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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/**
 * @title Minimal Proxy Contract
 * @dev Enhanced proxy implementation compatible with EIP-1967
 */
contract Proxy {
    // EIP-1967 storage slots
    bytes32 private constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    constructor(address _impl) {
        require(_impl != address(0), "Invalid implementation");
    
        assembly {
            sstore(IMPLEMENTATION_SLOT, _impl)
        }
    }

    /**
     * @dev Receive function to accept ETH
     */
    receive() external payable {
        _fallback();
    }

    /**
     * @dev Fallback function for all other calls
     */
    fallback() external payable {
        _fallback();
    }

    /**
     * @dev Returns the current implementation address
     */
    function _implementation() internal view returns (address impl) {
        assembly {
            impl := sload(IMPLEMENTATION_SLOT)
        }
    }

    /**
     * @dev Core delegation function
     */
    function _fallback() internal {
        address _impl = _implementation();
        require(_impl != address(0), "Implementation not set");

        assembly {
            // The pointer to the free memory slot
            let ptr := mload(0x40)
            // Copy function signature and arguments from calldata
            calldatacopy(ptr, 0, calldatasize())
            // Delegate call to the implementation contract
            let result := delegatecall(gas(), _impl, ptr, calldatasize(), 0, 0)
            // Get the size of the last return data
            let size := returndatasize()
            // Copy the return data
            returndatacopy(ptr, 0, size)
            
            switch result
            case 0 {
                revert(ptr, size)
            }
            default {
                return(ptr, size)
            }
        }
    }
}

{
  "viaIR": true,
  "codegen": "yul",
  "remappings": [
    "solady/=lib/solady/",
    "solemate/=/lib/solemate/src/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
    "forge-std/=lib/forge-std/src/",
    "erc721a/contracts/=lib/ERC721A/contracts/",
    "erc721a-upgradeable/contracts/=lib/ERC721A-Upgradeable/contracts/",
    "@limitbreak/creator-token-standards/src/=lib/creator-token-standards/src/",
    "@limitbreak/permit-c/=lib/creator-token-standards/lib/PermitC/src/",
    "@opensea/tstorish/=lib/creator-token-standards/lib/tstorish/src/",
    "@openzeppelin/=lib/creator-token-standards/lib/openzeppelin-contracts/",
    "@rari-capital/solmate/=lib/creator-token-standards/lib/PermitC/lib/solmate/",
    "ERC721A-Upgradeable/=lib/ERC721A-Upgradeable/contracts/",
    "ERC721A/=lib/creator-token-standards/lib/ERC721A/contracts/",
    "PermitC/=lib/creator-token-standards/lib/PermitC/",
    "creator-token-standards/=lib/creator-token-standards/",
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "erc4626-tests/=lib/creator-token-standards/lib/PermitC/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "erc721a/=lib/creator-token-standards/lib/ERC721A/",
    "forge-gas-metering/=lib/creator-token-standards/lib/PermitC/lib/forge-gas-metering/",
    "murky/=lib/creator-token-standards/lib/murky/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/creator-token-standards/lib/PermitC/lib/openzeppelin-contracts/contracts/",
    "solmate/=lib/solmate/src/",
    "tstorish/=lib/creator-token-standards/lib/tstorish/src/"
  ],
  "evmVersion": "cancun",
  "outputSelection": {
    "*": {
      "*": [
        "abi",
        "metadata"
      ],
      "": [
        "ast"
      ]
    }
  },
  "optimizer": {
    "enabled": true,
    "mode": "3",
    "fallback_to_optimizing_for_size": false,
    "disable_system_request_memoization": true
  },
  "metadata": {},
  "libraries": {},
  "detectMissingLibraries": false,
  "enableEraVMExtensions": false,
  "forceEVMLA": false
}

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[{"inputs":[{"internalType":"address","name":"_impl","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000b18cd49772bf0610d0eb9c9cb88c6b2fe4f9c8ab

-----Decoded View---------------
Arg [0] : _impl (address): 0xB18CD49772bf0610d0eB9c9cB88c6b2fe4f9C8Ab

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000b18cd49772bf0610d0eb9c9cb88c6b2fe4f9c8ab