Contract 0x3826367A5563eCE9C164eFf9701146d96cC70AD9 2

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xc13175fac9a53b4b9d809112543cb4b43dc737b8e7a68df6ed4dcb4bc7a16764Set Approval For...364439302022-12-05 6:09:332 days 21 hrs ago0x243ad7a1909ff7ed5107f7d01331e62329d98c65 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00187691508 34.92
0xba219d8b28b0543b4cdbfe314c50d10de240df057d496ce0e64839ec4844a31cSet Approval For...362931702022-12-01 12:02:156 days 15 hrs ago0x26fdc242eccc144971e558ff458a4ec21b75d4e8 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.000978066627 30.640225175
0x4f14bbb799420098d673b92c8d9475ec6eeb416bd89ffc5f4def8f17f428e1a9Set Approval For...362563262022-11-30 14:25:497 days 13 hrs ago0x24621aa4dde07f04c57146d83468969010b7489e IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.003424209723 107.271380075
0x591b61ed5d451da32988ef9e5028ec2a876339b150c16dc32121a767b297d5c4Set Approval For...362130272022-11-29 12:37:538 days 15 hrs ago0xa22717887a258a6792ed5ec7ecccd9d64c0131b3 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00181949757
0xda1def099a4ac636809ce3ffff9a63e3ce021f56d900ab13878c9c1817386b8bSet Approval For...361729262022-11-28 12:48:469 days 14 hrs ago0x1d88f5a58624688627fccd370dc8eac3a700c138 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.0014482983 45.371332354
0x4ef5e105d5c922ac0bcdc5e821ce9ee0b8697f28282ccc09f434eac6216ac0f8Set Approval For...361334062022-11-27 13:32:2110 days 14 hrs ago0x6942d7d7a3d0d80058c57c6ca694e41b93fdc2c0 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001023378731 32.059732838
0xcef1414fb0fbfda3bde3f341e2ce53406bf6ac57e5a4ae39765694e2ce1cafb2Set Approval For...360489312022-11-25 12:27:3612 days 15 hrs ago0x3b6eaec241d8ef5c9cc1ed944179877196ed194d IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001567979596 49.120628933
0xcc60adee6c7ddabde3f724602b7e194e4bd545443520ec295395233017a3d951Set Approval For...360489272022-11-25 12:27:2812 days 15 hrs ago0x3b6eaec241d8ef5c9cc1ed944179877196ed194d IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001540609955 48.263210901
0xfa4c79ef73f235d2dcae71ef2df4147ae2f43bd33a905ff2f62b7825788814bdSet Approval For...356348542022-11-15 11:11:3822 days 16 hrs ago0x52b572e36db2d6e07f3d07a88f50695781dafa98 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001201174286 37.629594525
0xb5b5725916ca05ed3371a7a7abbbefe971007537dc5a4e91eae619bbfb086610Set Approval For...355957712022-11-14 12:22:0523 days 15 hrs ago0x3aef315b67c2e23aae9e9c1174d05371e2c9b144 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001098290114 34.406507153
0x084d113cf22fec17d2cb3cfdff95a4c8b95bd42b666f45f4ed8c0b6bf214eaebSet Approval For...355525012022-11-13 11:19:3924 days 16 hrs ago0x2a359d816be088f64aac876ed7e9babe18a2ae24 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001140620037 35.732591018
0x443d716ea35bc48a960dea37a9cd6d22cbc5f46f9bd1c3c531ec1d96fa5cd310Set Approval For...355525002022-11-13 11:19:3724 days 16 hrs ago0x2a359d816be088f64aac876ed7e9babe18a2ae24 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001177370766 36.883893579
0xcdeb64abb0004b2b14c5a11682f02dec9c2ac5418232499deb9502b041dee4d3Set Approval For...354359822022-11-10 11:52:4227 days 15 hrs ago0xd09791b9c95e78010c148bed79b763fb4ee31111 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00405849452275.390457947
0x896eee14e0ae2fa56939cb78cc770afe2fbbc4dc8e6944d7883f140083e450ecSet Approval For...352418532022-11-05 18:39:4132 days 9 hrs ago0xd7b24895818db555cee8af8aadeed547555b514a IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.002583930589 80.947670479
0xa7cd0ed8bcd7dc606e90644b3be0b2b4a140ff29a9da6feeffc0cd896d901edaSet Approval For...351611732022-11-03 19:35:2334 days 8 hrs ago0xd18992db12494f18f0fd2e4a05c1596aced9131e IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00278152282
0x4e9e880e67240a62ae7856cb696acadc6fd18d2e7e4640d9205492ca4ef6ba68Set Approval For...351611722022-11-03 19:35:2134 days 8 hrs ago0xd18992db12494f18f0fd2e4a05c1596aced9131e IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00261752282
0xd09e0f388962e84f207edc287df7772a6e87e2d09ee8c8e237454828a04b21f8Set Approval For...351611122022-11-03 19:33:1734 days 8 hrs ago0xd18992db12494f18f0fd2e4a05c1596aced9131e IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00261752282
0x9a9c1696ef50662bd60fbc82055cba65b9b87c360c0e8362c1e15575597e9f30Set Approval For...349789712022-10-30 8:05:5638 days 19 hrs ago0xd99d383ff00a24a5af94b64c09570b8d8fb7aa0f IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.000990838021 31.040318973
0x47af11930d2d93350399448cd6f5be217783f9c34d623c016bc363a211a2b242Set Approval For...347689392022-10-25 4:50:4843 days 22 hrs ago0x55a1438b4b666c4359909ac902c41be09c3b821a IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.002233361492 69.965273414
0xdac1ac903964e5cd84056145a6260683a4f379088a0fdb0d04b084b07ba8abf6Set Approval For...339323062022-10-04 19:33:1764 days 8 hrs ago0x4f05f428797eaa6ca6981bd7ca4a6240895e4004 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001616232429 30.069999999
0xf17053c5acec5dc60beb6abc36f03ae5693f12982426588ea6ada2e41bdb2e21Set Approval For...339006462022-10-04 1:20:3765 days 2 hrs ago0xe9fbc77427074635331abcf9e57b47dbfdc3edf2 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001238534799 38.799999996
0xf2a2da178284120acfddc1947499be8d3de44813d6a89f00805d44ffad71b5b8Set Approval For...338991122022-10-04 0:27:5365 days 3 hrs ago0xbaab83de8dba764bf02a530cad33555bd23eba22 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00095763 30.000000014
0x0ec8559035cdebee3439b6bd564cdc8d9fe9f3351272efd4a9b0b50ebed49658Set Approval For...332238602022-09-17 15:20:3881 days 12 hrs ago0x2f75ffe98046e4a55fa79daf97b2730d7e707186 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00095763 30.000000015
0x76e3b0d0730848b946f224a0d6481b768d5f7428946d864cabecc744d066ea84Set Approval For...329354672022-09-10 16:25:5188 days 11 hrs ago0x4a27bfd91b30efaf08706d2105e5d8a1ad09ff0c IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.0026916550
0xfc354c5a1959e5f482467743d7e48ffbf5fdc6019ba962c970efc85294f02305Set Approval For...326331972022-09-03 9:28:4995 days 18 hrs ago0x17ddafa86afb8f32b7d23499afbbd8a68f09febf IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001616232429 30.069999998
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x2bc74529c326bcd6629fe377454c72475483501fac7cb849ea3a17a8544a0dee348644052022-10-27 13:28:0341 days 14 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token4 MATIC
0x2bc74529c326bcd6629fe377454c72475483501fac7cb849ea3a17a8544a0dee348644052022-10-27 13:28:0341 days 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad94 MATIC
0xa463eb4d53d3ada23938abc91ff07eb417bc3b3c79ff3565678c9a1186307a5c340568972022-10-07 19:43:5261 days 8 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token5.5 MATIC
0xa463eb4d53d3ada23938abc91ff07eb417bc3b3c79ff3565678c9a1186307a5c340568972022-10-07 19:43:5261 days 8 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad95.5 MATIC
0x187770fb1cb7b61294769ec7b8c8735cd7e6180af1a1f1efbbb61ea78e94fe38308946592022-07-19 10:44:33141 days 17 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0x187770fb1cb7b61294769ec7b8c8735cd7e6180af1a1f1efbbb61ea78e94fe38308946592022-07-19 10:44:33141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x1eac3bd1aa9a164ab01aba7b28ad78045ab4141329e3573a51554fefd9018d92308935882022-07-19 10:01:19141 days 17 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0x1eac3bd1aa9a164ab01aba7b28ad78045ab4141329e3573a51554fefd9018d92308935882022-07-19 10:01:19141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x130a127d9bed3111b46a3cbb10b1aeee93bb8bfa49e88b4e780b1cca91c75367308934822022-07-19 9:56:15141 days 17 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0x130a127d9bed3111b46a3cbb10b1aeee93bb8bfa49e88b4e780b1cca91c75367308934822022-07-19 9:56:15141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x41643810038595b5d805e60403025202241b75489bdafc969c2389415e3264b5308899742022-07-19 7:44:05141 days 20 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0x41643810038595b5d805e60403025202241b75489bdafc969c2389415e3264b5308899742022-07-19 7:44:05141 days 20 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x506549d9cec44fd60b44765d8bbca529f460b1b52cc94cf50c0cb6f0748ab7ae284624572022-05-18 8:54:29203 days 18 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.01 MATIC
0x506549d9cec44fd60b44765d8bbca529f460b1b52cc94cf50c0cb6f0748ab7ae284624572022-05-18 8:54:29203 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.01 MATIC
0x7fea13dbe6df11c6c4c5b76902d02108e45e2e8c709246eef7a7437b47afea3d283834132022-05-16 9:18:04205 days 18 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.1 MATIC
0x7fea13dbe6df11c6c4c5b76902d02108e45e2e8c709246eef7a7437b47afea3d283834132022-05-16 9:18:04205 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.1 MATIC
0xc4c14b7d6f0a161ab105fe2277306e3cf26cf1702263781f40b24edd17645e0a267566072022-04-05 2:28:08247 days 1 hr ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token37.99343391290947 MATIC
0xc4c14b7d6f0a161ab105fe2277306e3cf26cf1702263781f40b24edd17645e0a267566072022-04-05 2:28:08247 days 1 hr ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad937.99343391290947 MATIC
0x7c7ade2494e20338fd56abb37b206da444060d53a407d3b2b2f93e1487bf9666249478752022-02-14 22:45:14296 days 5 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token65.42121279999999 MATIC
0x7c7ade2494e20338fd56abb37b206da444060d53a407d3b2b2f93e1487bf9666249478752022-02-14 22:45:14296 days 5 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad965.42121279999999 MATIC
0x646ea07db0502fe2ba7a9d9a1aa3b43c8e66874447ca58ffc387c3f11f8b6ee7242118952022-01-27 4:19:55314 days 23 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token65 MATIC
0x646ea07db0502fe2ba7a9d9a1aa3b43c8e66874447ca58ffc387c3f11f8b6ee7242118952022-01-27 4:19:55314 days 23 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad965 MATIC
0x2958c05246aca044fd9ab9047bdb0e086cdd304d6e0ac3ee3030cec8fee4e3f2237477002022-01-15 12:59:52326 days 14 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token10 MATIC
0x2958c05246aca044fd9ab9047bdb0e086cdd304d6e0ac3ee3030cec8fee4e3f2237477002022-01-15 12:59:52326 days 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad910 MATIC
0x22d70e0a9839cb26540147421423b6172c529a3142a45bdab93ff22dc3fe09fd231013792021-12-29 11:27:00343 days 16 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token5 MATIC
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x5841565Bd231a868e47347d9749eF06AF5cA0970

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

/**
 *Submitted for verification at polygonscan.com on 2021-06-12
*/

// 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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Deployed ByteCode Sourcemap

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Swarm Source

ipfs://93f028255035b61df476b13b9dba3c4f06f60e51b9b4caee31680b389aef327f
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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