// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

/**
 * @title Proxy // This is the user's Smart Account
 * @notice Basic proxy that delegates all calls to a fixed implementation contract.
 * @dev    Implementation address is stored in the slot defined by the Proxy's address
 */
contract Proxy {
    constructor(address _implementation) {
        require(
            _implementation != address(0),
            "Invalid implementation address"
        );
        assembly {
            sstore(address(), _implementation)
        }
    }

    fallback() external payable {
        address target;
        assembly {
            target := sload(address())
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(gas(), target, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }
}

{
  "viaIR": true,
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "runs": 800,
    "enabled": true
  },
  "evmVersion": "london",
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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

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