Theta Smart Contracts | ThetaScan.io

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

Published Contract:

// SPDX-License-Identifier: MIT


// OpenZeppelin Contracts v4.3.2 (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 `IERC721.onERC721Received.selector`.
 */
 function onERC721Received(
 address operator,
 address from,
 uint256 tokenId,
 bytes calldata data
 ) external returns (bytes4);
}


// OpenZeppelin Contracts v4.3.2 (utils/Address.sol)

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);
 }
 }
 }
}


// OpenZeppelin Contracts v4.3.2 (utils/Strings.sol)

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);
 }
}


// OpenZeppelin Contracts v4.3.2 (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);
}


// OpenZeppelin Contracts v4.3.2 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

/**
 * @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;
 }
}


// OpenZeppelin Contracts v4.3.2 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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


// OpenZeppelin Contracts v4.3.2 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}



// OpenZeppelin Contracts v4.3.2 (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;
 }
}



// OpenZeppelin Contracts v4.3.2 (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

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

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

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


// @openzeppelin/contracts/token/ERC721/ERC721.sol
// OpenZeppelin Contracts v4.3.2 (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

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

 // Token name
 string private _name;

 // Token symbol
 string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

 _approve(to, tokenId);
 }

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

 return _tokenApprovals[tokenId];
 }

 /**
 * @dev See {IERC721-setApprovalForAll}.
 */
 function setApprovalForAll(address operator, bool approved) public virtual override {
 _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: transfer caller is not owner nor approved");

 _transfer(from, to, tokenId);
 }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

 _beforeTokenTransfer(from, to, tokenId);

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

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

 emit Transfer(from, to, tokenId);
 }

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

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

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



// @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol
// OpenZeppelin Contracts v4.3.2 (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

// @openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol
// OpenZeppelin Contracts v4.3.2 (token/ERC721/extensions/ERC721URIStorage.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC721 token with storage based token URI management.
 */
abstract contract ERC721URIStorage is ERC721 {
 using Strings for uint256;

 // Optional mapping for token URIs
 mapping(uint256 => string) private _tokenURIs;

 /**
 * @dev See {IERC721Metadata-tokenURI}.
 */
 function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
 require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");

 string memory _tokenURI = _tokenURIs[tokenId];
 string memory base = _baseURI();

 // If there is no base URI, return the token URI.
 if (bytes(base).length == 0) {
 return _tokenURI;
 }
 // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
 if (bytes(_tokenURI).length > 0) {
 return string(abi.encodePacked(base, _tokenURI));
 }

 return super.tokenURI(tokenId);
 }

 /**
 * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
 *
 * Requirements:
 *
 * - `tokenId` must exist.
 */
 function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
 require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
 _tokenURIs[tokenId] = _tokenURI;
 }

 /**
 * @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 override {
 super._burn(tokenId);

 if (bytes(_tokenURIs[tokenId]).length != 0) {
 delete _tokenURIs[tokenId];
 }
 }
}



// @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.3.2 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

// @openzeppelin/contracts/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;
 }
}

pragma solidity ^0.8.2;

//import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
//import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
//import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
//import "@openzeppelin/contracts/access/Ownable.sol";
//import "@openzeppelin/contracts/utils/Counters.sol";

contract BangkokBuddhaBar is ERC721, ERC721Enumerable, ERC721URIStorage, Ownable {

 string private baseURI;

 uint256 public MAX_NFT_SUPPLY = 444;

 bool public saleIsActive = false;

 address public creatorAddress;

 // randomize NFTs
 uint16[444] private order;
 uint private start;
 uint private end;
 uint private stepSize;
 bool private orderIsCreated;
 bool private orderIsShuffled;

 constructor(address fee, string memory uri) ERC721("Bangkok Buddha Bar", "BBB") {
 creatorAddress = fee;
 baseURI = uri;

 uint _stepSize = MAX_NFT_SUPPLY;
 if(_stepSize < 1000) {
 stepSize = _stepSize;
 } else {
 stepSize = 1000;
 }
 if(stepSize > MAX_NFT_SUPPLY) {
 stepSize = MAX_NFT_SUPPLY;
 }
 end = stepSize;
 }

 function shuffle(uint seed) external onlyOwner {
 require(orderIsCreated, "Order was not created");
 require(!orderIsShuffled, "Not yet shuffled");
 for (uint256 i = start; i < end; i++) {
 uint256 n = i + uint256(keccak256(abi.encodePacked(block.timestamp + seed))) % (order.length - i);
 uint16 temp = order[n];
 order[n] = order[i];
 order[i] = temp;
 }
 start = end;
 end += stepSize;
 if(end > MAX_NFT_SUPPLY) end = MAX_NFT_SUPPLY;
 if(start == end) orderIsShuffled = true;
 }

 function createOrder() external onlyOwner {
 require(!orderIsCreated, "Order was not created");
 for (uint256 i = start; i < end; i++) {
 order[i] = uint16(i+1);
 }
 start = end;
 end += stepSize;
 if(end > MAX_NFT_SUPPLY) end = MAX_NFT_SUPPLY;
 if(start == end) {
 orderIsCreated = true;
 start = 0;
 end = stepSize;
 if(stepSize > 500) {
 stepSize = 500;
 end = stepSize;
 }
 }
 }

 /**
 * @dev Gets current Price
 */
 function getNFTPrice() public view returns (uint256) {
 require(totalSupply() < MAX_NFT_SUPPLY, "Sale has already ended");

 return 200000000000000000000; // 1 - 444 200 TFUEL
 }

 /**
 * Set some NFTs aside
 */
 function reserveNFTS(uint256 numberOfNfts, address _senderAddress) public onlyOwner {
 require(orderIsShuffled, "Not yet shuffled");
 for (uint i = 0; i < numberOfNfts; i++) {
 uint256 supply = totalSupply();

 if (supply < MAX_NFT_SUPPLY )
 {
 uint256 tokenId = order[supply];
 _safeMint(_senderAddress, tokenId);
 string memory id = Strings.toString(tokenId);
 _setTokenURI(tokenId, string(abi.encodePacked(id, ".json")));
 }
 }
 }

 /*
 * Mint token if sale is active and total supply < max supply
 */
 function safeMint(address to) public payable {
 require(saleIsActive, "Sale must be active to mint");
 require(totalSupply() < MAX_NFT_SUPPLY, "Purchase would exceed max supply");
 require(getNFTPrice() == msg.value, "TFuel value sent is not correct");

 uint256 ownerPayout = (msg.value / 100) * 20;
 uint256 creatorPayout = msg.value - ownerPayout;
 payable(owner()).transfer(ownerPayout);
 payable(creatorAddress).transfer(creatorPayout);

 uint256 tokenId = order[totalSupply()];

 _safeMint(to, tokenId);
 string memory id = Strings.toString(tokenId);
 _setTokenURI(tokenId, string(abi.encodePacked(id, ".json")));
 }

 /*
 * Pause sale if active, make active if paused
 */
 function flipSaleState() public onlyOwner {
 require(orderIsShuffled, "Not yet shuffled");
 saleIsActive = !saleIsActive;
 }

 /*
 * Change fee address
 */
 function changeCreatorAddress(address newAddress) public onlyOwner {
 creatorAddress = newAddress;
 }

 function _baseURI() internal view virtual override returns (string memory) {
 return baseURI;
 }

 // The following functions are overrides required by Solidity.

 function _beforeTokenTransfer(address from, address to, uint256 tokenId)
 internal
 override(ERC721, ERC721Enumerable)
 {
 super._beforeTokenTransfer(from, to, tokenId);
 }

 function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {
 super._burn(tokenId);
 }

 function tokenURI(uint256 tokenId)
 public
 view
 override(ERC721, ERC721URIStorage)
 returns (string memory)
 {
 return super.tokenURI(tokenId);
 }

 function supportsInterface(bytes4 interfaceId)
 public
 view
 override(ERC721, ERC721Enumerable)
 returns (bool)
 {
 return super.supportsInterface(interfaceId);
 }
}

Contract ABI:

[{"inputs":[{"internalType":"address","name":"fee","type":"address"},{"internalType":"string","name":"uri","type":"string"}],"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":"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":"MAX_NFT_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":[{"internalType":"address","name":"newAddress","type":"address"}],"name":"changeCreatorAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"createOrder","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"creatorAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"flipSaleState","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":[],"name":"getNFTPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"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":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberOfNfts","type":"uint256"},{"internalType":"address","name":"_senderAddress","type":"address"}],"name":"reserveNFTS","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"safeMint","outputs":[],"stateMutability":"payable","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":[],"name":"saleIsActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"seed","type":"uint256"}],"name":"shuffle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]