Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

abstract contract DeadTickets {
  function ownerOf(uint tokenId) public virtual view returns (address);
  function balanceOf(address owner) external virtual view returns (uint balance);
  function burn(uint tokenId) public virtual;
}

contract DHVessel is ERC721, ERC721Enumerable, ERC721Burnable, EIP712, Ownable {
    using Counters for Counters.Counter;
    using Strings for uint256;
    
    Counters.Counter private _tokenIdCounter;
    
    string baseURI;
    
    IERC721 _deadHeads = IERC721(0x6fC355D4e0EE44b292E50878F49798ff755A5bbC);
    DeadTickets _deadTickets = DeadTickets(0x78f28143902e9346526933e3C2EdA2662d1cD1F7);
    address _signerAddress;
    
    mapping(uint => uint) public tokenToTokenType;
    
    event Evolve(uint dhTokenId, uint ticketId, uint newTokenId, address owner);

    constructor() ERC721("DeadHeads Vessels", "DeadVessels") EIP712("VESSEL", "1.0.0") {}

    function safeMint(address to) internal returns (uint) {
        uint newTokenId = _tokenIdCounter.current();
        _safeMint(to, newTokenId);
        _tokenIdCounter.increment();
        return newTokenId;
    }
    
    function onERC721Received(address operator, address, uint256, bytes calldata) external returns(bytes4) {
        require(operator == address(this));
        return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
    }
    
    function evolve(uint dhTokenId, uint ticketId, uint tokenType, bytes calldata signature) public {
        require(_deadHeads.ownerOf(dhTokenId) == msg.sender, "sender not own deadhead token");
        require(_deadTickets.ownerOf(ticketId) == msg.sender, "sender not own ticket token");
        require(_signerAddress == recoverAddress(msg.sender, tokenType, dhTokenId, ticketId, signature), "user cannot mint");
        
         _deadHeads.safeTransferFrom(msg.sender, address(this), dhTokenId);
         _deadTickets.burn(ticketId);
        
        uint newTokenId = safeMint(msg.sender);
        
        tokenToTokenType[newTokenId] = tokenType;
        
        emit Evolve(dhTokenId, ticketId, newTokenId, msg.sender);
    }
    
    function _hash(address account, uint tokenType, uint dhTokenId, uint ticketId) internal view returns (bytes32) {
        return
            _hashTypedDataV4(
                keccak256(
                    abi.encode(
                        keccak256("NFT(uint256 tokenType,uint256 dhTokenId,uint256 ticketId,address account)"),
                        tokenType,
                        dhTokenId,
                        ticketId,
                        account
                    )
                )
            );
    }

    function recoverAddress(address account, uint tokenType, uint dhTokenId, uint ticketId, bytes calldata signature) public view returns(address) {
        return ECDSA.recover(_hash(account, tokenType, dhTokenId, ticketId), signature);
    }
    
    function setSignerAddress(address signerAddress) external onlyOwner {
        _signerAddress = signerAddress;
    }
    
    function setBaseURI(string memory baseURI_) public onlyOwner {
        baseURI = baseURI_;
    }
    
    function tokenURI(uint256 tokenId) public view override returns (string memory) {
        require(_exists(tokenId), "query for non existent token");
        
        return string(abi.encodePacked(baseURI, tokenId.toString(), '?t=', tokenToTokenType[tokenId].toString()));
    }
                                                                                                                                                                                                                                                           
    function _beforeTokenTransfer(address from, address to, uint256 tokenId)
        internal
        override(ERC721, ERC721Enumerable)
    {
        super._beforeTokenTransfer(from, to, tokenId);
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721, ERC721Enumerable)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
    
    function withdrawDH(uint tokenId, address receiver) external onlyOwner {
        _deadHeads.safeTransferFrom(address(this), receiver, tokenId);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// 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 "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "../../../utils/Context.sol";

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721Burnable is Context, ERC721 {
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
        _burn(tokenId);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 27)
        }
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// 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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// 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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"dhTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"ticketId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newTokenId","type":"uint256"},{"indexed":false,"internalType":"address","name":"owner","type":"address"}],"name":"Evolve","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":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"dhTokenId","type":"uint256"},{"internalType":"uint256","name":"ticketId","type":"uint256"},{"internalType":"uint256","name":"tokenType","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"evolve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"tokenType","type":"uint256"},{"internalType":"uint256","name":"dhTokenId","type":"uint256"},{"internalType":"uint256","name":"ticketId","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"recoverAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI_","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"signerAddress","type":"address"}],"name":"setSignerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tokenToTokenType","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"withdrawDH","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0x608060405234801561001057600080fd5b50600436106101a95760003560e01c806355f804b3116100f9578063a22cb46511610097578063d5c8547311610071578063d5c8547314610394578063e985e9c5146103b4578063f2a0695a146103f0578063f2fde38b1461040357600080fd5b8063a22cb4651461035b578063b88d4fde1461036e578063c87b56dd1461038157600080fd5b806370a08231116100d357806370a0823114610327578063715018a61461033a5780638da5cb5b1461034257806395d89b411461035357600080fd5b806355f804b3146102ee5780636352211e14610301578063653b80371461031457600080fd5b8063150b7a02116101665780632f745c59116101405780632f745c59146102a257806342842e0e146102b557806342966c68146102c85780634f6ccce7146102db57600080fd5b8063150b7a021461025157806318160ddd1461027d57806323b872dd1461028f57600080fd5b806301ffc9a7146101ae578063046dc166146101d657806306fdde03146101eb57806307b612a014610200578063081812fc14610213578063095ea7b31461023e575b600080fd5b6101c16101bc3660046124a6565b610416565b60405190151581526020015b60405180910390f35b6101e96101e4366004612226565b610427565b005b6101f361047c565b6040516101cd91906126e9565b6101e961020e366004612542565b61050e565b610226610221366004612529565b6105a8565b6040516001600160a01b0390911681526020016101cd565b6101e961024c366004612407565b61063d565b61026461025f3660046122e1565b610753565b6040516001600160e01b031990911681526020016101cd565b6008545b6040519081526020016101cd565b6101e961029d3660046122a0565b610795565b6102816102b0366004612407565b6107c7565b6101e96102c33660046122a0565b61085d565b6101e96102d6366004612529565b610878565b6102816102e9366004612529565b6108f2565b6101e96102fc3660046124e0565b610985565b61022661030f366004612529565b6109c6565b610226610322366004612433565b610a3d565b610281610335366004612226565b610a95565b6101e9610b1c565b600a546001600160a01b0316610226565b6101f3610b52565b6101e96103693660046123d4565b610b61565b6101e961037c366004612354565b610c26565b6101f361038f366004612529565b610c5e565b6102816103a2366004612529565b60106020526000908152604090205481565b6101c16103c2366004612267565b6001600160a01b03918216600090815260056020908152604080832093909416825291909152205460ff1690565b6101e96103fe366004612567565b610d10565b6101e9610411366004612226565b611049565b6000610421826110e1565b92915050565b600a546001600160a01b0316331461045a5760405162461bcd60e51b81526004016104519061274e565b60405180910390fd5b600f80546001600160a01b0319166001600160a01b0392909216919091179055565b60606000805461048b90612843565b80601f01602080910402602001604051908101604052809291908181526020018280546104b790612843565b80156105045780601f106104d957610100808354040283529160200191610504565b820191906000526020600020905b8154815290600101906020018083116104e757829003601f168201915b5050505050905090565b600a546001600160a01b031633146105385760405162461bcd60e51b81526004016104519061274e565b600d54604051632142170760e11b81523060048201526001600160a01b03838116602483015260448201859052909116906342842e0e90606401600060405180830381600087803b15801561058c57600080fd5b505af11580156105a0573d6000803e3d6000fd5b505050505050565b6000818152600260205260408120546001600160a01b03166106215760405162461bcd60e51b815260206004820152602c60248201527f4552433732313a20617070726f76656420717565727920666f72206e6f6e657860448201526b34b9ba32b73a103a37b5b2b760a11b6064820152608401610451565b506000908152600460205260409020546001600160a01b031690565b6000610648826109c6565b9050806001600160a01b0316836001600160a01b031614156106b65760405162461bcd60e51b815260206004820152602160248201527f4552433732313a20617070726f76616c20746f2063757272656e74206f776e656044820152603960f91b6064820152608401610451565b336001600160a01b03821614806106d257506106d281336103c2565b6107445760405162461bcd60e51b815260206004820152603860248201527f4552433732313a20617070726f76652063616c6c6572206973206e6f74206f7760448201527f6e6572206e6f7220617070726f76656420666f7220616c6c00000000000000006064820152608401610451565b61074e8383611106565b505050565b60006001600160a01b038616301461076a57600080fd5b507f150b7a023d4804d13e8c85fb27262cb750cf6ba9f9dd3bb30d90f482ceeb4b1f95945050505050565b6107a0335b82611174565b6107bc5760405162461bcd60e51b815260040161045190612783565b61074e83838361126b565b60006107d283610a95565b82106108345760405162461bcd60e51b815260206004820152602b60248201527f455243373231456e756d657261626c653a206f776e657220696e646578206f7560448201526a74206f6620626f756e647360a81b6064820152608401610451565b506001600160a01b03919091166000908152600660209081526040808320938352929052205490565b61074e83838360405180602001604052806000815250610c26565b6108813361079a565b6108e65760405162461bcd60e51b815260206004820152603060248201527f4552433732314275726e61626c653a2063616c6c6572206973206e6f74206f7760448201526f1b995c881b9bdc88185c1c1c9bdd995960821b6064820152608401610451565b6108ef81611416565b50565b60006108fd60085490565b82106109605760405162461bcd60e51b815260206004820152602c60248201527f455243373231456e756d657261626c653a20676c6f62616c20696e646578206f60448201526b7574206f6620626f756e647360a01b6064820152608401610451565b6008828154811061097357610973612905565b90600052602060002001549050919050565b600a546001600160a01b031633146109af5760405162461bcd60e51b81526004016104519061274e565b80516109c290600c9060208401906120d5565b5050565b6000818152600260205260408120546001600160a01b0316806104215760405162461bcd60e51b815260206004820152602960248201527f4552433732313a206f776e657220717565727920666f72206e6f6e657869737460448201526832b73a103a37b5b2b760b91b6064820152608401610451565b6000610a8a610a4e888888886114bd565b84848080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525061153892505050565b979650505050505050565b60006001600160a01b038216610b005760405162461bcd60e51b815260206004820152602a60248201527f4552433732313a2062616c616e636520717565727920666f7220746865207a65604482015269726f206164647265737360b01b6064820152608401610451565b506001600160a01b031660009081526003602052604090205490565b600a546001600160a01b03163314610b465760405162461bcd60e51b81526004016104519061274e565b610b50600061155c565b565b60606001805461048b90612843565b6001600160a01b038216331415610bba5760405162461bcd60e51b815260206004820152601960248201527f4552433732313a20617070726f766520746f2063616c6c6572000000000000006044820152606401610451565b3360008181526005602090815260408083206001600160a01b03871680855290835292819020805460ff191686151590811790915590519081529192917f17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31910160405180910390a35050565b610c303383611174565b610c4c5760405162461bcd60e51b815260040161045190612783565b610c58848484846115ae565b50505050565b6000818152600260205260409020546060906001600160a01b0316610cc55760405162461bcd60e51b815260206004820152601c60248201527f717565727920666f72206e6f6e206578697374656e7420746f6b656e000000006044820152606401610451565b600c610cd0836115e1565b600084815260106020526040902054610ce8906115e1565b604051602001610cfa939291906125f3565b6040516020818303038152906040529050919050565b600d546040516331a9108f60e11b81526004810187905233916001600160a01b031690636352211e9060240160206040518083038186803b158015610d5457600080fd5b505afa158015610d68573d6000803e3d6000fd5b505050506040513d601f19601f82011682018060405250810190610d8c919061224a565b6001600160a01b031614610de25760405162461bcd60e51b815260206004820152601d60248201527f73656e646572206e6f74206f776e20646561646865616420746f6b656e0000006044820152606401610451565b600e546040516331a9108f60e11b81526004810186905233916001600160a01b031690636352211e9060240160206040518083038186803b158015610e2657600080fd5b505afa158015610e3a573d6000803e3d6000fd5b505050506040513d601f19601f82011682018060405250810190610e5e919061224a565b6001600160a01b031614610eb45760405162461bcd60e51b815260206004820152601b60248201527f73656e646572206e6f74206f776e207469636b657420746f6b656e00000000006044820152606401610451565b610ec2338487878686610a3d565b600f546001600160a01b03908116911614610f125760405162461bcd60e51b815260206004820152601060248201526f1d5cd95c8818d85b9b9bdd081b5a5b9d60821b6044820152606401610451565b600d54604051632142170760e11b8152336004820152306024820152604481018790526001600160a01b03909116906342842e0e90606401600060405180830381600087803b158015610f6457600080fd5b505af1158015610f78573d6000803e3d6000fd5b5050600e54604051630852cd8d60e31b8152600481018890526001600160a01b0390911692506342966c689150602401600060405180830381600087803b158015610fc257600080fd5b505af1158015610fd6573d6000803e3d6000fd5b505050506000610fe5336116df565b60008181526010602090815260409182902087905581518981529081018890529081018290523360608201529091507f2bb4f0e13c7ee794ed837899b1b358d8e2c989b189e3223f4fc98745c76abfd29060800160405180910390a1505050505050565b600a546001600160a01b031633146110735760405162461bcd60e51b81526004016104519061274e565b6001600160a01b0381166110d85760405162461bcd60e51b815260206004820152602660248201527f4f776e61626c653a206e6577206f776e657220697320746865207a65726f206160448201526564647265737360d01b6064820152608401610451565b6108ef8161155c565b60006001600160e01b0319821663780e9d6360e01b1480610421575061042182611705565b600081815260046020526040902080546001600160a01b0319166001600160a01b038416908117909155819061113b826109c6565b6001600160a01b03167f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b92560405160405180910390a45050565b6000818152600260205260408120546001600160a01b03166111ed5760405162461bcd60e51b815260206004820152602c60248201527f4552433732313a206f70657261746f7220717565727920666f72206e6f6e657860448201526b34b9ba32b73a103a37b5b2b760a11b6064820152608401610451565b60006111f8836109c6565b9050806001600160a01b0316846001600160a01b031614806112335750836001600160a01b0316611228846105a8565b6001600160a01b0316145b8061126357506001600160a01b0380821660009081526005602090815260408083209388168352929052205460ff165b949350505050565b826001600160a01b031661127e826109c6565b6001600160a01b0316146112e65760405162461bcd60e51b815260206004820152602960248201527f4552433732313a207472616e73666572206f6620746f6b656e2074686174206960448201526839903737ba1037bbb760b91b6064820152608401610451565b6001600160a01b0382166113485760405162461bcd60e51b8152602060048201526024808201527f4552433732313a207472616e7366657220746f20746865207a65726f206164646044820152637265737360e01b6064820152608401610451565b611353838383611755565b61135e600082611106565b6001600160a01b0383166000908152600360205260408120805460019290611387908490612800565b90915550506001600160a01b03821660009081526003602052604081208054600192906113b59084906127d4565b909155505060008181526002602052604080822080546001600160a01b0319166001600160a01b0386811691821790925591518493918716917fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef91a4505050565b6000611421826109c6565b905061142f81600084611755565b61143a600083611106565b6001600160a01b0381166000908152600360205260408120805460019290611463908490612800565b909155505060008281526002602052604080822080546001600160a01b0319169055518391906001600160a01b038416907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef908390a45050565b604080517f41bf0f37c6061f9dbc453cd8e7fdb649fa89fbbcefd4cfbe20f49a7b4ced5dc5602082015290810184905260608101839052608081018290526001600160a01b03851660a082015260009061152f9060c00160405160208183030381529060405280519060200120611760565b95945050505050565b600080600061154785856117ae565b915091506115548161181e565b509392505050565b600a80546001600160a01b038381166001600160a01b0319831681179093556040519116919082907f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e090600090a35050565b6115b984848461126b565b6115c5848484846119d9565b610c585760405162461bcd60e51b8152600401610451906126fc565b6060816116055750506040805180820190915260018152600360fc1b602082015290565b8160005b811561162f57806116198161287e565b91506116289050600a836127ec565b9150611609565b60008167ffffffffffffffff81111561164a5761164a61291b565b6040519080825280601f01601f191660200182016040528015611674576020820181803683370190505b5090505b841561126357611689600183612800565b9150611696600a86612899565b6116a19060306127d4565b60f81b8183815181106116b6576116b6612905565b60200101906001600160f81b031916908160001a9053506116d8600a866127ec565b9450611678565b6000806116eb600b5490565b90506116f78382611ae3565b610421600b80546001019055565b60006001600160e01b031982166380ac58cd60e01b148061173657506001600160e01b03198216635b5e139f60e01b145b8061042157506301ffc9a760e01b6001600160e01b0319831614610421565b61074e838383611afd565b600061042161176d611bb5565b8360405161190160f01b6020820152602281018390526042810182905260009060620160405160208183030381529060405280519060200120905092915050565b6000808251604114156117e55760208301516040840151606085015160001a6117d987828585611ca8565b94509450505050611817565b82516040141561180f5760208301516040840151611804868383611d95565b935093505050611817565b506000905060025b9250929050565b6000816004811115611832576118326128d9565b141561183b5750565b600181600481111561184f5761184f6128d9565b141561189d5760405162461bcd60e51b815260206004820152601860248201527f45434453413a20696e76616c6964207369676e617475726500000000000000006044820152606401610451565b60028160048111156118b1576118b16128d9565b14156118ff5760405162461bcd60e51b815260206004820152601f60248201527f45434453413a20696e76616c6964207369676e6174757265206c656e677468006044820152606401610451565b6003816004811115611913576119136128d9565b141561196c5760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202773272076616c604482015261756560f01b6064820152608401610451565b6004816004811115611980576119806128d9565b14156108ef5760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202776272076616c604482015261756560f01b6064820152608401610451565b60006001600160a01b0384163b15611adb57604051630a85bd0160e11b81526001600160a01b0385169063150b7a0290611a1d9033908990889088906004016126b6565b602060405180830381600087803b158015611a3757600080fd5b505af1925050508015611a67575060408051601f3d908101601f19168201909252611a64918101906124c3565b60015b611ac1573d808015611a95576040519150601f19603f3d011682016040523d82523d6000602084013e611a9a565b606091505b508051611ab95760405162461bcd60e51b8152600401610451906126fc565b805181602001fd5b6001600160e01b031916630a85bd0160e11b149050611263565b506001611263565b6109c2828260405180602001604052806000815250611dc4565b6001600160a01b038316611b5857611b5381600880546000838152600960205260408120829055600182018355919091527ff3f7a9fe364faab93b216da50a3214154f22a0a2b415b23a84c8169e8b636ee30155565b611b7b565b816001600160a01b0316836001600160a01b031614611b7b57611b7b8382611df7565b6001600160a01b038216611b925761074e81611e94565b826001600160a01b0316826001600160a01b03161461074e5761074e8282611f43565b60007f0000000000000000000000000000000000000000000000000000000000000001461415611c0457507f0a93f9e79a1e05e1fe9b0cea0dfb4096bdd916efcf8110378212aed8bc37f01290565b50604080517f8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f6020808301919091527ff8e89fcf8e938a7c04c644d1bdddcdc50c8aa8449b8125a3db96fb1dc5e37e50828401527f06c015bd22b4c69690933c1058878ebdfef31f9aaae40bbe86d8a09fe1b2972c60608301524660808301523060a0808401919091528351808403909101815260c0909201909252805191012090565b6000807f7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a0831115611cdf5750600090506003611d8c565b8460ff16601b14158015611cf757508460ff16601c14155b15611d085750600090506004611d8c565b6040805160008082526020820180845289905260ff881692820192909252606081018690526080810185905260019060a0016020604051602081039080840390855afa158015611d5c573d6000803e3d6000fd5b5050604051601f1901519150506001600160a01b038116611d8557600060019250925050611d8c565b9150600090505b94509492505050565b6000806001600160ff1b03831660ff84901c601b01611db687828885611ca8565b935093505050935093915050565b611dce8383611f87565b611ddb60008484846119d9565b61074e5760405162461bcd60e51b8152600401610451906126fc565b60006001611e0484610a95565b611e0e9190612800565b600083815260076020526040902054909150808214611e61576001600160a01b03841660009081526006602090815260408083208584528252808320548484528184208190558352600790915290208190555b5060009182526007602090815260408084208490556001600160a01b039094168352600681528383209183525290812055565b600854600090611ea690600190612800565b60008381526009602052604081205460088054939450909284908110611ece57611ece612905565b906000526020600020015490508060088381548110611eef57611eef612905565b6000918252602080832090910192909255828152600990915260408082208490558582528120556008805480611f2757611f276128ef565b6001900381819060005260206000200160009055905550505050565b6000611f4e83610a95565b6001600160a01b039093166000908152600660209081526040808320868452825280832085905593825260079052919091209190915550565b6001600160a01b038216611fdd5760405162461bcd60e51b815260206004820181905260248201527f4552433732313a206d696e7420746f20746865207a65726f20616464726573736044820152606401610451565b6000818152600260205260409020546001600160a01b0316156120425760405162461bcd60e51b815260206004820152601c60248201527f4552433732313a20746f6b656e20616c7265616479206d696e746564000000006044820152606401610451565b61204e60008383611755565b6001600160a01b03821660009081526003602052604081208054600192906120779084906127d4565b909155505060008181526002602052604080822080546001600160a01b0319166001600160a01b03861690811790915590518392907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef908290a45050565b8280546120e190612843565b90600052602060002090601f0160209004810192826121035760008555612149565b82601f1061211c57805160ff1916838001178555612149565b82800160010185558215612149579182015b8281111561214957825182559160200191906001019061212e565b50612155929150612159565b5090565b5b80821115612155576000815560010161215a565b600067ffffffffffffffff808411156121895761218961291b565b604051601f8501601f19908116603f011681019082821181831017156121b1576121b161291b565b816040528093508581528686860111156121ca57600080fd5b858560208301376000602087830101525050509392505050565b60008083601f8401126121f657600080fd5b50813567ffffffffffffffff81111561220e57600080fd5b60208301915083602082850101111561181757600080fd5b60006020828403121561223857600080fd5b813561224381612931565b9392505050565b60006020828403121561225c57600080fd5b815161224381612931565b6000806040838503121561227a57600080fd5b823561228581612931565b9150602083013561229581612931565b809150509250929050565b6000806000606084860312156122b557600080fd5b83356122c081612931565b925060208401356122d081612931565b929592945050506040919091013590565b6000806000806000608086880312156122f957600080fd5b853561230481612931565b9450602086013561231481612931565b935060408601359250606086013567ffffffffffffffff81111561233757600080fd5b612343888289016121e4565b969995985093965092949392505050565b6000806000806080858703121561236a57600080fd5b843561237581612931565b9350602085013561238581612931565b925060408501359150606085013567ffffffffffffffff8111156123a857600080fd5b8501601f810187136123b957600080fd5b6123c88782356020840161216e565b91505092959194509250565b600080604083850312156123e757600080fd5b82356123f281612931565b91506020830135801515811461229557600080fd5b6000806040838503121561241a57600080fd5b823561242581612931565b946020939093013593505050565b60008060008060008060a0878903121561244c57600080fd5b863561245781612931565b9550602087013594506040870135935060608701359250608087013567ffffffffffffffff81111561248857600080fd5b61249489828a016121e4565b979a9699509497509295939492505050565b6000602082840312156124b857600080fd5b813561224381612946565b6000602082840312156124d557600080fd5b815161224381612946565b6000602082840312156124f257600080fd5b813567ffffffffffffffff81111561250957600080fd5b8201601f8101841361251a57600080fd5b6112638482356020840161216e565b60006020828403121561253b57600080fd5b5035919050565b6000806040838503121561255557600080fd5b82359150602083013561229581612931565b60008060008060006080868803121561257f57600080fd5b853594506020860135935060408601359250606086013567ffffffffffffffff81111561233757600080fd5b600081518084526125c3816020860160208601612817565b601f01601f19169290920160200192915050565b600081516125e9818560208601612817565b9290920192915050565b600080855481600182811c91508083168061260f57607f831692505b602080841082141561262f57634e487b7160e01b86526022600452602486fd5b818015612643576001811461265457612681565b60ff19861689528489019650612681565b60008c81526020902060005b868110156126795781548b820152908501908301612660565b505084890196505b5050505050506126ac6126a661269783886125d7565b623f743d60e81b815260030190565b856125d7565b9695505050505050565b6001600160a01b03858116825284166020820152604081018390526080606082018190526000906126ac908301846125ab565b60208152600061224360208301846125ab565b60208082526032908201527f4552433732313a207472616e7366657220746f206e6f6e20455243373231526560408201527131b2b4bb32b91034b6b83632b6b2b73a32b960711b606082015260800190565b6020808252818101527f4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e6572604082015260600190565b60208082526031908201527f4552433732313a207472616e736665722063616c6c6572206973206e6f74206f6040820152701ddb995c881b9bdc88185c1c1c9bdd9959607a1b606082015260800190565b600082198211156127e7576127e76128ad565b500190565b6000826127fb576127fb6128c3565b500490565b600082821015612812576128126128ad565b500390565b60005b8381101561283257818101518382015260200161281a565b83811115610c585750506000910152565b600181811c9082168061285757607f821691505b6020821081141561287857634e487b7160e01b600052602260045260246000fd5b50919050565b6000600019821415612892576128926128ad565b5060010190565b6000826128a8576128a86128c3565b500690565b634e487b7160e01b600052601160045260246000fd5b634e487b7160e01b600052601260045260246000fd5b634e487b7160e01b600052602160045260246000fd5b634e487b7160e01b600052603160045260246000fd5b634e487b7160e01b600052603260045260246000fd5b634e487b7160e01b600052604160045260246000fd5b6001600160a01b03811681146108ef57600080fd5b6001600160e01b0319811681146108ef57600080fdfea264697066735822122032dd879780fc1bbf54c6712ce5dc29119f567ca283f3ede6d2956198c520317464736f6c63430008070033