Contract 0xaa87715e858b482931eb2f6f92e504571588390b 2

 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xbc7a0a6dd9bf795ba7794957573bfb618f8bde5e521d37dbfba15ceec81de27eEnter Markets444058102022-12-07 17:35:015 hrs 9 mins ago0xd8f2eb921796b86da8e3d128b85e36d3cb1c6e62 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.0000368
0xb99fe2a7bb78faaf875b9f9dcf8033f0eaefe9e874a1caed2a7427a0ab867110Enter Markets443974362022-12-07 16:55:545 hrs 48 mins ago0x1eb6cd3f0f4fae6d8d00722ebadc4bd11eb9464b IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003341
0x201b754b0914ab51358bd273ae89a953b1b1196b4fe2a6c5e793f863578bb0b3Enter Markets443680032022-12-07 14:37:498 hrs 6 mins ago0x77dba249e90004e280d7d4401b8994cc03179a3e IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003304
0x1cd9f197a1a099be32ca80e5af948ca775aeb65ca0d8a61a957c1e8442212180Enter Markets443214142022-12-07 10:41:1712 hrs 3 mins ago0xf5a35887ebefcc1b7996d547bf4bf9d8179e93fc IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003111
0x775e481ae594e04e935e7c94342dbe93ba44643b2ab3a626d98fc0dfb9bd69b4Enter Markets443214032022-12-07 10:41:1312 hrs 3 mins ago0xbe94da6c81de8766030ccc87c43339a86fef79c6 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003141
0xfd48d97c9fb1d11c220c42cec32bcecc53fb6391fdf8aaad3308650f0a0d91bdEnter Markets441253652022-12-06 16:26:581 day 6 hrs ago0x7d71941ebf65819a2e07bfb719c0e86c90344f53 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00004144
0xb0b3290ba6680b104f2dfb2a0dc7f74fadcad8f3d23107a04a9a5e1b9896ad93Enter Markets441122502022-12-06 15:28:531 day 7 hrs ago0x6bc1d23e5b4a77c493fc94d25fe48774c5ebbc12 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00004063
0x136f6d9a459f4877f6a18cfbfdb7528f409890535ad14400a794a3d0628081bbEnter Markets439847012022-12-06 4:45:121 day 17 hrs ago0xad24c1cc473f6ceb2bcde9945e95a2020ce5e14c IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002982
0x301349e4b35b044d5b630fd96deafdfb8cee3a421a1687fe6c93de72fa26f292Enter Markets438820412022-12-05 18:38:482 days 4 hrs ago0x5e45e3754ce4db169ca182d003b4a633dce66bbf IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003871
0x6a8fbe4dfee177758a8c681c9cea670125ee81ec910e14840d7de8479d2e228bEnter Markets438503622022-12-05 16:06:002 days 6 hrs ago0x731e866d2a9a18ad6bcf7129104ad4fc9bef6d60 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00005431
0x8bd81a8ab77afee5049731060264260dc233129c37516e5cf08d74e2468762caEnter Markets437802682022-12-05 10:58:222 days 11 hrs ago0xee4b5d340174a4fe8b624e9db81ffa3d862c0d1f IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003032
0x93c4ca47f153a2b9749d0f5ff967737862bab3883e55ad1b1303c5888b801a6cEnter Markets437448482022-12-05 7:48:222 days 14 hrs ago0x20cf8690f7a79ea9631c77c6543061e93d712a83 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002844
0xd0155c4e9aa4606ffdc420d2fbf7e9164f2f2e707c800ed371e814bd3140926fEnter Markets432978752022-12-03 15:44:574 days 6 hrs ago0x00afd60e870ccc087d982ed6e64df5a008301ab9 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002749
0xe7a1e6c36aa016b4e02ebc43850a6d7e3ee3c5bb8626fee2a32215c9eb4573fcEnter Markets431928132022-12-03 7:46:314 days 14 hrs ago0xbf5f1064c788480d97ce1db6b4d6b8126d8ed903 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002624
0xed6b35d11b2dacd1d094cbe9cf0696611a56b10fbe2ae23605bb5e76fedad358Enter Markets428019952022-12-01 20:25:376 days 2 hrs ago0xd0e9ea86fe8fcc5b94aea14944c3152c4296e163 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003767
0xc182f22d7d55d1586648dc2567e201c5317018e166c82b2127ec58d7ce40642bEnter Markets428019882022-12-01 20:25:346 days 2 hrs ago0x992510af8f1604479424fa618e9876e93949e928 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00003767
0xacd34b07d665c5a99a29e8b3ec7e0a0fc12d18f40b7baf80d608255135472413Enter Markets425401062022-11-30 20:53:527 days 1 hr ago0xc4fad8f633f2a53e73b90d4a72156a900559a65e IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.0000343
0xd87fbf83ea3407216539870ca953fed2604cc88747145fa889c25a703df9fe05Enter Markets423471342022-11-30 5:08:297 days 17 hrs ago0xcdc0ea4ffc5541115851e34bf0cef682c98b3e05 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002676
0x352cb79dcf381431d122189030759aff4d5c825b5ec6d9c292ffc9a316ff5abaEnter Markets423377412022-11-30 4:08:467 days 18 hrs ago0xbd76d50fd302038b20b8fbb133a1561986398772 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002847
0x4fb7d1bd94150663ef8681fbc8ce4f6a8e5ce8f383b6a28ef1509f6da270ab31Enter Markets422550002022-11-29 20:27:448 days 2 hrs ago0x0bcd590a7bc197eab00bc00c19035d89bf8b0d9f IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002869
0x32b4da53a314f3045d0c38c30ee73bcc9b257007409c1fd41e29ce27e1f0d304Enter Markets420633632022-11-29 5:13:118 days 17 hrs ago0x686d0b34ed6f01f12526612ae234bc52b64e0579 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002497
0xd647f4224e6f7b2ba154cc07c8d6f7ac5cc4bc2a99c3e960562541e1c388aa9cEnter Markets420441592022-11-29 3:23:408 days 19 hrs ago0xc7bae78fc2f27db4388292053ee434dab2a1a58c IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002653
0x0231d8104e81ecc8f79a10336340ef600dc38e13217662089120d5c07b43ee83Enter Markets416918692022-11-27 18:29:2210 days 4 hrs ago0xb07217cac9b177621fc237602e8d30aebc3f42ba IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002649
0x7ab21919bbeaee706e1da99b87020f0f0c887c826468e0e86bb4f78eecedfb94Enter Markets416838482022-11-27 17:46:0110 days 4 hrs ago0x086cbf662396e8bc3769bd535801e5603521f0d8 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002853
0x73d6e61601579d61e7c01d126332235b7f2a1ac6b3ce605a1d2bade54bb2bd70Enter Markets416838422022-11-27 17:45:5910 days 4 hrs ago0xfa9076cd54f7464213a5f193d925001516240716 IN  0xaa87715e858b482931eb2f6f92e504571588390b0 ETH0.00002853
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0x2bf852e22c92fd790f4ae54a76536c8c4217786b 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x77401ff895bde043d40aae58f98de5698682c12a0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x04d2944394b70d6e56fcf1cad3aa6b5a43ec8a5c0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x17933112e9780abd0f27f2b7d9dda9e840d431590 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x04d2944394b70d6e56fcf1cad3aa6b5a43ec8a5c0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x2bf852e22c92fd790f4ae54a76536c8c4217786b0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xe6e7dec8fbb4cc1cca349cd1022044ccbf5a792dd1071811f701be0f4ba6189c444465302022-12-07 21:29:381 hr 15 mins ago 0x2bf852e22c92fd790f4ae54a76536c8c4217786b 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xbc1ef5a5e39ce2316ed76d09a5dd185fe0620ad653b7656b17da7a0033a25904444464812022-12-07 21:29:201 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xbc1ef5a5e39ce2316ed76d09a5dd185fe0620ad653b7656b17da7a0033a25904444464812022-12-07 21:29:201 hr 15 mins ago 0x17933112e9780abd0f27f2b7d9dda9e840d43159 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xbc1ef5a5e39ce2316ed76d09a5dd185fe0620ad653b7656b17da7a0033a25904444464812022-12-07 21:29:201 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x77401ff895bde043d40aae58f98de5698682c12a0 ETH
0xbc1ef5a5e39ce2316ed76d09a5dd185fe0620ad653b7656b17da7a0033a25904444464812022-12-07 21:29:201 hr 15 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xbc1ef5a5e39ce2316ed76d09a5dd185fe0620ad653b7656b17da7a0033a25904444464812022-12-07 21:29:201 hr 15 mins ago 0x17933112e9780abd0f27f2b7d9dda9e840d43159 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0x2bf852e22c92fd790f4ae54a76536c8c4217786b 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x77401ff895bde043d40aae58f98de5698682c12a0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x04d2944394b70d6e56fcf1cad3aa6b5a43ec8a5c0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x17933112e9780abd0f27f2b7d9dda9e840d431590 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x04d2944394b70d6e56fcf1cad3aa6b5a43ec8a5c0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0x2bf852e22c92fd790f4ae54a76536c8c4217786b0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xa0ea3594a79317fbf2959a94837d47b5698bdd6948380237e5ec02983adb731a444444832022-12-07 21:17:371 hr 27 mins ago 0x2bf852e22c92fd790f4ae54a76536c8c4217786b 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
0xb01afe7bd18bfd3a8fd252adeef4e68f93ea370adc771c0b1ea17a9db8fa94da444444262022-12-07 21:17:231 hr 27 mins ago 0xaa87715e858b482931eb2f6f92e504571588390b 0xf0fe1cb691c4153bbcf7ef03cd26e1d85848042a0 ETH
0xb01afe7bd18bfd3a8fd252adeef4e68f93ea370adc771c0b1ea17a9db8fa94da444444262022-12-07 21:17:231 hr 27 mins ago 0x17933112e9780abd0f27f2b7d9dda9e840d43159 0xaa87715e858b482931eb2f6f92e504571588390b0 ETH
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x3393cD223f59F32CC0cC845DE938472595cA48a1

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 Arbiscan on 2021-08-30
*/

// 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 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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Metadata Hash

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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