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0x2f133a06fe4fc845E41261aCFF6831a727ea9062
 

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Contract Source Code Verified (Exact Match)

Contract Name:
MintingManager

Compiler Version
v0.8.0+commit.c7dfd78e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 20 : MintingManager.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

import '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol';
import '@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol';

import './cns/IResolver.sol';
import './cns/IMintingController.sol';
import './cns/IURIPrefixController.sol';
import './IMintingManager.sol';
import './IUNSRegistry.sol';
import './metatx/Relayer.sol';
import './roles/MinterRole.sol';

/**
 * @title MintingManager
 * @dev Defines the functions for distribution of Second Level Domains (SLD)s.
 */
contract MintingManager is Initializable, ContextUpgradeable, OwnableUpgradeable, MinterRole, Relayer, IMintingManager {
    string public constant NAME = 'UNS: Minting Manager';
    string public constant VERSION = '0.1.0';

    IUNSRegistry public unsRegistry;
    IMintingController public cnsMintingController;
    IURIPrefixController public cnsURIPrefixController;
    IResolver public cnsResolver;

    /**
     * @dev Mapping TLD `namehash` to TLD label
     *
     * `namehash` = uint256(keccak256(abi.encodePacked(uint256(0x0), keccak256(abi.encodePacked(label)))))
     */
    mapping(uint256 => string) internal _tlds;

    /**
     * @dev bytes4(keccak256('mintSLD(address,uint256,string)')) == 0xae2ad903
     */
    bytes4 private constant _SIG_MINT = 0xae2ad903;

    /**
     * @dev bytes4(keccak256('safeMintSLD(address,uint256,string)')) == 0x4c1819e0
     */
    bytes4 private constant _SIG_SAFE_MINT = 0x4c1819e0;

    /**
     * @dev bytes4(keccak256('safeMintSLD(address,uint256,string,bytes)')) == 0x58839d6b
     */
    bytes4 private constant _SIG_SAFE_MINT_DATA = 0x58839d6b;

    /**
     * @dev bytes4(keccak256('mintSLDWithRecords(address,uint256,string,string[],string[])')) == 0x39ccf4d0
     */
    bytes4 private constant _SIG_MINT_WITH_RECORDS = 0x39ccf4d0;

    /**
     * @dev bytes4(keccak256('safeMintSLDWithRecords(address,uint256,string,string[],string[])')) == 0x27bbd225
     */
    bytes4 private constant _SIG_SAFE_MINT_WITH_RECORDS = 0x27bbd225;

    /**
     * @dev bytes4(keccak256('safeMintSLDWithRecords(address,uint256,string,string[],string[],bytes)')) == 0x6a2d2256
     */
    bytes4 private constant _SIG_SAFE_MINT_WITH_RECORDS_DATA = 0x6a2d2256;

    modifier onlyRegisteredTld(uint256 tld) {
        require(bytes(_tlds[tld]).length > 0, 'MintingManager: TLD_NOT_REGISTERED');
        _;
    }

    function initialize(
        IUNSRegistry unsRegistry_,
        IMintingController cnsMintingController_,
        IURIPrefixController cnsURIPrefixController_,
        IResolver cnsResolver_
    ) public initializer {
        unsRegistry = unsRegistry_;
        cnsMintingController = cnsMintingController_;
        cnsURIPrefixController = cnsURIPrefixController_;
        cnsResolver = cnsResolver_;

        __Ownable_init_unchained();
        __MinterRole_init_unchained();

        // Relayer is required to be a minter
        _addMinter(address(this));

        _tlds[0x0f4a10a4f46c288cea365fcf45cccf0e9d901b945b9829ccdb54c10dc3cb7a6f] = 'crypto';

        string[8] memory tlds = ['wallet', 'coin', 'x', 'nft', 'blockchain', 'bitcoin', '888', 'dao'];
        for (uint256 i = 0; i < tlds.length; i++) {
            uint256 namehash = uint256(keccak256(abi.encodePacked(uint256(0x0), keccak256(abi.encodePacked(tlds[i])))));
            _tlds[namehash] = tlds[i];

            if (!unsRegistry.exists(namehash)) {
                unsRegistry.mint(address(0xdead), namehash, tlds[i]);
            }
        }
    }

    function mintSLD(
        address to,
        uint256 tld,
        string calldata label
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _mintSLD(to, tld, label);
    }

    function safeMintSLD(
        address to,
        uint256 tld,
        string calldata label
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _safeMintSLD(to, tld, label, '');
    }

    function safeMintSLD(
        address to,
        uint256 tld,
        string calldata label,
        bytes calldata data
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _safeMintSLD(to, tld, label, data);
    }

    function mintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _mintSLDWithRecords(to, tld, label, keys, values);
    }

    function safeMintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _safeMintSLDWithRecords(to, tld, label, keys, values, '');
    }

    function safeMintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values,
        bytes calldata data
    ) external override onlyMinter onlyRegisteredTld(tld) {
        _safeMintSLDWithRecords(to, tld, label, keys, values, data);
    }

    function claim(uint256 tld, string calldata label) external override onlyRegisteredTld(tld) {
        _mintSLD(_msgSender(), tld, _freeSLDLabel(label));
    }

    function claimTo(
        address to,
        uint256 tld,
        string calldata label
    ) external override onlyRegisteredTld(tld) {
        _mintSLD(to, tld, _freeSLDLabel(label));
    }

    function claimToWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external override onlyRegisteredTld(tld) {
        _mintSLDWithRecords(to, tld, _freeSLDLabel(label), keys, values);
    }

    function setResolver(address resolver) external onlyOwner {
        cnsResolver = IResolver(resolver);
    }

    function setTokenURIPrefix(string calldata prefix) external override onlyOwner {
        unsRegistry.setTokenURIPrefix(prefix);
        if (address(cnsURIPrefixController) != address(0x0)) {
            cnsURIPrefixController.setTokenURIPrefix(prefix);
        }
    }

    function _verifyRelaySigner(address signer) internal view override {
        super._verifyRelaySigner(signer);
        require(isMinter(signer), 'MintingManager: SIGNER_IS_NOT_MINTER');
    }

    function _verifyRelayCall(bytes4 funcSig, bytes calldata) internal pure override {
        bool isSupported =
            funcSig == _SIG_MINT ||
                funcSig == _SIG_SAFE_MINT ||
                funcSig == _SIG_SAFE_MINT_DATA ||
                funcSig == _SIG_MINT_WITH_RECORDS ||
                funcSig == _SIG_SAFE_MINT_WITH_RECORDS ||
                funcSig == _SIG_SAFE_MINT_WITH_RECORDS_DATA;

        require(isSupported, 'MintingManager: UNSUPPORTED_RELAY_CALL');
    }

    function _mintSLD(
        address to,
        uint256 tld,
        string memory label
    ) private {
        if (tld == 0x0f4a10a4f46c288cea365fcf45cccf0e9d901b945b9829ccdb54c10dc3cb7a6f) {
            cnsMintingController.mintSLDWithResolver(to, label, address(cnsResolver));
        } else {
            unsRegistry.mint(to, _childId(tld, label), _uri(tld, label));
        }
    }

    function _safeMintSLD(
        address to,
        uint256 tld,
        string calldata label,
        bytes memory data
    ) private {
        if (tld == 0x0f4a10a4f46c288cea365fcf45cccf0e9d901b945b9829ccdb54c10dc3cb7a6f) {
            cnsMintingController.safeMintSLDWithResolver(to, label, address(cnsResolver), data);
        } else {
            unsRegistry.safeMint(to, _childId(tld, label), _uri(tld, label), data);
        }
    }

    function _mintSLDWithRecords(
        address to,
        uint256 tld,
        string memory label,
        string[] calldata keys,
        string[] calldata values
    ) private {
        uint256 tokenId = _childId(tld, label);
        if (tld == 0x0f4a10a4f46c288cea365fcf45cccf0e9d901b945b9829ccdb54c10dc3cb7a6f) {
            cnsMintingController.mintSLDWithResolver(to, label, address(cnsResolver));
            if (keys.length > 0) {
                cnsResolver.preconfigure(keys, values, tokenId);
            }
        } else {
            unsRegistry.mintWithRecords(to, tokenId, _uri(tld, label), keys, values);
        }
    }

    function _safeMintSLDWithRecords(
        address to,
        uint256 tld,
        string memory label,
        string[] calldata keys,
        string[] calldata values,
        bytes memory data
    ) private {
        uint256 tokenId = _childId(tld, label);
        if (tld == 0x0f4a10a4f46c288cea365fcf45cccf0e9d901b945b9829ccdb54c10dc3cb7a6f) {
            cnsMintingController.safeMintSLDWithResolver(to, label, address(cnsResolver), data);
            if (keys.length > 0) {
                cnsResolver.preconfigure(keys, values, tokenId);
            }
        } else {
            unsRegistry.safeMintWithRecords(to, tokenId, _uri(tld, label), keys, values, data);
        }
    }

    function _childId(uint256 tokenId, string memory label) internal pure returns (uint256) {
        require(bytes(label).length != 0, 'MintingManager: LABEL_EMPTY');
        return uint256(keccak256(abi.encodePacked(tokenId, keccak256(abi.encodePacked(label)))));
    }

    function _freeSLDLabel(string calldata label) private pure returns (string memory) {
        return string(abi.encodePacked('udtestdev-', label));
    }

    function _uri(uint256 tld, string memory label) private view returns (string memory) {
        return string(abi.encodePacked(label, '.', _tlds[tld]));
    }

    // Reserved storage space to allow for layout changes in the future.
    uint256[50] private __gap;
}

File 2 of 20 : OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal initializer {
        __Context_init_unchained();
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal initializer {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
    uint256[49] private __gap;
}

File 3 of 20 : Initializable.sol
// SPDX-License-Identifier: MIT

// solhint-disable-next-line compiler-version
pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {

    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

File 4 of 20 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/*
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
    uint256[50] private __gap;
}

File 5 of 20 : ECDSAUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSAUpgradeable {
    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
        } else if (signature.length == 64) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let vs := mload(add(signature, 0x40))
                r := mload(add(signature, 0x20))
                s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
                v := add(shr(255, vs), 27)
            }
        } else {
            revert("ECDSA: invalid signature length");
        }

        return recover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 6 of 20 : IResolver.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

interface IResolver {
    function preconfigure(
        string[] memory keys,
        string[] memory values,
        uint256 tokenId
    ) external;

    function get(string calldata key, uint256 tokenId) external view returns (string memory);

    function getMany(string[] calldata keys, uint256 tokenId) external view returns (string[] memory);

    function getByHash(uint256 keyHash, uint256 tokenId) external view returns (string memory key, string memory value);

    function getManyByHash(uint256[] calldata keyHashes, uint256 tokenId)
        external
        view
        returns (string[] memory keys, string[] memory values);

    function set(
        string calldata key,
        string calldata value,
        uint256 tokenId
    ) external;
}

File 7 of 20 : IMintingController.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

interface IMintingController {
    function mintSLD(address to, string calldata label) external;

    function safeMintSLD(address to, string calldata label) external;

    function safeMintSLD(
        address to,
        string calldata label,
        bytes calldata data
    ) external;

    function mintSLDWithResolver(
        address to,
        string memory label,
        address resolver
    ) external;

    function safeMintSLDWithResolver(
        address to,
        string calldata label,
        address resolver
    ) external;

    function safeMintSLDWithResolver(
        address to,
        string calldata label,
        address resolver,
        bytes calldata data
    ) external;
}

File 8 of 20 : IURIPrefixController.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

interface IURIPrefixController {
    function setTokenURIPrefix(string calldata prefix) external;
}

File 9 of 20 : IMintingManager.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

interface IMintingManager {
    /**
     * @dev Mints a Second Level Domain (SLD).
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     */
    function mintSLD(
        address to,
        uint256 tld,
        string calldata label
    ) external;

    /**
     * @dev Safely mints a Second Level Domain (SLD).
     * Implements a ERC721Reciever check unlike mintSLD.
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     */
    function safeMintSLD(
        address to,
        uint256 tld,
        string calldata label
    ) external;

    /**
     * @dev Safely mints a Second Level Domain (SLD).
     * Implements a ERC721Reciever check unlike mintSLD.
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     * @param data bytes data to send along with a safe transfer check.
     */
    function safeMintSLD(
        address to,
        uint256 tld,
        string calldata label,
        bytes calldata data
    ) external;

    /**
     * @dev Mints a Second Level Domain (SLD) with records.
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     * @param keys Record keys.
     * @param values Record values.
     */
    function mintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external;

    /**
     * @dev Mints a Second Level Domain (SLD) with records.
     * Implements a ERC721Reciever check unlike mintSLD.
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     * @param keys Record keys.
     * @param values Record values.
     */
    function safeMintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external;

    /**
     * @dev Mints a Second Level Domain (SLD) with records.
     * Implements a ERC721Reciever check unlike mintSLD.
     * @param to address to mint the new SLD to.
     * @param tld id of parent token.
     * @param label SLD label to mint.
     * @param keys Record keys.
     * @param values Record values.
     * @param data bytes data to send along with a safe transfer check.
     */
    function safeMintSLDWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values,
        bytes calldata data
    ) external;

    /**
     * @dev Claims free domain. The fuction adds prefix `udtestdev-` to label.
     * @param tld id of parent token
     * @param label SLD label to mint
     */
    function claim(uint256 tld, string calldata label) external;

    /**
     * @dev Claims free domain. The fuction adds prefix `udtestdev-` to label.
     * @param to address to mint the new SLD to
     * @param tld id of parent token
     * @param label SLD label to mint
     */
    function claimTo(
        address to,
        uint256 tld,
        string calldata label
    ) external;

    /**
     * @dev Claims free domain. The fuction adds prefix `udtestdev-` to label.
     * @param to address to mint the new SLD to
     * @param tld id of parent token
     * @param label SLD label to mint
     */
    function claimToWithRecords(
        address to,
        uint256 tld,
        string calldata label,
        string[] calldata keys,
        string[] calldata values
    ) external;

    /**
     * @dev Function to set the token URI Prefix for all tokens.
     * @param prefix string URI to assign
     */
    function setTokenURIPrefix(string calldata prefix) external;
}

File 10 of 20 : IUNSRegistry.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

import '@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol';

import './IRecordStorage.sol';

interface IUNSRegistry is IERC721MetadataUpgradeable, IRecordStorage {
    event NewURI(uint256 indexed tokenId, string uri);

    event NewURIPrefix(string prefix);

    /**
     * @dev Function to set the token URI Prefix for all tokens.
     * @param prefix string URI to assign
     */
    function setTokenURIPrefix(string calldata prefix) external;

    /**
     * @dev Returns whether the given spender can transfer a given token ID.
     * @param spender address of the spender to query
     * @param tokenId uint256 ID of the token to be transferred
     * @return bool whether the msg.sender is approved for the given token ID,
     * is an operator of the owner, or is the owner of the token
     */
    function isApprovedOrOwner(address spender, uint256 tokenId) external view returns (bool);

    /**
     * @dev Gets the resolver of the specified token ID.
     * @param tokenId uint256 ID of the token to query the resolver of
     * @return address currently marked as the resolver of the given token ID
     */
    function resolverOf(uint256 tokenId) external view returns (address);

    /**
     * @dev Provides child token (subdomain) of provided tokenId.
     * @param tokenId uint256 ID of the token
     * @param label label of subdomain (for `aaa.bbb.crypto` it will be `aaa`)
     */
    function childIdOf(uint256 tokenId, string calldata label) external pure returns (uint256);

    /**
     * @dev Existence of token.
     * @param tokenId uint256 ID of the token
     */
    function exists(uint256 tokenId) external view returns (bool);

    /**
     * @dev Transfer domain ownership without resetting domain records.
     * @param to address of new domain owner
     * @param tokenId uint256 ID of the token to be transferred
     */
    function setOwner(address to, uint256 tokenId) external;

    /**
     * @dev Burns `tokenId`. See {ERC721-_burn}.
     *
     * Requirements:
     *
     * - The caller must own `tokenId` or be an approved operator.
     */
    function burn(uint256 tokenId) external;

    /**
     * @dev Mints token.
     * @param to address to mint the new SLD to.
     * @param tokenId id of token.
     * @param uri domain URI.
     */
    function mint(
        address to,
        uint256 tokenId,
        string calldata uri
    ) external;

    /**
     * @dev Safely mints token.
     * Implements a ERC721Reciever check unlike mint.
     * @param to address to mint the new SLD to.
     * @param tokenId id of token.
     * @param uri domain URI.
     */
    function safeMint(
        address to,
        uint256 tokenId,
        string calldata uri
    ) external;

    /**
     * @dev Safely mints token.
     * Implements a ERC721Reciever check unlike mint.
     * @param to address to mint the new SLD to.
     * @param tokenId id of token.
     * @param uri domain URI.
     * @param data bytes data to send along with a safe transfer check
     */
    function safeMint(
        address to,
        uint256 tokenId,
        string calldata uri,
        bytes calldata data
    ) external;

    /**
     * @dev Mints token with records
     * @param to address to mint the new SLD to
     * @param tokenId id of token
     * @param keys New record keys
     * @param values New record values
     * @param uri domain URI
     */
    function mintWithRecords(
        address to,
        uint256 tokenId,
        string calldata uri,
        string[] calldata keys,
        string[] calldata values
    ) external;

    /**
     * @dev Safely mints token with records
     * @param to address to mint the new SLD to
     * @param tokenId id of token
     * @param keys New record keys
     * @param values New record values
     * @param uri domain URI
     */
    function safeMintWithRecords(
        address to,
        uint256 tokenId,
        string calldata uri,
        string[] calldata keys,
        string[] calldata values
    ) external;

    /**
     * @dev Safely mints token with records
     * @param to address to mint the new SLD to
     * @param tokenId id of token
     * @param keys New record keys
     * @param values New record values
     * @param uri domain URI
     * @param data bytes data to send along with a safe transfer check
     */
    function safeMintWithRecords(
        address to,
        uint256 tokenId,
        string calldata uri,
        string[] calldata keys,
        string[] calldata values,
        bytes calldata data
    ) external;
}

File 11 of 20 : Relayer.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

import '@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol';

abstract contract Relayer is ContextUpgradeable {
    using ECDSAUpgradeable for bytes32;

    event Relayed(address indexed sender, address indexed signer, bytes4 indexed funcSig, bytes32 digest);

    /**
     * Relay allows execute transaction on behalf of whitelisted minter.
     * The function verify signature of call data parameter before execution.
     * It allows anybody send transaction on-chain when minter has provided proper parameters.
     * The function allows to relaying calls of fixed functions. The restriction defined in function `verifyCall`
     */
    function relay(bytes calldata data, bytes calldata signature) external returns (bytes memory) {
        bytes32 digest = keccak256(data);
        address signer = keccak256(abi.encodePacked(digest, address(this))).toEthSignedMessageHash().recover(signature);

        bytes4 funcSig;
        bytes memory _data = data;
        /* solium-disable-next-line security/no-inline-assembly */
        assembly {
            funcSig := mload(add(_data, add(0x20, 0)))
        }

        _verifyRelaySigner(signer);
        _verifyRelayCall(funcSig, data);

        /* solium-disable-next-line security/no-low-level-calls */
        (bool success, bytes memory result) = address(this).call(data);
        if (success == false) {
            /* solium-disable-next-line security/no-inline-assembly */
            assembly {
                let ptr := mload(0x40)
                let size := returndatasize()
                returndatacopy(ptr, 0, size)
                revert(ptr, size)
            }
        }

        emit Relayed(_msgSender(), signer, funcSig, digest);
        return result;
    }

    function _verifyRelaySigner(address signer) internal view virtual {
        require(signer != address(0), 'Relayer: SIGNATURE_IS_INVALID');
    }

    function _verifyRelayCall(bytes4 funcSig, bytes calldata data) internal pure virtual {}
}

File 12 of 20 : MinterRole.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

import '@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol';

abstract contract MinterRole is OwnableUpgradeable, AccessControlUpgradeable {
    bytes32 public constant MINTER_ROLE = keccak256('MINTER_ROLE');

    modifier onlyMinter() {
        require(isMinter(_msgSender()), 'MinterRole: CALLER_IS_NOT_MINTER');
        _;
    }

    // solhint-disable-next-line func-name-mixedcase
    function __MinterRole_init() internal initializer {
        __Ownable_init_unchained();
        __AccessControl_init_unchained();
        __MinterRole_init_unchained();
    }

    // solhint-disable-next-line func-name-mixedcase
    function __MinterRole_init_unchained() internal initializer {}

    function isMinter(address account) public view returns (bool) {
        return hasRole(MINTER_ROLE, account);
    }

    function addMinter(address account) public onlyOwner {
        _addMinter(account);
    }

    function addMinters(address[] memory accounts) public onlyOwner {
        for (uint256 index = 0; index < accounts.length; index++) {
            _addMinter(accounts[index]);
        }
    }

    function removeMinter(address account) public onlyOwner {
        _removeMinter(account);
    }

    function removeMinters(address[] memory accounts) public onlyOwner {
        for (uint256 index = 0; index < accounts.length; index++) {
            _removeMinter(accounts[index]);
        }
    }

    function renounceMinter() public {
        _removeMinter(_msgSender());
    }

    /**
     * Renounce minter account with funds' forwarding
     */
    function closeMinter(address payable receiver) external payable onlyMinter {
        require(receiver != address(0x0), 'MinterRole: RECEIVER_IS_EMPTY');

        renounceMinter();
        receiver.transfer(msg.value);
    }

    /**
     * Replace minter account by new account with funds' forwarding
     */
    function rotateMinter(address payable receiver) external payable onlyMinter {
        require(receiver != address(0x0), 'MinterRole: RECEIVER_IS_EMPTY');

        _addMinter(receiver);
        renounceMinter();
        receiver.transfer(msg.value);
    }

    function _addMinter(address account) internal {
        _setupRole(MINTER_ROLE, account);
    }

    function _removeMinter(address account) internal {
        renounceRole(MINTER_ROLE, account);
    }
}

File 13 of 20 : IERC721MetadataUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721Upgradeable.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721MetadataUpgradeable is IERC721Upgradeable {

    /**
     * @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 14 of 20 : IRecordStorage.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

import './IRecordReader.sol';

interface IRecordStorage is IRecordReader {
    event Set(uint256 indexed tokenId, string indexed keyIndex, string indexed valueIndex, string key, string value);

    event NewKey(uint256 indexed tokenId, string indexed keyIndex, string key);

    event ResetRecords(uint256 indexed tokenId);

    /**
     * @dev Set record by key
     * @param key The key set the value of
     * @param value The value to set key to
     * @param tokenId ERC-721 token id to set
     */
    function set(
        string calldata key,
        string calldata value,
        uint256 tokenId
    ) external;

    /**
     * @dev Set records by keys
     * @param keys The keys set the values of
     * @param values Records values
     * @param tokenId ERC-721 token id of the domain
     */
    function setMany(
        string[] memory keys,
        string[] memory values,
        uint256 tokenId
    ) external;

    /**
     * @dev Set record by key hash
     * @param keyHash The key hash set the value of
     * @param value The value to set key to
     * @param tokenId ERC-721 token id to set
     */
    function setByHash(
        uint256 keyHash,
        string calldata value,
        uint256 tokenId
    ) external;

    /**
     * @dev Set records by key hashes
     * @param keyHashes The key hashes set the values of
     * @param values Records values
     * @param tokenId ERC-721 token id of the domain
     */
    function setManyByHash(
        uint256[] calldata keyHashes,
        string[] calldata values,
        uint256 tokenId
    ) external;

    /**
     * @dev Reset all domain records and set new ones
     * @param keys New record keys
     * @param values New record values
     * @param tokenId ERC-721 token id of the domain
     */
    function reconfigure(
        string[] memory keys,
        string[] memory values,
        uint256 tokenId
    ) external;

    /**
     * @dev Function to reset all existing records on a domain.
     * @param tokenId ERC-721 token id to set.
     */
    function reset(uint256 tokenId) external;
}

File 15 of 20 : IERC721Upgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165Upgradeable.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721Upgradeable is IERC165Upgradeable {
    /**
     * @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 16 of 20 : IERC165Upgradeable.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 IERC165Upgradeable {
    /**
     * @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 17 of 20 : IRecordReader.sol
// @author Unstoppable Domains, Inc.
// @date June 16th, 2021

pragma solidity ^0.8.0;

interface IRecordReader {
    /**
     * @dev Function to get record.
     * @param key The key to query the value of.
     * @param tokenId The token id to fetch.
     * @return The value string.
     */
    function get(string calldata key, uint256 tokenId) external view returns (string memory);

    /**
     * @dev Function to get multiple record.
     * @param keys The keys to query the value of.
     * @param tokenId The token id to fetch.
     * @return The values.
     */
    function getMany(string[] calldata keys, uint256 tokenId) external view returns (string[] memory);

    /**
     * @dev Function get value by provied key hash.
     * @param keyHash The key to query the value of.
     * @param tokenId The token id to set.
     */
    function getByHash(uint256 keyHash, uint256 tokenId) external view returns (string memory key, string memory value);

    /**
     * @dev Function get values by provied key hashes.
     * @param keyHashes The key to query the value of.
     * @param tokenId The token id to set.
     */
    function getManyByHash(uint256[] calldata keyHashes, uint256 tokenId)
        external
        view
        returns (string[] memory keys, string[] memory values);
}

File 18 of 20 : AccessControlUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControlUpgradeable {
    function hasRole(bytes32 role, address account) external view returns (bool);
    function getRoleAdmin(bytes32 role) external view returns (bytes32);
    function grantRole(bytes32 role, address account) external;
    function revokeRole(bytes32 role, address account) external;
    function renounceRole(bytes32 role, address account) external;
}

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal initializer {
        __Context_init_unchained();
        __ERC165_init_unchained();
        __AccessControl_init_unchained();
    }

    function __AccessControl_init_unchained() internal initializer {
    }
    struct RoleData {
        mapping (address => bool) members;
        bytes32 adminRole;
    }

    mapping (bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

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

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if(!hasRole(role, account)) {
            revert(string(abi.encodePacked(
                "AccessControl: account ",
                StringsUpgradeable.toHexString(uint160(account), 20),
                " is missing role ",
                StringsUpgradeable.toHexString(uint256(role), 32)
            )));
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        emit RoleAdminChanged(role, getRoleAdmin(role), adminRole);
        _roles[role].adminRole = adminRole;
    }

    function _grantRole(bytes32 role, address account) private {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
    uint256[49] private __gap;
}

File 19 of 20 : StringsUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant alphabet = "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] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

}

File 20 of 20 : ERC165Upgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal initializer {
        __ERC165_init_unchained();
    }

    function __ERC165_init_unchained() internal initializer {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }
    uint256[50] private __gap;
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

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payable","name":"receiver","type":"address"}],"name":"closeMinter","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"cnsMintingController","outputs":[{"internalType":"contract IMintingController","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"cnsResolver","outputs":[{"internalType":"contract IResolver","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"cnsURIPrefixController","outputs":[{"internalType":"contract IURIPrefixController","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IUNSRegistry","name":"unsRegistry_","type":"address"},{"internalType":"contract IMintingController","name":"cnsMintingController_","type":"address"},{"internalType":"contract IURIPrefixController","name":"cnsURIPrefixController_","type":"address"},{"internalType":"contract IResolver","name":"cnsResolver_","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"isMinter","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"}],"name":"mintSLD","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"},{"internalType":"string[]","name":"keys","type":"string[]"},{"internalType":"string[]","name":"values","type":"string[]"}],"name":"mintSLDWithRecords","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"relay","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"removeMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"}],"name":"removeMinters","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"receiver","type":"address"}],"name":"rotateMinter","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"}],"name":"safeMintSLD","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeMintSLD","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"},{"internalType":"string[]","name":"keys","type":"string[]"},{"internalType":"string[]","name":"values","type":"string[]"}],"name":"safeMintSLDWithRecords","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tld","type":"uint256"},{"internalType":"string","name":"label","type":"string"},{"internalType":"string[]","name":"keys","type":"string[]"},{"internalType":"string[]","name":"values","type":"string[]"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeMintSLDWithRecords","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"resolver","type":"address"}],"name":"setResolver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"prefix","type":"string"}],"name":"setTokenURIPrefix","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":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unsRegistry","outputs":[{"internalType":"contract IUNSRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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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.