Contract 0x9a51524422DDF1B8AfEc04CBa6451a6c50320998

 
Txn Hash Method
Block
From
To
Value
0x9251e13d71cad39942ff4524fe8985e3715751f4ee0ced8055f286a23f5ec7d1Resolve Market607885922023-01-06 0:13:22267 days 16 hrs ago0x461783a831e6db52d68ba2f3194f6fd1e0087e04 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000909037230.001
0x111dae9f7295b81085b92c1d997a4d0487774f84e0d573d9b725ad541c68c439Resolve Market607884772023-01-06 0:12:52267 days 16 hrs ago0x461783a831e6db52d68ba2f3194f6fd1e0087e04 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000909038290.001
0xac3a48301e6c1753024371344e23eb954d5dadb3737c3e9405725020b6ded2c7Resolve Market588651232023-01-02 2:33:12271 days 14 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000534250450.001
0xc52890440b7eef928f26fbba5fa7998c13ef03eee141ae881b1796ae85af2d37Resolve Market588236442023-01-01 21:08:58271 days 19 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000635955160.001
0x0b0395c0b123a4a230d48d09c8d1fa5e73b5c4805d61f031e8b754eb56d48ebeResolve Market588138102023-01-01 19:59:18271 days 20 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000608016230.001
0xf2853a408f91442e6684d12e62534244bd4765834c83db7507cc2edb64080bbcResolve Market585266382023-01-01 5:20:38272 days 11 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000739873260.001
0x6c034926b036fd15870f6536e96ed8e08e577f79bb2f7fdc8523fbea66c144b9Resolve Market585198532023-01-01 4:51:20272 days 12 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000562278680.001
0x6f099a1f6986f396a6481c368ecd9e5de0475dd993d6aba498c81a77947d89b6Resolve Market584726632023-01-01 1:06:11272 days 15 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000590506290.001
0x5d5035d9a293bf64317423bce55f037b7a5d78434040dc33c4ea3f885e4ea462Resolve Market584723252023-01-01 1:03:53272 days 15 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000589288590.001
0xf7e341e120604c227891e348daecd0f9374791e217cd5eedf8a07a557de19fabResolve Market584721512023-01-01 1:02:38272 days 15 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000589288380.001
0x23e5f738b9cc589735e970abdfe14251d96a53ac2b913a020928d0512222f3a8Resolve Market584720162023-01-01 1:01:53272 days 15 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000669872350.001
0xde17fef6b65c622e507a55983aed2a21b29f66a8c6b87dc15d9c460a543c3486Resolve Market584717592023-01-01 1:00:23272 days 15 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000593689980.001
0xc8ad4eabb71899331e105732fb1615f440613164f9810ad5fc407db3cdf02fd8Resolve Market584707142023-01-01 0:54:08272 days 16 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000590352730.001
0x5f376e25a8852e883e6175efe1fa7a79ec4745c0c6a4031583c77ada7db45237Resolve Market584633702023-01-01 0:07:51272 days 16 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000626593170.001
0x47610642d4bb08559c41a9194225266a899027e2843fa5ddc64b8d21dbe43e21Resolve Market584631842023-01-01 0:06:19272 days 16 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.000062659240.001
0x79d243b369cf48b3a77d24d17da290f58bbfbdd1fee354fa8b0521edcd11ff2bResolve Market584626062023-01-01 0:02:33272 days 16 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000745540530.001
0xe4a437c515343013633336bb25d2446bb2905b947f88b8df8d047c5421cb33f7Resolve Market584236902022-12-31 20:07:11272 days 20 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000666757860.001
0xcc286236e503879403f7c1fb98ec26237905c1ce314446712afd06ce0ebb4b74Resolve Market584164662022-12-31 19:29:36272 days 21 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000672198530.001
0xfe80ac43ec65045b873369bd153af3585081f644cf745186c04d219ac76d8283Resolve Market584143512022-12-31 19:18:47272 days 21 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000657286010.001
0xc94bf4e1573b00688612901ea9d7c55a756bf4a98e3fb0e33fd00190bc9dfc10Resolve Market520498282022-12-19 23:51:34284 days 17 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000570208240.001
0xf4b17068a9580a01237ac7c57a219f4cc03fc799747a99bd69490458c188bbbcResolve Market520496462022-12-19 23:49:48284 days 17 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000495225560.001
0x32358a93049418d199700b12d95f91410eba84f1b293c5cca1bef343e30857c2Resolve Market516371762022-12-18 23:30:04285 days 17 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000471289280.001
0xda2f2ea2e1704c9500e80b8039f45e4d42781462e3a415396d3dbdfe7946c018Resolve Market516332162022-12-18 22:56:31285 days 17 hrs ago0x461783a831e6db52d68ba2f3194f6fd1e0087e04 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000519995340.0012
0x69b01e41c4fcad76c30c8befb9ddf7bea3bd3e04aa343c3e47f5bffc3736b266Resolve Market516331752022-12-18 22:55:59285 days 17 hrs ago0x461783a831e6db52d68ba2f3194f6fd1e0087e04 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.000052166930.0012
0x6aa0f0490f2c79fb831afc6a2ece3b20786046659cfaa303b9d8e981d0e36345Resolve Market482105592022-12-12 2:44:56292 days 14 hrs ago0x891da613d26ef051eca35ea337428c514d271c98 IN  0x9a51524422ddf1b8afec04cba6451a6c503209980 ETH0.0000519300020.001
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0x5a057e69326caf5b4c8fdac6e4e53d1c1a35db5e83d7adebb3c3ae73a6ed5ed6312075422022-10-24 16:08:59341 days 46 mins ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x017fe05ec100050b7bda958d2693ff683481a6df605da49b0ccbe527628765d6306781022022-10-22 1:01:21343 days 15 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x7b1be2e5eea0d85d0811e31d4fc2b83cf4e24315f8eddf2bc483fd79070080fa306539912022-10-21 20:16:13343 days 20 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x466e9b807e18cad0d71078f47ac2acb3fe48d50df4d9cb8c1cd1104191c7605d306507062022-10-21 19:42:04343 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xcb9f8c51e891f5435635310afd52fd8ece5c7c8a67d33834e6ce34a4896fd7eb306500122022-10-21 19:34:05343 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x66deb8643aabb3ae4e418d61053891cf2e9ceaa407b5685a7de449eed737fba5306477272022-10-21 19:07:08343 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x3172b4fd389bb95be7e95e54a07edd48cc1339ac1eacf153cc65935822c36958302938362022-10-19 20:27:29345 days 20 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x2bdce7e9c89461205324fd7ca64180053688f14d9b358bc1a0b27e774bb72c27299334012022-10-17 19:46:39347 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x0d55dd23b1ac2ab7afe9537551b29056028d92303814d33c414b0f85f8ed2852293747322022-10-14 19:52:20350 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x03ce7542ca56c3714ef492d0a8078bc72e8a82dae29854c28aa0e5483ce49c42293739932022-10-14 19:41:46350 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xcd6fea08e94b1d34c26da84e631c1ce3b0c605c6bad1b550a098a8f821eee022291411092022-10-13 14:06:47352 days 2 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x0370855a31c1dc45c3ca25de4c3315bc6eea543ae54472b0a4bb2c49b49076ad285764132022-10-10 22:51:18354 days 18 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x5b54adc1db410ac6cd98d98ec0cd75a943e1368adb3ccb44d2e1ff476884651a285602692022-10-10 19:57:25354 days 20 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xd6f174429d921f554f5b424531300af05bfc634ad0d9ceca8ce7e62e087f7b22284333132022-10-09 19:59:04355 days 20 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x4dd87eb06a4a583f7067a01b7949c84ff3163402438a749371f0aa3d1f787e19284281212022-10-09 18:56:05355 days 21 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x42b69fbda485a056719fcba47af5b69ed136da3908ad6f555e44cfa2c0442c31283055942022-10-08 21:29:32356 days 19 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x1322983040c2738e4f3f8eaf71f7b2ffaf5fc51af3368fc48d2fb06fffcd967e278308302022-10-06 14:16:44359 days 2 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x56d6bf5e0b699c824970940ebc3e9b2e0ec25be3742f8594f6f5912e24fd8203275998852022-10-05 16:25:45360 days 30 mins ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xe7f969a57c17ba3d5ec393145e1c3fdff59718da788c026d75ca63fe91b7f52b273730702022-10-04 17:42:24360 days 23 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x3a10a479caca10648f11592966d3b03313a8dfd80ee816a48dd647197caac203273719972022-10-04 17:28:28360 days 23 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xffc84bd8b225e9ed321d85b4bb6cfa4c279c2fbd80316a060f483f7b313c13ba272931872022-10-04 8:43:48361 days 8 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x399704db6af0415c13cdea62ffe370bafef7bea8ca71b92bb44f0c63601e97c3272923322022-10-04 8:38:18361 days 8 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0xfa18933d0eb2fff98b5e70af90a61e31a80bb2d7acdec84ee48516086817771f272913302022-10-04 8:31:46361 days 8 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x15d4dcb19b240e08271ae70e9df8f0296724022dcdfda4141e51ed9cffbf730a272194612022-10-03 23:00:33361 days 17 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
0x2e1289d5ad4e984b81c80e2f838c8c61fdfd1f1c8666dab633532646fb5f94ca272178732022-10-03 22:34:51361 days 18 hrs ago 0x9a51524422ddf1b8afec04cba6451a6c50320998  Contract Creation0 ETH
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Similar Match Source Code
This contract matches the deployed ByteCode of the Source Code for Contract 0xf18D727C034f47AE2C0FE221C1cf4A15f0557b5F
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 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

[{"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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Swarm Source

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