Contract 0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab 1

 

Contract Overview

Balance:
1 MATIC

MATIC Value:
$0.46 (@ $0.46/MATIC)

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x069caed3e1a5664fa0198b7253fa355597ced4f23c536ec2a01e158e53bed07aBuy NFT299061172022-06-23 12:23:358 days 14 hrs ago0x3976cca9c906298bde79e59a916499038028ecc2 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.000903330001 30.000000062
0x0218fbaea09f79948899b3c0d5b8a738982a4a4eeca19caf8e675f37e3048ef3Buy NFT296424742022-06-16 15:57:3915 days 10 hrs ago0xffa6dc3045ca4233ecd86d592c6477d9826bfdd5 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.001092860865 36.294406212
0x4ebfb74ba1c5dac6cd171a067a6227d298c8ae2a70cf526d8fb39b3907acefa4Buy NFT296423992022-06-16 15:55:0515 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.002050839382 68.109308323
0x6ed29c2fa684a48d5af64e080876461c59f6b80473b2dbb68c76f17630f16459Buy NFT296423412022-06-16 15:53:0515 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.002640252765 87.68399473
0x0aeb44e13aa9945e05c7502908b6e216a807638dbf53d0f6166fbc1b391025dbBuy NFT295870872022-06-15 6:15:5716 days 20 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.00096185248 31.943558173
0xdc6682c858bcfd207067e44ab4e2cad5dddbdf751b1d9bf9080f3fd8c8164e5eBuy NFT295221852022-06-13 15:42:2618 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.01 MATIC0.002732749375 90.755849193
0xb21dd6a9786bab2470d1170798f44fbc329995dbd06515ee8f0164ffa3726bf8Fix Price Zero295220502022-06-13 15:37:4818 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.012205133246 465.720351301
0x85aeaf0ce3642ceae19eecddf1cdf8d2db27cf240a11a914081c073f413dd567Fix Price One295220392022-06-13 15:37:0618 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.017795065469 386.765169942
0x0834a68c58a149088b4e26d21085d02e1bf0dd5d5c03f3b2ff3be736f5bacd59Buy NFT295219462022-06-13 15:32:0418 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.01 MATIC0.003757610447 124.791951377
0x90312c77e81a1e146d125ec7de028ce19398065302f9a17aa20e2ef2288d445cBuy NFT295218352022-06-13 15:28:1418 days 10 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.01 MATIC0.003456529627 114.79292046
0xdf4800849fe68012472248d5c224b0703bc2b477e82c3c0b17b9496373e00e67Buy NFT292664322022-06-07 7:07:1524 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.01 MATIC0.000974604457 32.367057128
0xb1134a68b204973d081eef70c1942199b0a92492112c50d58b9b71d295cf81eaBuy NFT292652672022-06-07 6:27:0924 days 20 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0.001 MATIC0.00090333 30.000000013
0x66a717c855c10662bce832caa0c613a81ac4094246cc2b56a17d787d89cf5c15Safe Transfer Fr...292593342022-06-07 2:55:5424 days 23 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.001990620003 30.000000054
0x689ebb9bc671686cb4f8366abfe64a679d0c8de4745df4dd6743731919076bb6Buy NFT290226192022-06-01 6:21:4230 days 20 hrs ago0x07580b69fa115f440de9b645e4ed048c4fde9064 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.005631180011 30.000000059
0xe0e65f7ea14ac19e184efd8af749c1382a2fbf76dbbfb9490813776080296752Buy NFT284200802022-05-17 7:06:2945 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.005120529066 30.013768955
0x6741ade7cbcea895113365f0a97fc5b6519160770d5a122ceca4ae7e1fe9671aFix Price Zero284199962022-05-17 7:03:3745 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.000726543305 30.013768959
0xfbcd6c76ba8115923f62112d1f31f81b5c26328bdc47e4c06e9a14d89147b87aFix Price Three284199862022-05-17 7:03:1745 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.000723932107 30.013768959
0x03f6d5026513e1031b29c59890cac401636d5aaf5f24e8fec73b3f076e71c53cFix Price One284199792022-05-17 7:03:0345 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.000723271804 30.013768963
0x5935df4d9596eaa7c5f774c0addc17c5261b092e3403e7ac5fe396b18e7466e9Fix Price Five284199712022-05-17 7:02:4745 days 19 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.000725222699 30.013768963
0xeda3e1c1427d4c674a5b9837fcd4578090675aeaf576a6d5a6b430bba59f4a4fFix Price Three284003702022-05-16 19:22:4946 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.003068203466 66.566941476
0xd65005666550f25dd495d12fa26cf23676fd062d6528a4b227d5fc4c58ac9b92Fix Price One284003622022-05-16 19:22:3346 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.00335143638 72.746611247
0x9a9491667688bcec5610fecd5cdb36a529a96a85e46b2c62e914d1ec5e35834dBuy NFT284003412022-05-16 19:21:5146 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab1 MATIC0.012425848667 72.746611247
0x6b25cabca7be408246ec0c034173f9ff71f65255595b884425187dce62e32d2eFix Price Five284003262022-05-16 19:21:2146 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.00324764672 70.394423333
0xd88a72f334a5e9f5af8cf34997a0f2da9f94e7df4531019d838c38f9bc818100Buy NFT284000522022-05-16 19:11:5346 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.00816455624 47.856208109
0x728f4e1b16b35029c90bfa381125b0ff2a1aead1b3cb52b86d9f7a3c3668a201Fix Price Three283995962022-05-16 18:56:1346 days 7 hrs ago0x56a99fb34c35c2629bfbd29b46b9b6fa08fee637 IN  0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0 MATIC0.001441070539 59.745876426
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0x10f1cf05bb449b91a56546b0131452a92831a01ba9b3d2d72210dfa2b0233c65238186922022-01-17 7:48:22165 days 18 hrs ago 0x324ecf8184d84ad7b8687b2130ec82ac0d3af3ab0x56a99fb34c35c2629bfbd29b46b9b6fa08fee6371,000 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
FunkyAliens

Compiler Version
v0.8.6+commit.11564f7e

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 12 : FunkyAliens.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @title FunkyAliens
 * FunkyAliens - ERC-721 FunkyAliens
 */
contract FunkyAliens is ERC721, Ownable {

    mapping(address => bool) private _minters;
    mapping(uint256 => bool) private _revealedNFTs;
    mapping(address => bool) private _whitelist;

    address openseaProxyAddress;
    string public contract_ipfs_json;
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIdCounter;
    uint256 HARD_CAP = 10000;
    bool public is_collection_revealed = false;
    string public notrevealed_nft = "https://ipfs.io/ipfs/QmPNn9vEQWnQHR1XQejtG7PRHqPwGQ1N2F1i3zjChSJKai";
    string public contract_base_uri = "https://ipfs.io/ipfs/QmaoKoGDFfXh2a83Ei9uFNCWW9gjfP1EsGPa4xwwBjUN4L/";
    uint256 minting_price_0 = 50 ether;
    uint256 minting_price_1 = 70 ether;
    uint256 minting_price_3 = 180 ether;
    uint256 minting_price_5 = 250 ether;
    bool public is_whitelisted = true;

    constructor(
        address _openseaProxyAddress,
        string memory _name,
        string memory _ticker,
        string memory _contract_ipfs
    ) ERC721(_name, _ticker) {
        openseaProxyAddress = _openseaProxyAddress;
        contract_ipfs_json = _contract_ipfs;
    }

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

    function totalSupply() public view returns (uint256) {
        return _tokenIdCounter.current();
    }

    function tokenURI(uint256 _tokenId)
        public
        view
        override(ERC721)
        returns (string memory)
    {
        if(is_collection_revealed == true){
            string memory _tknId = Strings.toString(_tokenId);
            return string(abi.encodePacked(contract_base_uri, _tknId, ".json"));
        } else {
            if(_revealedNFTs[_tokenId] == true) {
                string memory _tknId = Strings.toString(_tokenId);
                return string(abi.encodePacked(contract_base_uri, _tknId, ".json"));
            } else {
                return notrevealed_nft;
            }
        }
    }

    function tokensOfOwner(address _owner) external view returns(uint256[] memory ownerTokens) {
        uint256 tokenCount = balanceOf(_owner);
        if (tokenCount == 0) {
            // Return an empty array
            return new uint256[](0);
        } else {
            uint256[] memory result = new uint256[](tokenCount);
            uint256 totalTkns = totalSupply();
            uint256 resultIndex = 0;
            uint256 tnkId;

            for (tnkId = 1; tnkId <= totalTkns; tnkId++) {
                if (ownerOf(tnkId) == _owner) {
                    result[resultIndex] = tnkId;
                    resultIndex++;
                }
            }

            return result;
        }
    }

    function contractURI() public view returns (string memory) {
        return contract_ipfs_json;
    }

    function fixContractURI(string memory _newURI) public onlyOwner {
        contract_ipfs_json = _newURI;
    }

    function fixBaseURI(string memory _newURI) public onlyOwner {
        contract_base_uri = _newURI;
    }

    /*
        This method will allow owner reveal the collection
     */

    function revealCollection() public onlyOwner {
        is_collection_revealed = true;
    }

    /*
        This method will reveal the NFT
    */
    function revealNFT(uint256 _tokenId) public returns (bool) {
        require(ownerOf(_tokenId) == msg.sender, "FunkyAliens: You must own the NFT");
        _revealedNFTs[_tokenId] = true;
        return true;
    }

    /*
        This method will add or remove minting roles.
    */
    function isMinter(address _toCheck) public view returns (bool) {
        return _minters[_toCheck] == true;
    }

    function addMinter(address _toAdd) public onlyOwner {
        _minters[_toAdd] = true;
    }

    function removeMinter(address _toRemove) public onlyOwner {
        _minters[_toRemove] = false;
    }

    /*
        This method will add or remove minting roles.
    */
    function isWhitelisted(address _toCheck) public view returns (bool) {
        return _whitelist[_toCheck] == true;
    }

    function addWhitelist(address _toAdd) public onlyOwner {
        _whitelist[_toAdd] = true;
    }

    function removeWhitelist(address _toRemove) public onlyOwner {
        _whitelist[_toRemove] = false;
    }

    /*
        This method will allow anyone to mint the token.
    */
    function buyNFT()
        public
        payable
    {
        uint256 amount = 0;
        if(is_whitelisted == true){
            require(isWhitelisted(msg.sender), 'FunkyAliens: Not whitelisted');
            require(msg.value == minting_price_0, 'FunkyAliens: Presale amount invalid');
            amount = 1;
        }else{
            require(msg.value == minting_price_1 || msg.value == minting_price_3 || msg.value == minting_price_5, 'FunkyAliens: Public sale amount invalid');
            if(msg.value == minting_price_1){
                amount = 1;
            }
            if(msg.value == minting_price_3){
                amount = 3;
            }
            if(msg.value == minting_price_5){
                amount = 5;
            }
        }
        require(amount >= 1, 'FunkyAliens: Amount should be at least 1');
        uint256 reached = amount + _tokenIdCounter.current();
        require(reached <= HARD_CAP, "FunkyAliens: Hard cap reached");
        uint j = 0;
        for (j = 0; j < amount; j++) {
            _tokenIdCounter.increment();
            uint256 newTokenId = _tokenIdCounter.current();
            _mint(msg.sender, newTokenId);
        }
    }

    function fixPriceZero(uint256 price) public onlyOwner {
        minting_price_0 = price;
    }

    function fixPriceOne(uint256 price) public onlyOwner {
        minting_price_1 = price;
    }

    function fixPriceThree(uint256 price) public onlyOwner {
        minting_price_3 = price;
    }

    function fixPriceFive(uint256 price) public onlyOwner {
        minting_price_5 = price;
    }

    function fixWhitelisting(bool state) public onlyOwner {
        is_whitelisted = state;
    }
    
    /*
        This method will mint the token to provided user, can be called just by the proxy address.
    */
    function proxyMintNFT(address _to)
        public
    {
        require(isMinter(msg.sender), "FunkyAliens: Only minters can mint");
        uint256 reached = _tokenIdCounter.current() + 1;
        require(reached <= HARD_CAP, "FunkyAliens: Hard cap reached");
        _tokenIdCounter.increment();
        uint256 newTokenId = _tokenIdCounter.current();
        _mint(_to, newTokenId);
    }

    /*
        This method will allow owner to get the balance of the smart contract
     */

    function getBalance() public view returns (uint256) {
        return address(this).balance;
    }

    /*
        This method will allow owner tow withdraw all ethers
     */

    function withdrawMatic() public onlyOwner {
        uint256 balance = address(this).balance;
        require(balance > 0, 'FunkyAliens: Nothing to withdraw!');
        payable(msg.sender).transfer(balance);
    }

    /**
     * Override isApprovedForAll to whitelist proxy accounts
     */
    function isApprovedForAll(address _owner, address _operator)
        public
        view
        override
        returns (bool isOperator)
    {

        // Approving for UMi and Opensea address
        if (_operator == address(openseaProxyAddress)) {
            return true;
        }

        return super.isApprovedForAll(_owner, _operator);
    }
}

File 2 of 12 : 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 12 : 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 12 : 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 12 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

File 6 of 12 : 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 7 of 12 : 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);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private 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 8 of 12 : 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 9 of 12 : 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 10 of 12 : 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 11 of 12 : 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(to).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 12 of 12 : 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": "berlin",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_openseaProxyAddress","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_ticker","type":"string"},{"internalType":"string","name":"_contract_ipfs","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":[{"internalType":"address","name":"_toAdd","type":"address"}],"name":"addMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_toAdd","type":"address"}],"name":"addWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"buyNFT","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"contractURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"contract_base_uri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"contract_ipfs_json","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_newURI","type":"string"}],"name":"fixBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_newURI","type":"string"}],"name":"fixContractURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"fixPriceFive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"fixPriceOne","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"fixPriceThree","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"fixPriceZero","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"state","type":"bool"}],"name":"fixWhitelisting","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"isOperator","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_toCheck","type":"address"}],"name":"isMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_toCheck","type":"address"}],"name":"isWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"is_collection_revealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"is_whitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"notrevealed_nft","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":[{"internalType":"address","name":"_to","type":"address"}],"name":"proxyMintNFT","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_toRemove","type":"address"}],"name":"removeMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_toRemove","type":"address"}],"name":"removeWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revealCollection","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"revealNFT","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"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":[{"internalType":"address","name":"_owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"ownerTokens","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":[],"name":"withdrawMatic","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

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

-----Decoded View---------------
Arg [0] : _openseaProxyAddress (address): 0x58807bad0b376efc12f5ad86aac70e78ed67deae
Arg [1] : _name (string): FunkyAliens
Arg [2] : _ticker (string): ALIENS
Arg [3] : _contract_ipfs (string): https://ipfs.io/ipfs/bafkreib7zq6bidhcedf3vdgvgon7c36guqn4qix23rjxlvf7w2yuilimoe

-----Encoded View---------------
12 Constructor Arguments found :
Arg [0] : 00000000000000000000000058807bad0b376efc12f5ad86aac70e78ed67deae
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [4] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [5] : 46756e6b79416c69656e73000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [7] : 414c49454e530000000000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000050
Arg [9] : 68747470733a2f2f697066732e696f2f697066732f6261666b72656962377a71
Arg [10] : 3662696468636564663376646776676f6e376333366775716e34716978323372
Arg [11] : 6a786c76663777327975696c696d6f6500000000000000000000000000000000


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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