Contract 0x2e34168Bf6532523AD01A73394Ce7Fb634898F26 5

 
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0x752392b70dac84ad764ac1cf792eceb338c37d03ec990752d56a3c5d5f034ad4Upgrade372267612022-11-11 13:41:52503 days 6 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.000038140.1
0xccdf874790b45fda15a4ad40b37a0e8c728f0b664dc826799353ebdc59491c80Upgrade372265802022-11-11 13:41:06503 days 6 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.000038140.1
0xf6aa4a4fd3c2dba3be7077b093be1a2faf00acb286cf25a72c5bf953612aaec0Upgrade372264812022-11-11 13:40:40503 days 6 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.000038140.1
0x018c6befa3c84c65eccfe3223c84ccaf0b129e087410369917dc15d72ea1bbedUpgrade315462912022-10-21 14:41:07524 days 5 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.00005024 0.1
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0xab9d1276410d2e04d3ade36bca8e00d70cdb395b8be74bf7179298516f527cbeUpgrade315461032022-10-21 14:40:08524 days 5 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.00005102 0.1
0x2100c270ab34b58ca8f1a10ae4bf7a3849f287af9aa4a3177761de43e07239e9Upgrade308251152022-10-18 16:45:45527 days 3 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.00005987 0.1
0xfa5a697557fbc458e0e70394c7661e8cf0fa0815f64dcd7ec3fedf50e3a8a4fdUpgrade308250372022-10-18 16:45:16527 days 3 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.00005987 0.1
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0x5bf7f6522a14fdb34d42829d4e588ae4c7f90382b34f6bdd4b6c69889d2ceffdUpgrade276577192022-09-30 19:46:58545 days 37 mins ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.0000297 0.1
0x79d31d1032b2c55318a2fb52d1ad6875f7cfa6e8b4474b7b0c4b66ae31842d5cUpgrade181267902022-07-20 16:39:32617 days 3 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  0x2e34168bf6532523ad01a73394ce7fb634898f260 ETH0.000157233915 ETH0.311185447
0x3558b3a37f7bebc39d4589977b256cee8747e1db6d16636dcbb5277623bf4edd0x60806040141360452022-06-09 9:06:43658 days 11 hrs ago0xdbeb35889fa2677564ed765df2f7920d30078972 IN  Contract Creation0 ETH0.002381565671 ETH0.597404671
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0x752392b70dac84ad764ac1cf792eceb338c37d03ec990752d56a3c5d5f034ad4372267612022-11-11 13:41:52503 days 6 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0xe05383a18a1e1213e55d720cfdbc6348920ed4cb0 ETH
0xccdf874790b45fda15a4ad40b37a0e8c728f0b664dc826799353ebdc59491c80372265802022-11-11 13:41:06503 days 6 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x104971fd99b48b5920e5c1e4267e9451fa3c75320 ETH
0xf6aa4a4fd3c2dba3be7077b093be1a2faf00acb286cf25a72c5bf953612aaec0372264812022-11-11 13:40:40503 days 6 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x28eb16be51a7b68e50f9b00df80e94999b45a13a0 ETH
0x018c6befa3c84c65eccfe3223c84ccaf0b129e087410369917dc15d72ea1bbed315462912022-10-21 14:41:07524 days 5 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0xe05383a18a1e1213e55d720cfdbc6348920ed4cb0 ETH
0x1355f70b7bf1521c717788a494ba7ac0d1651bd7b25bbb462be24343759566d0315462062022-10-21 14:40:36524 days 5 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x104971fd99b48b5920e5c1e4267e9451fa3c75320 ETH
0xab9d1276410d2e04d3ade36bca8e00d70cdb395b8be74bf7179298516f527cbe315461032022-10-21 14:40:08524 days 5 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x28eb16be51a7b68e50f9b00df80e94999b45a13a0 ETH
0x2100c270ab34b58ca8f1a10ae4bf7a3849f287af9aa4a3177761de43e07239e9308251152022-10-18 16:45:45527 days 3 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0xe05383a18a1e1213e55d720cfdbc6348920ed4cb0 ETH
0xfa5a697557fbc458e0e70394c7661e8cf0fa0815f64dcd7ec3fedf50e3a8a4fd308250372022-10-18 16:45:16527 days 3 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x104971fd99b48b5920e5c1e4267e9451fa3c75320 ETH
0x63f2f5c63a42d65c77893503c28d18fc67b0d466026cc0dec65f06a20d25913f308249292022-10-18 16:44:30527 days 3 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x28eb16be51a7b68e50f9b00df80e94999b45a13a0 ETH
0x5bf7f6522a14fdb34d42829d4e588ae4c7f90382b34f6bdd4b6c69889d2ceffd276577192022-09-30 19:46:58545 days 37 mins ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x28eb16be51a7b68e50f9b00df80e94999b45a13a0 ETH
0x79d31d1032b2c55318a2fb52d1ad6875f7cfa6e8b4474b7b0c4b66ae31842d5c181267902022-07-20 16:39:32617 days 3 hrs ago 0x2e34168bf6532523ad01a73394ce7fb634898f26 0x28eb16be51a7b68e50f9b00df80e94999b45a13a0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x0ff5a8451a839f5f0bb3562689d9a44089738d11
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
ProxyAdmin

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Arbiscan.io on 2021-10-07
*/

// 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 @openzeppelin/contracts/proxy/beacon/[email protected]

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
  /**
   * @dev Must return an address that can be used as a delegate call target.
   *
   * {BeaconProxy} will check that this address is a contract.
   */
  function implementation() external view returns (address);
}

// File @openzeppelin/contracts/utils/[email protected]

/**
 * @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 @openzeppelin/contracts/utils/[email protected]

/**
 * @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
    }
  }
}

// File @openzeppelin/contracts/proxy/ERC1967/[email protected]

pragma solidity ^0.8.2;

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
  // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
  bytes32 private constant _ROLLBACK_SLOT =
    0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

  /**
   * @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 Emitted when the implementation is upgraded.
   */
  event Upgraded(address indexed implementation);

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

  /**
   * @dev Stores a new address in the EIP1967 implementation slot.
   */
  function _setImplementation(address newImplementation) private {
    require(
      Address.isContract(newImplementation),
      "ERC1967: new implementation is not a contract"
    );
    StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
  }

  /**
   * @dev Perform implementation upgrade
   *
   * Emits an {Upgraded} event.
   */
  function _upgradeTo(address newImplementation) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
  }

  /**
   * @dev Perform implementation upgrade with additional setup call.
   *
   * Emits an {Upgraded} event.
   */
  function _upgradeToAndCall(
    address newImplementation,
    bytes memory data,
    bool forceCall
  ) internal {
    _setImplementation(newImplementation);
    emit Upgraded(newImplementation);
    if (data.length > 0 || forceCall) {
      Address.functionDelegateCall(newImplementation, data);
    }
  }

  /**
   * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
   *
   * Emits an {Upgraded} event.
   */
  function _upgradeToAndCallSecure(
    address newImplementation,
    bytes memory data,
    bool forceCall
  ) internal {
    address oldImplementation = _getImplementation();

    // Initial upgrade and setup call
    _setImplementation(newImplementation);
    if (data.length > 0 || forceCall) {
      Address.functionDelegateCall(newImplementation, data);
    }

    // Perform rollback test if not already in progress
    StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot
      .getBooleanSlot(_ROLLBACK_SLOT);
    if (!rollbackTesting.value) {
      // Trigger rollback using upgradeTo from the new implementation
      rollbackTesting.value = true;
      Address.functionDelegateCall(
        newImplementation,
        abi.encodeWithSignature("upgradeTo(address)", oldImplementation)
      );
      rollbackTesting.value = false;
      // Check rollback was effective
      require(
        oldImplementation == _getImplementation(),
        "ERC1967Upgrade: upgrade breaks further upgrades"
      );
      // Finally reset to the new implementation and log the upgrade
      _setImplementation(newImplementation);
      emit Upgraded(newImplementation);
    }
  }

  /**
   * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
   * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
   *
   * Emits a {BeaconUpgraded} event.
   */
  function _upgradeBeaconToAndCall(
    address newBeacon,
    bytes memory data,
    bool forceCall
  ) internal {
    _setBeacon(newBeacon);
    emit BeaconUpgraded(newBeacon);
    if (data.length > 0 || forceCall) {
      Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
    }
  }

  /**
   * @dev Storage slot with the admin of the contract.
   * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
   * validated in the constructor.
   */
  bytes32 internal constant _ADMIN_SLOT =
    0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

  /**
   * @dev Emitted when the admin account has changed.
   */
  event AdminChanged(address previousAdmin, address newAdmin);

  /**
   * @dev Returns the current admin.
   */
  function _getAdmin() internal view returns (address) {
    return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
  }

  /**
   * @dev Stores a new address in the EIP1967 admin slot.
   */
  function _setAdmin(address newAdmin) private {
    require(newAdmin != address(0), "ERC1967: new admin is the zero address");
    StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
  }

  /**
   * @dev Changes the admin of the proxy.
   *
   * Emits an {AdminChanged} event.
   */
  function _changeAdmin(address newAdmin) internal {
    emit AdminChanged(_getAdmin(), newAdmin);
    _setAdmin(newAdmin);
  }

  /**
   * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
   * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
   */
  bytes32 internal constant _BEACON_SLOT =
    0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

  /**
   * @dev Emitted when the beacon is upgraded.
   */
  event BeaconUpgraded(address indexed beacon);

  /**
   * @dev Returns the current beacon.
   */
  function _getBeacon() internal view returns (address) {
    return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
  }

  /**
   * @dev Stores a new beacon in the EIP1967 beacon slot.
   */
  function _setBeacon(address newBeacon) private {
    require(
      Address.isContract(newBeacon),
      "ERC1967: new beacon is not a contract"
    );
    require(
      Address.isContract(IBeacon(newBeacon).implementation()),
      "ERC1967: beacon implementation is not a contract"
    );
    StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
  }
}

// File @openzeppelin/contracts/proxy/ERC1967/[email protected]

/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
  /**
   * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
   *
   * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
   * function call, and allows initializating the storage of the proxy like a Solidity constructor.
   */
  constructor(address _logic, bytes memory _data) payable {
    assert(
      _IMPLEMENTATION_SLOT ==
        bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)
    );
    _upgradeToAndCall(_logic, _data, false);
  }

  /**
   * @dev Returns the current implementation address.
   */
  function _implementation()
    internal
    view
    virtual
    override
    returns (address impl)
  {
    return ERC1967Upgrade._getImplementation();
  }
}

// File @openzeppelin/contracts/proxy/transparent/[email protected]

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
  /**
   * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
   * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
   */
  constructor(
    address _logic,
    address admin_,
    bytes memory _data
  ) payable ERC1967Proxy(_logic, _data) {
    assert(
      _ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)
    );
    _changeAdmin(admin_);
  }

  /**
   * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
   */
  modifier ifAdmin() {
    if (msg.sender == _getAdmin()) {
      _;
    } else {
      _fallback();
    }
  }

  /**
   * @dev Returns the current admin.
   *
   * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
   *
   * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
   * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
   * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
   */
  function admin() external ifAdmin returns (address admin_) {
    admin_ = _getAdmin();
  }

  /**
   * @dev Returns the current implementation.
   *
   * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
   *
   * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
   * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
   * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
   */
  function implementation() external ifAdmin returns (address implementation_) {
    implementation_ = _implementation();
  }

  /**
   * @dev Changes the admin of the proxy.
   *
   * Emits an {AdminChanged} event.
   *
   * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
   */
  function changeAdmin(address newAdmin) external virtual ifAdmin {
    _changeAdmin(newAdmin);
  }

  /**
   * @dev Upgrade the implementation of the proxy.
   *
   * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
   */
  function upgradeTo(address newImplementation) external ifAdmin {
    _upgradeToAndCall(newImplementation, bytes(""), false);
  }

  /**
   * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
   * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
   * proxied contract.
   *
   * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
   */
  function upgradeToAndCall(address newImplementation, bytes calldata data)
    external
    payable
    ifAdmin
  {
    _upgradeToAndCall(newImplementation, data, true);
  }

  /**
   * @dev Returns the current admin.
   */
  function _admin() internal view virtual returns (address) {
    return _getAdmin();
  }

  /**
   * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
   */
  function _beforeFallback() internal virtual override {
    require(
      msg.sender != _getAdmin(),
      "TransparentUpgradeableProxy: admin cannot fallback to proxy target"
    );
    super._beforeFallback();
  }
}

// File @openzeppelin/contracts/utils/[email protected]

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
  function _msgSender() internal view virtual returns (address) {
    return msg.sender;
  }

  function _msgData() internal view virtual returns (bytes calldata) {
    this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
    return msg.data;
  }
}

// File @openzeppelin/contracts/access/[email protected]

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
  address private _owner;

  event OwnershipTransferred(
    address indexed previousOwner,
    address indexed newOwner
  );

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor() {
    address msgSender = _msgSender();
    _owner = msgSender;
    emit OwnershipTransferred(address(0), msgSender);
  }

  /**
   * @dev Returns the address of the current owner.
   */
  function owner() public view virtual returns (address) {
    return _owner;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(owner() == _msgSender(), "Ownable: caller is not the owner");
    _;
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions anymore. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby removing any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Can only be called by the current owner.
   */
  function transferOwnership(address newOwner) public virtual onlyOwner {
    require(newOwner != address(0), "Ownable: new owner is the zero address");
    emit OwnershipTransferred(_owner, newOwner);
    _owner = newOwner;
  }
}

// File contracts/ProxyAdmin.sol

/**
 * @dev This is an auxiliary contract meant to be assigned as the admin of a {TransparentUpgradeableProxy}. For an
 * explanation of why you would want to use this see the documentation for {TransparentUpgradeableProxy}.
 */
contract ProxyAdmin is Ownable {
  /**
   * @dev Returns the current implementation of `proxy`.
   *
   * Requirements:
   *
   * - This contract must be the admin of `proxy`.
   */
  function getProxyImplementation(TransparentUpgradeableProxy proxy)
    public
    view
    virtual
    returns (address)
  {
    // We need to manually run the static call since the getter cannot be flagged as view
    // bytes4(keccak256("implementation()")) == 0x5c60da1b
    (bool success, bytes memory returndata) = address(proxy).staticcall(
      hex"5c60da1b"
    );
    require(success);
    return abi.decode(returndata, (address));
  }

  /**
   * @dev Returns the current admin of `proxy`.
   *
   * Requirements:
   *
   * - This contract must be the admin of `proxy`.
   */
  function getProxyAdmin(TransparentUpgradeableProxy proxy)
    public
    view
    virtual
    returns (address)
  {
    // We need to manually run the static call since the getter cannot be flagged as view
    // bytes4(keccak256("admin()")) == 0xf851a440
    (bool success, bytes memory returndata) = address(proxy).staticcall(
      hex"f851a440"
    );
    require(success);
    return abi.decode(returndata, (address));
  }

  /**
   * @dev Changes the admin of `proxy` to `newAdmin`.
   *
   * Requirements:
   *
   * - This contract must be the current admin of `proxy`.
   */
  function changeProxyAdmin(TransparentUpgradeableProxy proxy, address newAdmin)
    public
    virtual
    onlyOwner
  {
    proxy.changeAdmin(newAdmin);
  }

  /**
   * @dev Upgrades `proxy` to `implementation`. See {TransparentUpgradeableProxy-upgradeTo}.
   *
   * Requirements:
   *
   * - This contract must be the admin of `proxy`.
   */
  function upgrade(TransparentUpgradeableProxy proxy, address implementation)
    public
    virtual
    onlyOwner
  {
    proxy.upgradeTo(implementation);
  }

  /**
   * @dev Upgrades `proxy` to `implementation` and calls a function on the new implementation. See
   * {TransparentUpgradeableProxy-upgradeToAndCall}.
   *
   * Requirements:
   *
   * - This contract must be the admin of `proxy`.
   */
  function upgradeAndCall(
    TransparentUpgradeableProxy proxy,
    address implementation,
    bytes memory data
  ) public payable virtual onlyOwner {
    proxy.upgradeToAndCall{ value: msg.value }(implementation, data);
  }
}

Contract ABI

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Deployed Bytecode

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Metadata Hash

d849f96f3086b9f82cdcf665adb8c697ace05638da1c7c16ab2d26293717af67
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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