Contract 0x3826367A5563eCE9C164eFf9701146d96cC70AD9 1

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xb15bd0215a61594a78f43cca97edbd85225d702776d324aa1d2fe5ff6f263d45Set Approval For...222225802021-12-07 2:07:111 hr 46 mins ago0x34693cbdbb271ed31c0a0fa2546a7f1453183e60 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00101799
0x3f7ec6e21da787815be11507b3a8988181c0843dd4371486c39d5447ab1535bcSet Approval For...222225802021-12-07 2:07:111 hr 46 mins ago0x34693cbdbb271ed31c0a0fa2546a7f1453183e60 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xf0074eb9505fc56a6adbfe0ae9de93940591b918842ddec123bc9eff2154993aSet Approval For...222221772021-12-07 1:51:132 hrs 2 mins ago0xf5e3bd27c6ff34d0b5b4e6af39fe169a558014e2 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x602960a9cb19e842cc394f54e48b2d70206ce95c5a7d64c6c9391fb38a781a9eSet Approval For...222178502021-12-06 23:01:044 hrs 52 mins ago0x196b473f7d74820029e269a98baf3517c463fa89 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xcb34d9eb7f8295baf90c7319d64cdb43581e4af2f587f6085bb75b7562235aadSet Approval For...222175722021-12-06 22:49:245 hrs 4 mins ago0x664895a45298e2e76350866bc730cf6ceab12ed8 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00101799
0x16d920809722b6eb80033b0310e3f6889531f32918a7eb0ccbad07950c359108Set Approval For...222175702021-12-06 22:49:205 hrs 4 mins ago0x664895a45298e2e76350866bc730cf6ceab12ed8 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xcfb728ca3914378e1384154c8fe14fc474cb8ab17d464736aa35a5e3a29eb245Set Approval For...222168612021-12-06 22:22:475 hrs 31 mins ago0x44265dae5c21110b0dfdd421503ce3e1ca3280a5 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00322998
0xa5566461c9abf4a07afd0836f46117ce8a2c660ea0c572029e03ad358ac625f4Set Approval For...222098482021-12-06 18:00:559 hrs 53 mins ago0xc67a9456d244493530c3a496f937b4b1d71ee56c IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xce2569083ba3385cff4c2b1c74ac3f15cc512b4f4324152518f3c7f83b722230Set Approval For...222078682021-12-06 16:47:0811 hrs 6 mins ago0x2f67d476b14df3f2908cb30876625f0d2d05e64c IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00269165
0x948eb8d8198d146c48e174d2daf46b4baeb1e405e91fcdad6add4edf76833983Set Approval For...222051832021-12-06 15:08:1912 hrs 45 mins ago0xdc97dee77a522315f288db3197a0802fb673a279 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00169665
0xc47516c7339c114389c8c2f41b29347de69182aad4043c8a331fa79ed5fcaf37Set Approval For...222051832021-12-06 15:08:1912 hrs 45 mins ago0xdc97dee77a522315f288db3197a0802fb673a279 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.000484497
0x7babb07624a9c9989d507c64446de78416a9507341d7699322f4bad9920ac5a5Set Approval For...222047922021-12-06 14:52:4513 hrs 1 min ago0x10bb8ab9aed0a46b788fc50a6066d28c39f214fe IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xc43d05a29170824b75c141f4f186dd3b6908ae54ccef352a1ae280ebf408575aSet Approval For...222038862021-12-06 14:17:2113 hrs 36 mins ago0xfd5bc91f691ec6aafa609816f8da189c8bd18a00 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.000807495
0x562e94f53ee9b8fd8b02baf151605d3980706e9c85fbb13cd195636fccde259dSet Approval For...222028652021-12-06 13:40:0714 hrs 13 mins ago0x0aff5e01193d502cf88797f5dcabc1d881be62ed IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001668823
0x075631e1b8222d1748bf18848ac2e94c651209916e6967dd932dfa3dc104cf29Set Approval For...222027852021-12-06 13:37:2314 hrs 16 mins ago0xaf06a05e620747589f6bedae54a745671d517b59 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001776489
0x932d14a31929a510feb0843ea30549b25ad3b2d2d8ef444c55be12574562baffSet Approval For...222004072021-12-06 11:59:1315 hrs 54 mins ago0xa2b4ed6f4c47bc5b1cecfc6b402ac5d189e868ca IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xdc377cc4f6f2315f63bf601fe02f3c5174e5eb87fda3783d0a3f399f0cde2d1bSet Approval For...221969052021-12-06 9:35:0518 hrs 18 mins ago0xa686b0a5de98f4554aa7cce247475d54c509229c IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x56c3e56e46524d09b4bda2f1477b1a64723f43675fc1959097035c29ece832d9Set Approval For...221962032021-12-06 9:06:4118 hrs 47 mins ago0x17c066104ba8097de064bb377035b231223d16aa IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x566d4e1a9edbe5a371661ed253e2d1a9676a44d0f064b6160d6c291efcdaed9dSet Approval For...221960312021-12-06 9:00:4518 hrs 53 mins ago0x2ca50d4fa4be631ebf96c4c9dc1f11812e6e4ef2 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.001776489
0xeb78b24b32efe17dd711fc0a606a5bf0ad0a11313af4c92ddaa68ae949845f56Set Approval For...221955602021-12-06 8:40:1919 hrs 13 mins ago0xd42f7148d63e567126f3f436b745c3ada2f2afa6 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0xac31814c1ce413c56bc014bc25d8becb0a602d08c25a94639431e0886d5536b7Set Approval For...221924962021-12-06 6:43:3921 hrs 10 mins ago0x9bdbdb4a8f7f816c87a67f5281484ed902c6b942 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00324882155
0x15b5cbcf2ded4c509e4cda4672a9e9136632152570f499dec52e8c4a90eae71cSet Approval For...221881862021-12-06 4:04:4823 hrs 49 mins ago0xf398c8a66b1f96d6ccb7c39a57f0b32f0104d18a IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x164b99b8409d6f5e1e1ecd74e1b357591fd03bb8dd37a9adc8c0ca898648b168Set Approval For...221876352021-12-06 3:45:501 day 8 mins ago0x60ea14f99df666c489e99f6d254bd6263ea82b83 IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x79244ea45d803758ddb1cd3a10adb874de30500eeaf7c444354adcc5fd344098Set Approval For...221838662021-12-06 1:23:281 day 2 hrs ago0x80e1771f94ccb3960546c8c8661fbdcc90f957df IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.00161499
0x6226f5dee608ddce66a5e07673732ccae051926c36552841ff0f0aec67c19a15Set Approval For...221786192021-12-05 21:58:271 day 5 hrs ago0xf136e84ac506b8776c0b511db40b53a85f4c5f7c IN  0x3826367a5563ece9c164eff9701146d96cc70ad90 MATIC0.000107666
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0x98b517bc47475826d459271660f4afa8ac869e33c7dc193cbdc6ad4499bbead3222248552021-12-07 3:30:0123 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.9 MATIC
0x98b517bc47475826d459271660f4afa8ac869e33c7dc193cbdc6ad4499bbead3222248552021-12-07 3:30:0123 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.9 MATIC
0xf0757ac5bc80d140dd57b9a7d9fb0e43c2687ae2b2051cc11f08c3fa58c57759222246382021-12-07 3:22:3131 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0xf0757ac5bc80d140dd57b9a7d9fb0e43c2687ae2b2051cc11f08c3fa58c57759222246382021-12-07 3:22:3131 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0xe5b241b72ff298819cf83d1ea5ff15fc64afa731cb1ceb28714ebc01a2871871222222802021-12-07 1:54:471 hr 59 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0xe5b241b72ff298819cf83d1ea5ff15fc64afa731cb1ceb28714ebc01a2871871222222802021-12-07 1:54:471 hr 59 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x68d73f60fc902e7347421105d7b51c7af176522de9773aa8ede07e2b0466d88d222222562021-12-07 1:53:552 hrs ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token1 MATIC
0x68d73f60fc902e7347421105d7b51c7af176522de9773aa8ede07e2b0466d88d222222562021-12-07 1:53:552 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x496e52bf4172a0861814f94af970b1d27c696e005bd177d2444864f81ac55726222183002021-12-06 23:20:484 hrs 33 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.5 MATIC
0x496e52bf4172a0861814f94af970b1d27c696e005bd177d2444864f81ac55726222183002021-12-06 23:20:484 hrs 33 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.5 MATIC
0x5cb7465682e69bf9040279f8133c38ea1d1f8cbef75d871b4e21fd2123a5f99f222124542021-12-06 19:37:598 hrs 15 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token2 MATIC
0x5cb7465682e69bf9040279f8133c38ea1d1f8cbef75d871b4e21fd2123a5f99f222124542021-12-06 19:37:598 hrs 15 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad92 MATIC
0x11fd4b53fa503e2fcb4432e9ac40f40844ba371564db173ac51f01c837854837222106762021-12-06 18:31:569 hrs 22 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.4198873238112153 MATIC
0x11fd4b53fa503e2fcb4432e9ac40f40844ba371564db173ac51f01c837854837222106762021-12-06 18:31:569 hrs 22 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.4198873238112153 MATIC
0x840033850a5dcee94a91a7e866decfbcc5ea6cc8e8f99e24c1d7da82eb09a3bc222078382021-12-06 16:46:0811 hrs 7 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.001 MATIC
0x840033850a5dcee94a91a7e866decfbcc5ea6cc8e8f99e24c1d7da82eb09a3bc222078382021-12-06 16:46:0811 hrs 7 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.001 MATIC
0xc58449077ac2a5032f71e37f0e6ab68b565c7663c8ee732073c576726f81353f222030932021-12-06 13:50:0714 hrs 3 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token3 MATIC
0xc58449077ac2a5032f71e37f0e6ab68b565c7663c8ee732073c576726f81353f222030932021-12-06 13:50:0714 hrs 3 mins ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad93 MATIC
0x1ae655ed536f39f6d8a6cf022d3067f064b1b362045075720c7d5ef7f90e9b32222030292021-12-06 13:47:5514 hrs 6 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad90x2fc80642aee568ddcda75dd418b61115511983040.682427577107210854 MATIC
0x1ae655ed536f39f6d8a6cf022d3067f064b1b362045075720c7d5ef7f90e9b32222030292021-12-06 13:47:5514 hrs 6 mins ago Polygon: WMATIC Token 0x3826367a5563ece9c164eff9701146d96cc70ad90.682427577107210854 MATIC
0x42b7864805b79873e1e588b8559c9dcf9e085725c7cefb7103f5a33dcd57be2b221987032021-12-06 10:51:5917 hrs 1 min ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token16 MATIC
0x42b7864805b79873e1e588b8559c9dcf9e085725c7cefb7103f5a33dcd57be2b221987032021-12-06 10:51:5917 hrs 1 min ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad916 MATIC
0x41b574d22434c093bc321ef4f109fea76d9607a4d54ac8962ba571c0e6559a33221951852021-12-06 8:27:2519 hrs 26 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad90x072f1686c3861a5cb458df80d4b04753940abd640.00000172524588643 MATIC
0x41b574d22434c093bc321ef4f109fea76d9607a4d54ac8962ba571c0e6559a33221951852021-12-06 8:27:2519 hrs 26 mins ago Polygon: WMATIC Token 0x3826367a5563ece9c164eff9701146d96cc70ad90.00000172524588643 MATIC
0xef0cf2ad7cee754dbed1f8aa8aa613ea18f512f8591f4aab05adaf9f1a6fd64f221936412021-12-06 7:29:2620 hrs 24 mins ago 0x3826367a5563ece9c164eff9701146d96cc70ad9 Polygon: WMATIC Token0.5 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

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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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