Contract 0x0946BfE3c543e0B770B7F7e508c8A566947C4278 7

 
Txn Hash Method
Block
From
To
Value
0xfd0edd63255aa7c7660c30020682b561c8c933ac051fbf9542e6d4e694e6b75fSet Path Per Col...45614582023-09-28 14:44:23208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.00005806770.102
0x383db65778e3349ecea467340cdad617b64201a078075092478a836e7b6541bdSet Path Per Col...45614522023-09-28 14:44:11208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000557854420.102
0x010f6e1b42a69f745cbc62ed89e53e022aa22c1651f41a96e4fbc744ca49dfeeNominate New Own...45614132023-09-28 14:42:53208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000398175860.102
0x5e7cbba3ddb5450db6247b4edf0380aee1f148667dfb6461ca7c31bfbc1673d4Set Swap Router45613832023-09-28 14:41:53208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000414007990.102
0x81105ad507624adab92af133306ba251e75c4b669e29315a1d1b652dd1825b0eSet Supported Co...45613792023-09-28 14:41:45208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000424481690.102
0x9cce56a02a2f1123ab5c18f01be0813ef2ea71ffbf44977d4b235c17fe9f6251Set WETH45613732023-09-28 14:41:33208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000406936380.102
0xcf6116b6182e23b9dcbfdeb6a7820cbe6cd813aac4583496e3b3814666889756Set Swap Router45613672023-09-28 14:41:21208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000418757170.102
0xffa765f3141f2a6f648b5e5508c79b23aaaeb88cfa8039480def40c04a741873Set Supported AM...45613622023-09-28 14:41:11208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000468730610.102
0x8ddd9bf4549c1c2be52e1487f93c868f3222eca78096c9d138aeed63f0d43ee2Set Supported AM...45613562023-09-28 14:40:59208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000465007960.102
0x053db5dab54bde0159942da3d377299a2d2c982e9c15a4a1199851e3180cce26Set SUSD45613532023-09-28 14:40:53208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000402586350.102
0x595af37cf0ea2750850d8154334079589d0c2595d230a71d4df7d3f53fcffe32Set Price Feed K...45613452023-09-28 14:40:37208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000403053460.102
0x38eae19192f10df15e01860abebd67601c43bea875a4491e5a53f46a437498a7Set Price Feed45613422023-09-28 14:40:31208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000408076740.102
0xea1967337237c2eaf7c0e41b75fa4046f6ebead55fd228963185f60ec5181847Set Max Allowed ...45613272023-09-28 14:40:01208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000383861880.102
0x19e9221c91482e52efc00968e19e414b2c0ec9f1d18a80fdd7aa367fd73cbe0eSet Manager45612762023-09-28 14:38:19208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  0x0946bfe3c543e0b770b7f7e508c8a566947c42780 ETH0.0000437017650.102
0x2a173ac892281edab2b051956dee659b3a07be38d35a5b9a7352904779345e0a0x6080604045610172023-09-28 14:29:41208 days 15 hrs ago0x8559027bac39638438ddb32d713f0b12ef66ea7b IN  Contract Creation0 ETH0.0015305001551
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x5477cdd836daf0d9c25bb3ec158f79144f863c2ed75dd761a7886b3247261313135210272024-04-23 0:16:411 day 5 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.001891632609113972 ETH
0x5477cdd836daf0d9c25bb3ec158f79144f863c2ed75dd761a7886b3247261313135210272024-04-23 0:16:411 day 5 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.001891632609113972 ETH
0x1c4ed298197b853d213d5124a65507d0835e37304668bd6203df8080bbf7c358135203842024-04-22 23:55:151 day 6 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.001895489613955091 ETH
0x1c4ed298197b853d213d5124a65507d0835e37304668bd6203df8080bbf7c358135203842024-04-22 23:55:151 day 6 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.001895489613955091 ETH
0x2ec4a46964e5c41f5e3f2caed991a3d28f17f709da613e572bf9837d9ba276fc135169552024-04-22 22:00:571 day 8 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.00816 ETH
0x2ec4a46964e5c41f5e3f2caed991a3d28f17f709da613e572bf9837d9ba276fc135169552024-04-22 22:00:571 day 8 hrs ago 0x6848f001dddb4442d352c495c7b4a231e3889b70 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.00816 ETH
0x4d516b005f0290294ae7fd26811449b7e90c1e9997242b2e9e6f83511d19a936135168522024-04-22 21:57:311 day 8 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.00816 ETH
0x4d516b005f0290294ae7fd26811449b7e90c1e9997242b2e9e6f83511d19a936135168522024-04-22 21:57:311 day 8 hrs ago 0x6848f001dddb4442d352c495c7b4a231e3889b70 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.00816 ETH
0xc3c882352c1f79a24997ae158b803f1a9b4e80f7b5072b0f7be2a69f6cdaddfc134674502024-04-21 18:30:472 days 11 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.989995748894597184 ETH
0xc3c882352c1f79a24997ae158b803f1a9b4e80f7b5072b0f7be2a69f6cdaddfc134674502024-04-21 18:30:472 days 11 hrs ago 0xafd339acf24813e8038bfdf19a8d87eb94b4605d 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.989995748894597184 ETH
0x83d0320ba210703ca7470097f199a8a119c6ed4d203c59e1ffa9c91992fd52f7134674382024-04-21 18:30:232 days 11 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.52999689508676726 ETH
0x83d0320ba210703ca7470097f199a8a119c6ed4d203c59e1ffa9c91992fd52f7134674382024-04-21 18:30:232 days 11 hrs ago 0xafd339acf24813e8038bfdf19a8d87eb94b4605d 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.52999689508676726 ETH
0x0a2c5bb200b846536034b0b74d3ad66be0901d4d2df283a9a062e9b1933eb6a6134660522024-04-21 17:44:112 days 12 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278 0x5625c3233b52206a5f23c5fc1ce16f6a7e3874dd1.527916738678354322 ETH
0x0a2c5bb200b846536034b0b74d3ad66be0901d4d2df283a9a062e9b1933eb6a6134660522024-04-21 17:44:112 days 12 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42781.527916738678354322 ETH
0xc4573e5c2f66668e6a6a1d345b5f289d274f7d478ba614ab33222a68df7c9adc134638222024-04-21 16:29:512 days 13 hrs ago Wrapped Ether 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.308305396256317153 ETH
0x9861ee089160bcd63b147ffa54cc10a162916d6e23417969fdc3d562a80ca991134551202024-04-21 11:39:472 days 18 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.150000359442009295 ETH
0x9861ee089160bcd63b147ffa54cc10a162916d6e23417969fdc3d562a80ca991134551202024-04-21 11:39:472 days 18 hrs ago 0xafd339acf24813e8038bfdf19a8d87eb94b4605d 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.150000359442009295 ETH
0x84bc715fbf5c5dcbb67914597c700bfa667089db6e33ad81c3cfcf3686814220134551112024-04-21 11:39:292 days 18 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.47 ETH
0x84bc715fbf5c5dcbb67914597c700bfa667089db6e33ad81c3cfcf3686814220134551112024-04-21 11:39:292 days 18 hrs ago 0x5625c3233b52206a5f23c5fc1ce16f6a7e3874dd 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.47 ETH
0x4529be027b3778b85d04facbb034fb7a8071a02f8ab8575fbd8d62c413db4a0d134375782024-04-21 1:55:033 days 4 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.007597914303232712 ETH
0x4529be027b3778b85d04facbb034fb7a8071a02f8ab8575fbd8d62c413db4a0d134375782024-04-21 1:55:033 days 4 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.007597914303232712 ETH
0x81c64e4b8f665c31b02dc0f01d948971f4db90bfb21e37b1465e6e2a94c32194134373612024-04-21 1:47:493 days 4 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.007584575446024961 ETH
0x81c64e4b8f665c31b02dc0f01d948971f4db90bfb21e37b1465e6e2a94c32194134373612024-04-21 1:47:493 days 4 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.007584575446024961 ETH
0xabb7d0d75536d4cfa58939a11c6709d0c837727bcdebe30209d825cb454c12c2134365592024-04-21 1:21:053 days 4 hrs ago 0x0946bfe3c543e0b770b7f7e508c8a566947c4278Wrapped Ether0.00765591616644623 ETH
0xabb7d0d75536d4cfa58939a11c6709d0c837727bcdebe30209d825cb454c12c2134365592024-04-21 1:21:053 days 4 hrs ago 0x85b827d133fedc36b844b20f4a198da583b25baa 0x0946bfe3c543e0b770b7f7e508c8a566947c42780.00765591616644623 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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