Contract 0xa04197E5F7971E7AEf78Cf5Ad2bC65aaC1a967Aa 9

 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9Forward Multi As...416864522022-11-27 18:00:04453 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00003917 0.1
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784Forward Multi As...414314092022-11-26 18:00:06454 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000042 0.1
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762Forward Multi As...387321452022-11-17 6:00:05464 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00004073 0.1
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499Forward Multi As...375656462022-11-12 18:00:06468 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00004486 0.1
0xd5d7170223321150b6bf49745efed961b4fc7e360bbad08ae7e0a6d56a3e8524Forward Multi As...336034222022-10-29 12:00:08483 days 3 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00004228 0.1
0x76b3652b8ecf1cf4c91fb098b7da7667798aeb386039e6456467acd0d073b104Forward Multi As...328853282022-10-27 0:00:05485 days 15 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00005284 0.1
0x7a7c463c46b6d8150d901273ae436da1dfea7c3b042711b1c8f0729f0d2d39f9Forward Multi As...325314832022-10-25 18:00:07486 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00010687 0.1
0x5ee7b4ff6b9f6756acad618a3e52e7913e57c1c07c9a93ee99fe1398488e86d4Forward Multi As...305810392022-10-17 12:00:05495 days 3 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00004319 0.1
0xc24bd44964d2cb5c61f49a6b7f918969a470748207c347a09582c807f4c620d7Forward Multi As...297558112022-10-12 18:00:06499 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00005643 0.1
0x075df394e05a11bda80349be865a6a9f27009f6c2366a50ceaa752545cd032b8Forward Multi As...270412082022-09-27 18:00:06514 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00011077 0.1
0x225541ec128b34305f2d726a24b3fb715298dd07bb570cdb94fe240e36d39dd3Forward Multi As...265145522022-09-25 6:00:07517 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00002322 0.1
0x5bd227e32cc531303541c7313673b333a1ccdefe17c1933ff2a3e4166df85709Forward Multi As...254659662022-09-20 12:00:06522 days 3 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00001971 0.1
0x64d22da113a46448d7753626533251b3d860e00acdc58e6d15215f16b3921f4fForward Multi As...251909282022-09-19 0:00:07523 days 15 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00002874 0.1
0x55f65ebfba3837ad1ac9d480e04bdca1dc0898f77fc67a9c0c02af69ba2f8086Forward Multi As...238912532022-09-10 6:00:06532 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00002286 0.1
0x10232b658ff79b0953cf2595b813e1a882f0826efdeea5d33546d48e2361bbaaForward Multi As...233059222022-09-07 6:00:06535 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00003885 0.1
0x61086cfd080ffa2a594198fb53c7e3409c40994053d3df36be52b40191a4c870Forward Multi As...227142562022-09-04 0:00:04538 days 15 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.0000239 0.1
0x9fdb41f694f2ca8ce6ebdc88e0cab9ba8d1b49fc62a649046086a53f8950e75eForward Multi As...215743882022-08-27 17:59:48545 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000059811443 ETH0.10710758
0x1282a73f23e16ea42dd73ad1ac09056cb127d413fd4552b505ec3768d5e1aa52Forward Multi As...208413632022-08-21 5:59:26552 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000052412692 ETH0.093626863
0xe9400f3d691ae81956048a28438299421329ae05b360297c193c28deba45426bForward Multi As...208237632022-08-20 23:59:40552 days 15 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000069975093 ETH0.124999273
0xda803d6c2d4667114e1cb2ee37ae093f71f55ba7d26978dab241f8e50a787e6bForward Multi As...208010982022-08-20 17:59:36552 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000076146695 ETH0.136359997
0x640b6b5b34a537d66c2d4bfed27250a220cf0c64d611226b9db9fbf6e78251a0Forward Multi As...207758872022-08-20 11:59:24553 days 3 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000053327965 ETH0.095733846
0x3971ef889275e74f52e989ab9e307affbad1054d3f7269937d3aa610b064cb4fForward Multi As...207349912022-08-19 23:59:23553 days 15 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000085591173 ETH0.153652447
0x80c3e1ee9666094abb88dcf838f0fa539903a3b46e9230d3d8541db5a7fbdd89Forward Multi As...204282912022-08-16 17:59:50556 days 21 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.00009478673 ETH0.169739714
0x06d73f3efbace049e43310b3e509c75d42b0f52dbd97195d5208eab9badfe07bForward Multi As...203773382022-08-16 5:58:56557 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000101918267 ETH0.182962688
0x69076e4bfd7eb469c9bea3f89eda4febc9ae90d5403cee49a25977130a5b8ccdForward Multi As...202874862022-08-15 5:59:15558 days 9 hrs ago0x0aa354a392745bc5f63ff8866261e8b6647002df IN  0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa0 ETH0.000078496413 ETH0.140916002
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x7230d622d067d9c30154a750dbd29c035ba7605a0 ETH
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xd4e6589a8fb94ec866c34b2128053b9de56a0b0c69b6899383bb127e9e2872b9416864522022-11-27 18:00:04453 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x5fcdfd5634c50cccef6275a239207b09bd0379df0 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x7230d622d067d9c30154a750dbd29c035ba7605a0 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0x512671063ecb9b7112cfe9573ad590f4755468676217bf7e44ecbf0ac9283784414314092022-11-26 18:00:06454 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x5fcdfd5634c50cccef6275a239207b09bd0379df0 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x7230d622d067d9c30154a750dbd29c035ba7605a0 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xc3f34b694ccd8458644db09b2780ca3b8a6c208d666f466204060281eb1cd762387321452022-11-17 6:00:05464 days 9 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x5fcdfd5634c50cccef6275a239207b09bd0379df0 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x7230d622d067d9c30154a750dbd29c035ba7605a0 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa Arbitrum: USDC Token0 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x54752977a387a2eabdce47e575940d15bcc319c50 ETH
0xcb10f0d8c42ba74918ca49754f749b578baaad1a8a5c8f7820f22e5d919bd499375656462022-11-12 18:00:06468 days 21 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x5fcdfd5634c50cccef6275a239207b09bd0379df0 ETH
0xd5d7170223321150b6bf49745efed961b4fc7e360bbad08ae7e0a6d56a3e8524336034222022-10-29 12:00:08483 days 3 hrs ago 0xa04197e5f7971e7aef78cf5ad2bc65aac1a967aa 0x7230d622d067d9c30154a750dbd29c035ba7605a0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x54752977A387a2eABdce47e575940d15BCc319c5
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
/**
 *Submitted for verification at Arbiscan.io on 2021-08-31
*/

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 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.
 *
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @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) public payable {
        assert(
            _IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)
        );
        _setImplementation(_logic);
        if (_data.length > 0) {
            Address.functionDelegateCall(_logic, _data);
        }
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @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 private constant _IMPLEMENTATION_SLOT =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal virtual {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(
            Address.isContract(newImplementation),
            "UpgradeableProxy: new implementation is not a contract"
        );

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}

/**
 * @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 UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(
        address _logic,
        address admin_,
        bytes memory _data
    ) public payable UpgradeableProxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(admin_);
    }

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @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 private constant _ADMIN_SLOT =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } 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_ = _admin();
    }

    /**
     * @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 {
        require(
            newAdmin != address(0),
            "TransparentUpgradeableProxy: new admin is the zero address"
        );
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external virtual ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @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
        virtual
        ifAdmin
    {
        _upgradeTo(newImplementation);
        Address.functionDelegateCall(newImplementation, data);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(
            msg.sender != _admin(),
            "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":"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"}]

Deployed Bytecode

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Metadata Hash

beeaaca8fdbef2148bf896c3f9d6f45938be0a5a20923cc516d392c11f275959
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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