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Contract Source Code Verified (Exact Match)

Contract Name:
FireworkPacket

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 500 runs

Other Settings:
default evmVersion
File 1 of 6 : FireworkPacket.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.2;

import "../ERC1155ProjectProxy.sol";

// @title: FireworkPacket

////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                        //
//                   ┌┐╕│││╕┐                                                             //
//                   ╡╡╡╡╪╪╪╣╙┐││││╕╕                                                     //
//              ┌┐╕│││┤╙╬╣╣╣╣╡╡╡╡╪╪╪╬╬││││││┤╦                                            //
//             │╧╡╡╡╡╪╪╣╙││││││┤╠╣╝╨╨╨╙╡╪╪╬╬╬╬                                            //
//        ╕│││││┤┤╡╣╣╬╩╝╡╡╪╪╪╪╬╬╬││┤┤┤┤┤╡╣╣╣╣╬                                            //
//        ╡╪╪╬╬╣╬╬╣││││││┤┤╠╣╬╬╩╝╚╠╬╣╣╣╣╬╣╣╣╣╣                                            //
//        ╡╠╬╣╣╣╣╣╣╪╪╪╪╬╬╬╬╣││││││┤┤╢╣╣╣╬╣│╠╣╣                                            //
//        ╚╩╬╣╣╣╣╣╣╪╠╬╣╣╣╣╣╣╪╪╪╪╬╬╬╬╣╬╣╣╣╛│╠╣╣                                            //
//        ││┘┐┐┼╣╬╣╚╝╬╣╣╣╣╣╣╪╠╬╣╣╣╣╬╣│╠╣╬╕│╠╣╣                                            //
//        ││┘┐┐┼╣╬╣││└┐│╪╣╬╣╚╝╬╣╣╣╣╣╝│╠╣╬╕│╠╣╣                                            //
//        ││┘┐┐┼╣╬╣││└┐│╪╣╬╣│┘└┐│╠╣╬╕│╠╣╬╕│╠╣╬╣╠╟                                         //
//        ││┘┐┐┼╣╬╣││└┐│╪╣╬╣│┘└┐│╠╣╬╕│╠╣╬╕│╠╣╣╡╡╡                                         //
//       ╦╡│┘┐┐┼╣╬╣││└┐│╪╣╬╣│┘└┐│╠╣╬╕│╠╣╬╕├╬╬╫ ╡╠                                         //
//    ┤╟╬╣├│┘┐┐┼╣╬╣││└┐│╪╣╬╣│┘└┐│╠╣╬╕│╠╣╣╬╣╬╣╬╗╪╟                                         //
//    ┤┼╬╩╬╬╬╠╪╪╣╬╣││└┐│╪╣╬╣│┘┐┐│╠╣╬╕│╢╣╣╨│╠╣╣╣╠╣                                         //
//    ╡╪╡ ││┘╙╙║╣╣╣╣╣╬╬╪╬╣╬╣│┘┐┐│╠╣╣╗╬╣╣╬╕│╠╣╬╙╣╣                                         //
//    ╪╠╣╬╡│┘┐┐┼╣╬╣┤┤╙╨╨╣╣╣╣╣╣╬╗╡╣╣╣╝┤╠╣╬╗╪╣╣╣╗╣╣                                         //
//    ╬╬╬╟╬╪╗╥╓┼╣╬╣││└┐│╪╣╬╣╙╨╨╝╡┤╟╣╕│╠╣╣╣╩╠╣╣╣╣╣                                         //
//    ╣╣╣ ╚╨╨╝╬╣╣╣╣╪╗╥╓│╪╣╬╣│┘┐┐╡╡╬╬╕╗╣╣╣╕│╠╣╣╩                                           //
//    ╣╣╣╬╡│┘┐┐┼╣╬╣╝╝╣╣╣╣╣╣╣╗╥┐┐╪╪╣╣╣╣╬╣╬╧╗╬╩ ╙╥                                          //
//    ╣╣╣╬┤┤┐┐┐┼╣╣╜││└┐│╠╣╬╣╬╬╣╣╬║╣╬╛│╩╝╣╬╩ ╙═╥ ╙╥                                        //
//    ╨╬╙╙╚╝╬╬╬╗╦╓┌││└┐│╪╣╣─│┘└┘╢╬╣╬─└╫╣╝╨═╥╥╓ └╙╥╗                                       //
//             └╙╙╝╣╣╣╬╗╗╓  └│┐┐╣╣╣╝╣╬╝╨══════╝╝╣╣╣╣                                      //
//                     ╙╙╩╬╣╣╬╬╦╣╣╣╬╝              └╗                                     //
//                            └╙╬╣╣                 ╫                                     //
//                                                   ╗                                    //
//                                                   ╫                                    //
//                                                   ╚                                    //
//                                                    └╙╗┌ ╓╓╓╓╗╗╗╪╪╥╠╣╬╬╣╣╗╗╓            //
//                                                        ╙╙╬╟└    ┌╣╠╬╬╬╬╬╬╬╬╣╣╣╣╣╗┌     //
//                                                            ╙╤  ╫╬╬╬╨└    └╙╣╣╣╣╣╣╗     //
//                                                              ╠╣╫╬╬╣┌    ┌┌╖╣╣╣╣╨╡╬┴    //
//                                                            ╓╣╬╬╬╬╬╬╬╣╣╣╣╣╣╬╣╣╣╡╢╝      //
//                                                            ╙╨╨╝╣╬╬╬╬╬╬╬╬╬╬╬╣╡╡╬╙       //
//                                                           ╬╡┤│┘└┐─┘╨╨╩╣╣╬╣╣╡╠╝         //
//                                                             └╙╜╪╗╗┐┐└└││┤╠╪╣╙          //
//                                                                    ╙╙╧╪╗╥╡╝            //
//                                                                                        //
////////////////////////////////////////////////////////////////////////////////////////////

contract FireworkPacket is ERC1155ProjectProxy {
    constructor(address _impl) ERC1155ProjectProxy(_impl) {}
}

File 2 of 6 : ERC1155ProjectProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.2;

import "@openzeppelin/contracts/utils/Address.sol";
import "./core/project-base/ProjectProxy.sol";

/**
 * @dev ERC721Project Upgradeable Proxy
 */
contract ERC1155ProjectProxy is ProjectProxy {
    constructor(address _impl) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_impl);
        Address.functionDelegateCall(_impl, abi.encodeWithSignature("initialize()"));
    }
}

File 3 of 6 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 4 of 6 : ProjectProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.2;

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

/**
 * @dev Abstract Project Proxy
 */
abstract contract ProjectProxy is Proxy {
    /**
     * @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();
    }

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

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

File 5 of 6 : Proxy.sol
// SPDX-License-Identifier: MIT

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 internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        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 6 of 6 : StorageSlot.sol
// SPDX-License-Identifier: MIT

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": 500
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_impl","type":"address"}],"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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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000094f015180265e7d74ebe464ca759a59eddbdc654

-----Decoded View---------------
Arg [0] : _impl (address): 0x94f015180265E7D74eBe464cA759A59edDbdc654

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000094f015180265e7d74ebe464ca759a59eddbdc654


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OVERVIEW

Your Daytime Fireworks is an immersive NFT art experience from Chinese contemporary artist, Cai Guo-Qiang. Participate in all three chapters—Golden Tickets, Firework Packet Minting, and Your Daytime Fireworks—and set off virtual daytime fireworks of your own.

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.