// File: contracts/NfTz.sol




// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: ROYAL FREEquencies
/// @author: manifold.xyz

import "./ERC721Creator.sol";

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                                                                                                                                             //
//                                                                                                                                                                                                                                                             //
//                                                                                                                                                                                                                                                             //
//         ##### /##        # ###      /###           /         ##             ##### /               ##### ##         ##### /##       ##### ##         ##### ##                                                                                                //
//      ######  / ##      /  /###     /  ############/       /####          ######  /             ######  /### /   ######  / ##    ######  /### /   ######  /### /                                                              #                              //
//     /#   /  /  ##     /  /  ###   /     ##########       /  ###         /#   /  /             /#   /  /  ##/   /#   /  /  ##   /#   /  / ###/   /#   /  / ###/                                                              ###                             //
//    /    /  /   ##    /  ##   ###  #             /           /##        /    /  /             /    /  /    #   /    /  /   ##  /    /  /   ##   /    /  /   ##                                                                #                              //
//        /  /    /    /  ###    ###  ##          /           /  ##           /  /                  /  /             /  /    /       /  /             /  /                                                                                                     //
//       ## ##   /    ##   ##     ##             /            /  ##          ## ##                 ## ##            ## ##   /       ## ##            ## ##            /###    ##   ####        /##    ###  /###       /###    ###        /##       /###        //
//       ## ##  /     ##   ##     ##            /            /    ##         ## ##                 ## ##            ## ##  /        ## ##            ## ##           / ###  /  ##    ###  /   / ###    ###/ #### /   / ###  /  ###      / ###     / #### /     //
//       ## ###/      ##   ##     ##           /             /    ##         ## ##                 ## ######        ## ###/         ## ######        ## ######      /   ###/   ##     ###/   /   ###    ##   ###/   /   ###/    ##     /   ###   ##  ###/      //
//       ## ##  ###   ##   ##     ##          /             /      ##        ## ##                 ## #####         ## ##  ###      ## #####         ## #####      ##    ##    ##      ##   ##    ###   ##    ##   ##           ##    ##    ### ####           //
//       ## ##    ##  ##   ##     ##         /              /########        ## ##                 ## ##            ## ##    ##     ## ##            ## ##         ##    ##    ##      ##   ########    ##    ##   ##           ##    ########    ###          //
//       #  ##    ##   ##  ##     ##        /              /        ##       #  ##                 #  ##            #  ##    ##     #  ##            #  ##         ##    ##    ##      ##   #######     ##    ##   ##           ##    #######       ###        //
//          /     ##    ## #      /        /               #        ##          /                     #                /     ##        /                /          ##    ##    ##      ##   ##          ##    ##   ##           ##    ##              ###      //
//      /##/      ###    ###     /     /##/           /   /####      ##     /##/           /      /####            /##/      ###   /##/         /   /##/         / ##    ##    ##      /#   ####    /   ##    ##   ###     /    ##    ####    /  /###  ##      //
//     /  ####    ##      ######/     /  ############/   /   ####    ## /  /  ############/      /  #####         /  ####    ##   /  ##########/   /  ##########/   #######     ######/ ##   ######/    ###   ###   ######/     ### /  ######/  / #### /       //
//    /    ##     #         ###      /     ##########   /     ##      #/  /     #########       /    ###         /    ##     #   /     ######     /     ######       ######      #####   ##   #####      ###   ###   #####       ##/    #####      ###/        //
//    #                                                 #                 #                     #                #               #                #                      ##                                                                                    //
//     ##                                                ##                ##                    ##               ##              ##               ##                    ##                                                                                    //
//                                                                                                                                                                       ##                                                                                    //
//                                                                                                                                                                        ##                                                                                   //
//                                                                                                                                                                                                                                                             //
//      /                                                                                                                                                                                                                                                      //
//    #/                                                                                                                                                                                                                                                       //
//    ##                                                                                                                                                                                                                                                       //
//    ##                                                                                                                                                                                                                                                       //
//    ##                                                                                                                                                                                                                                                       //
//    ## /###    ##   ####                                                                                                                                                                                                                                     //
//    ##/ ###  /  ##    ###  /                                                                                                                                                                                                                                 //
//    ##   ###/   ##     ###/                                                                                                                                                                                                                                  //
//    ##    ##    ##      ##                                                                                                                                                                                                                                   //
//    ##    ##    ##      ##                                                                                                                                                                                                                                   //
//    ##    ##    ##      ##                                                                                                                                                                                                                                   //
//    ##    ##    ##      ##                                                                                                                                                                                                                                   //
//    ##    /#    ##      ##                                                                                                                                                                                                                                   //
//     ####/       #########                                                                                                                                                                                                                                   //
//      ###          #### ###                                                                                                                                                                                                                                  //
//                         ###                                                                                                                                                                                                                                 //
//                  #####   ###                                                                                                                                                                                                                                //
//                /#######  /#                                                                                                                                                                                                                                 //
//               /      ###/                                                                                                                                                                                                                                   //
//                                                                                                                                                                                                                                                             //
//                   #####    ##                    ##### #     ##       /##     /###           /       # ###                       ##### ##                                                                                                                   //
//                ######  /  #### /              ######  /#    #### /  #/ ###   /  ############/      /  /###  /                 /#####  /##                                                                                                                   //
//        #      /#   /  /   ####/              /#   /  / ##    ###/  ##   ### /     #########       /  /  ###/                //    /  / ###                                                                                                                  //
//       ##     /    /  /    # #               /    /  /  ##    # #   ##       #     /  #           /  ##   ##                /     /  /   ###                                                                                                                 //
//       ##         /  /     #                     /  /    ##   #     ##        ##  /  ##          /  ###                          /  /     ###                                                                                                                //
//     ########    ## ##     #         /###       ## ##    ##   #     ######       /  ###         ##   ##             /###        ## ##      ##   ######                                                                                                       //
//    ########     ## ##     #        / ###  /    ## ##     ##  #     #####       ##   ##         ##   ##   ###      / ###  /     ## ##      ##  /#######                                                                                                      //
//       ##        ## ########       /   ###/     ## ##     ##  #     ##          ##   ##         ##   ##  /###  /  /   ###/      ## ##      ## /      ##                                                                                                      //
//       ##        ## ##     #      ##    ##      ## ##      ## #     ##          ##   ##         ##   ## /  ###/  ##    ##       ## ##      ##        /                                                                                                       //
//       ##        ## ##     ##     ##    ##      ## ##      ## #     ##          ##   ##         ##   ##/    ##   ##    ##       ## ##      ##       /                                                                                                        //
//       ##        #  ##     ##     ##    ##      #  ##       ###     ##           ##  ##          ##  ##     #    ##    ##       #  ##      ##      ###                                                                                                       //
//       ##           /       ##    ##    ##         /        ###     ##            ## #      /     ## #      /    ##    ##          /       /        ###                                                                                                      //
//       ##       /##/        ##    ##    /#     /##/          ##     ##             ###     /       ###     /     ##    ##     /###/       /          ###                                                                                                     //
//       ##      /  #####      ##    ####/ ##   /  #####              ##              ######/         ######/       ######     /   ########/            ##                                                                                                     //
//        ##    /     ##              ###   ## /     ##                ##               ###             ###          ####     /       ####              ##                                                                                                     //
//              #                              #                                                                              #                         /                                                                                                      //
//               ##                             ##                                                                             ##                      /                                                                                                       //
//                                                                                                                                                    /                                                                                                        //
//                                                                                                                                                   /                                                                                                         //
//                                                                                                                                                                                                                                                             //
//                                                                                                                                                                                                                                                             //
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract NfTz is ERC721Creator {
    constructor() ERC721Creator("ROYAL FREEquencies", "NfTz") {}
}

// File: contracts/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 = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
        Address.functionDelegateCall(
            0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
            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: @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: @openzeppelin/contracts/utils/Address.sol



// 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);
            }
        }
    }
}

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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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) {
        assembly {
            r.slot := slot
        }
    }

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

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

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