Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

abstract contract IERC721 {
    function mint(address to, uint quantity) external virtual;

    function ownerOf(uint tokenId) external view virtual returns (address);
}

contract MinterVerify is Ownable, EIP712 {
    using SafeERC20 for IERC20;
    IERC721 public erc721;
    IERC20 public stableToken;
    bytes32 public constant MINTER_TYPEHASH = keccak256("Mint(address to,uint256 quantity,uint256 nonce)");

    address public signerAddress;
    address public feeCollectorAddress;
    uint public price;
    bool public publicMint;
    mapping(bytes32 => bool) public signatureUsed;
    modifier requiresSignature(
        bytes calldata signature,
        uint quantity,
        uint nonce
    ) {
        // Verify EIP-712 signature by recreating the data structure
        // that we signed on the client side, and then using that to recover
        // the address that signed the signature for this data.
        bytes32 structHash = keccak256(abi.encode(MINTER_TYPEHASH, msg.sender, quantity, nonce));
        bytes32 digest = _hashTypedDataV4(structHash); /*Calculate EIP712 digest*/
        require(!signatureUsed[digest], "signature used");
        signatureUsed[digest] = true;
        // Use the recover method to see what address was used to create
        // the signature on this data.
        // Note that if the digest doesn't exactly match what was signed we'll
        // get a random recovered address.
        address recoveredAddress = ECDSA.recover(digest, signature);
        require(signerAddress == recoveredAddress, "Invalid Signature");
        _;
    }

    constructor(IERC721 _erc721, IERC20 _stableToken, address _signer, uint _price, address _feeCollector) EIP712("UFC277Minter", "1") {
        erc721 = _erc721;
        stableToken = _stableToken;
        signerAddress = _signer;
        price = _price;
        feeCollectorAddress = _feeCollector;
    }

    function setNFT(IERC721 erc721_) public onlyOwner {
        erc721 = erc721_;
    }

    function setPublicMint(bool onOrOff) public onlyOwner {
        publicMint = onOrOff;
    }

    function setSignerAddress(address _newSigner) public onlyOwner {
        signerAddress = _newSigner;
    }

    function mintPublic(uint _quantity) public {
        require(publicMint, "Public mint is not active");
        stableToken.safeTransferFrom(msg.sender, feeCollectorAddress, price * _quantity);
        erc721.mint(msg.sender, _quantity);
    }

    function mint(uint _quantity, uint _nonce, bytes calldata _signature) public requiresSignature(_signature, _quantity, _nonce) {
        stableToken.safeTransferFrom(msg.sender, feeCollectorAddress, price * _quantity);
        erc721.mint(msg.sender, _quantity);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @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 ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. 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.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // 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) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @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) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // 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 (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): 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.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @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) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @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 Message, created from `s`. 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(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @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));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)

pragma solidity ^0.8.0;

import "./ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 30000
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC721","name":"_erc721","type":"address"},{"internalType":"contract IERC20","name":"_stableToken","type":"address"},{"internalType":"address","name":"_signer","type":"address"},{"internalType":"uint256","name":"_price","type":"uint256"},{"internalType":"address","name":"_feeCollector","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"MINTER_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"erc721","outputs":[{"internalType":"contract IERC721","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeCollectorAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_quantity","type":"uint256"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_quantity","type":"uint256"}],"name":"mintPublic","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"publicMint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC721","name":"erc721_","type":"address"}],"name":"setNFT","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"onOrOff","type":"bool"}],"name":"setPublicMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newSigner","type":"address"}],"name":"setSignerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"signatureUsed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"signerAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stableToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000004a36d43c7ae70c53aea143ef773d0b2e8aca8b90000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000a3041d0c4c99349ae2f5f8c7b2bc4744966e69b5000000000000000000000000000000000000000000000030ca024f987b900000000000000000000000000000f0638096047ef0183d0f3232e82205b118e100dd

-----Decoded View---------------
Arg [0] : _erc721 (address): 0x4a36d43c7aE70c53aeA143ef773d0b2E8aCa8b90
Arg [1] : _stableToken (address): 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
Arg [2] : _signer (address): 0xa3041d0c4C99349AE2f5F8c7b2BC4744966e69b5
Arg [3] : _price (uint256): 900000000000000000000
Arg [4] : _feeCollector (address): 0xf0638096047EF0183d0f3232e82205b118E100DD

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000004a36d43c7ae70c53aea143ef773d0b2e8aca8b90
Arg [1] : 000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
Arg [2] : 000000000000000000000000a3041d0c4c99349ae2f5f8c7b2bc4744966e69b5
Arg [3] : 000000000000000000000000000000000000000000000030ca024f987b900000
Arg [4] : 000000000000000000000000f0638096047ef0183d0f3232e82205b118e100dd