Contract 0xc141C6452D8bC229E56aD2EE90cbbb7b0feA531b

 
 
Txn Hash
Method
Block
From
To
Value
0x527773cd8d67d79dcdd9037f937fdd82d9346d1f5c1610a82d4f8c0fd066d0c2Transfer From146544842022-04-25 15:07:23214 days 21 hrs agoENS Name platen.eth IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00370779 61.45950661
0x488a3bd36ed3c52a58fea10b4c2c01937ecfaecf558e90054150a4b735a7bee3Mint And Approve143458552022-03-08 11:12:47263 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00294335 17.99590818
0x860b597b1dee817c4c9cb3ffff740bb44b9bdbaad4490f2ec320a8d6539a01e1Mint And Approve143458302022-03-08 11:06:56263 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00308609 18.86865
0x29d667439ba191fd928b1d85aaff80d4e53854eefab2679ae3649db062a79d11Mint And Approve143458172022-03-08 11:04:45263 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.0030346 18.55383134
0xe7d1d3a4a85557fbb0bcf3a45c4133b79e937d3464b75d671db3ad485c75643fMint And Approve143458062022-03-08 11:03:23263 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00330337 20.19708012
0x5ffd82bc688ca84dbb93b0b84e15a98b2e128c9ee9c60d5d89935da8c02e4c0fMint And Approve143457452022-03-08 10:47:00263 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00300547 18.37569852
0x1bcefe468b2eb406dbdbc1621f101974fa9ca6077b0a0316e6e999134336505cBurn143336982022-03-06 13:51:14264 days 22 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00115644 21.41648774
0x341db9dbca5045e4b480829b04cd5c4580cd52ebc14140accc425d4ebe1f30d5Mint And Approve141711382022-02-09 9:37:58290 days 2 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00579891 35.45502047
0xb6584427fe89356869422ed6add455bcc848375321c08fbb61b9f3b8a02d25a0Mint And Approve141390452022-02-04 10:47:07295 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00960614 58.73270962
0x5923f299b3e91888178d2f19ac5c84eed2fbb45a8f25f3881bf0f28bb9046a49Mint And Approve137841932021-12-11 13:41:07349 days 22 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00622534 38.06221501
0x61e1677eb1f3deb828bb764457bb1ffd690a0f5ba90521b24aa5fd9e083533eaMint And Approve137769222021-12-10 10:44:38351 days 1 hr ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.0076261 46.62656752
0x9a9bfc62764001cde926f025daa0b523b2567f6225090cbf9053461bc1f434edMint And Approve137648072021-12-08 12:29:43352 days 23 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00778569 47.60235752
0x6c9e1a3d95fb774aa1af97e57fc7472ad13457ec7832e7f5ac40a8395b2e5672Mint And Approve137647872021-12-08 12:25:35353 days 3 mins ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.00938868 51.96969903
0xa2f3b4bb745c5cd3eea5a7409390827936f095216ad181fa08111e648313644fMint And Approve137593042021-12-07 15:25:09353 days 21 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.01249526 69.16567346
0x176204f4ea33e02359e512a7b2eaa8a4b201808d4d430dfcc1fa1502d72bfc0cMint And Approve137590802021-12-07 14:34:00353 days 21 hrs ago0x4e613dd3e9a86129ac8aa767609565fa37fe604b IN  0xc141c6452d8bc229e56ad2ee90cbbb7b0fea531b0 Ether0.01414913 65.00657728
[ Download CSV Export 
Latest 1 internal transaction
Parent Txn Hash Block From To Value
0x5f5868de2c7f5cfbc3446c9d163ca827e9c8f7900bf3e6f0b7fb7bfd1a258f14137587522021-12-07 13:20:32353 days 23 hrs ago Foundation: Collection Factory  Contract Creation0 Ether
[ Download CSV Export 
Loading

Minimal Proxy Contract for 0x331c421106619d4217d41c3e073b1e64f4974563

Contract Name:
CollectionContract

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 1337 runs

Other Settings:
default evmVersion
Decompile ByteCode

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 28 : CollectionContract.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable-solc-8/token/ERC721/extensions/ERC721BurnableUpgradeable.sol";
import "@openzeppelin/contracts-solc-8/utils/Address.sol";

import "./interfaces/solc8/ICollectionContractInitializer.sol";
import "./interfaces/solc8/ICollectionFactory.sol";
import "./interfaces/solc8/IGetRoyalties.sol";
import "./interfaces/solc8/IProxyCall.sol";
import "./interfaces/solc8/ITokenCreator.sol";
import "./interfaces/solc8/ITokenCreatorPaymentAddress.sol";
import "./interfaces/solc8/IGetFees.sol";

import "./libraries/solc8/AccountMigration.sol";
import "./libraries/solc8/ProxyCall.sol";
import "./libraries/solc8/BytesLibrary.sol";

/**
 * @title A collection of NFTs.
 * @notice All NFTs from this contract are minted by the same creator.
 * A 10% royalty to the creator is included which may be split with collaborators.
 */
contract CollectionContract is
  ICollectionContractInitializer,
  IGetRoyalties,
  IGetFees,
  ITokenCreator,
  ITokenCreatorPaymentAddress,
  ERC721BurnableUpgradeable
{
  using AccountMigration for address;
  using Address for address;
  using BytesLibrary for bytes;
  using ProxyCall for IProxyCall;

  uint256 private constant ROYALTY_IN_BASIS_POINTS = 1000;

  /**
   * @notice The baseURI to use for the tokenURI, if undefined then `ipfs://` is used.
   */
  string private baseURI_;

  /**
   * @dev Stores hashes minted to prevent duplicates.
   */
  mapping(string => bool) private cidToMinted;

  /**
   * @notice The factory which was used to create this collection.
   * @dev This is used to read common config.
   */
  ICollectionFactory public immutable collectionFactory;

  /**
   * @notice The tokenId of the most recently created NFT.
   * @dev Minting starts at tokenId 1. Each mint will use this value + 1.
   */
  uint256 public latestTokenId;

  /**
   * @notice The max tokenId which can be minted, or 0 if there's no limit.
   * @dev This value may be set at any time, but once set it cannot be increased.
   */
  uint256 public maxTokenId;

  /**
   * @notice The owner/creator of this NFT collection.
   */
  address payable public owner;

  /**
   * @dev Stores an optional alternate address to receive creator revenue and royalty payments.
   * The target address may be a contract which could split or escrow payments.
   */
  mapping(uint256 => address payable) private tokenIdToCreatorPaymentAddress;

  /**
   * @dev Stores a CID for each NFT.
   */
  mapping(uint256 => string) private _tokenCIDs;

  event BaseURIUpdated(string baseURI);
  event CreatorMigrated(address indexed originalAddress, address indexed newAddress);
  event MaxTokenIdUpdated(uint256 indexed maxTokenId);
  event Minted(address indexed creator, uint256 indexed tokenId, string indexed indexedTokenCID, string tokenCID);
  event NFTOwnerMigrated(uint256 indexed tokenId, address indexed originalAddress, address indexed newAddress);
  event PaymentAddressMigrated(
    uint256 indexed tokenId,
    address indexed originalAddress,
    address indexed newAddress,
    address originalPaymentAddress,
    address newPaymentAddress
  );
  event TokenCreatorPaymentAddressSet(
    address indexed fromPaymentAddress,
    address indexed toPaymentAddress,
    uint256 indexed tokenId
  );

  modifier onlyOwner() {
    require(msg.sender == owner, "CollectionContract: Caller is not owner");
    _;
  }

  modifier onlyOperator() {
    require(collectionFactory.rolesContract().isOperator(msg.sender), "CollectionContract: Caller is not an operator");
    _;
  }

  /**
   * @dev The constructor for a proxy can only be used to assign immutable variables.
   */
  constructor(address _collectionFactory) {
    require(_collectionFactory.isContract(), "CollectionContract: collectionFactory is not a contract");
    collectionFactory = ICollectionFactory(_collectionFactory);
  }

  /**
   * @notice Called by the factory on creation.
   * @dev This may only be called once.
   */
  function initialize(
    address payable _creator,
    string memory _name,
    string memory _symbol
  ) external {
    require(msg.sender == address(collectionFactory), "CollectionContract: Collection must be created via the factory");

    __ERC721_init_unchained(_name, _symbol);

    owner = _creator;
  }

  /**
   * @notice Allows the owner to mint an NFT defined by its metadata path.
   */
  function mint(string memory tokenCID) public returns (uint256 tokenId) {
    tokenId = _mint(tokenCID);
  }

  /**
   * @notice Allows the owner to mint and sets approval for all for the provided operator.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintAndApprove(string memory tokenCID, address operator) public returns (uint256 tokenId) {
    tokenId = _mint(tokenCID);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address.
   */
  function mintWithCreatorPaymentAddress(string memory tokenCID, address payable tokenCreatorPaymentAddress)
    public
    returns (uint256 tokenId)
  {
    require(tokenCreatorPaymentAddress != address(0), "CollectionContract: tokenCreatorPaymentAddress is required");
    tokenId = mint(tokenCID);
    _setTokenCreatorPaymentAddress(tokenId, tokenCreatorPaymentAddress);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address.
   * Also sets approval for all for the provided operator.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintWithCreatorPaymentAddressAndApprove(
    string memory tokenCID,
    address payable tokenCreatorPaymentAddress,
    address operator
  ) public returns (uint256 tokenId) {
    tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address
   * which is defined by a contract call, typically a proxy contract address representing the payment terms.
   * @param paymentAddressFactory The contract to call which will return the address to use for payments.
   * @param paymentAddressCallData The call details to sent to the factory provided.
   */
  function mintWithCreatorPaymentFactory(
    string memory tokenCID,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData
  ) public returns (uint256 tokenId) {
    address payable tokenCreatorPaymentAddress = collectionFactory
      .proxyCallContract()
      .proxyCallAndReturnContractAddress(paymentAddressFactory, paymentAddressCallData);
    tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress);
  }

  /**
   * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address
   * which is defined by a contract call, typically a proxy contract address representing the payment terms.
   * Also sets approval for all for the provided operator.
   * @param paymentAddressFactory The contract to call which will return the address to use for payments.
   * @param paymentAddressCallData The call details to sent to the factory provided.
   * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval
   * transaction before starting an auction.
   */
  function mintWithCreatorPaymentFactoryAndApprove(
    string memory tokenCID,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    address operator
  ) public returns (uint256 tokenId) {
    tokenId = mintWithCreatorPaymentFactory(tokenCID, paymentAddressFactory, paymentAddressCallData);
    setApprovalForAll(operator, true);
  }

  /**
   * @notice Allows the owner to set a max tokenID.
   * This provides a guarantee to collectors about the limit of this collection contract, if applicable.
   * @dev Once this value has been set, it may be decreased but can never be increased.
   */
  function updateMaxTokenId(uint256 _maxTokenId) external onlyOwner {
    require(_maxTokenId > 0, "CollectionContract: Max token ID may not be cleared");
    require(maxTokenId == 0 || _maxTokenId < maxTokenId, "CollectionContract: Max token ID may not increase");
    require(latestTokenId + 1 <= _maxTokenId, "CollectionContract: Max token ID must be greater than last mint");
    maxTokenId = _maxTokenId;

    emit MaxTokenIdUpdated(_maxTokenId);
  }

  /**
   * @notice Allows the owner to assign a baseURI to use for the tokenURI instead of the default `ipfs://`.
   */
  function updateBaseURI(string calldata baseURIOverride) external onlyOwner {
    baseURI_ = baseURIOverride;

    emit BaseURIUpdated(baseURIOverride);
  }

  /**
   * @notice Allows the creator to burn if they currently own the NFT.
   */
  function burn(uint256 tokenId) public override onlyOwner {
    super.burn(tokenId);
  }

  /**
   * @notice Allows an NFT owner or creator and Foundation to work together in order to update the creator
   * to a new account and/or transfer NFTs to that account.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   * @dev This will gracefully skip any NFTs that have been burned or transferred.
   */
  function adminAccountMigration(
    uint256[] calldata ownedTokenIds,
    address originalAddress,
    address payable newAddress,
    bytes calldata signature
  ) public onlyOperator {
    originalAddress.requireAuthorizedAccountMigration(newAddress, signature);

    for (uint256 i = 0; i < ownedTokenIds.length; i++) {
      uint256 tokenId = ownedTokenIds[i];
      // Check that the token exists and still is owned by the originalAddress
      // so that frontrunning a burn or transfer will not cause the entire tx to revert
      if (_exists(tokenId) && ownerOf(tokenId) == originalAddress) {
        _transfer(originalAddress, newAddress, tokenId);
        emit NFTOwnerMigrated(tokenId, originalAddress, newAddress);
      }
    }

    if (owner == originalAddress) {
      owner = newAddress;
      emit CreatorMigrated(originalAddress, newAddress);
    }
  }

  /**
   * @notice Allows a split recipient and Foundation to work together in order to update the payment address
   * to a new account.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   */
  function adminAccountMigrationForPaymentAddresses(
    uint256[] calldata paymentAddressTokenIds,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    uint256 addressLocationInCallData,
    address originalAddress,
    address payable newAddress,
    bytes calldata signature
  ) public onlyOperator {
    originalAddress.requireAuthorizedAccountMigration(newAddress, signature);
    _adminAccountRecoveryForPaymentAddresses(
      paymentAddressTokenIds,
      paymentAddressFactory,
      paymentAddressCallData,
      addressLocationInCallData,
      originalAddress,
      newAddress
    );
  }

  function baseURI() external view returns (string memory) {
    return _baseURI();
  }

  /**
   * @notice Returns an array of recipient addresses to which royalties for secondary sales should be sent.
   * The expected royalty amount is communicated with `getFeeBps`.
   */
  function getFeeRecipients(uint256 id) external view returns (address payable[] memory recipients) {
    recipients = new address payable[](1);
    recipients[0] = getTokenCreatorPaymentAddress(id);
  }

  /**
   * @notice Returns an array of royalties to be sent for secondary sales in basis points.
   * The expected recipients is communicated with `getFeeRecipients`.
   */
  function getFeeBps(
    uint256 /* id */
  ) external pure returns (uint256[] memory feesInBasisPoints) {
    feesInBasisPoints = new uint256[](1);
    feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
  }

  /**
   * @notice Checks if the creator has already minted a given NFT using this collection contract.
   */
  function getHasMintedCID(string memory tokenCID) public view returns (bool) {
    return cidToMinted[tokenCID];
  }

  /**
   * @notice Returns an array of royalties to be sent for secondary sales.
   */
  function getRoyalties(uint256 tokenId)
    external
    view
    returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints)
  {
    recipients = new address payable[](1);
    recipients[0] = getTokenCreatorPaymentAddress(tokenId);
    feesInBasisPoints = new uint256[](1);
    feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS;
  }

  /**
   * @notice Returns the creator for an NFT, which is always the collection owner.
   */
  function tokenCreator(
    uint256 /* tokenId */
  ) external view returns (address payable) {
    return owner;
  }

  /**
   * @notice Returns the desired payment address to be used for any transfers to the creator.
   * @dev The payment address may be assigned for each individual NFT, if not defined the collection owner is returned.
   */
  function getTokenCreatorPaymentAddress(uint256 tokenId)
    public
    view
    returns (address payable tokenCreatorPaymentAddress)
  {
    tokenCreatorPaymentAddress = tokenIdToCreatorPaymentAddress[tokenId];
    if (tokenCreatorPaymentAddress == address(0)) {
      tokenCreatorPaymentAddress = owner;
    }
  }

  function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
    if (
      interfaceId == type(IGetRoyalties).interfaceId ||
      interfaceId == type(ITokenCreator).interfaceId ||
      interfaceId == type(ITokenCreatorPaymentAddress).interfaceId ||
      interfaceId == type(IGetFees).interfaceId
    ) {
      return true;
    }
    return super.supportsInterface(interfaceId);
  }

  function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
    require(_exists(tokenId), "CollectionContract: URI query for nonexistent token");

    return string(abi.encodePacked(_baseURI(), _tokenCIDs[tokenId]));
  }

  function _mint(string memory tokenCID) private onlyOwner returns (uint256 tokenId) {
    require(bytes(tokenCID).length > 0, "CollectionContract: tokenCID is required");
    require(!cidToMinted[tokenCID], "CollectionContract: NFT was already minted");
    unchecked {
      tokenId = ++latestTokenId;
      require(maxTokenId == 0 || tokenId <= maxTokenId, "CollectionContract: Max token count has already been minted");
      cidToMinted[tokenCID] = true;
      _safeMint(msg.sender, tokenId, "");
      _tokenCIDs[tokenId] = tokenCID;
      emit Minted(msg.sender, tokenId, tokenCID, tokenCID);
    }
  }

  /**
   * @dev Allow setting a different address to send payments to for both primary sale revenue
   * and secondary sales royalties.
   */
  function _setTokenCreatorPaymentAddress(uint256 tokenId, address payable tokenCreatorPaymentAddress) internal {
    emit TokenCreatorPaymentAddressSet(tokenIdToCreatorPaymentAddress[tokenId], tokenCreatorPaymentAddress, tokenId);
    tokenIdToCreatorPaymentAddress[tokenId] = tokenCreatorPaymentAddress;
  }

  function _burn(uint256 tokenId) internal override {
    delete cidToMinted[_tokenCIDs[tokenId]];
    delete tokenIdToCreatorPaymentAddress[tokenId];
    delete _tokenCIDs[tokenId];
    super._burn(tokenId);
  }

  /**
   * @dev Split into a second function to avoid stack too deep errors
   */
  function _adminAccountRecoveryForPaymentAddresses(
    uint256[] calldata paymentAddressTokenIds,
    address paymentAddressFactory,
    bytes memory paymentAddressCallData,
    uint256 addressLocationInCallData,
    address originalAddress,
    address payable newAddress
  ) private {
    // Call the factory and get the originalPaymentAddress
    address payable originalPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress(
      paymentAddressFactory,
      paymentAddressCallData
    );

    // Confirm the original address and swap with the new address
    paymentAddressCallData.replaceAtIf(addressLocationInCallData, originalAddress, newAddress);

    // Call the factory and get the newPaymentAddress
    address payable newPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress(
      paymentAddressFactory,
      paymentAddressCallData
    );

    // For each token, confirm the expected payment address and then update to the new one
    for (uint256 i = 0; i < paymentAddressTokenIds.length; i++) {
      uint256 tokenId = paymentAddressTokenIds[i];
      require(
        tokenIdToCreatorPaymentAddress[tokenId] == originalPaymentAddress,
        "CollectionContract: Payment address is not the expected value"
      );

      _setTokenCreatorPaymentAddress(tokenId, newPaymentAddress);
      emit PaymentAddressMigrated(tokenId, originalAddress, newAddress, originalPaymentAddress, newPaymentAddress);
    }
  }

  function _baseURI() internal view override returns (string memory) {
    if (bytes(baseURI_).length > 0) {
      return baseURI_;
    }
    return "ipfs://";
  }
}

File 2 of 28 : ERC721BurnableUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721Upgradeable.sol";
import "../../../utils/ContextUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be irreversibly burned (destroyed).
 */
abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable {
    function __ERC721Burnable_init() internal initializer {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __ERC721Burnable_init_unchained();
    }

    function __ERC721Burnable_init_unchained() internal initializer {
    }
    /**
     * @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);
    }
    uint256[50] private __gap;
}

File 3 of 28 : Address.sol
// 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);
            }
        }
    }
}

File 4 of 28 : ICollectionContractInitializer.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ICollectionContractInitializer {
  function initialize(
    address payable _creator,
    string memory _name,
    string memory _symbol
  ) external;
}

File 5 of 28 : ICollectionFactory.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "./IRoles.sol";
import "./IProxyCall.sol";

interface ICollectionFactory {
  function rolesContract() external returns (IRoles);

  function proxyCallContract() external returns (IProxyCall);
}

File 6 of 28 : IGetRoyalties.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface IGetRoyalties {
  function getRoyalties(uint256 tokenId)
    external
    view
    returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints);
}

File 7 of 28 : IProxyCall.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface IProxyCall {
  function proxyCallAndReturnAddress(address externalContract, bytes calldata callData)
    external
    returns (address payable result);
}

File 8 of 28 : ITokenCreator.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ITokenCreator {
  function tokenCreator(uint256 tokenId) external view returns (address payable);
}

File 9 of 28 : ITokenCreatorPaymentAddress.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

interface ITokenCreatorPaymentAddress {
  function getTokenCreatorPaymentAddress(uint256 tokenId)
    external
    view
    returns (address payable tokenCreatorPaymentAddress);
}

File 10 of 28 : IGetFees.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice An interface for communicating fees to 3rd party marketplaces.
 * @dev Originally implemented in mainnet contract 0x44d6e8933f8271abcf253c72f9ed7e0e4c0323b3
 */
interface IGetFees {
  function getFeeRecipients(uint256 id) external view returns (address payable[] memory);

  function getFeeBps(uint256 id) external view returns (uint256[] memory);
}

File 11 of 28 : AccountMigration.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-solc-8/utils/cryptography/SignatureChecker.sol";
import "@openzeppelin/contracts-solc-8/utils/Strings.sol";

/**
 * @notice Checks for a valid signature authorizing the migration of an account to a new address.
 * @dev This is shared by both the NFT contracts and FNDNFTMarket, and the same signature authorizes both.
 */
library AccountMigration {
  using SignatureChecker for address;
  using Strings for uint256;

  // From https://ethereum.stackexchange.com/questions/8346/convert-address-to-string
  function _toAsciiString(address x) private pure returns (string memory) {
    bytes memory s = new bytes(42);
    s[0] = "0";
    s[1] = "x";
    for (uint256 i = 0; i < 20; i++) {
      bytes1 b = bytes1(uint8(uint256(uint160(x)) / (2**(8 * (19 - i)))));
      bytes1 hi = bytes1(uint8(b) / 16);
      bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi));
      s[2 * i + 2] = _char(hi);
      s[2 * i + 3] = _char(lo);
    }
    return string(s);
  }

  function _char(bytes1 b) private pure returns (bytes1 c) {
    if (uint8(b) < 10) return bytes1(uint8(b) + 0x30);
    else return bytes1(uint8(b) + 0x57);
  }

  // From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.1.0/contracts/utils/cryptography/ECDSA.sol
  // Modified to accept messages (instead of the message hash)
  function _toEthSignedMessage(bytes memory message) private pure returns (bytes32) {
    return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", message.length.toString(), message));
  }

  /**
   * @dev Confirms the msg.sender is a Foundation operator and that the signature provided is valid.
   * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}`
   * signed by the original account.
   */
  function requireAuthorizedAccountMigration(
    address originalAddress,
    address newAddress,
    bytes memory signature
  ) internal view {
    require(originalAddress != newAddress, "AccountMigration: Cannot migrate to the same account");
    bytes32 hash = _toEthSignedMessage(
      abi.encodePacked("I authorize Foundation to migrate my account to ", _toAsciiString(newAddress))
    );
    require(
      originalAddress.isValidSignatureNow(hash, signature),
      "AccountMigration: Signature must be from the original account"
    );
  }
}

File 12 of 28 : ProxyCall.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-solc-8/utils/Address.sol";
import "../../interfaces/solc8/IProxyCall.sol";

/**
 * @notice Forwards arbitrary calls to an external contract to be processed.
 * @dev This is used so that the from address of the calling contract does not have
 * any special permissions (e.g. ERC-20 transfer).
 */
library ProxyCall {
  using Address for address payable;

  /**
   * @dev Used by other mixins to make external calls through the proxy contract.
   * This will fail if the proxyCall address is address(0).
   */
  function proxyCallAndReturnContractAddress(
    IProxyCall proxyCall,
    address externalContract,
    bytes memory callData
  ) internal returns (address payable result) {
    result = proxyCall.proxyCallAndReturnAddress(externalContract, callData);
    require(result.isContract(), "ProxyCall: address returned is not a contract");
  }
}

File 13 of 28 : BytesLibrary.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice A library for manipulation of byte arrays.
 */
library BytesLibrary {
  /**
   * @dev Replace the address at the given location in a byte array if the contents at that location
   * match the expected address.
   */
  function replaceAtIf(
    bytes memory data,
    uint256 startLocation,
    address expectedAddress,
    address newAddress
  ) internal pure {
    bytes memory expectedData = abi.encodePacked(expectedAddress);
    bytes memory newData = abi.encodePacked(newAddress);
    // An address is 20 bytes long
    for (uint256 i = 0; i < 20; i++) {
      uint256 dataLocation = startLocation + i;
      require(data[dataLocation] == expectedData[i], "Bytes: Data provided does not include the expectedAddress");
      data[dataLocation] = newData[i];
    }
  }
}

File 14 of 28 : ERC721Upgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
    using AddressUpgradeable for address;
    using StringsUpgradeable 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.
     */
    function __ERC721_init(string memory name_, string memory symbol_) internal initializer {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __ERC721_init_unchained(name_, symbol_);
    }

    function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
        return
            interfaceId == type(IERC721Upgradeable).interfaceId ||
            interfaceId == type(IERC721MetadataUpgradeable).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 = ERC721Upgradeable.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 = ERC721Upgradeable.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 = ERC721Upgradeable.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(ERC721Upgradeable.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(ERC721Upgradeable.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 IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721ReceiverUpgradeable.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 {}
    uint256[44] private __gap;
}

File 15 of 28 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    uint256[50] private __gap;
}

File 16 of 28 : Initializable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

File 17 of 28 : IERC721Upgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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;
}

File 18 of 28 : IERC721ReceiverUpgradeable.sol
// 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 IERC721ReceiverUpgradeable {
    /**
     * @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);
}

File 19 of 28 : IERC721MetadataUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
    /**
     * @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);
}

File 20 of 28 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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 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);
            }
        }
    }
}

File 21 of 28 : StringsUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    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);
    }
}

File 22 of 28 : ERC165Upgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal initializer {
        __ERC165_init_unchained();
    }

    function __ERC165_init_unchained() internal initializer {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }
    uint256[50] private __gap;
}

File 23 of 28 : IERC165Upgradeable.sol
// 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 IERC165Upgradeable {
    /**
     * @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);
}

File 24 of 28 : IRoles.sol
// SPDX-License-Identifier: MIT OR Apache-2.0

pragma solidity ^0.8.0;

/**
 * @notice Interface for a contract which implements admin roles.
 */
interface IRoles {
  function isAdmin(address account) external view returns (bool);

  function isOperator(address account) external view returns (bool);
}

File 25 of 28 : SignatureChecker.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ECDSA.sol";
import "../Address.sol";
import "../../interfaces/IERC1271.sol";

/**
 * @dev Signature verification helper: Provide a single mechanism to verify both private-key (EOA) ECDSA signature and
 * ERC1271 contract sigantures. Using this instead of ECDSA.recover in your contract will make them compatible with
 * smart contract wallets such as Argent and Gnosis.
 *
 * Note: unlike ECDSA signatures, contract signature's are revocable, and the outcome of this function can thus change
 * through time. It could return true at block N and false at block N+1 (or the opposite).
 *
 * _Available since v4.1._
 */
library SignatureChecker {
    function isValidSignatureNow(
        address signer,
        bytes32 hash,
        bytes memory signature
    ) internal view returns (bool) {
        (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature);
        if (error == ECDSA.RecoverError.NoError && recovered == signer) {
            return true;
        }

        (bool success, bytes memory result) = signer.staticcall(
            abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
        );
        return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector);
    }
}

File 26 of 28 : Strings.sol
// 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);
    }
}

File 27 of 28 : ECDSA.sol
// 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));
    }
}

File 28 of 28 : IERC1271.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC1271 standard signature validation method for
 * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
 *
 * _Available since v4.1._
 */
interface IERC1271 {
    /**
     * @dev Should return whether the signature provided is valid for the provided data
     * @param hash      Hash of the data to be signed
     * @param signature Signature byte array associated with _data
     */
    function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 1337
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_collectionFactory","type":"address"}],"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":"string","name":"baseURI","type":"string"}],"name":"BaseURIUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"originalAddress","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"CreatorMigrated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"maxTokenId","type":"uint256"}],"name":"MaxTokenIdUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"creator","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"string","name":"indexedTokenCID","type":"string"},{"indexed":false,"internalType":"string","name":"tokenCID","type":"string"}],"name":"Minted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"originalAddress","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"NFTOwnerMigrated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"originalAddress","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"},{"indexed":false,"internalType":"address","name":"originalPaymentAddress","type":"address"},{"indexed":false,"internalType":"address","name":"newPaymentAddress","type":"address"}],"name":"PaymentAddressMigrated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"fromPaymentAddress","type":"address"},{"indexed":true,"internalType":"address","name":"toPaymentAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"TokenCreatorPaymentAddressSet","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":"uint256[]","name":"ownedTokenIds","type":"uint256[]"},{"internalType":"address","name":"originalAddress","type":"address"},{"internalType":"address payable","name":"newAddress","type":"address"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"adminAccountMigration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"paymentAddressTokenIds","type":"uint256[]"},{"internalType":"address","name":"paymentAddressFactory","type":"address"},{"internalType":"bytes","name":"paymentAddressCallData","type":"bytes"},{"internalType":"uint256","name":"addressLocationInCallData","type":"uint256"},{"internalType":"address","name":"originalAddress","type":"address"},{"internalType":"address payable","name":"newAddress","type":"address"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"adminAccountMigrationForPaymentAddresses","outputs":[],"stateMutability":"nonpayable","type":"function"},{"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":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"collectionFactory","outputs":[{"internalType":"contract ICollectionFactory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"getFeeBps","outputs":[{"internalType":"uint256[]","name":"feesInBasisPoints","type":"uint256[]"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getFeeRecipients","outputs":[{"internalType":"address payable[]","name":"recipients","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"}],"name":"getHasMintedCID","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getRoyalties","outputs":[{"internalType":"address payable[]","name":"recipients","type":"address[]"},{"internalType":"uint256[]","name":"feesInBasisPoints","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getTokenCreatorPaymentAddress","outputs":[{"internalType":"address payable","name":"tokenCreatorPaymentAddress","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"_creator","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","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":"latestTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTokenId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"}],"name":"mint","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"},{"internalType":"address","name":"operator","type":"address"}],"name":"mintAndApprove","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"},{"internalType":"address payable","name":"tokenCreatorPaymentAddress","type":"address"}],"name":"mintWithCreatorPaymentAddress","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"},{"internalType":"address payable","name":"tokenCreatorPaymentAddress","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"mintWithCreatorPaymentAddressAndApprove","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"},{"internalType":"address","name":"paymentAddressFactory","type":"address"},{"internalType":"bytes","name":"paymentAddressCallData","type":"bytes"}],"name":"mintWithCreatorPaymentFactory","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"tokenCID","type":"string"},{"internalType":"address","name":"paymentAddressFactory","type":"address"},{"internalType":"bytes","name":"paymentAddressCallData","type":"bytes"},{"internalType":"address","name":"operator","type":"address"}],"name":"mintWithCreatorPaymentFactoryAndApprove","outputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address payable","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":"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":"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":"","type":"uint256"}],"name":"tokenCreator","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"string","name":"baseURIOverride","type":"string"}],"name":"updateBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxTokenId","type":"uint256"}],"name":"updateMaxTokenId","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
Loading
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.