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Token

 

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Max Total Supply

117

Holders

66

Market

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N/A

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0x4a8B9E2C2940fdd39aceb384654dc59aCB58C337
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Contract Source Code Verified (Exact Match)

Contract Name:
L000

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 300 runs

Other Settings:
default evmVersion
File 1 of 5 : L000.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: LVL000 GENESIS001
/// @author: manifold.xyz

import "./ERC1155Creator.sol";

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                                                                                                                       //
//                                                                                                                                                                                       //
//    *=======================================**#%*======%=+=+=%=*#====%===================#+=#===========+========++==========================%%======+*#=============**===========*    //
//    =                       =.   .-=         -+=     :#  . - = -+   - -                  +  + :+     : :: :      =       .:                 -%%     ::=+             :*           =    //
//    =          +.           :+.  =%          +:=%     %  .=# = -+ +.  +                  + .%:==    ++ :  :.     #   .:. #-                - #%: :  ---+            . .=          =    //
//    =  #: :-    -       : :.*#- -*%          =-.*   - #  .:%.= :+ -#   :                 + -##:      .. .  =    .%   :.:.--               .  =%% .  .=..             + *:         =    //
//    =  #:.%%    .:   = :+*%*%:%= =*          +-+.   * %  .+*+= .+:+%#                    + =+:=      .. . .-  +.#%  *:+==--..:            :   %%#    =             ==-.:+         =    //
//    = .:.*-%     -   *:  %#**:-#-=.=%%#*=     -#=+  * %  . :#=  +:.:%   :                + =-:  ::#  #*  .==-+ .%%  : :.%-*--#-.          :   %%-    =             == + +.        =    //
//    =# **#+%     =   .-  #  %:-@@@%-          #=-@@@@.%  . ++=  = **%#   .     -@%..     ++==*-##         = .  .%%  #:..+-=%  .           :   %#     =             :- :. .        =    //
//    + +:.#%%     =  :.*     %:-@@@@@.         +%.+@@@@%  .  -=  : .. %   *     @@@@@@@   +-= *%       :- =  =  :%%%%%%%%+@@=% %+  @:      :   %%     =             --  *  .       =    //
//    = : *%          .:*     ::-@@@@*.*         #=*@@@@%  .  ==     #% %   -   +@@@@@%#++%==:-%%%%%%%%%%+ =  -  .%% .+.  @@@@@%    @@@@@+  :   %%   . =             ==  :  .       =    //
//    =  *:  :%        :*   #*  -@@@@* *:         =@@@@@#       =    . %#.  +  =@@@@@@@@@@@@@@@            =  : ..%%#..: =@@@@@--%  @@@@@   : .:%%   - -             -=   *  -      =    //
//    =  : *%-#        :*   ##*+%@@@@###+##**+-. .=@@@@@%  . -* =#-#  ##=%   - @@@@@@@@@@@@@@@@@+        :--  = ..%%#    +@@@@@.#   @@@@@  *#   %%%%%%..             :=   #* .      =    //
//    +   :+ : *.      =*     #.=@@@@#+=::........==@@@@%  .   +-=    . :#.  =@@@@@@@@@@@@@@@@@@@#       ==.  + ..%%::   @@@@@%.    @@@@@  :. ..%%.                  :=   *  :      =    //
//    =:   #*.#:*      **  =  .:+@@@@# # :*       -%@@@@#      *.-     +**#  @@@@@@@@@@@@@@@@@@@@#       ..   + ..% *   +@@@@@-     @@@@@     . %%                   .-  :  * %     =    //
//    =.=     #+:+     **  = - :%@@@@# .::=+       *@@@@#      #=.     %:-*:%@@@@@@@@@@@@@@@@@@@%         -= .+ ..=:    %@@@@@*+    @@@@@     . %%                    .:-. :*=      =    //
//    = :   - =..+:    **  -+  =*@@@@# = : ++      %@@@@#      = -.     .=#@@@@@@@:     * #@@@@@:         -  :+ .-%*    @@@@@#=.    @@@@@   + . %%*---  .---::..              %=    =    //
//    =  -     ++ +    .*  -.#**=@@@@%-   - =.     -@@@@#      = +.:    --@@@@@@@-      .:@@@@@#          :  -+ .=#%   #@@@@@--:=   @@@@@  -  . %% =                          -=    =    //
//    =  .-   =-.::=    *  %%%%@@@@@@@@%%% = *.    -@@@@#      - - -  * :@@@@@@@#----+-%-%@@@@@----------. = -+ ..%%   @@@@@%:.-    @@@@@ :-  . %% #.                        = #.   =    //
//    =   .   =.#-.+:   *  @@@@@@@@@@@@@@@  =.=.   -@@@@#  .   -: :.  %=@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@-   -+ .%%%  #@@@@@* ** -  @@@@@ +   . %% %*=. ::   .::--===#: -=+=    =   =    //
//    =    *  -+==- *   #  @@@@@@@@@@@@@@@ ==+#%===*@@@@%==*===**:--= @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@- . :  ..%%  @@@@@%: ..=.  @@@@@=: .   %%@@@%- +            : .: :     +   =    //
//    =    -:   -*..-*  *  @@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@@@@@@@@++-.. #@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@- : .- . *% #@@@@@%=  -# - @@@@@=  .   @@@@@@- =-----------=  *--*-----#=. =    //
//    =    --     =. -: %  @@@@@@@@@@@@@@@%@@@@@@@@@@@@@@@@@@@@@@*-*+*  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@- - --   .% @@@@@@@%    #= @@@@@   .  -@@@@@@@  +**********   #**%****+-:  =    //
//    =    =#    -. : #:%  %%%%@%@@@@@%%%# @@@@@@@@@@@@@@@@@@@@@@*=#..   @@@@@@@  : :  @@@@@==%     @@@@@- =  :    %@@@@@@@@+   .: :@@@@@   : -@@@@@@@@+.         .: ==.  *      %  =    //
//    =   :.:    **:- -.%      +-@@@@@##   @@@@@@@@@@@@@@@@@@@@@@*+: **  # @@@@@   *-  @@@@@=-#     @@@@@-+        %@@@@@@@@+   + %+@@@@@   :%@@@@@@@@@:.        .. - =  :       .  =    //
//    =   =.:   #: -==% %      --@@@@@ +   @@@@@@@@@@@@@@@@@@@@@@*+:%.     @@@@@=  :  .@@@@@=.*     @@@@@-#= :     @@@@@@@@@+     ..@@@@@   @@@@@@@@@=           :  - =  :       *: =    //
//    =  %  %  +. -==%  *  :    *@@@@@ .+  @@@@- = -@@@@%  + @@@@*+ # %%   @@@@@#   # =@@@@@= +     @@@@@= = -   =.@@@@@@@@@+    %=#@@@@@ =@@@@@@@@@%   :+      #  :  =  *          =    //
//    = #  #  .-*: -%+  %  -    %@@@@@  #% @@@@-  =-@@@@%  . @@@@*+ % .    @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@- = -  -%@@@@@@@@@@+       @@@@@%@@@@@@@@@  :   %     #  =   = :         % =    //
//    =-  .-  %* : %.   %  *    -@@@@@ * %:@@@@*   *@@@@.    @@@@*+::- ##=.@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@- - -  #@@@@@@@@@@@+     #+@@@@@@@@@@@@@*   :   %-      *    = -         # =    //
//    #   *- -=  :%=--  %  #    -@@@@@*  *.@@@@%-  -@@@@#.  .@@@@*+*-  ..#*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@-+= -  %@@@@@@@@@@@+       @@@@@@@@@@@@%.    .  -.  .. -     + +         - =    //
//    =  :.=#*#  % %-.  %  %#   -@@@@@.**#.@@@@-=: -@@@@%  + @@@@**- .  :=.@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@=-= -  @@@@@@@@@@@@+      *@@@@@@@@@@*-%.    .   ++ =  :     *-          +-=    //
//    =  * # #%  :=- =..%  %*   -@@@@@@%@@ @@@@- * -@@@@ ++  @@@@*:* .  ::*%===*=#@@@@@@@@@@@@@%======#+=% - -  %@@@@@ @@@@@+       @@@@@@@@@: *%.    :   :-+  :      #+          --=    //
//    = -.-# %%  :+  ..+#  %+%. -@@@@@@@@@ @@@@- .#-@@@@ +   @@@@# * -+  .-.:  --%@@@@@@@@-@@@@#      * @# - -  %@@@@= @@@@@+       @@@@@@@-:  %%:    :    *  +       #             =    //
//    = *.:. %#  *:   :=*  +*.+*%@@@@@@@@@ @@@@-  :*@@@@-.%  @@@@@ * =% %-:=- *@@@@@@@@@=. @@@@@     -:@@@#: -  #*@@@  @@@@@+       @@@@@#. :  %%.    - =    :        +            -=    //
//    =::*-#=#%  %    .-+  @@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@@@@@@@@+ + +++  .@%@@@@@@@@@@%   @@@@@+    @@@@@@# -  #:@@   @@@@@-      *@@@@@+%::  %%.    - =-   %       +%            *=    //
//    =* ..==*#  .     -. .@@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@@@@@@@@+.: #.@+@@@@@@@@@@@@@@@@. %@@@@%   +@@@@@@@#-  *.@+   @@@@@.      #@@@@@- -=  =%     - =:  . =      -%            %=    //
//    =+  - #%*  :     :   @@@@@@@@@@@@#=  @@@@@@@@@@@@@@@@@@@@@@+=. %#@@@@@@@@@@@%@@@@@@@.%*@@@@. @@@@@@@@#-.  - %#   @@@@@       +@@@@@-    .+%     - =    =*       #            %=    //
//    #=  :+.%*  :     :.  @@@@@@@@@@% *-  @@@@@@@@@@@@@@@@@@@@@@+=  . %@@@@@@@%# *%@@@@@@@%=@@@@@@@@@@@@@-  :    -    @@@@@       .@@@@@:= .== %     -   =    +   .- +            %=    //
//    %  .=.+%*  :     :   @@@@@@@@@@*  *:%@@@@@@@@@@@@@@@@@@@@@@+=  =  +@@@%@= + %@@@@@@@@@ @@@@@@@@@@@#    =     ::  @@@@@:      .@@@@@# .%#        -  =:.  +%-::*::=::::::.     #=    //
//    %  + # %*  :     ..   @@@#@@@@@#   ..@@@@%#%#%@@@@@####@@@@+=. -  -*#+.:=+#@@@@@@@@@@@=+@@@@@@@@@:  :  +   ::*+  @@@@@=      .@@@@@.:*-:       #  .***   %*****#=************%=    //
//    %%%%%*:-:  +++***#..  @##:*@@@@#%## =@@@@-.#--@@@@.*  *@@@@+*  :  %  .::*@@@@@@@%%@@@@@-@@@@@@@%.   +  +   ++  . @@@@@-+     .@@@@@-== .* .   .:  :   #  **:*  ==            *=    //
//    ##  =  %%  :      :*      -@@@@*:.   @@@@=%  %@@@@  # *@@@@*   :  #.##@@@@@@@@@- *@@@@@*#@@@@@% .   +  + ..## %. @@@@@ #.    .@@@@@:-   #.:.  %   .   .   .%:  :=            ==    //
//    %      %%  :      .#      -@@@@* . #+@@@@@   -@@@@  #* @@@@@+- . .@@@@@@@@@@@#   @@@@@@@-@@@@@@%    +  + :.#%%   @@@@@ :-    .@@@@@=:+   % : =#@= .    #  ##:   +            -=    //
//    %      %%  %     ::#      -@@@@*  - %@@@@@-  -@@@@   #*@@@@+++   :@@@@@@@@@@    @@@@@@@@ %@@@@@%    +  + :.#%    @@@@@   :   .@@@@@=:- :.  -# #@@@*    .   -+   =            :=    //
//    %      %%  %*    *%#      -@@@@*   # @@@@-*  -@@@@    +@@@@++*    @@@@@@@@+  =@@@@@@@@@@#.@@@@@@.   +  + :.%%    @@@@@   %   #@@@@@ ++*:   =  %@@@@     %  #+   =            :=    //
//    *      %%  :===#%#.#      -@@@@*=   #@@@@-+  -@@@@     @@@@++*     @@@@=* # *@@@@@@@@@@@# -@@@@@@.  +  + :##%    @@@@@   :#  #@@@@@: .#    +  @@@@@         #-. -            :=    //
//    %=     %%  :  .-#*-= .    -@@@@*:    @@@@*-  -@@@@+    @@@@++*   %*%#. =. %@@@@@@@@ @@@@@  @@@@@@@: +    ::#%    @@@@@    #  #@@@@@ .      +  @@@@@      #  *.+-.            :=    //
//    ==     %%  :   ++  +=     -@@@@* -   @@@@#   -@@@@%*   @@@@++*    : # =-=%@@@@@@@=  @@@@@  .@@@@@@@%+    :.*%    @@@@@.    *  @@@@@  .###**#* @@@@%      .   :=+             :=    //
//    =:     %%  :  #=  ++      -@@@@*  -  @@@@@@@@@@@@@@@@@@@@@@+#* .:*  **@%@@@@@@@@-   @@@@@   =@@@@@@@@-   :.:%    @@@@@.    :. @@@@@        :.*@@@@%      %*  +.%             +=    //
//    =.:    %%  : -+  +-      .=@@@@* .-- @@@@@@@@@@@@@@@@@@@@@@+%*     +*@@@@@@@@@+    =@@@@@    =@@@@@@@@%= :. #    @@@@@.     % @@@@@-   =#+#: @@@@@%      %:.  -+-=+         ===    //
//    = -.   #%  : #  *:    ***#%@@@@*+:  +@@@@@@@@@@@@@@@@@@@@@@+%*  @*@@@@@@@@@@%=.    @@@@@+     #@@@@@@@@: :  :    @@@@@.     :+@@@@@@@@@@@@@@@@@@@@+      % = -.#= +         + =    //
//    = .+   #%  : . *:     @@@@@@@@@@-    @@@@@@@@@@@@@@@@@@@@@@+%- . @@@@@@@@@@-%%%++%@@@@@@+     %%@@@@@@*  :   ==: @@@@@%%%%%%*+@@@@@@@@@@@@@@@@@@@@=      %  .+=+*=:        =  =    //
//    =  =-  *%  +  *:      =@@@@@@@@+     @@@@@@@@@@@@@@@@@@@@@@%%: * +@@@@@@%- +:@@@@@@@@@@@+     %#=@@@@@   .   ===:@@@@@.       @@@@@@@@@@@@@@@@@@@@=     :.=.+. +==        *   =    //
//    =  .:  =%  : =:        @@@@@@@@:     @@@@#+##++++%*#@++@@@@+%: #  @@@@#*   +:@@@@@@@@@@#:=    +%--@@@-   .  :    @@@@@.       =@@@@@@@@@@@@@@@@@@=+     % -#   +*==      -.   =    //
//    =   =+ :%  :           @@@@@@@+-     @@@@-  =    ##%+  @@@@+%  #   @* *    ==@@@@@@@@@*= +  -.+=--.*@     - %    @@@@@.        #@@@@@@@@@@@@@@@@:=+     % #+-:--= #     -     =    //
//    =   .:: %  :           %@@@@%@+-     @@@@-   -   =%%=  @@@@#=  #     +-   ++:@@@@@@@@- = -*+:*:%.*  +  +  * %    @@@@@:        =+%#%@%%%%@%@%#*+ =+     %=:-:..*= -+    .     =    //
//    =    =. %  :           ++: * %+-     @####   .. -#%:#:.  ..#%  %%#    -  =: +:#####: - --:+    **   +  + -:=*    ####%:         :+= -    . =   + =+     %*     -=  #          =    //
//    =     *.# +               +  %+=    # . .#-   :.##%+###=+#=%%  %%% *. -.#   :        -.=+      =.   +  +- %..#       --          ** #    : *   + =+    :%       =  :+         =    //
//    =       ++               *:  %++   .  + :: :   ..*%#*:    ++   #      ==     #       %=-      %%.   +  +  %.%#*      --          +# =    : +   + =+   ::%       =   #         =    //
//    =       -               :.   %++   #   *:   =   .:%  *    :+.  =     *-      +      *+ :     . %%   +  +  %%% ##     -=           = -.   - ..  + ==  .: %           .#        =    //
//    =      -                % +. %++    .   *    +    # .#:   -=-  .    # -       #    *:- :       %#   %  + .-.%  #*    -=           =. =:= - *   + --  %  %            %        =    //
//    =     .                -  *- %++         +    +   :=% %   =.-      %  -       .   #: - :       % .  + = :*%.%   +*   --           =-=  %:  #   = -. %   %      -     .#       =    //
//    =   ...                   *- %=+     +.  -    *:   %% *:  = -    +.   -        % #-  - :       % *  +==** %.=    :+  -:          + .-    ..*   = : #    %      -      #       =    //
//    =  .:.                  #:-- %-+    =:.. -   - :    :  +  = -   #.    -         #*   + :       * #..%=    %.      -= -.         +=  .%     +   - : =    %      =       +      =    //
//    = :-.                   #: : %:+    %  .+    +  -    + =- = -  *      -         +*   # -        . #=.   : %.       =.*         +=    #+    +   : =.     #      +       *      =    //
//    =.=:                    #: . % +   =        -.   -    : =:= -         -        *:.*  # -        .:% #:  = *         :-:*.    -:=     -++   +   . .             *        -     =    //
//    =*:                     #: . % +  *-        =    .    ..:*=:- .      .-       .-  :* * =        . +#.:::  -          --+-----+:       *-=  *   . -=.           #        -*    =    //
//    %:                      #: .#% -  +        .:    . -  =. -+-+.==     --            :*+ =        .-++  .   :.         -   ---          :-=-.*     --+-    .     %         +.   =    //
//    #+++++++++++++++++++++++%*+##@+++++++++++++#++++++++#+++++@**%%++++++#*+++++++++++++%@+#*++++++++@+%+++++++++++++++++#+++++++++++++++++%+@*#+++++**#+++++@+++++@+++++++++*++++#    //
//                                                                                                                                                                                       //
//                                                                                                                                                                                       //
//                                                                                                                                                                                       //
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////


contract L000 is ERC1155Creator {
    constructor() ERC1155Creator() {}
}

File 2 of 5 : ERC1155Creator.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 ERC1155Creator is Proxy {

    constructor() {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4;
        Address.functionDelegateCall(
            0x142FD5b9d67721EfDA3A5E2E9be47A96c9B724A4,
            abi.encodeWithSignature("initialize()")
        );
    }

    /**
     * @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 3 of 5 : Proxy.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (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 overriden 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 internall 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 overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

File 4 of 5 : 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 5 of 5 : 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
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 300
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Deployed Bytecode

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