)0xe279654485397d57fcd78bf90c3e9f6d81cad3e8  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.072842886754427483 Ether(pending)
0x4e33ac70571f2ee9c327ad08e029dcdd4e1be55c48efa7ab1b4f9647dc8863f9(pending)0xe279654485397d57fcd78bf90c3e9f6d81cad3e8  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.072822190373450911 Ether(pending)
0x37bcec183a40ccdf9ccbf0943ae41d24838589778b1f741156652e456139878b(pending)0x4b1e88eb599264b1c01754661fce75ae5b7a7779  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.002 Ether(pending)
0x2fdcae2a7578ec99bc1f283a2b923e88b33fbea524daedebc7a97b5d78be4c7a(pending)0x4b1e88eb599264b1c01754661fce75ae5b7a7779  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.002 Ether(pending)
0x5759b910c24d6c57a145cecfa6cf2b12d3d8fb2091db956d77a4dc93fbe04247(pending)0x181d3cc5969c75e3728c8ca81ccd82d7f74a7a91  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.007 Ether(pending)
0xed0f04608c467fb435a1692270d17cf14f0a93f4bcff3fe25260a5f97cfa7bc5(pending)0xd5bfcb58f900b31c8155057616482a9d4ad70170  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.025898599169767484 Ether(pending)
0xd0849ef9ab20e476dd1ce3785fdb43f9299dc2298a12cd396ae3e755622b1699(pending)0xd5bfcb58f900b31c8155057616482a9d4ad70170  IN  0xb1690c08e213a35ed9bab7b318de14420fb57d8c0.027655029806892176 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
0xc4fddacabcb09a5ab96f24e0b20e0c2a2aa5a3ecb7420ed2adfbc411425b25ca6000024 47 secs ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x9d2ac7c3e17163f104e6abf5374f502b9f1db1020.000000095112741603 Ether
0xc4fddacabcb09a5ab96f24e0b20e0c2a2aa5a3ecb7420ed2adfbc411425b25ca6000024 47 secs ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x300850da694cccc096c70d89550891def3ef9f7c0.002528494184027779 Ether
0xb81146ccfa12bf24bac2709e925597841ae9843418a7afaee39421be140d7c1c60000035 mins ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x1e63a6146c8fa1a43964af901cb42aa48debc2b10.0144375 Ether
0xb3a79bf3dd37c3a619df4d46173d2b91847f962c17bb2c5dbfccb0a5f1494ba6599997213 mins ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x9d2ac7c3e17163f104e6abf5374f502b9f1db1020.000119389855650129 Ether
0xb3a79bf3dd37c3a619df4d46173d2b91847f962c17bb2c5dbfccb0a5f1494ba6599997213 mins ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x06012c8cf97bead5deae237070f9587f8e7a266d0.064690596630241485 Ether
0x673d81f6ef883e481d13ca2fe9f3972f7dbc74c3e1a6fb07071fe0077e6b281a599996913 mins ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0x6ded5b99945047bbab041586f97e59433fcb63090.000121797604662584 Ether
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0xf4fc1aee0077399553574bedb462615469dd64724653d8f2be646ff522c8ef83599996115 mins ago0xb1690c08e213a35ed9bab7b318de14420fb57d8c0xd387a6e4e84a6c86bd90c158c6028a58cc8ac4590.028875 Ether
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Contract Source Code Verified (Exact match)
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 <dete@axiomzen.co> (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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