Contract 0x6acbF8d58f785541438e979305A59636E729Df9c

 
Txn Hash Method
Block
From
To
Value
0x170f8575364f02c936dbfdbc7b788929497d7ecefc98e306bca98822716983cdSet Arborist407464772022-11-22 5:30:02379 days 11 hrs agoCentre: Deployer IN  0x6acbf8d58f785541438e979305a59636e729df9c0 ETH0.0000371409690.001
0x798c6812e8220a667e1ccd96429dca40b95ec90dca24ebdaa88c53418633d5f90x60a06040407427592022-11-22 5:18:17379 days 12 hrs agoCentre: Deployer IN  Create: UpgradeBeaconProxy0 ETH0.0002635081030.001
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.

Contract Source Code Verified (Exact Match)

Contract Name:
UpgradeBeaconProxy

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
File 1 of 2 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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");

        (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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 2 of 2 : UpgradeBeaconProxy.sol
// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity 0.8.17;

// ============ External Imports ============
import {Address} from "@openzeppelin/contracts/utils/Address.sol";

/**
 * @title UpgradeBeaconProxy
 * @notice
 * Proxy contract which delegates all logic, including initialization,
 * to an implementation contract.
 * The implementation contract is stored within an Upgrade Beacon contract;
 * the implementation contract can be changed by performing an upgrade on the Upgrade Beacon contract.
 * The Upgrade Beacon contract for this Proxy is immutably specified at deployment.
 * @dev This implementation combines the gas savings of keeping the UpgradeBeacon address outside of contract storage
 * found in 0age's implementation:
 * https://github.com/dharma-eng/dharma-smart-wallet/blob/master/contracts/proxies/smart-wallet/UpgradeBeaconProxyV1.sol
 * With the added safety checks that the UpgradeBeacon and implementation are contracts at time of deployment
 * found in OpenZeppelin's implementation:
 * https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/proxy/beacon/BeaconProxy.sol
 */
contract UpgradeBeaconProxy {
  // ============ Immutables ============

  // Upgrade Beacon address is immutable (therefore not kept in contract storage)
  address private immutable upgradeBeacon;

  // ============ Constructor ============

  /**
   * @notice Validate that the Upgrade Beacon is a contract, then set its
   * address immutably within this contract.
   * Validate that the implementation is also a contract,
   * Then call the initialization function defined at the implementation.
   * The deployment will revert and pass along the
   * revert reason if the initialization function reverts.
   * @param _upgradeBeacon Address of the Upgrade Beacon to be stored immutably in the contract
   * @param _initializationCalldata Calldata supplied when calling the initialization function
   */
  constructor(address _upgradeBeacon, bytes memory _initializationCalldata) payable {
    // Validate the Upgrade Beacon is a contract
    require(Address.isContract(_upgradeBeacon), "beacon !contract");
    // set the Upgrade Beacon
    upgradeBeacon = _upgradeBeacon;
    // Validate the implementation is a contract
    address _implementation = _getImplementation(_upgradeBeacon);
    require(Address.isContract(_implementation), "beacon implementation !contract");
    // Call the initialization function on the implementation
    if (_initializationCalldata.length > 0) {
      _initialize(_implementation, _initializationCalldata);
    }
  }

  // ============ External Functions ============

  /**
   * @notice Forwards all calls with data to _fallback()
   * No public functions are declared on the contract, so all calls hit fallback
   */
  fallback() external payable {
    _fallback();
  }

  /**
   * @notice Forwards all calls with no data to _fallback()
   */
  receive() external payable {
    _fallback();
  }

  // ============ Private Functions ============

  /**
   * @notice Call the initialization function on the implementation
   * Used at deployment to initialize the proxy
   * based on the logic for initialization defined at the implementation
   * @param _implementation - Contract to which the initalization is delegated
   * @param _initializationCalldata - Calldata supplied when calling the initialization function
   */
  function _initialize(address _implementation, bytes memory _initializationCalldata) private {
    // Delegatecall into the implementation, supplying initialization calldata.
    (bool _ok, ) = _implementation.delegatecall(_initializationCalldata);
    // Revert and include revert data if delegatecall to implementation reverts.
    if (!_ok) {
      assembly {
        returndatacopy(0, 0, returndatasize())
        revert(0, returndatasize())
      }
    }
  }

  /**
   * @notice Delegates function calls to the implementation contract returned by the Upgrade Beacon
   */
  function _fallback() private {
    _delegate(_getImplementation());
  }

  /**
   * @notice Delegate function execution to the implementation contract
   * @dev This is a low level function that doesn't return to its internal
   * call site. It will return whatever is returned by the implementation to the
   * external caller, reverting and returning the revert data if implementation
   * reverts.
   * @param _implementation - Address to which the function execution is delegated
   */
  function _delegate(address _implementation) private {
    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())
      // Delegatecall to the implementation, supplying calldata and gas.
      // Out and outsize are set to zero - instead, use the return buffer.
      let result := delegatecall(gas(), _implementation, 0, calldatasize(), 0, 0)
      // Copy the returned data from the return buffer.
      returndatacopy(0, 0, returndatasize())
      switch result
      // Delegatecall returns 0 on error.
      case 0 {
        revert(0, returndatasize())
      }
      default {
        return(0, returndatasize())
      }
    }
  }

  /**
   * @notice Call the Upgrade Beacon to get the current implementation contract address
   * @return _implementation Address of the current implementation.
   */
  function _getImplementation() private view returns (address _implementation) {
    _implementation = _getImplementation(upgradeBeacon);
  }

  /**
   * @notice Call the Upgrade Beacon to get the current implementation contract address
   * @dev _upgradeBeacon is passed as a parameter so that
   * we can also use this function in the constructor,
   * where we can't access immutable variables.
   * @param _upgradeBeacon Address of the UpgradeBeacon storing the current implementation
   * @return _implementation Address of the current implementation.
   */
  function _getImplementation(address _upgradeBeacon) private view returns (address _implementation) {
    // Get the current implementation address from the upgrade beacon.
    (bool _ok, bytes memory _returnData) = _upgradeBeacon.staticcall("");
    // Revert and pass along revert message if call to upgrade beacon reverts.
    require(_ok, string(_returnData));
    // Set the implementation to the address returned from the upgrade beacon.
    _implementation = abi.decode(_returnData, (address));
  }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_upgradeBeacon","type":"address"},{"internalType":"bytes","name":"_initializationCalldata","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"stateMutability":"payable","type":"receive"}]

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

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

000000000000000000000000ffa5e2df76b9cc453609de4c1da551926110a4af00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000024c4d66de8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _upgradeBeacon (address): 0xFfA5E2dF76b9cc453609DE4c1dA551926110a4AF
Arg [1] : _initializationCalldata (bytes): 0xc4d66de80000000000000000000000000000000000000000000000000000000000000000

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000ffa5e2df76b9cc453609de4c1da551926110a4af
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000024
Arg [3] : c4d66de800000000000000000000000000000000000000000000000000000000
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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