Contract 0x58f57C3818D864C93E10D51Ee39ea1a4Ca75D2E5 1

Token Contract 
 
 
Txn Hash
Method
Block
From
To
Value
0x4d9d2c08aec45d749fd298db8dea110e091470e30c6b4146e8ad75934f83aa17Set Approval For...161250382022-12-06 10:04:593 days 15 hrs ago0xde2354b1bc994d16509fb019a2da967288eae89b IN  Wobblebug: WOB Token0 Ether0.00060914 13.06644774
0x466ec3bc92af244e0151fda4b58cd21b8402e302d6d60311055353f33baf5b61Set Approval For...160778332022-11-29 19:47:5910 days 5 hrs ago0x17954f449b94f29dd49383a63ede761b2ae2e8ef IN  Wobblebug: WOB Token0 Ether0.0005201 11.15643845
0xcc670e8d6a0c70ddc0d21eade91c55f4458bf30fd475c5ae0aa033e938ae7765Set Approval For...160283342022-11-22 21:50:2317 days 3 hrs ago0x0c148c98727223897a3df7d8f9668f8596e501af IN  Wobblebug: WOB Token0 Ether0.00060945 13.07311125
0x7eae3794437b6fd90a4357bdfaf7ee9b6603c717f2929a307ae0fc0aeea4511fSet Approval For...160020272022-11-19 5:39:1120 days 19 hrs agoENS Name joeatwal.eth IN  Wobblebug: WOB Token0 Ether0.00064053 13.73979583
0x9b748862bb3fcf7e6c9a7a23ae30a4198350f5813a1e85e6d877d723baf7c557Set Approval For...159853992022-11-16 21:55:3523 days 3 hrs agoENS Name greye.eth IN  Wobblebug: WOB Token0 Ether0.00109035 23.38853765
0xa664605f35a365d7830f87dcab62917a6b8710a6867718da3e013dda55500ce8Set Approval For...159222292022-11-08 2:08:5931 days 23 hrs ago0xf34f6dc279c7b6d3e235830078c78186885392fd IN  Wobblebug: WOB Token0 Ether0.00055176 11.83573189
0xf0d3181cc2e880c2eea815ca9d045ca057f3b22367d9445e3f3bcb0e0c0a9d2aSet Approval For...158874582022-11-03 5:38:2336 days 19 hrs ago0x95d234f2002540c9ee5bd5733b9aa868f01aa30c IN  Wobblebug: WOB Token0 Ether0.00062753 13.46099431
0xb92ed6350852f96d1d3f351957835cff4faf45a31f25fbe5eea2b624a44a0813Set Approval For...158858812022-11-03 0:21:4737 days 1 hr agoENS Name gofunkeyourself.eth IN  Wobblebug: WOB Token0 Ether0.00066115 14.18210556
0x84b0812a796ea2d0c0f78374bece40d3ebb4cee1cdd00a44c9a02fbcc1c20bdeSet Approval For...158833642022-11-02 15:55:1137 days 9 hrs ago0xdc58cd0571c4c4557f24dd0e33dd72581dae8109 IN  Wobblebug: WOB Token0 Ether0.00055447 11.89382105
0xa91321b0458bd48dd91cb94ecd862d3261a9b368e02c55137dc401454f39387cSet Approval For...158668602022-10-31 8:31:2339 days 16 hrs agoENS Name jtsong.eth IN  Wobblebug: WOB Token0 Ether0.00018694 7.54086414
0x762dce4fb087fe98c877973424d59ab7656b959a811cff597fb45252a0b8c211Set Approval For...158021272022-10-22 7:23:3548 days 18 hrs ago0x227f06b6478a2f4e4a83c3454ed5e9de6a22a910 IN  Wobblebug: WOB Token0 Ether0.000768 16.47409034
0x51fd898022376e69a3f1c64fb66dcee8ff38c6bcc7b47007769a7a23ef7600a5Safe Transfer Fr...157126042022-10-09 19:23:4761 days 6 hrs ago0xe1db3822239a27451b68a0cffc19a9160ee36f75 IN  Wobblebug: WOB Token0 Ether0.0036502 37.13176208
0xe8498dabbae6532bb8f39ee73a2e537a452afd685f58fc484812bfccbcd957feSet Approval For...157068002022-10-08 23:56:5962 days 1 hr agoENS Name samf.eth IN  Wobblebug: WOB Token0 Ether0.00101156 21.69856906
0xff2119b36ec6021ad53a9b3c94781e6c4081cebf9cc02e7844cb9fe9aaf36fefSafe Transfer Fr...156886462022-10-06 11:04:4764 days 14 hrs ago0x7610f9dcc952d01a90388b67cc69e7dcda88d64a IN  Wobblebug: WOB Token0 Ether0.00046715 5.31771689
0xfd3276e0644b84f24eb568c351207278e7a8a28c641a5aa7bac99ce1e0805525Transfer From156596942022-10-02 9:54:2368 days 15 hrs ago0xfbd549a283fda50375e4a48529ad6392f49fe31c IN  Wobblebug: WOB Token0 Ether0.00043299 5.09905462
0x5ea5bdadee3257555244840041413cae28a404648489eb29ffb7ef797b346bc5Set Approval For...156552542022-10-01 19:01:1169 days 6 hrs ago0x60c18b1a4a01ee7be478a66ca92ea2c61199ca83 IN  Wobblebug: WOB Token0 Ether0.00047734 10.23934861
0xf27c8969b74ed886bd62dd74218b707456a46129370dba4a0f6fde39f5769222Safe Transfer Fr...156476412022-09-30 17:27:4770 days 7 hrs ago0xaabc665b23e9ecc1e5842109eff88e5f25710b09 IN  Wobblebug: WOB Token0 Ether0.00158542 17.48735163
0x2730280392c0b650c866c3ffe3103ca350602ef87a5ba40c1387089bba1e3ed5Set Approval For...156192522022-09-26 18:12:5974 days 7 hrs ago0xe1db3822239a27451b68a0cffc19a9160ee36f75 IN  Wobblebug: WOB Token0 Ether0.00097725 20.9626234
0x512ab4dd2ccfe02daf2653046496974be48a97c513a944a0466a8fd7fd30cacaSet Approval For...156147682022-09-26 3:09:3574 days 22 hrs agoSpottie WiFi: Deployer IN  Wobblebug: WOB Token0 Ether0.00013772 5.55531176
0xdf8800a7834eb0402b9e9b7abf3db3a04990f987670b74e8b206645555289516Set Approval For...156127092022-09-25 20:14:3575 days 5 hrs agoENS Name vault.oxg.eth IN  Wobblebug: WOB Token0 Ether0.00043468 9.32411932
0xdf758174280165ae6576bf5237681a0871e8c36deace71a0e03f6e3cc47f813fSet Approval For...156031882022-09-24 12:22:1176 days 13 hrs agoENS Name newfreezer.eth IN  Wobblebug: WOB Token0 Ether0.00023201 4.97683441
0x4465a6090f0b059475e3fe7e9fe80960e857d2191f5ef2ecd05f9bf225b643a9Set Approval For...155992732022-09-23 23:16:2377 days 2 hrs ago0xe03170cc4b5eea1c130959918a5a957a7b28638b IN  Wobblebug: WOB Token0 Ether0.00029706 6.37222167
0x58a2e1b6ce06e7f60b7aff7a844d35899a478a53b63c6e2d2d86a983989ef6d9Set Approval For...155846522022-09-21 22:14:5979 days 3 hrs ago0x44ebca2488ef2edbec2200651a057c44152b67dd IN  Wobblebug: WOB Token0 Ether0.00091922 19.71784465
0x3f6df091819b62e36a9441dc419db2e95cec08713f818641dfaf6404c3e3a65dSet Approval For...155799192022-09-21 6:02:4779 days 19 hrs agoENS Name whattyrob.eth IN  Wobblebug: WOB Token0 Ether0.00062063 13.31287339
0xeab46709ca532f57e842a0284b38f80ace9c8912d15665cd7ac292dd18022d92Set Approval For...155691802022-09-19 17:56:1181 days 7 hrs agoENS Name millionairenft.eth IN  Wobblebug: WOB Token0 Ether0.0004156 16.76419754
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OVERVIEW

Wobblebug is the first NFT-powered music artist packed with real world utility and also a bad-ass virtual space-alien Metaverse DJ! By holding a Wobblebug NFT you become part of the Wobblebug family, helping decide the future of Wobblebug’s career, remix music, release on Wobb...

Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB Token0xe1db3822239a27451b68a0cffc19a9160ee36f753.4398 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB TokenENS Name rawtek.eth2.457 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB TokenWobblebug: Deployer3.9312 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB TokenDrippies: Deployer3.9312 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB Token0x927e093b623f90a0311c03009aa1d1df4cf086343.9312 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB TokenENS Name gabeperez.eth0.9828 Ether
0xac61251c0281d1448edf4b50ab5a7509cbc1e39d358a65f67af1f0d44d3e0502136191572021-11-15 8:03:12389 days 17 hrs ago Wobblebug: WOB Token0x435cd3902d1b4f4e842f2c0fd5028eee71dd099c0.9828 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB Token0xe1db3822239a27451b68a0cffc19a9160ee36f753.230325 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB TokenENS Name rawtek.eth2.307375 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB TokenWobblebug: Deployer3.6918 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB TokenDrippies: Deployer3.6918 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB Token0x927e093b623f90a0311c03009aa1d1df4cf086343.6918 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB TokenENS Name gabeperez.eth0.92295 Ether
0x905a35d2b80ba0f4269cbb556fd08185712283b6e196a5df8e4baa27996c20f3135772152021-11-08 17:57:58396 days 7 hrs ago Wobblebug: WOB Token0x435cd3902d1b4f4e842f2c0fd5028eee71dd099c0.92295 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB Token0xe1db3822239a27451b68a0cffc19a9160ee36f751.267875 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB TokenENS Name rawtek.eth0.905625 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB TokenWobblebug: Deployer1.449 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB TokenDrippies: Deployer1.449 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB Token0x927e093b623f90a0311c03009aa1d1df4cf086341.449 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB TokenENS Name gabeperez.eth0.36225 Ether
0xed91e9ab2bb665950218a477fcf071dd9fbe75d38cdcbc2bf5fb81a3a6abd3d7135453012021-11-03 17:50:15401 days 7 hrs ago Wobblebug: WOB Token0x435cd3902d1b4f4e842f2c0fd5028eee71dd099c0.36225 Ether
0x2183723d5cc69b41b887f8203be2e97ea3cbb1cd6f990a00ea4fd3d1c4e947f3135119062021-10-29 11:49:54406 days 13 hrs ago Wobblebug: WOB Token0xe1db3822239a27451b68a0cffc19a9160ee36f754.1895 Ether
0x2183723d5cc69b41b887f8203be2e97ea3cbb1cd6f990a00ea4fd3d1c4e947f3135119062021-10-29 11:49:54406 days 13 hrs ago Wobblebug: WOB TokenENS Name rawtek.eth2.9925 Ether
0x2183723d5cc69b41b887f8203be2e97ea3cbb1cd6f990a00ea4fd3d1c4e947f3135119062021-10-29 11:49:54406 days 13 hrs ago Wobblebug: WOB TokenWobblebug: Deployer4.788 Ether
0x2183723d5cc69b41b887f8203be2e97ea3cbb1cd6f990a00ea4fd3d1c4e947f3135119062021-10-29 11:49:54406 days 13 hrs ago Wobblebug: WOB TokenDrippies: Deployer4.788 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
Wobblebug

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion
File 1 of 14 : Wobblebug.sol
// SPDX-License-Identifier: MIT


//  o       o  o-o  o--o  o--o  o     o--o o--o  o   o  o-o  
//  |       | o   o |   | |   | |     |    |   | |   | o     
//  o   o   o |   | O--o  O--o  |     O-o  O--o  |   | |  -o 
//   \ / \ /  o   o |   | |   | |     |    |   | |   | o   | 
//    o   o    o-o  o--o  o--o  O---o o--o o--o   o-o   o-o  

// www.wobblebug.space
// www.twitter.com/wobblebug

// Wobblebug Team:

// Co-Founder | Music Producer: Kris Barman | @Wuki
// Co-Founder | Creative Director: Florian Tappeser | @digitalflowercg
// Project Manager | Blockchain Dev: Nick Zeigler | @AlphaMediaLabs
// 2D Artist | Co-Music Producer: Levi | @Rawtek
// Community Driver: Gabe Perez | @gabe__perez
// Creative Manager: JSTJR | @JSTJR
// Brand Manager: Courtney Roxanne | @roxanneonfilm
// Community Driver: Kaku | @Kakuberry

// Launched with Top Dog LaunchPad: https://topdogbeachclub.com/launchpad/

// By minting Wobblebugs, you are agreeing to our Terms of Service on our website
// as https://www.wobblebug.space/terms

pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

contract Wobblebug is ERC721Enumerable, Ownable, ReentrancyGuard {
    enum WhitelisterStatus { Invalid, Unclaimed, Claimed }
    struct SaleConfig {
        uint16 MAX_WOBBLEBUGS;
        uint8 DEV_RESERVED;
        uint128 WOBBLEBUG_PRICE;
        uint8 PUBLIC_SALE_MAX_PURCHASE;
        uint8 PRE_SALE_MAX_PURCHASE;
        bool PUBLIC_SALE_IS_ACTIVE;
        bool PRE_SALE_IS_ACTIVE;
    }

    string public WOBBLEBUGS_PROVENANCE;
    SaleConfig private _config;
    bool private _canReserve = true;
    string private _baseTokenURI;

    mapping (address => WhitelisterStatus) private _whitelistedAddresses;

    constructor (string memory name, string memory symbol, string memory baseTokenURI) ERC721(name, symbol) {
        _config = SaleConfig(
            10000, // supply
            150, // team reserve
            0.063 ether, // mint price
            20, // max mint public
            10, // max mint presale
            false, // public sale active
            false // pre sale active
        );
        _baseTokenURI = baseTokenURI;
    }
    
    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;

        payable(0x435Cd3902d1b4f4E842F2C0fd5028EEE71dd099C).transfer(((balance * 50) / 10) / 100);
        payable(0x0cB121E3e18c364F318A1FB97bd304e5855c8250).transfer(((balance * 50) / 10) / 100);
        payable(0x927e093B623F90a0311C03009aA1D1DF4cf08634).transfer(((balance * 200) / 10) / 100);
        payable(0x0048D02963b97445a012Ad6D44Bd38A0239C5B88).transfer(((balance * 200) / 10) / 100);
        payable(0x491dc513212E0b896690B6Fb4483929f0Abde975).transfer(((balance * 200) / 10) / 100);
        payable(0x0f075aC7186A8D43c1b6A819B5BCEff7c936d7Cf).transfer(((balance * 125) / 10) / 100);
        payable(0xe1Db3822239a27451b68a0cfFC19a9160EE36f75).transfer(((balance * 175) / 10) / 100);
    }

    function emergencyWithdraw() external onlyOwner {
        require(payable(msg.sender).send(address(this).balance), ":-(");
    }
    
    function setProvenanceHash(string memory provenanceHash) external onlyOwner {
        WOBBLEBUGS_PROVENANCE = provenanceHash;
    }

    function setBaseTokenURI(string memory baseTokenURI) external onlyOwner {
        _baseTokenURI = baseTokenURI;
    }

    function togglePublicSale() external onlyOwner {
        _config.PUBLIC_SALE_IS_ACTIVE = !_config.PUBLIC_SALE_IS_ACTIVE;
    }

    function togglePreSale() external onlyOwner {
        _config.PRE_SALE_IS_ACTIVE = !_config.PRE_SALE_IS_ACTIVE;
    }

    function isPublicSaleActive() external view returns (bool status) {
        return _config.PUBLIC_SALE_IS_ACTIVE;
    }

    function isPreSaleActive() external view returns (bool status) {
        return _config.PRE_SALE_IS_ACTIVE;
    }

    function isWhitelisted(address wallet) external view returns (bool status) {
        return _whitelistedAddresses[wallet] != WhitelisterStatus.Invalid;
    }
    
    function updateWhitelist(address[] memory addresses) external onlyOwner {
        for (uint256 i = 0; i < addresses.length; i++) {
            _whitelistedAddresses[addresses[i]] = WhitelisterStatus.Unclaimed;
        }
    }
    
    function tokensOfOwner(address _owner) external view returns(uint256[] memory ) {
        uint256 tokenCount = balanceOf(_owner);

        if (tokenCount == 0) {
            return new uint256[](0);
        } else {
            uint256[] memory result = new uint256[](tokenCount);

            for (uint256 index = 0; index < tokenCount; index++) {
                result[index] = tokenOfOwnerByIndex(_owner, index);
            }

            return result;
        }
    }
    
    function mintWobblebugs(uint numberOfTokens) external payable nonReentrant() {
        require(_config.PUBLIC_SALE_IS_ACTIVE || _config.PRE_SALE_IS_ACTIVE, "Sale must be active to mint Wobblebugs");
        require(msg.value == numberOfTokens * _config.WOBBLEBUG_PRICE, "Ether value sent is not correct");
        
        if (_config.PRE_SALE_IS_ACTIVE) {
            require(numberOfTokens > 0 && numberOfTokens <= _config.PRE_SALE_MAX_PURCHASE, "Can only mint max 10 tokens at a time");
            require(_whitelistedAddresses[msg.sender] != WhitelisterStatus.Claimed, "You've already minted");
            require(_whitelistedAddresses[msg.sender] == WhitelisterStatus.Unclaimed, "You are not whitelisted, wait for the public mint");
        }
        else if (_config.PUBLIC_SALE_IS_ACTIVE) {
            require(numberOfTokens > 0 && numberOfTokens <= _config.PUBLIC_SALE_MAX_PURCHASE, "Can only mint max 20 tokens at a time");
        }

        _mintMultiple(msg.sender, numberOfTokens);
        if (_config.PRE_SALE_IS_ACTIVE) _whitelistedAddresses[msg.sender] = WhitelisterStatus.Claimed;
    }

    function reserve(address to, uint256 amount) external onlyOwner {
        require(amount > 0 && amount <= _config.DEV_RESERVED);

        _mintMultiple(to, amount);
        _config.DEV_RESERVED = _config.DEV_RESERVED - uint8(amount);
    }

    function _mintMultiple(address owner, uint256 amount) private {
        require(totalSupply() + amount <= _config.MAX_WOBBLEBUGS, "Mint would exceed max supply of Wobblebugs");

        for (uint256 i = 0; i < amount; i++) {
            _safeMint(owner, totalSupply());
        }
    }

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

File 2 of 14 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface 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 3 of 14 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

File 4 of 14 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 5 of 14 : Context.sol
// SPDX-License-Identifier: MIT

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 6 of 14 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 7 of 14 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

File 8 of 14 : IERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @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);
}

File 9 of 14 : ERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @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();
    }
}

File 10 of 14 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface 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 11 of 14 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, 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 12 of 14 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: 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 {
        require(operator != _msgSender(), "ERC721: approve to caller");

        _operatorApprovals[_msgSender()][operator] = approved;
        emit ApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

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

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

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

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

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = 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 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 13 of 14 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"string","name":"baseTokenURI","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":"WOBBLEBUGS_PROVENANCE","outputs":[{"internalType":"string","name":"","type":"string"}],"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":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isPreSaleActive","outputs":[{"internalType":"bool","name":"status","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isPublicSaleActive","outputs":[{"internalType":"bool","name":"status","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"}],"name":"isWhitelisted","outputs":[{"internalType":"bool","name":"status","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberOfTokens","type":"uint256"}],"name":"mintWobblebugs","outputs":[],"stateMutability":"payable","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":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"reserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseTokenURI","type":"string"}],"name":"setBaseTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"provenanceHash","type":"string"}],"name":"setProvenanceHash","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":[],"name":"togglePreSale","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"togglePublicSale","outputs":[],"stateMutability":"nonpayable","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":[{"internalType":"address","name":"_owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"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"},{"inputs":[{"internalType":"address[]","name":"addresses","type":"address[]"}],"name":"updateWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000e00000000000000000000000000000000000000000000000000000000000000009576f62626c6562756700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003574f420000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002468747470733a2f2f6170692e6461726b706f72742e746563682f776f62626c656275672f00000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : name (string): Wobblebug
Arg [1] : symbol (string): WOB
Arg [2] : baseTokenURI (string): https://api.darkport.tech/wobblebug/

-----Encoded View---------------
10 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [4] : 576f62626c656275670000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 574f420000000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000024
Arg [8] : 68747470733a2f2f6170692e6461726b706f72742e746563682f776f62626c65
Arg [9] : 6275672f00000000000000000000000000000000000000000000000000000000


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.