Contract 0xc922f4CDe42dD658A7D3EA852caF7Eae47F6cEcd 10

 
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0x3522eff3e5726b7bbfb6eae5ea7455a487934faea6fd1ec582bba0a98c1d93a1Trade1102418692023-09-30 14:01:551 hr 30 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000644296650.034236548
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0xe7370f1e6603bcc8d2cc9d16496eb9998d288550da7f441ae6202184d3930decTrade1102286072023-09-30 6:39:518 hrs 52 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000892040370.036863384
0x44eb38bc1e598234a84108356321b02603f5717b6636cec7056d24ae08172f5fTrade1102281882023-09-30 6:25:539 hrs 6 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000497520350.027279238
0x59a0a46b67e1bdebc446335907d86cfe930f47d45ecb423ef5f2cc958252dc06Trade1102280482023-09-30 6:21:139 hrs 11 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000402819290.022448143
0x95b6b215c74fd1db7433230976fed374695398b1a4eec0ee161dc894d97b16ddTrade1102214342023-09-30 2:40:4512 hrs 51 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000564790660.022336212
0xa7e71bd1b83a8b0e62f0a63cfe452e9978709cd0a3e522ba11cda98b7dcb8f00Trade1102113712023-09-29 21:05:1918 hrs 27 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000644275760.033318321
0x03f7d3418ac2ded26f5abd63c336e9819aef510b56c9eda6feb29cad29234ceaTrade1102058072023-09-29 17:59:5121 hrs 32 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000615899350.032745199
0x7b11d2d4848b5d7c4fdd903105c0e1ae75488409a0fe10e8fb4d0b9c25f22166Trade1102057962023-09-29 17:59:2921 hrs 32 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000640956380.034285432
0x3838dc31ca91db3baef8789fe7c0ae94f8e59865509d612cf4a3a4e16ea3689bTrade1102029392023-09-29 16:24:1523 hrs 8 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000778245760.040860547
0x9a4cb8aed8f7ef23d83415a0943cebc320139c53b44835ae32c072806a6df634Trade1102016192023-09-29 15:40:1523 hrs 52 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000805753490.044555432
0xd9ffdd5589db37f1d4fec67c45fbff4da27fc8c6813f8b9495e18544253fbccdTrade1102016072023-09-29 15:39:5123 hrs 52 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000808537930.043753102
0x9c9f8586a620af83cf7e37cfe69242325f982c3417b21d121b6a450d2b89f049Trade1102014502023-09-29 15:34:3723 hrs 57 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.00007897840.040374026
0x918753c4bdfdbd8203cd1448b242c37a08395e35bedbe78d1130f086091f6eabTrade1102014382023-09-29 15:34:1323 hrs 58 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000819570790.041245643
0x05140ed4c96b9be4a2534a4482a06fe4a735206339b0469a1cfeccb02ca3f0ecTrade1101737162023-09-29 0:10:091 day 15 hrs ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000801972630.032166007
0xe036590d6d4d95bf3a7879f6103c7f52d5481fd5dd6d5b1d15728c7bd602c3a1Trade1101583922023-09-28 15:39:211 day 23 hrs ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0001400789020.051520538
0x9db38bb20a5176ab2bafef0b5eb636aff05f8012d619cdfce621c8ad2582cacbTrade1101579412023-09-28 15:24:192 days 8 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000986136150.047825756
0xffbf2c058028709ca5788946d81dcf533509152327ed6c12de29aee65797f9f1Trade1101578242023-09-28 15:20:252 days 11 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000944569930.045277338
0x1cb01dadef86fb37908b2be98348d7dfbb96f3e65b29ae03d030f3ba5efd3763Trade1101577092023-09-28 15:16:352 days 15 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0001212339950.065505309
0x00f60b68697262984c229739a7cead117e866e04c14805af4467f69716d0ef7bWithdrawal Reque...1101138582023-09-27 14:54:533 days 37 mins ago0xe966c59c15566a994391f6226fee5bc0ef70f87a IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000273645570.061177
0x60fd761a8ae4954a083d320e48d6a4f41a9a7384523ac5709f1eef80a0444e30Deposit1100803522023-09-26 20:18:013 days 19 hrs ago0xc52458397d3bba8b7c4b2a8486ec7ed295fdc607 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000691417140.059138951
0x10bc52ced595eb988bd072c521ac4998d613680f42bc190153778f88c2864f4bTrade1100347472023-09-25 18:57:514 days 20 hrs ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000878058070.05411183
0x0d7fe5d33b9a890c14ed43b6b95beede21889596cf9b4101f4caec680b1a0fa4Trade1100332702023-09-25 18:08:374 days 21 hrs ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0000841157250.044426229
0x3b747384a89bc16a23e6bedfceaf149523eaa02b9dfd36382a995a15d81623ddTrade1100293712023-09-25 15:58:394 days 23 hrs ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0001064644120.061266961
0xc6e34940436cfa2682df72bce276336f8214dd03bda9857110dad9e770e96bd3Trade1100275722023-09-25 14:58:415 days 33 mins ago0xff936b80783b32ad3f2b4e610d04c9778c4669a0 IN  0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd0 ETH0.0003759268620.269616277
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0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0xdff1e123cee6988b0735ac5a5beee6980ce32f720 ETH
0x5889ef40551f0a0cc52d9802e0d582114f8e2ba59f216b33aed6d89d9d2b03571075550402023-07-30 9:20:5762 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0xf270bba56b1a8ca722acbd6e6fb255a51dc065a70 ETH
0x45ad4d4aa31afe83ba2e29b209c84046e09ea269f77ad28f2ed2719ddc4cc0cf1075544742023-07-30 9:02:0562 days 6 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0xf270bba56b1a8ca722acbd6e6fb255a51dc065a70 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x5add7ca7f4ab0ed68d0d5f4c0cdeab4c22968ca90 ETH
0xdd41561a6daa68a13a70133f1f297508542cd855057b3a0cfe172b7824b6c4161075482152023-07-30 5:33:2762 days 9 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0xf270bba56b1a8ca722acbd6e6fb255a51dc065a70 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecdSynthetix: sUSD Token0 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x170a5714112daeff20e798b6e92e25b86ea603c10 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0x5a6d76b77e89d99cb83fd9fb36ee3ecc023903e70 ETH
0xd7ab51325e9f93add12cdeaa876eadc8a068c26a19ab501bb053e180413a79e31075338232023-07-29 21:33:4362 days 17 hrs ago 0xc922f4cde42dd658a7d3ea852caf7eae47f6cecd 0xf270bba56b1a8ca722acbd6e6fb255a51dc065a70 ETH
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Similar Match Source Code
This contract matches the deployed ByteCode of the Source Code for Contract 0xf18D727C034f47AE2C0FE221C1cf4A15f0557b5F
The constructor portion of the code might be different and could alter the actual behaviour of the contract

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 Optimistic.Etherscan.io on 2021-11-13
*/

// 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 Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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