Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

Outline

•    - function _delegate(address implementa ...
•    - function _implementation()
•    - function _fallback()
•    - function _beforeFallback()
•    - function _getImplementation()
•    - function _setImplementation(address n ...
•    - function _upgradeTo(address newImplem ...
•    - function _upgradeToAndCall(address ne ...
•    - function _upgradeToAndCallSecure(addr ...
•    - function _upgradeBeaconToAndCall(addr ...
•    - function _getAdmin()
•    - function _setAdmin(address newAdmin)
•    - function _changeAdmin(address newAdmi ...
•    - function _getBeacon()
•    - function _setBeacon(address newBeacon ...
•  contract ERC1967Proxy is Proxy, ER ...
•    - function _implementation()
• interface IBeacon
•    - function implementation()
• library Address
•    - function isContract(address account)
•    - function sendValue(address payable re ...
•    - function functionCall(address target, ...
•    - function functionCall(address target, ...
•    - function functionCallWithValue(addres ...
•    - function functionCallWithValue(addres ...
•    - function functionStaticCall(address t ...
•    - function functionStaticCall(address t ...
•    - function functionDelegateCall(address ...
•    - function functionDelegateCall(address ...
•    - function _verifyCallResult(bool succe ...
• library StorageSlot
•    - function getAddressSlot(bytes32 slot)
•    - function getBooleanSlot(bytes32 slot)
•    - function getBytes32Slot(bytes32 slot)
•    - function getUint256Slot(bytes32 slot)
•  contract TransparentUpgradeablePro ... *
•    - function admin()
•    - function implementation()
•    - function changeAdmin(address newAdmin ...
•    - function upgradeTo(address newImpleme ...
•    - function upgradeToAndCall(address new ...
•    - function _admin()
•    - function _beforeFallback()

More Options

• Is this a proxy?
• Similar
• Submit Audit
• Compare

/**
 *Submitted for verification at ftmscan.com on 2021-09-12
*/

// 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 {
    }
}

/**
 * @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;
    }
}

/**
 * @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();
    }
}

/**
 * @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);
}



/**
 * @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);
            }
        }
    }
}




/**
 * @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
        }
    }
}

/**
 * @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();
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"admin_","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"implementation_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

23515:3618:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2908:11;:9;:11::i;:::-;23515:3618;;2676:11;:9;:11::i;25946:136::-;;;;;;;;;;-1:-1:-1;25946:136:0;;;;;:::i;:::-;;:::i;26467:166::-;;;;;;:::i;:::-;;:::i;25329:131::-;;;;;;;;;;;;;:::i;:::-;;;-1:-1:-1;;;;;1556:32:1;;;1538:51;;1526:2;1511:18;25329:131:0;;;;;;;25674:105;;;;;;;;;;-1:-1:-1;25674:105:0;;;;;:::i;:::-;;:::i;24760:98::-;;;;;;;;;;;;;:::i;2312:113::-;2361:17;:15;:17::i;:::-;2389:28;2399:17;:15;:17::i;:::-;2389:9;:28::i;:::-;2312:113::o;25946:136::-;24215:11;:9;:11::i;:::-;-1:-1:-1;;;;;24201:25:0;:10;-1:-1:-1;;;;;24201:25:0;;24197:103;;;26020:54:::1;26038:17;26057:9;;;;;;;;;;;::::0;26068:5:::1;26020:17;:54::i;:::-;24197:103:::0;;;24277:11;:9;:11::i;:::-;25946:136;:::o;26467:166::-;24215:11;:9;:11::i;:::-;-1:-1:-1;;;;;24201:25:0;:10;-1:-1:-1;;;;;24201:25:0;;24197:103;;;26577:48:::1;26595:17;26614:4;;26577:48;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;::::0;::::1;::::0;;;;-1:-1:-1;26620:4:0::1;::::0;-1:-1:-1;26577:17:0::1;::::0;-1:-1:-1;;26577:48:0:i:1;:::-;24197:103:::0;;;24277:11;:9;:11::i;:::-;26467:166;;;:::o;25329:131::-;25381:23;24215:11;:9;:11::i;:::-;-1:-1:-1;;;;;24201:25:0;:10;-1:-1:-1;;;;;24201:25:0;;24197:103;;;25435:17:::1;:15;:17::i;:::-;25417:35;;24197:103:::0;;;24277:11;:9;:11::i;:::-;25329:131;:::o;25674:105::-;24215:11;:9;:11::i;:::-;-1:-1:-1;;;;;24201:25:0;:10;-1:-1:-1;;;;;24201:25:0;;24197:103;;;25749:22:::1;25762:8;25749:12;:22::i;24760:98::-:0;24803:14;24215:11;:9;:11::i;:::-;-1:-1:-1;;;;;24201:25:0;:10;-1:-1:-1;;;;;24201:25:0;;24197:103;;;24839:11:::1;:9;:11::i;18012:200::-:0;18095:12;18127:77;18148:6;18156:4;18127:77;;;;;;;;;;;;;;;;;:20;:77::i;:::-;18120:84;18012:200;-1:-1:-1;;;18012:200:0:o;12327:422::-;12694:20;;12733:8;;12327:422;;;;:::o;26920:210::-;27006:11;:9;:11::i;:::-;-1:-1:-1;;;;;26992:25:0;:10;-1:-1:-1;;;;;26992:25:0;;;26984:104;;;;-1:-1:-1;;;26984:104:0;;3727:2:1;26984:104:0;;;3709:21:1;3766:2;3746:18;;;3739:30;3805:34;3785:18;;;3778:62;3876:34;3856:18;;;3849:62;-1:-1:-1;;;3927:19:1;;;3920:33;3970:19;;26984:104:0;;;;;;;;;27099:23;2312:113;11148:142;11215:12;11247:35;:33;:35::i;:::-;11240:42;;11148:142;:::o;905:915::-;1305:14;1302:1;1299;1286:34;1523:1;1520;1504:14;1501:1;1485:14;1478:5;1465:60;1602:16;1599:1;1596;1581:38;1642:6;1711:38;;;;1783:16;1780:1;1773:27;1711:38;1730:16;1727:1;1720:27;8215:124;8259:7;7939:66;8286:39;:45;-1:-1:-1;;;;;8286:45:0;;-1:-1:-1;8215:124:0;:::o;5220:321::-;5329:37;5348:17;5329:18;:37::i;:::-;5382:27;;-1:-1:-1;;;;;5382:27:0;;;;;;;;5438:1;5424:4;:11;:15;:28;;;;5443:9;5424:28;5420:114;;;5469:53;5498:17;5517:4;5469:28;:53::i;:::-;;5220:321;;;:::o;8748:138::-;8813:35;8826:11;:9;:11::i;:::-;8813:35;;;-1:-1:-1;;;;;1830:15:1;;;1812:34;;1882:15;;;1877:2;1862:18;;1855:43;1747:18;8813:35:0;;;;;;;8859:19;8869:8;8859:9;:19::i;18406:423::-;18517:12;18550:18;18561:6;18550:10;:18::i;:::-;18542:69;;;;-1:-1:-1;;;18542:69:0;;3320:2:1;18542:69:0;;;3302:21:1;3359:2;3339:18;;;3332:30;3398:34;3378:18;;;3371:62;-1:-1:-1;;;3449:18:1;;;3442:36;3495:19;;18542:69:0;3292:228:1;18542:69:0;18685:12;18699:23;18726:6;-1:-1:-1;;;;;18726:19:0;18746:4;18726:25;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;18684:67;;;;18769:52;18787:7;18796:10;18808:12;18769:17;:52::i;:::-;18762:59;18406:423;-1:-1:-1;;;;;;18406:423:0:o;4311:142::-;4364:7;4030:66;4391:48;21226:40;4549:262;4631:37;4650:17;4631:18;:37::i;:::-;4623:95;;;;-1:-1:-1;;;4623:95:0;;2906:2:1;4623:95:0;;;2888:21:1;2945:2;2925:18;;;2918:30;2984:34;2964:18;;;2957:62;-1:-1:-1;;;3035:18:1;;;3028:43;3088:19;;4623:95:0;2878:235:1;4623:95:0;4786:17;4030:66;4729:48;:74;;-1:-1:-1;;;;;;4729:74:0;-1:-1:-1;;;;;4729:74:0;;;;;;;;;;-1:-1:-1;4549:262:0:o;8426:204::-;-1:-1:-1;;;;;8490:22:0;;8482:73;;;;-1:-1:-1;;;8482:73:0;;2499:2:1;8482:73:0;;;2481:21:1;2538:2;2518:18;;;2511:30;2577:34;2557:18;;;2550:62;-1:-1:-1;;;2628:18:1;;;2621:36;2674:19;;8482:73:0;2471:228:1;8482:73:0;8614:8;7939:66;8566:39;21226:40;18837:742;18952:12;18981:7;18977:595;;;-1:-1:-1;19012:10:0;19005:17;;18977:595;19126:17;;:21;19122:439;;19389:10;19383:17;19450:15;19437:10;19433:2;19429:19;19422:44;19337:148;19532:12;19525:20;;-1:-1:-1;;;19525:20:0;;;;;;;;:::i;14:173:1:-;82:20;;-1:-1:-1;;;;;131:31:1;;121:42;;111:2;;177:1;174;167:12;192:196;;304:2;292:9;283:7;279:23;275:32;272:2;;;325:6;317;310:22;272:2;353:29;372:9;353:29;:::i;393:715::-;;;;541:2;529:9;520:7;516:23;512:32;509:2;;;562:6;554;547:22;509:2;590:29;609:9;590:29;:::i;:::-;580:39;;670:2;659:9;655:18;642:32;693:18;734:2;726:6;723:14;720:2;;;755:6;747;740:22;720:2;798:6;787:9;783:22;773:32;;843:7;836:4;832:2;828:13;824:27;814:2;;870:6;862;855:22;814:2;915;902:16;941:2;933:6;930:14;927:2;;;962:6;954;947:22;927:2;1012:7;1007:2;998:6;994:2;990:15;986:24;983:37;980:2;;;1038:6;1030;1023:22;980:2;1074;1070;1066:11;1056:21;;1096:6;1086:16;;;;;499:609;;;;;:::o;1113:274::-;;1280:6;1274:13;1296:53;1342:6;1337:3;1330:4;1322:6;1318:17;1296:53;:::i;:::-;1365:16;;;;;1250:137;-1:-1:-1;;1250:137:1:o;1909:383::-;;2058:2;2047:9;2040:21;2090:6;2084:13;2133:6;2128:2;2117:9;2113:18;2106:34;2149:66;2208:6;2203:2;2192:9;2188:18;2183:2;2175:6;2171:15;2149:66;:::i;:::-;2276:2;2255:15;-1:-1:-1;;2251:29:1;2236:45;;;;2283:2;2232:54;;2030:262;-1:-1:-1;;2030:262:1:o;4000:258::-;4072:1;4082:113;4096:6;4093:1;4090:13;4082:113;;;4172:11;;;4166:18;4153:11;;;4146:39;4118:2;4111:10;4082:113;;;4213:6;4210:1;4207:13;4204:2;;;-1:-1:-1;;4248:1:1;4230:16;;4223:27;4053:205::o

ipfs://93f028255035b61df476b13b9dba3c4f06f60e51b9b4caee31680b389aef327f