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// SPDX-License-Identifier: Apache-2.0

pragma solidity 0.8.9; // code below expects that integer overflows will revert

import "./Vendor/openzeppelin-contracts-3dadd40034961d5ca75fa209a4188b01d7129501/token/ERC721/IERC721.sol";
import "./Vendor/openzeppelin-contracts-3dadd40034961d5ca75fa209a4188b01d7129501/access/Ownable.sol";
import "./Utilities/Withdrawable.sol";

/// @title  Area marketplace contract, 🌐 the earth on the blockchain, 📌 geolocation NFTs
/// @notice This decentralized marketplace matches bids and offers for one underlying ERC-721 contract. With much
///         respect to CryptoPunks. Your offers & bids on this marketplace will close only if matched on this
///         marketplace. If you trade anywhere else, consider to revoke your offers & bids here.
/// @author William Entriken
contract NFTMarketplace is Ownable, Withdrawable {
    struct TokenMarket {
        address offeror;       // The token owner that is selling
        uint256 minimumOffer;  // The amount (in Wei) that is the minimum to accept; or zero to indicate no offer
        address invitedBidder; // The exclusive invited buyer for this offer; or the zero address if not exclusive

        address bidder;        // The party that committed Ether to bid
        uint256 lockedBid;     // The amount (in Wei) that the bidder has committed
    }

    /// @notice The underlying asset contract
    IERC721 immutable public tokenContract;

    /// @notice The transaction fee (in basis points) as a portion of the sale price
    uint256 public feePortion;

    /// @notice The best bids and offers for any token
    mapping(uint256 => TokenMarket) public tokenMarkets;

    /// @notice A token is offered for sale by owner; or such an offer is revoked
    /// @param  tokenId       which token
    /// @param  offeror       the token owner that is selling
    /// @param  minimumOffer  the amount (in Wei) that is the minimum to accept; or zero to indicate no offer
    /// @param  invitedBidder the exclusive invited buyer for this offer; or the zero address if not exclusive
    event OfferUpdated(uint256 indexed tokenId, address offeror, uint256 minimumOffer, address invitedBidder);

    /// @notice A new highest bid is committed for a token; or such a bid is revoked
    /// @param  tokenId   which token
    /// @param  bidder    the party that committed Ether to bid
    /// @param  lockedBid the amount (in Wei) that the bidder has committed
    event BidUpdated(uint256 indexed tokenId, address bidder, uint256 lockedBid);

    /// @notice A token is traded on the marketplace (this implies any offer for the token is revoked)
    /// @param  tokenId which token
    /// @param  value   the sale price
    /// @param  offeror the party that previously owned the token
    /// @param  bidder  the party that now owns the token
    event Traded(uint256 indexed tokenId, uint256 value, address indexed offeror, address indexed bidder);

    /// @param initialFeePortion         the transaction fee (in basis points) as a portion of the sale price
    /// @param immutableNftTokenContract the underlying NFT asset
    constructor(uint256 initialFeePortion, IERC721 immutableNftTokenContract) {
        feePortion = initialFeePortion;
        tokenContract = immutableNftTokenContract;
    }

    /// @notice An offeror may revoke their offer
    /// @dev    It is possible that a token will change owners without this contract being notified (e.g. an ERC-721
    ///         "gift" transaction). In this case the old owner who made an offer needs, and gets, a way to revoke that.
    ///         There is no reason why the new owner of a token would need to revoke the prior owner's ineffectual
    ///         offer. But we provide this option anyway because we recognize the token market to be the prerogative of
    ///         that token's owner.
    /// @param  tokenId which token
    function revokeOffer(uint256 tokenId) external {
        require(
            (msg.sender == tokenMarkets[tokenId].offeror) ||
            (msg.sender == tokenContract.ownerOf(tokenId)),
            "Only the offeror or token owner may revoke an offer"
        );
        _setOffer(tokenId, address(0), 0, address(0));
    }

    /// @notice Any token owner may offer it for sale
    /// @dev    If a bid comes which is higher than the offer then the sale price will be this higher amount.
    /// @param  tokenId       which token
    /// @param  minimumOffer  the amount (in Wei) that is the minimum to accept
    /// @param  invitedBidder the exclusive invited buyer for this offer; or the zero address if not exclusive
    function offer(uint256 tokenId, uint256 minimumOffer, address invitedBidder) external {
        require(msg.sender == tokenContract.ownerOf(tokenId), "Only the token owner can offer");
        require(minimumOffer > 0, "Ask for more");
        address bidder = tokenMarkets[tokenId].bidder;
        uint256 lockedBid = tokenMarkets[tokenId].lockedBid;
        bool isInvited = invitedBidder == address(0) || invitedBidder == bidder;

        // Can we match this offer to an existing bid?
        if (lockedBid >= minimumOffer && isInvited) {
            _doTrade(tokenId, lockedBid, msg.sender, bidder);
            _setBid(tokenId, address(0), 0);
        } else {
            _setOffer(tokenId, msg.sender, minimumOffer, invitedBidder);
        }
    }

    /// @notice An bidder may revoke their bid
    /// @param  tokenId which token
    function revokeBid(uint256 tokenId) external {
        require(msg.sender == tokenMarkets[tokenId].bidder, "Only the bidder may revoke their bid");
        _increasePendingWithdrawal(msg.sender, tokenMarkets[tokenId].lockedBid);
        _setBid(tokenId, address(0), 0);
    }

    /// @notice Anyone may commit more than the existing bid for a token.
    /// @dev    When reading the below, note there are three important contexts to consider:
    ///          1. There is no existing bidder
    ///          2. The message caller is the highest bidder
    ///          3. Somebody else is the highest bidder
    ///         when you submit this transaction and when it settles.
    /// @param  tokenId which token
    function bid(uint256 tokenId) external payable {
        uint256 existingLockedBid = tokenMarkets[tokenId].lockedBid;
        require(msg.value > existingLockedBid, "Bid too low");
        address existingBidder = tokenMarkets[tokenId].bidder;
        uint256 minimumOffer = tokenMarkets[tokenId].minimumOffer;
        address invitedBidder = tokenMarkets[tokenId].invitedBidder;
        address offeror = tokenMarkets[tokenId].offeror;
        bool isInvited = invitedBidder == address(0) || invitedBidder == msg.sender;

        // Can we match this bid to an existing offer?
        if (minimumOffer > 0 &&
            msg.value >= minimumOffer &&
            isInvited &&
            offeror == tokenContract.ownerOf(tokenId)) {
            _doTrade(tokenId, msg.value, offeror, msg.sender);
            if (existingBidder == msg.sender) {
                // This is context 2
                _increasePendingWithdrawal(msg.sender, existingLockedBid);
                _setBid(tokenId, address(0), 0);
            }
        } else {
            // Wind up old bid, if any
            if (existingLockedBid > 0) {
                // This is context 2 or 3
                _increasePendingWithdrawal(existingBidder, existingLockedBid);
            }
            // Enter new bid
            _setBid(tokenId, msg.sender, msg.value);
        }
    }

    /// @notice Anyone may add more value to their existing bid
    /// @param  tokenId which token
    function bidIncrease(uint256 tokenId) external payable {
        require(msg.value > 0, "Must send value to increase bid");
        require(msg.sender == tokenMarkets[tokenId].bidder, "You are not current bidder");
        uint256 newBidAmount = tokenMarkets[tokenId].lockedBid + msg.value;
        uint256 minimumOffer = tokenMarkets[tokenId].minimumOffer;
        address invitedBidder = tokenMarkets[tokenId].invitedBidder;
        address offeror = tokenMarkets[tokenId].offeror;
        bool isInvited = invitedBidder == address(0) || invitedBidder == msg.sender;

        // Can we match this bid to an existing offer?
        if (minimumOffer > 0 &&
            newBidAmount >= minimumOffer &&
            isInvited &&
            offeror == tokenContract.ownerOf(tokenId)) {
            _doTrade(tokenId, newBidAmount, offeror, msg.sender);
            _setBid(tokenId, address(0), 0);
        } else {
            tokenMarkets[tokenId].lockedBid = newBidAmount;
            _setBid(tokenId, msg.sender, newBidAmount);
        }
    }

    /// @notice The owner can set the fee portion
    /// @param  newFeePortion the transaction fee (in basis points) as a portion of the sale price
    function setFeePortion(uint256 newFeePortion) external onlyOwner {
        require(newFeePortion <= 1000, "Exceeded maximum fee portion of 10%");
        feePortion = newFeePortion;
    }

    /// @dev Collect fee for owner & offeror and transfer underlying asset. The Traded event emits before the
    ///      ERC721.Transfer event so that somebody observing the events and seeing the latter will recognize the
    ///      context of the former. The bid is NOT cleaned up generally in this function because a circumstance exists
    ///      where an existing bid persists after a trade. See "context 3" above.
    function _doTrade(uint256 tokenId, uint256 value, address offeror, address bidder) private {
        // Divvy up proceeds
        uint256 feeAmount = value * feePortion / 10000; // reverts on overflow
        _increasePendingWithdrawal(Ownable.owner(), feeAmount);
        _increasePendingWithdrawal(offeror, value - feeAmount);

        emit Traded(tokenId, value, offeror, bidder);
        tokenMarkets[tokenId].offeror = address(0);
        tokenMarkets[tokenId].minimumOffer = 0;
        tokenMarkets[tokenId].invitedBidder = address(0);
        tokenContract.transferFrom(offeror, bidder, tokenId);
    }

    /// @dev Set and emit new offer
    function _setOffer(uint256 tokenId, address offeror, uint256 minimumOffer, address invitedBidder) private {
        tokenMarkets[tokenId].offeror = offeror;
        tokenMarkets[tokenId].minimumOffer = minimumOffer;
        tokenMarkets[tokenId].invitedBidder = invitedBidder;
        emit OfferUpdated(tokenId, offeror, minimumOffer, invitedBidder);
    }

    /// @dev Set and emit new bid
    function _setBid(uint256 tokenId, address bidder, uint256 lockedBid) private {
        tokenMarkets[tokenId].bidder = bidder;
        tokenMarkets[tokenId].lockedBid = lockedBid;
        emit BidUpdated(tokenId, bidder, lockedBid);
    }
}

// SPDX-License-Identifier: Apache-2.0

pragma solidity 0.8.9; // code below expects that integer overflows will revert

/// @title  Part of Area, 🌐 the earth on the blockchain, 📌 geolocation NFTs
/// @notice This Ether accounting system stores value inside this contract and makes it available for beneficiaries to
///         withdraw.
/// @author William Entriken
contract Withdrawable {
    /// @notice Ether waiting for beneficiaries to withdraw
    mapping(address => uint256) private _pendingWithdrawals;

    /// @notice Amount of Ether waiting for beneficiaries to withdraw is updated
    /// @param  beneficiary which beneficiary can withdraw
    /// @param  amount      amount (in Wei) that is pending withdrawal
    event PendingWithdrawal(address beneficiary, uint256 amount);

    /// @notice Beneficiaries can withdraw any Ether held for them
    function withdraw() external {
        uint256 amountToWithdraw = _pendingWithdrawals[msg.sender];
        // Remember to zero the pending refund before sending to prevent re-entrancy attacks
        delete _pendingWithdrawals[msg.sender];
        payable(msg.sender).transfer(amountToWithdraw);
        emit PendingWithdrawal(msg.sender, 0);
    }

    /// @notice Gets amount of Ether waiting for beneficiary to withdraw
    /// @param  beneficiary which beneficiary is queried
    /// @return amount      how much the beneficiary can withdraw
    function pendingWithdrawal(address beneficiary) public view returns (uint256 amount) {
        return _pendingWithdrawals[beneficiary];
    }

    /// @notice Amount of Ether waiting for beneficiaries to withdraw is increased
    /// @param  beneficiary which beneficiary can withdraw
    /// @param  amount      amount (in Wei) that is pending withdrawal
    function _increasePendingWithdrawal(address beneficiary, uint256 amount) internal {
        _pendingWithdrawals[beneficiary] += amount;
        emit PendingWithdrawal(beneficiary, _pendingWithdrawals[beneficiary]);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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[{"inputs":[{"internalType":"uint256","name":"initialFeePortion","type":"uint256"},{"internalType":"contract IERC721","name":"immutableNftTokenContract","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"bidder","type":"address"},{"indexed":false,"internalType":"uint256","name":"lockedBid","type":"uint256"}],"name":"BidUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"offeror","type":"address"},{"indexed":false,"internalType":"uint256","name":"minimumOffer","type":"uint256"},{"indexed":false,"internalType":"address","name":"invitedBidder","type":"address"}],"name":"OfferUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PendingWithdrawal","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":true,"internalType":"address","name":"offeror","type":"address"},{"indexed":true,"internalType":"address","name":"bidder","type":"address"}],"name":"Traded","type":"event"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"bid","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"bidIncrease","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"feePortion","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"minimumOffer","type":"uint256"},{"internalType":"address","name":"invitedBidder","type":"address"}],"name":"offer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"beneficiary","type":"address"}],"name":"pendingWithdrawal","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"revokeBid","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"revokeOffer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newFeePortion","type":"uint256"}],"name":"setFeePortion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"tokenContract","outputs":[{"internalType":"contract IERC721","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tokenMarkets","outputs":[{"internalType":"address","name":"offeror","type":"address"},{"internalType":"uint256","name":"minimumOffer","type":"uint256"},{"internalType":"address","name":"invitedBidder","type":"address"},{"internalType":"address","name":"bidder","type":"address"},{"internalType":"uint256","name":"lockedBid","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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00000000000000000000000000000000000000000000000000000000000001f4000000000000000000000000f85c6320cc60dec45af1f7ce82b13dd24d539690

-----Decoded View---------------
Arg [0] : initialFeePortion (uint256): 500
Arg [1] : immutableNftTokenContract (address): 0xf85c6320cc60DEC45Af1f7cE82B13dd24D539690

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000001f4
Arg [1] : 000000000000000000000000f85c6320cc60dec45af1f7ce82b13dd24d539690