Theta Smart Contracts | ThetaScan.io

Node:

Token Contract Details

Contract:

0x054f16e2fc75fd6e187f8728f140b0db2c0fecbb

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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 DysonSphere is ERC721, ERC721Enumerable, ERC721URIStorage, Ownable {

 string private baseURI;

 uint256 public MAX_NFT_SUPPLY = 100;

 bool public saleIsActive = false;

 address public feeAddress;

 constructor(address fee, string memory uri) ERC721("Dyson Sphere", "DS") {
 feeAddress = fee;
 baseURI = uri;
 }

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

 return 75000000000000000000; // 1 - 100 75 TFUEL
 }

 /**
 * Set some NFTs aside
 */
 function reserveNFTS(uint256 numberOfNfts, address _senderAddress) public onlyOwner {
 uint currentSupply = totalSupply();
 require(currentSupply < MAX_NFT_SUPPLY, "Sale has already ended");
 for (uint i = 0; i < numberOfNfts; i++) {
 uint256 supply = totalSupply();

 if (supply < MAX_NFT_SUPPLY )
 {
 uint256 tokenId = supply+1;
 _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) * 80;
 uint256 feePayout = msg.value - ownerPayout;
 payable(owner()).transfer(ownerPayout);
 payable(feeAddress).transfer(feePayout);

 uint256 tokenId = totalSupply() + 1;

 _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 {
 saleIsActive = !saleIsActive;
 }

 /*
 * Change fee address
 */
 function changeFeeAddress(address newAddress) public {
 require(feeAddress == msg.sender, 'Only current feeAddress can change it');
 feeAddress = 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":"changeFeeAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeAddress","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":"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"}]