Token

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

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

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        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) {
        _requireMinted(tokenId);

        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 overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

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

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_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: caller is not token owner or 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: caller is not token owner or 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 the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @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 _ownerOf(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) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == 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, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

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

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

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

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

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

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

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

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

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

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Burnable.sol)

pragma solidity ^0.8.0;

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

/**
 * @title ERC721 Burnable Token
 * @dev ERC721 Token that can be burned (destroyed).
 */
abstract contract ERC721Burnable is Context, ERC721 {
    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) public virtual {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _burn(tokenId);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * 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;

    /**
     * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 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 the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.2) (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Tree proofs.
 *
 * The tree and the proofs can be generated using our
 * https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
 * You will find a quickstart guide in the readme.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 * OpenZeppelin's JavaScript library generates merkle trees that are safe
 * against this attack out of the box.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Calldata version of {verify}
     *
     * _Available since v4.7._
     */
    function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     *
     * _Available since v4.7._
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
     * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
     * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
     * respectively.
     *
     * CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
     * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
     * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
     *
     * _Available since v4.7._
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proofLen - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            require(proofPos == proofLen, "MerkleProof: invalid multiproof");
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}.
     *
     * CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
     *
     * _Available since v4.7._
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 proofLen = proof.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proofLen - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i]
                ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
                : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            require(proofPos == proofLen, "MerkleProof: invalid multiproof");
            unchecked {
                return hashes[totalHashes - 1];
            }
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @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] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

import { Ownable2Step } from "@openzeppelin/contracts/access/Ownable2Step.sol";

import { ERC721 } from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import { IERC721Receiver } from "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import { ERC721Burnable } from "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";

import { ERC165, IERC165 } from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
import { Counters } from "@openzeppelin/contracts/utils/Counters.sol";
import { MerkleProof } from "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";

/**
 * @title Command Prompt Key NFT
 * @dev ERC721 non-transferable token for Wayfinder voting.
 */
contract CommandPromptKey is Ownable2Step, ERC721, ERC721Burnable {
    /// @notice Token ID to weight mapping.
    mapping(uint256 => uint256) public tokenIdToWeight;

    /// @notice Base URI for computing {tokenURI}.
    string public baseURI;

    /// @notice Merkle root for claims.
    bytes32 public merkleRoot;

    /**
     * @notice Construct a new CommandPromptKey contract.
     * @param baseURI_ The base URI for computing {tokenURI}.
     * @param merkleRoot_ The merkle root for claims.
     */
    constructor(
        string memory baseURI_,
        bytes32 merkleRoot_
    ) ERC721("Command Prompt Key", "CPK") {
        baseURI = baseURI_;
        merkleRoot = merkleRoot_;
    }

    /**
     * @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 overridden in child contracts.
     */
    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    /**
     * @notice Set the base URI for computing {tokenURI}.
     * @param baseURI_ The new base URI.
     */
    function setBaseURI(string memory baseURI_) external onlyOwner {
        baseURI = baseURI_;
    }

    /**
     * @notice Claim a mint with a merkle proof.
     * @param tokenId The token ID to claim.
     * @param weight The weight of the token.
     * @param merkleProof The merkle proof for the claim.
     */
    function claimMint(
        uint256 tokenId,
        uint256 weight,
        bytes32[] calldata merkleProof
    ) external {
        bytes32 leaf = keccak256(abi.encodePacked(msg.sender, tokenId, weight));
        require(
            MerkleProof.verify(merkleProof, merkleRoot, leaf),
            "CommandPromptKey: InvalidProof"
        );

        _safeMint(msg.sender, tokenId);
    }

    /**
     * @notice Set weight on unclaimed tokens.
     * @param owners The owners of the tokens.
     * @param tokenIds The token IDs to set the weight on.
     * @param weights The weights to set.
     * @param merkleProofs The merkle proofs for the claims.
     */
    function setWeights(
        address[] calldata owners,
        uint256[] calldata tokenIds,
        uint256[] calldata weights,
        bytes32[][] calldata merkleProofs
    ) external {
        require(
            tokenIds.length == owners.length,
            "CommandPromptKey: InvalidLength"
        );
        require(
            tokenIds.length == weights.length,
            "CommandPromptKey: InvalidLength"
        );
        require(
            tokenIds.length == merkleProofs.length,
            "CommandPromptKey: InvalidLength"
        );

        for (uint256 i = 0; i < tokenIds.length; i++) {
            bytes32 leaf = keccak256(
                abi.encodePacked(owners[i], tokenIds[i], weights[i])
            );
            require(
                MerkleProof.verify(merkleProofs[i], merkleRoot, leaf),
                "invalid proof"
            );

            tokenIdToWeight[tokenIds[i]] = weights[i];
        }
    }

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 /* firstTokenId */,
        uint256 /* batchSize */
    ) internal pure override {
        require(
            from == address(0) || to == address(0),
            "CommandPromptKey: Non-Transferable"
        );
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"string","name":"baseURI_","type":"string"},{"internalType":"bytes32","name":"merkleRoot_","type":"bytes32"}],"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":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"acceptOwnership","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":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"weight","type":"uint256"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"name":"claimMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"merkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI_","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"owners","type":"address[]"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"uint256[]","name":"weights","type":"uint256[]"},{"internalType":"bytes32[][]","name":"merkleProofs","type":"bytes32[][]"}],"name":"setWeights","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":"tokenIdToWeight","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000000000000000000000000000000000000000000040ac4429fac72474c0ec9143e50808764e213f9db5269271ac0b45338df2900e290000000000000000000000000000000000000000000000000000000000000036697066733a2f2f516d5a4b3431435a356b73544d646b393563314c636f4a764767723145366241516e6e4a483157756748693974572f00000000000000000000

-----Decoded View---------------
Arg [0] : baseURI_ (string): ipfs://QmZK41CZ5ksTMdk95c1LcoJvGgr1E6bAQnnJH1WugHi9tW/
Arg [1] : merkleRoot_ (bytes32): 0xac4429fac72474c0ec9143e50808764e213f9db5269271ac0b45338df2900e29

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [1] : ac4429fac72474c0ec9143e50808764e213f9db5269271ac0b45338df2900e29
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000036
Arg [3] : 697066733a2f2f516d5a4b3431435a356b73544d646b393563314c636f4a7647
Arg [4] : 67723145366241516e6e4a483157756748693974572f00000000000000000000