Contract 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 1

 
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xcb7e24b9dfc8f261df446fc6541c6fb34a4df257cee943f8b3f92d4f18c6a4820xfe1b577b240965522022-01-24 7:20:26245 days 5 hrs ago0xf4d3f2874b4c47e6ecbed986c93df21149520a6d IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.001286928901 33.075352789
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0xe460368eb8106c1d6ef3179919d065056517fefd4e2505f2f7d36e953ac0b3bcWithdraw Bonus237555852022-01-15 17:45:54253 days 19 hrs ago0x580bfb4e5e82a0f8901d906c7c108c6e3011f6ed IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.00092519531
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0xeb63dca6ac934ee0ef4a6de676afa16dc30e11ffecf67cf9ee606914995fa3f6Buy Card236241872022-01-12 7:09:17257 days 5 hrs ago0xaff5e4a0d66cc2518d1c3b6ea21fbb8813e9dcc1 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.15 MATIC0.007935541237.2
0xb82f457a4f0dfd1543c132ccfd7fbe8536d990dcc24a3114661ce53bfee9f5c2Withdraw Bonus236173212022-01-12 3:13:02257 days 9 hrs ago0x47d05dbd06950cdb88f6424556f284347b092811 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.0008953530.000000001
0xe134ac6546c3accf37be97baaf48530a0bca1648a64981f4763f431fca255ab80x3ebbed8b234995412022-01-09 0:53:55260 days 12 hrs ago0x002c011112193a1a92002a2db76d2ccd3b92d371 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.00168357931
0x89abec42f7286b5530adfc2bb8ce0ce82d7f7fcfe05af605c621b3028697c13bWithdraw Bonus234995272022-01-09 0:53:27260 days 12 hrs ago0x002c011112193a1a92002a2db76d2ccd3b92d371 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.00092519531
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0x1c7d71c5a2bdbca3800eeb12c9f93cf30bc835a57a7870e51326bb297497d7c2Buy Card233658802022-01-05 9:09:15264 days 3 hrs ago0x580bfb4e5e82a0f8901d906c7c108c6e3011f6ed IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.15 MATIC0.1470532992451.2
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0x98cdf76040a67914e942bfec59ac690cf3b3652c599e70e950387cacd08894a2Buy Card232936492022-01-03 8:39:31266 days 4 hrs ago0x95bea686d8e2946ae5776cf893d921cc7af3b160 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1 MATIC0.0100722916858.08
0xac9a6d6e496a459fcddd4e7c0b571330b91f039521120440e7211f53a91a0ff8Buy Card232609172022-01-02 12:21:07267 days 38 mins ago0xf8e9cfa3ad94dce24d41398396d1fa4597c1f28a IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.15 MATIC0.00861181650136.7356
0x076270dfa0bd30c6b217c8f0f73090378dbfe8b49acdb861738899e9a61c525eBuy Card232538602022-01-02 8:07:39267 days 4 hrs ago0x47d05dbd06950cdb88f6424556f284347b092811 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.4145 MATIC0.01304366436
0xf8ae3c9aff3c24ebbad995721dc2e6c896ff139477a1ca01ab039166218c1535Buy Card232538342022-01-02 8:06:47267 days 4 hrs ago0x2017bede6f6b788d66787608ca4e92416677fe27 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.3136 MATIC0.00967226733
0x75c2c4cb511e0cca13b75c8588fed79fd8e391bef28bbe3290d76fbfc588e1b2Buy Card232537612022-01-02 8:04:17267 days 4 hrs ago0x2017bede6f6b788d66787608ca4e92416677fe27 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.2754 MATIC0.00934913133
0xeef58584026907f3dfe539f26ed2f367a8ee20b39f60cf616f7430b4e1bcc049Buy Card232536902022-01-02 8:01:47267 days 4 hrs ago0xf8e9cfa3ad94dce24d41398396d1fa4597c1f28a IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.2382 MATIC0.00902602833
0xcf90824eea261478b3a32aff9d8c7d3deb4987020ee1f9c986bec6a425642cdeBuy Card232536202022-01-02 7:59:23267 days 4 hrs ago0x2017bede6f6b788d66787608ca4e92416677fe27 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.2021 MATIC0.00870289233
0xadf01de1ed0ce8d40d92f372480b96945c8b567bfe640d26b1fc484004b52b99Buy Card232535512022-01-02 7:57:01267 days 5 hrs ago0xf8e9cfa3ad94dce24d41398396d1fa4597c1f28a IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.167 MATIC0.00894408933
0x4a89a5fcde6450b0b79595d1911da11a3408790deaa3a8c25bef18f5a1060dcdBuy Card232534812022-01-02 7:54:37267 days 5 hrs ago0x2017bede6f6b788d66787608ca4e92416677fe27 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff1.133 MATIC0.00862098633
0xb8bc3e47089e9e841dcb632312edf872738834877f88a8dad14f110abdb87832Withdraw Bonus232534372022-01-02 7:53:05267 days 5 hrs ago0x2017bede6f6b788d66787608ca4e92416677fe27 IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.0008953530
0x4413ff86b98576f9b579f50556b5e1ae427bad19f98a3d6bf42e5a865ddcfce0Withdraw Bonus232534202022-01-02 7:52:31267 days 5 hrs ago0xf8e9cfa3ad94dce24d41398396d1fa4597c1f28a IN  0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0 MATIC0.0008953530
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Latest 25 internal transaction
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0xcb7e24b9dfc8f261df446fc6541c6fb34a4df257cee943f8b3f92d4f18c6a482240965522022-01-24 7:20:26245 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0xf4d3f2874b4c47e6ecbed986c93df21149520a6d156.515759710290440641 MATIC
0xe460368eb8106c1d6ef3179919d065056517fefd4e2505f2f7d36e953ac0b3bc237555852022-01-15 17:45:54253 days 19 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0x580bfb4e5e82a0f8901d906c7c108c6e3011f6ed1.9544 MATIC
0xfc8f213743c4771deb663046f4cb77f3fd469e62d296a5725f10160c91e91e5b236350902022-01-12 14:12:31256 days 22 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.06 MATIC
0x6a86f1b592a59472acdc5cbf72175f16d262310a8d8398c7aaced44586ac47a6236243052022-01-12 7:13:21257 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0xaff5e4a0d66cc2518d1c3b6ea21fbb8813e9dcc10.9772 MATIC
0xeb63dca6ac934ee0ef4a6de676afa16dc30e11ffecf67cf9ee606914995fa3f6236241872022-01-12 7:09:17257 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.06 MATIC
0xb82f457a4f0dfd1543c132ccfd7fbe8536d990dcc24a3114661ce53bfee9f5c2236173212022-01-12 3:13:02257 days 9 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0x47d05dbd06950cdb88f6424556f284347b0928117.540366512036331264 MATIC
0x89abec42f7286b5530adfc2bb8ce0ce82d7f7fcfe05af605c621b3028697c13b234995272022-01-09 0:53:27260 days 12 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0x002c011112193a1a92002a2db76d2ccd3b92d3710.528587172205821162 MATIC
0x3fda70ef0091c12ad89e24c803a197cf99b04e50f4a3a0d5561a88e1b0d1b6ee234763512022-01-08 10:37:34261 days 2 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.039 MATIC
0x3fda70ef0091c12ad89e24c803a197cf99b04e50f4a3a0d5561a88e1b0d1b6ee234763512022-01-08 10:37:34261 days 2 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0xaa91db4cf292ad5f0cb88fc3e4930d82c84b46d80.021 MATIC
0x1c7d71c5a2bdbca3800eeb12c9f93cf30bc835a57a7870e51326bb297497d7c2233658802022-01-05 9:09:15264 days 3 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.039 MATIC
0x1c7d71c5a2bdbca3800eeb12c9f93cf30bc835a57a7870e51326bb297497d7c2233658802022-01-05 9:09:15264 days 3 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0xaa91db4cf292ad5f0cb88fc3e4930d82c84b46d80.021 MATIC
0x98cdf76040a67914e942bfec59ac690cf3b3652c599e70e950387cacd08894a2232936492022-01-03 8:39:31266 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.06 MATIC
0xac9a6d6e496a459fcddd4e7c0b571330b91f039521120440e7211f53a91a0ff8232609172022-01-02 12:21:07267 days 38 mins ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.024 MATIC
0xac9a6d6e496a459fcddd4e7c0b571330b91f039521120440e7211f53a91a0ff8232609172022-01-02 12:21:07267 days 38 mins ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0xaa91db4cf292ad5f0cb88fc3e4930d82c84b46d80.036 MATIC
0x076270dfa0bd30c6b217c8f0f73090378dbfe8b49acdb861738899e9a61c525e232538602022-01-02 8:07:39267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.04796508075156993 MATIC
0x076270dfa0bd30c6b217c8f0f73090378dbfe8b49acdb861738899e9a61c525e232538602022-01-02 8:07:39267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0xaa91db4cf292ad5f0cb88fc3e4930d82c84b46d80.02582735117392227 MATIC
0xf8ae3c9aff3c24ebbad995721dc2e6c896ff139477a1ca01ab039166218c1535232538342022-01-02 8:06:47267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.07164313779174 MATIC
0x75c2c4cb511e0cca13b75c8588fed79fd8e391bef28bbe3290d76fbfc588e1b2232537612022-01-02 8:04:17267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.069556444458 MATIC
0xeef58584026907f3dfe539f26ed2f367a8ee20b39f60cf616f7430b4e1bcc049232536902022-01-02 8:01:47267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.0675305286 MATIC
0xcf90824eea261478b3a32aff9d8c7d3deb4987020ee1f9c986bec6a425642cde232536202022-01-02 7:59:23267 days 4 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.06556362 MATIC
0xadf01de1ed0ce8d40d92f372480b96945c8b567bfe640d26b1fc484004b52b99232535512022-01-02 7:57:01267 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.063654 MATIC
0x4a89a5fcde6450b0b79595d1911da11a3408790deaa3a8c25bef18f5a1060dcd232534812022-01-02 7:54:37267 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.0618 MATIC
0xb8bc3e47089e9e841dcb632312edf872738834877f88a8dad14f110abdb87832232534372022-01-02 7:53:05267 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0x2017bede6f6b788d66787608ca4e92416677fe272.276897708542248569 MATIC
0x4413ff86b98576f9b579f50556b5e1ae427bad19f98a3d6bf42e5a865ddcfce0232534202022-01-02 7:52:31267 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff0xf8e9cfa3ad94dce24d41398396d1fa4597c1f28a21.940607425733650901 MATIC
0xaf13eb8ee093956d9588fb7a2872514bbf0657007c1e1528bace4be5f7cc55fc232534112022-01-02 7:52:13267 days 5 hrs ago 0x15f8bf7db1b578e7b81f1ae6fe9daf15063976ff 0x3306b6edb1970e3fede112ff8eade723a73688c80.06 MATIC
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.

Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x5841565Bd231a868e47347d9749eF06AF5cA0970

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967Upgrade {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

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

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(address newImplementation, bytes memory data, bool forceCall) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            Address.functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature(
                    "upgradeTo(address)",
                    oldImplementation
                )
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _setImplementation(newImplementation);
            emit Upgraded(newImplementation);
        }
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

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

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

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

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(
            Address.isContract(newBeacon),
            "ERC1967: new beacon is not a contract"
        );
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }
}

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}

/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 */
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     *
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _upgradeToAndCall(_logic, _data, false);
    }

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal view virtual override returns (address impl) {
        return ERC1967Upgrade._getImplementation();
    }
}

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 *
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 *
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 *
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 *
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
 */
contract TransparentUpgradeableProxy is ERC1967Proxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
     */
    constructor(address _logic, address admin_, bytes memory _data) payable ERC1967Proxy(_logic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _changeAdmin(admin_);
    }

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

    /**
     * @dev Returns the current admin.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address admin_) {
        admin_ = _getAdmin();
    }

    /**
     * @dev Returns the current implementation.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     *
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address implementation_) {
        implementation_ = _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external virtual ifAdmin {
        _changeAdmin(newAdmin);
    }

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

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     *
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeToAndCall(newImplementation, data, true);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view virtual returns (address) {
        return _getAdmin();
    }

    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal virtual override {
        require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"admin_","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"implementation_","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Deployed ByteCode Sourcemap

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Swarm Source

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