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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract Proxy {
    // Code position in storage is keccak256("PROXIABLE") = "0xc5f16f0fcc639fa48a6947836d9850f504798523bf8c9a3a87d5876cf622bcf7"
    uint256 constant PROXIABLE_MEM_SLOT =
        0xc5f16f0fcc639fa48a6947836d9850f504798523bf8c9a3a87d5876cf622bcf7;

    // constructor(bytes memory constructData, address contractLogic) public {
    constructor(address contractLogic) {
        // Verify a valid address was passed in
        require(contractLogic != address(0), "Contract Logic cannot be 0x0");

        // save the code address
        assembly {
            // solium-disable-line
            sstore(PROXIABLE_MEM_SLOT, contractLogic)
        }
    }

    fallback() external payable {
        assembly {
            // solium-disable-line
            let contractLogic := sload(PROXIABLE_MEM_SLOT)
            let ptr := mload(0x40)
            calldatacopy(ptr, 0x0, calldatasize())
            let success := delegatecall(
                gas(),
                contractLogic,
                ptr,
                calldatasize(),
                0,
                0
            )
            let retSz := returndatasize()
            returndatacopy(ptr, 0, retSz)
            switch success
            case 0 {
                revert(ptr, retSz)
            }
            default {
                return(ptr, retSz)
            }
        }
    }
}

{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• TechRate - Dec 16th, 2021 - Security Audit Report

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

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

0x60806040527fc5f16f0fcc639fa48a6947836d9850f504798523bf8c9a3a87d5876cf622bcf75460405136600082376000803683855af491503d806000833e8280156048578183f35b8183fdfea26469706673582212205ba3ef47360b6c73203875ef0108514e12ddb3fd41522ddc47f5a21fc9b81dc764736f6c634300080a0033

0000000000000000000000004859df02d1c7cd85c2a283708958aaa7728bad67

-----Decoded View---------------
Arg [0] : contractLogic (address): 0x4859dF02d1c7cD85c2A283708958AaA7728baD67

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004859df02d1c7cd85c2a283708958aaa7728bad67