// File: contracts/BBP.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: Bigeggs Black Pen
/// @author: manifold.xyz

import "./manifold/ERC721Creator.sol";

////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                            //
//                                                                                                            //
//             .~77~.                                                                  ^P@@@@@@@@@@@@@@@@@    //
//           :!7~:                   .:~?YPGGGGBPYJ7^                                   .Y@@@@@@@@@@@@@@@@    //
//        :~!~:                   :?PB&@@@@@@@@@@@@@&B?.                                  7&@@@@@@@@@@@@@@    //
//      :!7^                    !P&@@@@@@@@@@@@@@@@@@@@#J.                                 !&@@@@@@@@@@@@@    //
//    ^~~.                    :G@@@@@@@@@@@@@@@@@@@@@@@@@G^                                 !&@@@@@@@@@@@@    //
//    ~.                     ^#@@@@@@@@@@@@@@@@@@@@@@@@@@@#~                                 J@@@@@@@@@@@@    //
//                           P@@@@@@@@&&&&&@@@@@@@@@@@@@@@@B.                                :B@@@@@@@@@@@    //
//                          ^&@&@@@@&GPGGBP#&&@@@@@@@&PB@##&J           ~~7?!!^:        ....  7@@@@@@@@@@@    //
//                          ^&@@@@#P#BGB##B##G5P#&&&#B#BBB#PBJ7~!!7.  :5G###BGGP?~.           :#@@@@@@@@@@    //
//                          .B@@&#?P#B##@&&B#&&B&&BBB####&&&#&&##&#Y?75B5BGBBB##BBY:          .5@@@@@@@@@@    //
//                           ?@@@&P##GB&&@&&###BBGGGPPBGYBGPP#&BB&@&#&GY5G&&&#&@##5            ?@@@@@@@@@@    //
//                           .5@@&5B##G&&BG5J7!7!?JJJ5PG?YJJ7Y55YPPYPGBBYYG##&&&&&?.         . !&@@@@@@@@@    //
//                            .?&@#&&#BBP!~..^^^^~^:.:?Y77~.^:^!^!~!77YY5YYBBBB#&7           . 7@@@@@@@@@@    //
//                             .^5#&BY77~. .:!??!?7^  :. ^::^^7JJY!7J~7!7PYY5P#@#7:            Y@@@@@@@@@@    //
//                               ^B#PJ^:::^~JY5GPGBG?.  .^:JB###B#BPJ!^7!J55YP#&&&?.      ^.  .B@@@@@@@@@@    //
//                             ^YBG5?^..:755##&&#&@@#~.:??G@&@@&&&&@#5!?7?5YJ5G###P!^:^!~?5J: 7&@&@@@@@@@@    //
//                          ..~YBGJ7:.:~!####B@??&@&&BPPYJ&&&&&@Y7#&&#PYY??YY55###BG7!~5G5PG7!BGG5G&@B&@@@    //
//                         .:~?#GY^~^.^JG&&&BGGBB##BB##BBGBGB#&&&&#&##BG75YJYYGPBB##57!5G5YY7Y5JJJ!PG?&@@@    //
//                           :5G!:~~..^7BGBGJ77?~J@#PP#@&#&&#~?YJ5G##&#BY75J?5PGGG###Y?YBYJ!7?7?J~:!77PBB#    //
//    !!!!~^^::...          .!BP::^ :!^!?~~:.^:  .?Y77&BBGGG7:~!~^^~?J5G??75?55PB&#B#BPPGY5YJ?J5?!~~ .?Y7?    //
//    ~~~~^^^::::^~~.       .Y#7~J!:??!?77!7.  :..:.:!B5~^.: :^^~^: :.~7!!77?55G####@GJGG5??YJG55JY^^5J^7?    //
//        ..::^~^^^757^^:. .^GY^!7~!YYYGBBP#P~::^^~~7?GJ^...^^:..:::^!~!~!^?JYJP5BG&@#B#GG5Y5#5?J5!JPJ~!7J    //
//    .::::.    :~7J5G&&BPYY55YJ?JJ?PPY5GB&##BPJ!~7JPBBGJ!: ::!~:.:7????!!!?JP5P5BB#GB#BB##GJYY??~777J7!77    //
//    ^^~!?Y5Y?J??Y55GY7~:^JBB5???~JJ!J~7?5?YY?5Y!7?J555GGJ!?YPGYJY5Y?7!!?JJ?JJJPG#GGB&&GGG##PPJ7J55Y?!777    //
//    7JPBB?^::~7????~ .~!5BPPJ7?YJ!.:! . :. ...::~!??~^^.^7?JY?~^.^^7?~77755YBPG5B#GG##BB?P&&@G5GPJYP?7Y5    //
//    YJ~77 .~!~^:^~. ?P!~J5Y5??7J?7!!!Y?:7!!~~7PGJYJ??J!!~::7!^~:::?J7Y!!YPJYGPGG5###GG#&GG###&Y7JP5YP5GY    //
//     .~~.^7^.:^^:  !&!7JJGG5JJ??Y77?~5G??!!G5PG5GYGPG!P#GJJ?YY555JPPP5J?G5YPBGGBGGPP#BBPBGBG#&G5YP555YPP    //
//    ^~.:7!~~~:.    J&GG5G#PG??!J?7!~!PB&BGYB75BG#BGGYJ#&&GY#GPB#BG&&J~?5JBP5PGB##&BG#&BPGBBGBPB#YPG5YYYJ    //
//    ..7J~::     . 7PYP7YPB#P5JYJ^~7JJJYBBPPPYJGP5GGGYBP#GGBP5B#GP##G5?PGGPGBBGB&###&#GP##&BGB#B#GJPYG5PG    //
//     !!  .:^!!!?!?#!:~!BG#&PG5?J!:7?YGGB#PBGGGYPP5PBBPBYP#BB#BBBGBPJ5?5BPY#BY#5#B#&5JJ5###&BPP7~7J55PJP&    //
//    :.:7JJJ5PGJG5PB7~^7B&&BBBYG5J?J~J5#BBBG#BG#5#GG&BBBJ#BB##GGGGPGPPYJGGG##Y&##&@&555B&@PJP~!!75GYJYB#P    //
//    ?YBGPYJ??JJP#G~.  ~5&B#&GPB&GJG7YGGBBGBPBBBPGG##BG55&#B&###PP#JYGJ5GGP&&B&#BBGYYGB#5YJ~?~7?5?!J5#P7J    //
//    GBP?PP?Y?7JYB5   .~JGGBB##PBBJB5YP55GBBBBG#BGP&PBG5#&@&&B5&G##7PG5##BG#&B&#5PGGBPJ!57555GJPPY^PY!7P~    //
//    GYYJ?J7~JYYPPJ:7Y?YPGBGG#&BPBBGG?5GYPGB#BB##5YGG##B@&&BBB7#YGBJP#5#@###@G#GGB&BB^P55PBG5PYYYG!7J?PJ?    //
//    B5YJGJ7?B?JP77#5~^^~B##B#&#PBBGB?5B55Y5#&B#@5BP&#B&&BGGG#?B5#GY5&BP&@#BBGBB##Y^G575P5PGJ!!J!PYJY~~??    //
//    P??7P55?JJ??JY5:  .:Y##@&@##&##&PP#BGP5#5YG&G&GB##&G5BPGBG#G&G5G&#&#PYYYP5PGY7J7JGBY55YJJYP5~:??7YJ?    //
//    G7J?^JYYJ!~?5P7^~^^^YB#BBB#&&###BBG#B#PB?JG&BGP#&@&P5BB#G&BB#BGB&##5?YBG5BG7YPYG#&Y?PYB#P^:BB5Y5?!JP    //
//    BY?7JGBPB7?575Y7~!~?P!^:!YJJ#&BG##BB##G#B5PBPBBB&&&B#&&B#BJ!!?YJJ5GJ5GB#BP!7BGG&GB#PY7Y5J!JGBB5BGP#?    //
//    57JPB7?G?PY!^5??PJY5^ :~~~7J55G55?7??5B#5B#PGB5P&&&###&&G~~!~!77YYJPPG#&P5?J5YPGG#G?~7^PBGGGPY7??JJY    //
//    GP?JP!~~^GB^7?5J55B5 ?J??7?JP?~~^.:!?JG#!7G#P5P#BYY?7JG@G^5JYYYJBB7P###GPP?J5JJ?BBP?^7?P#BYGJ~5JJP~~    //
//    &G?P~ :JP5JPYPPYJJJG7!555J!7G^ ^!75YPG##BPPB#&#&YY?!5PJ5B?GPGGGBG5?#&GYP?5P5J:!Y7B57!GY75##P?YPJPP5P    //
//    #BYB!. .:::JG5G#BBP?GG5JJ?J5BY.?YG#G##&?!BGGG###P?5Y5BG?GB5Y55GP??B@&5!5GBPGGJ7Y7BBP?!J&GYJ!:?B###B?    //
//                                                                                                            //
//                                                                                                            //
//    Bigeggs Black Pen                                                                                       //
//                                                                                                            //
//                                                                                                            //
////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract BBP is ERC721Creator {
    constructor() ERC721Creator("Bigeggs Black Pen", "BBP") {}
}

// File: contracts/manifold/ERC721Creator.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1;
        Address.functionDelegateCall(
            0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1,
            abi.encodeWithSignature("initialize(string,string)", name, symbol)
        );
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

// File: node_modules/@openzeppelin/contracts/proxy/Proxy.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// File: node_modules/@openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or 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 {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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);
        }
    }
}

// File: node_modules/@openzeppelin/contracts/utils/StorageSlot.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}