Contract 0x0946BfE3c543e0B770B7F7e508c8A566947C4278 7

 
Txn Hash Method
Block
From
To
Value
0xfd0edd63255aa7c7660c30020682b561c8c933ac051fbf9542e6d4e694e6b75fSet Path Per Col...45614582023-09-28 14:44:23154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.00005806770.102
0x383db65778e3349ecea467340cdad617b64201a078075092478a836e7b6541bdSet Path Per Col...45614522023-09-28 14:44:11154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000557854420.102
0x010f6e1b42a69f745cbc62ed89e53e022aa22c1651f41a96e4fbc744ca49dfeeNominate New Own...45614132023-09-28 14:42:53154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000398175860.102
0x5e7cbba3ddb5450db6247b4edf0380aee1f148667dfb6461ca7c31bfbc1673d4Set Swap Router45613832023-09-28 14:41:53154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000414007990.102
0x81105ad507624adab92af133306ba251e75c4b669e29315a1d1b652dd1825b0eSet Supported Co...45613792023-09-28 14:41:45154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000424481690.102
0x9cce56a02a2f1123ab5c18f01be0813ef2ea71ffbf44977d4b235c17fe9f6251Set WETH45613732023-09-28 14:41:33154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000406936380.102
0xcf6116b6182e23b9dcbfdeb6a7820cbe6cd813aac4583496e3b3814666889756Set Swap Router45613672023-09-28 14:41:21154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000418757170.102
0xffa765f3141f2a6f648b5e5508c79b23aaaeb88cfa8039480def40c04a741873Set Supported AM...45613622023-09-28 14:41:11154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000468730610.102
0x8ddd9bf4549c1c2be52e1487f93c868f3222eca78096c9d138aeed63f0d43ee2Set Supported AM...45613562023-09-28 14:40:59154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000465007960.102
0x053db5dab54bde0159942da3d377299a2d2c982e9c15a4a1199851e3180cce26Set SUSD45613532023-09-28 14:40:53154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000402586350.102
0x595af37cf0ea2750850d8154334079589d0c2595d230a71d4df7d3f53fcffe32Set Price Feed K...45613452023-09-28 14:40:37154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000403053460.102
0x38eae19192f10df15e01860abebd67601c43bea875a4491e5a53f46a437498a7Set Price Feed45613422023-09-28 14:40:31154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000408076740.102
0xea1967337237c2eaf7c0e41b75fa4046f6ebead55fd228963185f60ec5181847Set Max Allowed ...45613272023-09-28 14:40:01154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000383861880.102
0x19e9221c91482e52efc00968e19e414b2c0ec9f1d18a80fdd7aa367fd73cbe0eSet Manager45612762023-09-28 14:38:19154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000437017650.102
0x2a173ac892281edab2b051956dee659b3a07be38d35a5b9a7352904779345e0a0x6080604045610172023-09-28 14:29:41154 days 10 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  Contract Creation0 ETH0.0015305001551
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x7ab55ede98acae8af813bb80fecb1c782e7ea62b532de41b6f00511f32ba5e75111655872024-02-28 11:42:011 day 13 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.001719132191389302 ETH
0x7ab55ede98acae8af813bb80fecb1c782e7ea62b532de41b6f00511f32ba5e75111655872024-02-28 11:42:011 day 13 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.001719132191389302 ETH
0xddf98c2955f40973675683553cd94ec9a1551a56d9c1c2b2a1d71f630b51a5c8111364052024-02-27 19:29:172 days 5 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278 0xafd339acf24813e8038bfdf19a8d87eb94b4605d0.003094905457478348 ETH
0xddf98c2955f40973675683553cd94ec9a1551a56d9c1c2b2a1d71f630b51a5c8111364052024-02-27 19:29:172 days 5 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.003094905457478348 ETH
0x7905addc9230b2fb99ae5d5ea784014e96a4d09ab12180632a45696e9f6f680b111364012024-02-27 19:29:092 days 5 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278 0xafd339acf24813e8038bfdf19a8d87eb94b4605d0.005339870846950546 ETH
0x7905addc9230b2fb99ae5d5ea784014e96a4d09ab12180632a45696e9f6f680b111364012024-02-27 19:29:092 days 5 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.005339870846950546 ETH
0x108b53a6c6475052c593dda2f89386182a995bfb7e973d67347cdc48b8da9aae111342262024-02-27 18:16:392 days 6 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.003631027487072911 ETH
0x108b53a6c6475052c593dda2f89386182a995bfb7e973d67347cdc48b8da9aae111342262024-02-27 18:16:392 days 6 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.003631027487072911 ETH
0xe7aa9e41d90ed7015fd2e918bc64b4f3513ffbdbb4f401c341dd27c2af8aeb19111242532024-02-27 12:44:132 days 12 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.007132406730065838 ETH
0xe7aa9e41d90ed7015fd2e918bc64b4f3513ffbdbb4f401c341dd27c2af8aeb19111242532024-02-27 12:44:132 days 12 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.007132406730065838 ETH
0xb43a24a82861edca1ea7135b68c0a96abc71bd86985a80618448ec3e14ab5311111048602024-02-27 1:57:472 days 23 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278 0x85b827d133fedc36b844b20f4a198da583b25baa0.012630105918862856 ETH
0xb43a24a82861edca1ea7135b68c0a96abc71bd86985a80618448ec3e14ab5311111048602024-02-27 1:57:472 days 23 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.012630105918862856 ETH
0x8c808c13f852d9a0235e5f76224950a9aa7783c5842f6243eaa0c0eba38200ad111033392024-02-27 1:07:053 days 5 mins ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.007374241261120745 ETH
0x8c808c13f852d9a0235e5f76224950a9aa7783c5842f6243eaa0c0eba38200ad111033392024-02-27 1:07:053 days 5 mins ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.007374241261120745 ETH
0x848cc367af781c7f6d3c984bccd04fd16083d3a164c5e2b8adf54edcce93845a110928042024-02-26 19:15:553 days 5 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.008217542932903481 ETH
0x848cc367af781c7f6d3c984bccd04fd16083d3a164c5e2b8adf54edcce93845a110928042024-02-26 19:15:553 days 5 hrs ago 0xafd339acf24813e8038bfdf19a8d87eb94b4605d 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.008217542932903481 ETH
0xed119877c0adde322d7b30c0b75c288bc2bcbc42035806a7a88481d4c8864798110597602024-02-26 0:54:274 days 17 mins ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.001009833806604452 ETH
0xed119877c0adde322d7b30c0b75c288bc2bcbc42035806a7a88481d4c8864798110597602024-02-26 0:54:274 days 17 mins ago 0xafd339acf24813e8038bfdf19a8d87eb94b4605d 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.001009833806604452 ETH
0x34268f2a4415708525a21a8fc6f961a27074395c9445623004738568ed825162110544042024-02-25 21:55:554 days 3 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.03715430343758077 ETH
0x34268f2a4415708525a21a8fc6f961a27074395c9445623004738568ed825162110544042024-02-25 21:55:554 days 3 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.03715430343758077 ETH
0x863dfcf12c094cdbd8de21e57a8ce844bc3b6e8ec032831f800ccb3dbddf78aa110518152024-02-25 20:29:374 days 4 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278 0x85b827d133fedc36b844b20f4a198da583b25baa0.013092927726504712 ETH
0x863dfcf12c094cdbd8de21e57a8ce844bc3b6e8ec032831f800ccb3dbddf78aa110518152024-02-25 20:29:374 days 4 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.013092927726504712 ETH
0xbc62577db1c1d2821f565259f991226dddc4e8e10472b52c204c92e7e9fffa59110517412024-02-25 20:27:094 days 4 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.013075160059976172 ETH
0xc5b0f042f6f7a032eae6f6d622e7ea301b847ecdb795865adfbb11e318b683af110511622024-02-25 20:07:514 days 5 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.007581049464235003 ETH
0xc5b0f042f6f7a032eae6f6d622e7ea301b847ecdb795865adfbb11e318b683af110511622024-02-25 20:07:514 days 5 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.007581049464235003 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x8c14a40c488e16b055bc4e250563b5480047f01e
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
TransparentUpgradeableProxy

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 basescan.org on 2023-07-19
*/

/**
 *Submitted for verification at Optimistic.Etherscan.io on 2021-11-13
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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 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 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 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 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 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 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();
    }
}

Contract Security Audit

Contract ABI

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Deployed Bytecode

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Swarm Source

ipfs://93f028255035b61df476b13b9dba3c4f06f60e51b9b4caee31680b389aef327f
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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