Contract 0xbBB9f8296c31c848beE8a8564Cb90F5635DB6BF5

 
 
Txn Hash
Method
Block
From
To
Value
0x59a72fbdd086dc4c4a8adc691f9dde75f2fdea9d86ee5def527a3fa06e626fb0Set Approval For...156791162022-10-05 3:06:2352 days 9 hrs ago0x53c0b54488532652d49b63d24ec8e37cc35968c1 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00019929 8.17205162
0x5dfcfbe732dd4648bc490dc715f793890205add1f0a438cc0402313f4b0df9e5Set Approval For...156544662022-10-01 16:21:3555 days 19 hrs ago0xec7ac09afd12e9711154101b75d05ae95598ffea IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00074361 16.09038577
0x7112559d3d18e0ea3b6de4e153cf7e822b8bada979f796bbaaf25b085ffb9055Transfer From155046942022-09-09 20:15:2177 days 15 hrs ago0x4c953214668b5ae9a886660a84995fffa473b343 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00086448 19.06511771
0x08795247370c7584a11ab714fc3a482078d6e301a02cadb4d8e0478e15236c1aTransfer From155046902022-09-09 20:14:0577 days 16 hrs ago0x4c953214668b5ae9a886660a84995fffa473b343 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00081592 17.99409715
0x9e3549284c7c7b50a63f5e9723cd66c37f4df925bb072072a2255d538d794c86Safe Transfer Fr...154173582022-08-26 20:11:1091 days 16 hrs agoENS Name kennysalazar.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00137035 22.66659708
0x4eed13902154fbb60cdad62e56d807091b6ed32813c759ed856d14a7257378c6Set Approval For...153566552022-08-17 4:41:45101 days 7 hrs ago0x91b9f9c2bf42ddf98af3707eed3e152c29048dee IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00012843 5.26641641
0xa9880b799f1faa18fb899a7fd8592fe9fba4a05ad8ec6332777d106babe63b61Set Approval For...153338562022-08-13 14:08:02104 days 22 hrs ago0x614b8473790694174f4ad521999462a45dcd0c80 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00103194 22.28874164
0x78f2d122fc54149f4ed03516f4e233657c924568ad66a91f4fc68f1c41630436Set Approval For...152778692022-08-04 19:56:41113 days 16 hrs ago0xf77bdc970b7961b91fe274a3a87cb8db6a8c86fc IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00072017 15.58306654
0x6ffb1a9bd950f056fc5bfb5f4e59bd540d338ccaef2aba8d17925e6ee3b96981Set Approval For...152767762022-08-04 15:47:26113 days 20 hrs ago0xda1395cd1b431d71db7ef1b6c4d5178c35ec5a40 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00129844 28.09585031
0xc2b4b5a5ded917da2bb284538122cb4d3d34a50bed9a1626850609d3b7859b02Set Approval For...152366792022-07-29 9:58:57120 days 2 hrs ago0x7f6f11fe804622f546c9e925f11e073d217321a7 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00061798 13.37197652
0x088002896bd1a54c1d733ab57ac47f45c80a0d69a92e920b59b6cf75322f36c6Transfer From150419422022-06-28 22:30:14150 days 13 hrs agoENS Name littleduck.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00234512 37.55567668
0xb11f052401cf0096eba5236cc3b5ade9e32f443af1ec7870663ce7628e8331d4Transfer From150419422022-06-28 22:30:14150 days 13 hrs agoENS Name littleduck.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00234512 37.55567668
0x757d76533539436056325dbdb7b170d3492cef1221203894c218628348d12e07Set Approval For...149837272022-06-18 7:20:41161 days 4 hrs agoENS Name sandscrypto.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.0052548 113.49707758
0xc4a013b2b932d59d5888f8ee8a76d68dccd4c98c46fad358b0d010fadbefe17dSet Approval For...148755242022-05-30 23:57:33179 days 12 hrs ago0x91b9f9c2bf42ddf98af3707eed3e152c29048dee IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00132089 28.52960425
0x92cd7c8187769d0e175deb107da2bcf4cc993372248a4e7ce8e6a9201df605ebSafe Transfer Fr...146870912022-04-30 18:13:09209 days 18 hrs agoENS Name cleanshowroom.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00388203 64.21156206
0xd3ca5ba9fd1f16cf96fe796e37b4e704f3e7e38b2bb2a1c36708f985de929353Transfer From146634552022-04-27 1:05:41213 days 11 hrs ago0xaa86e98c737beb9701fec15b2435097dc30a5344 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00205858 35.71199575
0x9c264a2ae849480920115ca5a3a6b9a2f0954c3259fa8d652ed19b6a5b6a27dcSet Approval For...145408772022-04-07 20:21:47232 days 15 hrs agoENS Name sandscrypto.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00158324 64.92159681
0x8d0b497efb32ea5cdc3957526a364e34d2ccdcb3bea72dfc877a3413ae8003f9Transfer From145312832022-04-06 8:28:32234 days 3 hrs ago0x1a88669bd431b8807935c3fe2cc4c97972e720c0 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00194739 43.59894127
0x8dc65dc9c66cd4f9bad545ae58ba87f13ecddfa09edb321b7b265ce41877da4aSet Approval For...144769742022-03-28 21:04:44242 days 15 hrs agoENS Name muhneetm.eth IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00139726 57.29543748
0x390813df6e92f9c509d3cf970547b58801f4b050f47f367f00a0643bfd90c0bfSafe Transfer Fr...144221262022-03-20 8:19:44251 days 3 hrs ago0x6ad2a5e6113d47dc4826253b07ef1bdd2718f5b9 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00149612 22.92662976
0x5517fc1de3bb2d53e37cb9adbf74ac170393ab8e4c07c70e68cdc4a1aa08021aTransfer From143630982022-03-11 3:13:35260 days 9 hrs ago0xb045649364f5b99ee62a1bb854391a6ddca160a6 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00193862 31.04580447
0xcad8283f6f0586f0c7a5cf2879db05dadc0add9f3e26866792e082e3ab8a01a4Transfer From143618082022-03-10 22:29:38260 days 13 hrs ago0x475c5bfe392e210c9a3510d1a16dfe4909909893 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00139305 24.17147052
0xf63980d139f4935d9162d6cdbdd1ffd2b76fea7e9d9ffc583942d8d1a145880cSafe Transfer Fr...143605782022-03-10 18:01:30260 days 18 hrs ago0xd6d512edf238b5d1c7580f974228c3b1e672ae3a IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.0042235 69.85956988
0x94d71d587b7a87b7ac2760dec9d145b3eb09d4af03a612f1a9fa4bf9e8001263Set Approval For...143392042022-03-07 10:36:33264 days 1 hr ago0xd92a108315808e5dced11776a945bbbe3bb68f60 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.001194 25.78906395
0xce53bff213d59a4874a95356157e66096db1f8a14c29db167e36743a5817f1dbSet Approval For...143008392022-03-01 11:26:43270 days 48 mins ago0xda1395cd1b431d71db7ef1b6c4d5178c35ec5a40 IN  0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50 Ether0.00169803 36.67550035
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x44023a250442ffc6a4eacb9df68478c7c6e27eaa3af0b7227e56a7dcf71651fd142517832022-02-21 21:12:15277 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x6cdc3be0550bbe13eb17d35a386bb255014c79e70.14265 Ether
0x59ed3a5f485eb27d541932a92ae0b3546fdc30cbfbe0b1d5e3339006cada2170142127562022-02-15 20:02:02283 days 16 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x56ef7e05eec0d6ee34b10dd5707a4089f23cc9491263fa3651327b5e3f731b01142127562022-02-15 20:02:02283 days 16 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x92951edf3f41071183165f06fe37522b0c0742813942f298f423753985a5c46b142127562022-02-15 20:02:02283 days 16 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xc8f4927be59a2241447f9f6c1d9b86a1bcbcf24490e1b3da3e580f881a662827141169162022-02-01 0:33:19298 days 11 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x6cdc3be0550bbe13eb17d35a386bb255014c79e70.42795 Ether
0xde66385cbfcb3deeee6028c9cc97ffac4029142033d3adc835526a91adcd12a8140985802022-01-29 4:45:19301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xd885546b988deebf59f2d6c4c5b5fe5a6dd6384bb72503756321b8137c894512140985802022-01-29 4:45:19301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xa5ecdf9cac09fadfdbc96f768e6280cc74c389c6e52b8ec6b93742b908dba58b140985802022-01-29 4:45:19301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xfec5a6afb9aba8ae4add38e7a5d2c4cd86dd9f763e1fbeb907a02216631fa88f140985802022-01-29 4:45:19301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x2a490afa43746fea12dc58d9f0b84a6bf7f4678cdfdc4a4686fbdc0c463fcbca140985802022-01-29 4:45:19301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x33be5470748d81bd11f984599d255c075ffc5ba31b0712e48942b2909c5d32c1140985792022-01-29 4:45:16301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xbd5c8f3461340d0194d4e058d55d765785da0173e8b81b5f5df2fa142d72a422140985792022-01-29 4:45:16301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x88ceb2d68fdf90b0ba9167996eeea7e0f121ec6d775b931aefaba436fd569556140985792022-01-29 4:45:16301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x8ed04cc19b22da2aed471287efc6ab292394523603f96c199d4dea262920a139140985792022-01-29 4:45:16301 days 7 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xba89934e60ad126cd599db5c4286f00424a4091e265e9548449d8926d894e240140736162022-01-25 8:15:32305 days 3 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x6cdc3be0550bbe13eb17d35a386bb255014c79e70.04755 Ether
0xc26e21cefee777b9dcaeb65ef5d08fd815d845dd070ade8105a21acda8ed779d140706642022-01-24 21:12:24305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xc2ce014b947065bfea812062d05a1a2192db955e3b96f3b452bc54c9b0d57056140706232022-01-24 20:59:26305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x6cdc3be0550bbe13eb17d35a386bb255014c79e722.30095 Ether
0xf5df0c734c91d1d12ed13d18b92b1c9e7805869d12525d5174d6233cea9da22d140706222022-01-24 20:59:17305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xedac3cd13ecee6610117f1123693cf3389eee86010ddccc4a02d742b2fd1e32b140706212022-01-24 20:59:15305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x649559dbeaaa29e8f74e8ae6e1da37c1d2a4d44e214b2f229a047c258a431c6b140706162022-01-24 20:58:01305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xbe973ff739cde92ad30dddcb16f4d432eaa077e4baa5943f53d7dfd8259256e9140706092022-01-24 20:56:51305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.0049 Ether
0x3308d0df3c01dbed50c34578aa48a9e6b1a63d86668bb8a5a35a9120cb5a75c2140706082022-01-24 20:56:24305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0x3a4faeb7473d1c82eb64f3c3b74b95612f76a638c73f57fa5e3c7cf2d685cae1140706072022-01-24 20:56:20305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xc75654bbddcf7c69a7c502d2cb330a3dde2b4cd26904a1e75bfb2b776cad7f16140705922022-01-24 20:54:23305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
0xa14b4d92e103600baa78e54fe72a0fd2081dc6de26771c39696cf7f303609bf9140705882022-01-24 20:52:27305 days 15 hrs ago 0xbbb9f8296c31c848bee8a8564cb90f5635db6bf50x460fd5059e7301680fa53e63bbbf7272e643e89c0.00245 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
NFTArtGenPresale

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2022-01-19
*/

// Sources flattened with hardhat v2.8.0 https://hardhat.org

// File @openzeppelin/contracts/utils/introspection/[email protected]

// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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


// File @openzeppelin/contracts/token/ERC721/[email protected]

// OpenZeppelin Contracts v4.4.1 (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;
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

// OpenZeppelin Contracts v4.4.1 (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);
}


// File @openzeppelin/contracts/token/ERC721/extensions/[email protected]

// OpenZeppelin Contracts v4.4.1 (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);
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts v4.4.1 (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);
            }
        }
    }
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts v4.4.1 (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;
    }
}


// File @openzeppelin/contracts/utils/[email protected]

// OpenZeppelin Contracts v4.4.1 (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);
    }
}


// File @openzeppelin/contracts/utils/introspection/[email protected]

// OpenZeppelin Contracts v4.4.1 (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;
    }
}


// File @openzeppelin/contracts/token/ERC721/[email protected]

// OpenZeppelin Contracts v4.4.1 (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 {}
}


// File @openzeppelin/contracts/access/[email protected]

// OpenZeppelin Contracts v4.4.1 (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);
    }
}


// File contracts/NFTArtGen.sol


pragma solidity ^0.8.4;



// 
// Built by https://nft-generator.art
// 
contract NFTArtGen is ERC721, Ownable {
    string internal baseUri;

    uint256 public cost = 0.05 ether;
    uint32 public maxPerMint = 5;
    uint32 public maxPerWallet = 20;
    uint32 public supply = 0;
    uint32 public totalSupply = 0;
    bool public open = false;
    mapping(address => uint256) internal addressMintedMap;

    uint32 private commission = 49; // 4.9%
    address private author = 0x460Fd5059E7301680fA53E63bbBF7272E643e89C;

    constructor(
        string memory _uri,
        string memory _name,
        string memory _symbol,
        uint32 _totalSupply,
        uint256 _cost,
        bool _open
    ) ERC721(_name, _symbol) {
        baseUri = _uri;
        totalSupply = _totalSupply;
        cost = _cost;
        open = _open;
    }

    // ------ Author Only ------

    function setCommission(uint32 _commision) public {
        require(msg.sender == author, "Incorrect Address");
        commission = _commision;
    }

    // ------ Owner Only ------

    function setCost(uint256 _cost) public onlyOwner {
        cost = _cost;
    }

    function setOpen(bool _open) public onlyOwner {
        open = _open;
    }

    function setMaxPerWallet(uint32 _max) public onlyOwner {
        maxPerWallet = _max;
    }

    function setMaxPerMint(uint32 _max) public onlyOwner {
        maxPerMint = _max;
    }

    function airdrop(address[] calldata to) public onlyOwner {
        for (uint32 i = 0; i < to.length; i++) {
            require(1 + supply <= totalSupply, "Limit reached");
            _safeMint(to[i], ++supply, "");
        }
    }

    function withdraw() public payable onlyOwner {
        (bool success, ) = payable(msg.sender).call{
            value: address(this).balance
        }("");
        require(success);
    }

    // ------ Mint! ------

    function mint(uint32 count) external payable preMintChecks(count) {
        require(open == true, "Mint not open");
        performMint(count);
    }

    function performMint(uint32 count) internal {
        for (uint32 i = 0; i < count; i++) {
            _safeMint(msg.sender, ++supply, "");
        }
        
        addressMintedMap[msg.sender] += count;

        (bool success, ) = payable(author).call{
            value: (msg.value * commission) / 1000
        }("");
        require(success);
    }

    // ------ Read ------

    // ------ Modifiers ------

    modifier preMintChecks(uint32 count) {
        require(count > 0, "Mint at least one.");
        require(count < maxPerMint + 1, "Max mint reached.");
        require(msg.value >= cost * count, "Not enough fund.");
        require(supply + count < totalSupply + 1, "Mint sold out");
        require(
            addressMintedMap[msg.sender] + count <= maxPerWallet,
            "Max total mint reached"
        );
        _;
    }
}


// File @openzeppelin/contracts/utils/cryptography/[email protected]

// OpenZeppelin Contracts v4.4.1 (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
            }
        }
        return computedHash;
    }
}


// File contracts/utils/Presaleable.sol


pragma solidity ^0.8.4;


abstract contract Presaleable is NFTArtGen {
    bool public presaleOpen = false;
    bytes32 private merkleRoot;

    function setPresaleOpen(bool _open) public onlyOwner {
        presaleOpen = _open;
    }

    function setPreSaleAddresses(bytes32 root) public onlyOwner {
        merkleRoot = root;
    }

    function presaleMint(uint32 count, bytes32[] calldata proof)
        external
        payable
        preMintChecks(count)
    {
        require(presaleOpen, "Presale not open");
        require(merkleRoot != "", "Presale not ready");
        require(
            MerkleProof.verify(
                proof,
                merkleRoot,
                keccak256(abi.encodePacked(msg.sender))
            ),
            "Not a presale member"
        );

        performMint(count);
    }
}


// File contracts/extensions/Presale.sol


pragma solidity ^0.8.4;



contract NFTArtGenPresale is NFTArtGen, Presaleable {
    constructor(
        string memory _uri,
        string memory _name,
        string memory _symbol,
        uint32 _totalSupply,
        uint256 _cost,
        bool _open
    ) NFTArtGen(_uri, _name, _symbol, _totalSupply, _cost, _open) {}

    function tokenURI(uint256 _tokenId)
        public
        view
        virtual
        override
        returns (string memory)
    {
        require(_tokenId <= supply, "Not minted yet");

        return
            string(
                abi.encodePacked(baseUri, Strings.toString(_tokenId), ".json")
            );
    }
}

Contract Security Audit

Contract ABI

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ts":[{"internalType":"uint32","name":"_commision","type":"uint32"}],"name":"setCommission","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_cost","type":"uint256"}],"name":"setCost","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_max","type":"uint32"}],"name":"setMaxPerMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_max","type":"uint32"}],"name":"setMaxPerWallet","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_open","type":"bool"}],"name":"setOpen","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"setPreSaleAddresses","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_open","type":"bool"}],"name":"setPresaleOpen","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"supply","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","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":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"payable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000001400000000000000000000000000000000000000000000000000000000000000180000000000000000000000000000000000000000000000000000000000000115c000000000000000000000000000000000000000000000000006a94d74f43000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000043697066733a2f2f626166796265696734667267666479676e746577356d6b3732376170686e6b636d766437716171746d377a3278707234377a737a737866717762712f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d446f6f646c65204d696e657273000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002444d000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _uri (string): ipfs://bafybeig4frgfdygntew5mk727aphnkcmvd7qaqtm7z2xpr47zszsxfqwbq/
Arg [1] : _name (string): Doodle Miners
Arg [2] : _symbol (string): DM
Arg [3] : _totalSupply (uint32): 4444
Arg [4] : _cost (uint256): 30000000000000000
Arg [5] : _open (bool): False

-----Encoded View---------------
14 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000180
Arg [3] : 000000000000000000000000000000000000000000000000000000000000115c
Arg [4] : 000000000000000000000000000000000000000000000000006a94d74f430000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000043
Arg [7] : 697066733a2f2f626166796265696734667267666479676e746577356d6b3732
Arg [8] : 376170686e6b636d766437716171746d377a3278707234377a737a7378667177
Arg [9] : 62712f0000000000000000000000000000000000000000000000000000000000
Arg [10] : 000000000000000000000000000000000000000000000000000000000000000d
Arg [11] : 446f6f646c65204d696e65727300000000000000000000000000000000000000
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [13] : 444d000000000000000000000000000000000000000000000000000000000000


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://0a0741fd2d805b3b7c070f588503497c2384895ff23e76b71f461741a8ac14b1
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.