Contract 0x3eedf348919d130954929d4ff62d626f26adbfa2 1

 

Contract Overview

Vesta Finance: Borrower Operations
Balance:
0 ETH

ETH Value:
$0.00
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3Adjust Trove414274022022-11-26 17:37:181 hr 52 mins ago0x0561a78021d8966ddd20c28c6c4318d8675ee1f0 IN  Vesta Finance: Borrower Operations0 ETH0.00085976
0x3c41f60be76ed33d391fd2af8563d594c24ba970c1cd166b09e27b2b169f23e8Adjust Trove414268652022-11-26 17:34:191 hr 55 mins ago0x0561a78021d8966ddd20c28c6c4318d8675ee1f0 IN  Vesta Finance: Borrower Operations0 ETH0.00085281
0x5d3c3ff671538f6cf028c2ae4903d8d024fefba7698dfe0d85a2e04499165a81Adjust Trove414230652022-11-26 17:13:512 hrs 16 mins ago0x0561a78021d8966ddd20c28c6c4318d8675ee1f0 IN  Vesta Finance: Borrower Operations0 ETH0.00055961
0x39b2c4af52f4d25f517a2fccc3587cb456fc61360f6203fb355be2200e547d24Adjust Trove414225552022-11-26 17:11:012 hrs 18 mins ago0x0561a78021d8966ddd20c28c6c4318d8675ee1f0 IN  Vesta Finance: Borrower Operations0 ETH0.00085237
0x6ef19b8231d660121bce96ed21eca054e711b393e03595b7b5e922710fbc6d38Adjust Trove414220622022-11-26 17:08:262 hrs 21 mins ago0x0561a78021d8966ddd20c28c6c4318d8675ee1f0 IN  Vesta Finance: Borrower Operations0 ETH0.00107672
0x816eac61782cb8a6a2687b144a92371be9bfad00df5aed679f63820f4cf3f8a6Adjust Trove413957712022-11-26 15:01:464 hrs 28 mins ago0x24f8d92794a283b454d1fc32722f51a4f3bc1ae5 IN  Vesta Finance: Borrower Operations0 ETH0.0002773
0x3517a1853d85c118636f267c6a499241cbf4d9c262705a3603db840c5c227363Open Trove413885732022-11-26 14:30:024 hrs 59 mins ago0x4731223a7b5ac0c425f1f35d0bdf6d340a93a181 IN  Vesta Finance: Borrower Operations0 ETH0.00022623
0x80f9b7db839e0e50af7c1f889728858d19fca7304d8ccf0806ffc0219fdcd7e8Adjust Trove413856882022-11-26 14:16:485 hrs 13 mins ago0x806388e04b7583a0148451a8ecd29a748b8fd584 IN  Vesta Finance: Borrower Operations0 ETH0.00039879
0x8b635a84e71c5c0c1342f2bcc2db79ba1deb3b13d5916888036298a7cc0deb8eAdjust Trove413816852022-11-26 13:59:005 hrs 30 mins ago0x806388e04b7583a0148451a8ecd29a748b8fd584 IN  Vesta Finance: Borrower Operations0 ETH0.00060384
0xc5aefae2eaf25fc25e29c57f06a8cdafb62fa705f9fbd91e5061cf4540dbe27dAdjust Trove413799702022-11-26 13:51:015 hrs 38 mins ago0x7cbb3e41aa846b2c2a739ed21eca9a00ea63b7d9 IN  Vesta Finance: Borrower Operations0 ETH0.0003784
0x5000603d76b8dd935aae5444c6b6ee26ae7261ce7726f4b21ed8315b1f25a905Open Trove413745692022-11-26 13:25:516 hrs 4 mins ago0x6d29a57a27355946b04246d47686dc958b9c1368 IN  Vesta Finance: Borrower Operations1 ETH0.00055541
0x309c4637a31dd5ad10d5e6dffab3d652996b956baa533aa184c48e285c2fa65bAdjust Trove413734972022-11-26 13:20:406 hrs 9 mins ago0x7cbb3e41aa846b2c2a739ed21eca9a00ea63b7d9 IN  Vesta Finance: Borrower Operations0 ETH0.00037074
0xccb5b982877ca7e2b1d986d60218eaf42391930218490b44b8a955e972efb5c6Adjust Trove413730882022-11-26 13:18:386 hrs 11 mins ago0x84f35268cb9d9b9bad653c2b28aa7675d1906e6d IN  Vesta Finance: Borrower Operations0 ETH0.00028293
0x811ee51a77471a3f5bce0aa58b7d8d52dcad0c73e56dd20e8f606196fa5bac60Close Trove413730212022-11-26 13:18:196 hrs 11 mins ago0x9e3e264e2be9949675a9dbd5dfed2cda0b6447fc IN  Vesta Finance: Borrower Operations0 ETH0.00030628
0x44ed84de922509c8c19ecc925f4acb029c043acbd22047a4590072e1aa72cbf8Open Trove413562922022-11-26 11:57:347 hrs 32 mins ago0x2ac74bd02ee017fa05629432dd3728720c455032 IN  Vesta Finance: Borrower Operations0.36 ETH0.0005543
0xf9ea6c6119349ca2961668fe2ca152cc5478934eafe96c7ce22cad7e2cc17418Adjust Trove413555202022-11-26 11:53:507 hrs 36 mins ago0x53e213da8c28d85dc6663c3b5e35bb0ffbb05752 IN  Vesta Finance: Borrower Operations0 ETH0.00087004
0x3e3eac5b32ac9958916d99529985a2c32dc553bb2e7e433845b30c68ee82c593Adjust Trove413545352022-11-26 11:49:037 hrs 40 mins ago0x7cbb3e41aa846b2c2a739ed21eca9a00ea63b7d9 IN  Vesta Finance: Borrower Operations0 ETH0.00035204
0xbc6ae0ce3aaab579903218905a8750abf0e898176804966eb0ac5eba9191e27cAdjust Trove413536302022-11-26 11:44:427 hrs 45 mins ago0x7cbb3e41aa846b2c2a739ed21eca9a00ea63b7d9 IN  Vesta Finance: Borrower Operations0 ETH0.00035732
0x40f00fd64bc698e7be309f71fbfb9800deea3a0064f0519cd159274012ddf4c2Adjust Trove413509692022-11-26 11:31:487 hrs 58 mins ago0xc9e166f2737e004e93800dcef0d608b014df07f6 IN  Vesta Finance: Borrower Operations0 ETH0.00071301
0xf9efcea33b2f617b4a8691ae5dce984bf2ca89e3d58d78227fbfbd41254ff9f3Adjust Trove413509342022-11-26 11:31:397 hrs 58 mins ago0x53e213da8c28d85dc6663c3b5e35bb0ffbb05752 IN  Vesta Finance: Borrower Operations0 ETH0.00082686
0x8fae17157f7230b865f8b445032e24129e146eca667d595335c1bae3f3333d36Adjust Trove413507702022-11-26 11:30:497 hrs 59 mins ago0x53e213da8c28d85dc6663c3b5e35bb0ffbb05752 IN  Vesta Finance: Borrower Operations0 ETH0.00083562
0xc2e80ff1b46cb324b95393cdcd00d05c9174ad642aa286823cf3be609c0b9d52Adjust Trove413505612022-11-26 11:29:468 hrs ago0x5e46b7c3533bac32c5cbfa8790086cc040548619 IN  Vesta Finance: Borrower Operations0 ETH0.00088509
0xc6f72a6e242c256aad99b3ac58c917a00e978461fb209118456e7b16dec34f09Adjust Trove413500932022-11-26 11:27:348 hrs 2 mins ago0x7cbb3e41aa846b2c2a739ed21eca9a00ea63b7d9 IN  Vesta Finance: Borrower Operations0 ETH0.00054784
0xdc57952200966d563f4523a0b1ffdfedd8df2b0c8b1be9f3d9a9933125dde8dcAdjust Trove413496042022-11-26 11:25:128 hrs 4 mins ago0x1ac6f3fda78f74092de35835c1c2fb1cff0fe4b2 IN  Vesta Finance: Borrower Operations0 ETH0.00085265
0x8877614f6ee331bb16e7241d20dbab8491fefbbc847945602312065cc5285063Close Trove413446462022-11-26 11:01:338 hrs 28 mins ago0x892fac1beb41e5e4b44a21e2dbe238d92ff9564c IN  Vesta Finance: Borrower Operations0 ETH0.00030118
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Latest 25 internal transaction
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0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: Active Pool0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: Active Pool0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower OperationsOlympusDAO: gOHM Token0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower OperationsOlympusDAO: gOHM Token0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: VST Token0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: Active Pool0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x62842cedfe0f7d203fc4cfd086a6649412d904b50 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x996b43aadd750371ff81cb1100f7dcb6d33212470 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: Active Pool0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x996b43aadd750371ff81cb1100f7dcb6d33212470 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations Vesta Finance: Active Pool0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x5f51b0a5e940a3a20502b5f59511b13788ec6ddb0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x0f5d5e424765bf3b49f932f0e9b8e6f3791d33b10 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0x100ec08129e0fd59959df93a8b914944a3bbd5df0 ETH
0x7b698ddde95e2377c4ceb97719ce8947ce02801266ed4a24fc836df03b1698c3414274022022-11-26 17:37:181 hr 52 mins ago Vesta Finance: Borrower Operations 0xd218ba424a6166e37a454f8ece2bf8eb2264ecca0 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

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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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