ETH Price: $3,440.61 (-0.50%)
Gas: 16 Gwei

Contract

0xf2aa39676E30b76bb8A9fF01274758393C81fe52
 

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0x60806040160832652022-11-30 14:01:23596 days ago1669816883IN
 Create: ClaimedUpgradable
0 ETH0.01696211.73329679

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Contract Name:
ClaimedUpgradable

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 1 runs

Other Settings:
default evmVersion
File 1 of 10 : ClaimedUpgradable.sol
// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./IERC721.sol";
import "./ReentrancyGuardUpgradable.sol";
import "./HasRegistration.sol";

contract ClaimedUpgradable is ReentrancyGuardUpgradable, HasRegistration {
    
    bool canClaim;
    mapping(address => bytes32) LegacyClaims;
    mapping(address => bytes32) LegacyClaimsBy;
    mapping(address => mapping(uint => address)) Claims;
    mapping(address => uint256[]) ClaimsFor;
    address[] BurnAddresses;
    
    function initialize() public initializer {
        __Ownable_init();
        ReentrancyGuardUpgradable.init();
        canClaim = true;
        BurnAddresses.push(address(0));
        BurnAddresses.push(0x5D152dd902CC9198B97E5b6Cf5fc23a8e4330180);
    }

    function version() public pure returns (uint256) {
        return 3;
    }
    
    function isBurnAddress(address needle) public view returns (bool) {
        address[] memory burnAddresses = getBurnAddresses();
        for (uint i=0; i < burnAddresses.length; i++) {
            if (burnAddresses[i] == needle) {
                return true;
            }
        }
        return false;
    }

    function toggleCanClaim() public onlyOwner {
        canClaim = !canClaim;
    }
    
    function claim(address nftAddress, uint tokenId, address _claimedBy) public nonReentrant isRegisteredContract(_msgSender()) {        
        if (canClaim) {
            addToClaims(nftAddress, tokenId, _claimedBy);
        } else { 
            revert("Claiming is turned off");
        }
    }
    
    function isClaimed(address nftAddress, uint tokenId, bytes32[] calldata proof ) public view returns(bool) {
        bytes32 _hash = keccak256(abi.encodePacked(tokenId));
        IERC721 token = IERC721(nftAddress);        
        if (proof.length == 0) {
            bool claimed = getClaims(nftAddress, tokenId) != address(0);
            bool addressClaimed = false;
            try token.ownerOf(tokenId) returns (address _owner) {
                if (isBurnAddress(_owner)) {
                    addressClaimed = true;
                }
            } catch {}
            return addressClaimed || claimed;
        } else {
            bytes32 root = getLegacyClaims(nftAddress);
            return verifyScript(root, _hash, proof);
        }
    }

    function getClaimsFor(address _owner) public view returns (uint256[] memory) {
        return ClaimsFor[_owner];
    }

    function getLegacyClaims(address nftAddress) public view returns(bytes32) {
        return LegacyClaims[nftAddress];
    }
    
    function claimedBy(address nftAddress, uint tokenId) public view returns (address _owner, string memory _type) {
        address claimed = getClaims(nftAddress, tokenId);
        if (claimed != address(0)) {
            return (claimed, "record");
        } else {
            return (address(0), "unknown");
        }
    }

    function legacyClaimedBy(address nftAddress, address claimant, uint tokenId, bytes32[] calldata proof) public view returns (address _owner, string memory _type) {
        bytes32 root = getLegacyClaimsBy(nftAddress);
        bytes32 _hash = keccak256(abi.encodePacked(claimant, tokenId));
        require(verifyScript(root, _hash, proof), "invalid proof");
        return (claimant, 'legacy');
    }

    function addLegacy(address nftAddress, bytes32 root) onlyOwner public {
        LegacyClaims[nftAddress] = root;      
    }

    function addLegacyClaimedBy(address nftAddress, bytes32 root) onlyOwner public {
        LegacyClaimsBy[nftAddress] = root;
    }

    function getBurnAddresses() internal view returns (address[] memory){
        return BurnAddresses;
    }

    function getLegacyClaimsBy(address nftAddress) internal view returns(bytes32) {
        return LegacyClaimsBy[nftAddress];
    }
    
    function getClaims(address nftAddress, uint tokenId) internal view returns (address) {
        return Claims[nftAddress][tokenId];
    }
    
    function addToBurnAddresses(address burnAddress) internal onlyOwner {
         BurnAddresses.push(burnAddress);
    }
    
    function addToClaims(address nftAddress, uint tokenId, address _owner) internal {
        Claims[nftAddress][tokenId] = _owner;
        ClaimsFor[_owner].push(tokenId);
    }

    function verifyScript(bytes32 root, bytes32 _hash, bytes32[] calldata proof) public pure returns (bool) {
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (_hash <= proofElement) {
                _hash = optihash(_hash, proofElement);
            } else {
                _hash = optihash(proofElement, _hash);
            }
        }
        return _hash == root;
    }
    // memory optimization from: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3039
    function optihash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        assembly {
        mstore(0x00, a)
        mstore(0x20, b)
        value := keccak256(0x00, 0x40)
        }
    }

}

File 2 of 10 : IERC721.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
interface IERC721 {
    function burn(uint256 tokenId) external;
    function transferFrom(address from, address to, uint256 tokenId) external;
    function mint( address _to, uint256 _tokenId, string calldata _uri, string calldata _payload) external;
    function changeName(string calldata name, string calldata symbol) external;
    function updateTokenUri(uint256 _tokenId,string memory _uri) external;
    function tokenPayload(uint256 _tokenId) external view returns (string memory);
    function ownerOf(uint256 _tokenId) external view returns (address _owner);
    function getApproved(uint256 _tokenId) external returns (address);
    function safeTransferFrom(address _from, address _to, uint256 _tokenId) external;
    function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes calldata data) external;
    function totalSupply() external view returns (uint256);
    function tokenOfOwnerByIndex(address _owner, uint256 _index) external view returns (uint256);
    function tokenByIndex(uint256 _index) external view returns (uint256);
    function balanceOf(address account, uint256 id) external view returns (uint256);
    function isApprovedForAll(address _owner, address _operator) external view returns (bool);
    function setApprovalForAll( address _operator, bool _approved) external;

}

/**
 * @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 3 of 10 : ReentrancyGuardUpgradable.sol
// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
contract ReentrancyGuardUpgradable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

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

    uint256 private _status;

    function init() internal {
         _NOT_ENTERED = 1;
         _ENTERED = 2;
        _status = _NOT_ENTERED;
    }

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

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

        _;

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

File 4 of 10 : HasRegistration.sol
// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./IsBypassable.sol";

contract HasRegistration is IsBypassable {

    mapping(address => uint256) public registeredContracts; // 0 EMPTY, 1 ERC1155, 2 ERC721, 3 HANDLER, 4 ERC20, 5 BALANCE, 6 CLAIM, 7 UNKNOWN, 8 FACTORY, 9 STAKING, 10 BYPASS
    mapping(uint256 => address[]) internal registeredOfType;

    modifier isRegisteredContract(address _contract) {
        require(registeredContracts[_contract] > 0, "Contract is not registered");
        _;
    }

    modifier isRegisteredContractOrOwner(address _contract) {
        require(registeredContracts[_contract] > 0 || owner() == _msgSender(), "Contract is not registered nor Owner");
        _;
    }

    function registerContract(address _contract, uint _type) public isRegisteredContractOrOwner(_msgSender()) {
        registeredContracts[_contract] = _type;
        registeredOfType[_type].push(_contract);
    }

    function unregisterContract(address _contract, uint256 index) public onlyOwner isRegisteredContract(_contract) {
        address[] storage arr = registeredOfType[registeredContracts[_contract]];
        arr[index] = arr[arr.length - 1];
        arr.pop();
        delete registeredContracts[_contract];
    }

    function isRegistered(address _contract, uint256 _type) public view returns (bool) {
        return registeredContracts[_contract] == _type;
    }

    function getAllRegisteredContractsOfType(uint256 _type) public view returns (address[] memory) {
        return registeredOfType[_type];
    }
}

File 5 of 10 : IsBypassable.sol
// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;

import "./IsClaimable.sol";

abstract contract IsBypassable is IsClaimable {

    bool byPassable;
    mapping(address => mapping(bytes4 => bool)) byPassableFunction;
    mapping(address => mapping(uint256 => bool)) byPassableIds;

    modifier onlyOwner virtual override {
        bool _canBypass = byPassable && byPassableFunction[_msgSender()][msg.sig];
        require(owner() == _msgSender() || _canBypass, "Not owner or able to bypass");
            _;
    }

    modifier onlyOwnerOrBypassWithId(uint256 id) {
        require (owner() == _msgSender() || (id != 0 && byPassableIds[_msgSender()][id] ), "Invalid id");
            _;
    }

    function canBypass() internal view returns(bool) {
        return (byPassable && byPassableFunction[_msgSender()][msg.sig]);
    }

    function canBypassForTokenId(uint256 id) internal view returns(bool) {
        return (byPassable && canBypass() && byPassableIds[_msgSender()][id]);
    }

    function toggleBypassability() public onlyOwner {
      byPassable = !byPassable;
    }

    function addBypassRule(address who, bytes4 functionSig, uint256 id) public onlyOwner {
        byPassableFunction[who][functionSig] = true;
        if (id != 0) {
            byPassableIds[who][id] = true;
        }        
    }

    function removeBypassRule(address who, bytes4 functionSig, uint256 id) public onlyOwner {
        byPassableFunction[who][functionSig] = false;
        if (id !=0) {
            byPassableIds[who][id] = true;
        }
    }
}

File 6 of 10 : IsClaimable.sol
// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./OwnableUpgradeable.sol";
abstract contract IsClaimable is OwnableUpgradeable {

    bool public isClaimable;

    function toggleClaimable() public onlyOwner {
        isClaimable = !isClaimable;
    }
   
}

File 7 of 10 : OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/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 onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

File 8 of 10 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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 onlyInitializing {
    }

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

File 9 of 10 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @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 proxied contracts do not make use of 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.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * 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.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

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

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}

File 10 of 10 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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 Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 1
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","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"},{"inputs":[{"internalType":"address","name":"who","type":"address"},{"internalType":"bytes4","name":"functionSig","type":"bytes4"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"addBypassRule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"addLegacy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"addLegacyClaimedBy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"_claimedBy","type":"address"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"claimedBy","outputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"string","name":"_type","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_type","type":"uint256"}],"name":"getAllRegisteredContractsOfType","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"getClaimsFor","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"}],"name":"getLegacyClaims","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"needle","type":"address"}],"name":"isBurnAddress","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isClaimable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"isClaimed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"},{"internalType":"uint256","name":"_type","type":"uint256"}],"name":"isRegistered","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nftAddress","type":"address"},{"internalType":"address","name":"claimant","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"legacyClaimedBy","outputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"string","name":"_type","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"},{"internalType":"uint256","name":"_type","type":"uint256"}],"name":"registerContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"registeredContracts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"who","type":"address"},{"internalType":"bytes4","name":"functionSig","type":"bytes4"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"removeBypassRule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleBypassability","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleCanClaim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleClaimable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"unregisterContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"root","type":"bytes32"},{"internalType":"bytes32","name":"_hash","type":"bytes32"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"verifyScript","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","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.