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   - function _getImplementation()    - function _setImplementation(address n ...    - function _upgradeTo(address newImplem ...    - function _upgradeToAndCall(address ne ...    - function getAddressSlot(bytes32 slot)    - function _delegate(address implementa ...    - function _implementation()    - function _fallback()  contract ERC1967Proxy is Proxy, ER ...    - function _implementation()  contract ERC721Drop is ERC1967Prox ... *    - function upgradeTo(address newImpleme ...    - function implementation()    - function _setProxyAdmin(address newAd ...    - function _getProxyAdmin()

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/**
 *Submitted for verification at Etherscan.io on 2023-11-16
*/

// SPDX-License-Identifier: MIT  
// File: contracts/ERC1967Upgrade.sol


// --- ZoraERC721 Contract. --- 

pragma solidity ^0.8.7;

abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @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 Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        // require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _upgradeTo(newImplementation);
        // if (data.length > 0 || forceCall) {
        //     functionDelegateCall(newImplementation, data, "Address: low-level delegate call failed");
        // }
    }

    struct AddressSlot {
        address value;
    }
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}

// File: contracts/proxy.sol



pragma solidity ^0.8.7;

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 {
        _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();
    }
}

// File: contracts/ERC1967Proxy.sol


// --- ZoraERC721 Contract. --- 

pragma solidity ^0.8.7;



contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializing the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}

// File: contracts/StandaloneProxyUpgradeable.sol



pragma solidity ^0.8.20;


contract ERC721Drop is ERC1967Proxy {
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _PROXY_ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6104;
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(address _logic) payable ERC1967Proxy(_logic, bytes("")) {
        _setProxyAdmin(msg.sender);
    }

    function upgradeTo(address newImplementation) public {
        require(_getProxyAdmin() == msg.sender, "No Proxy Admin");
        _upgradeTo(newImplementation);
    }


    function implementation() public view returns (address) {
        return _implementation();
    }

        /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setProxyAdmin(address newAdmin) private {
        // require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        getAddressSlot(_PROXY_ADMIN_SLOT).value = newAdmin;
    }

        /**
     * @dev Returns the current implementation address.
     */
    function _getProxyAdmin() internal view returns (address) {
        return getAddressSlot(_PROXY_ADMIN_SLOT).value;
    }
}

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[{"inputs":[{"internalType":"address","name":"_logic","type":"address"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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0000000000000000000000004eec933329628a84eb8bb3e71b8f8cceeacbb9a9

-----Decoded View---------------
Arg [0] : _logic (address): 0x4EEC933329628A84eb8bB3E71B8F8CCEEaCbB9a9

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004eec933329628a84eb8bb3e71b8f8cceeacbb9a9

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ipfs://726122696f5f905112a1c476bc73061afcf0e0439f5007efd8194129bc3f38ce