Contract 0x57f12dd76b138caaef4c0def3c18870610a04c82

 
Txn Hash Method
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Value [Txn Fee]
0xedddb90b11c2039fc50aa43160ebf2eef270f28e461dd7e6f91ab7a7aedfaaea0x1ec6ff6911576232021-09-17 17:27:02284 days 10 hrs ago0xcb64dbdd7c358647ae2d814d1f0decd4523941ae IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.000776270145 ETH
0xe39b721f898437e445ffb3165fa356463e2edaed3ea32911d569ade7c1a837fc0x1ec6ff6911252452021-09-17 7:49:06284 days 20 hrs ago0xcb64dbdd7c358647ae2d814d1f0decd4523941ae IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.000752656394 ETH
0x84231cae29ef4b120d9e46f85768d2af7bf5abf1f5e832800ffefb016309cb5b0x1ec6ff6911211282021-09-17 6:44:30284 days 21 hrs ago0xcb64dbdd7c358647ae2d814d1f0decd4523941ae IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.000756847842 ETH
0xa0d7e528977a957a65285bf9891fe24118431dcf43309f9524d52dd0af09e6990x1ec6ff697129842021-09-13 11:03:31288 days 16 hrs ago0x81e9d573d6086630d8f2327d276bb4f4c5915b9d IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.000714952216 ETH
0xb1f7841817221a1a7701ae9392a790ab58445d7e0ac47f52f3d022c5348227b00x1ec6ff697129742021-09-13 11:03:31288 days 16 hrs ago0x81e9d573d6086630d8f2327d276bb4f4c5915b9d IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.000685865507 ETH
0xdb5abe583a87c0697704d1eb4941644a0e1a37473abf93ba12b1b8183ba4b7c00x1ec6ff693464002021-09-10 3:38:04292 days 23 mins ago0xca4b7a7fa105896cead78483964b7b2b7e16b109 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001353023571 ETH
0xe06c8aed615a1908f466f3aa001165bf80c24d32e3959a0691cdd018bfdffa3f0x1ec6ff693278802021-09-09 5:40:13292 days 22 hrs ago0x01bd672635185b7b5d7820ae92c3bb6ccc7756ef IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001559134595 ETH
0x6e9acf5064c2aad54d1cee48b37c281a6c62fbd8c8fde140ade58c9878ebf3650x1ec6ff693069522021-09-07 13:40:13294 days 14 hrs ago0x4f4326e498fe3db388d06a330c6f4c94497e8995 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001135009667 ETH
0x54d58bafde6566705cd1353a86a59ea526cd9e504f8a9639cc62c1964933d0a90x1ec6ff693067962021-09-07 13:16:12294 days 14 hrs ago0xd24c0699a49c11e2c1697172d59168c8ad581873 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001150640245 ETH
0x6ea0732da7b5699864196b0ad55b237c7ca502e67a7b0c848e8c69e7f3f76b380x1ec6ff693065122021-09-07 12:32:45294 days 15 hrs ago0xcf991e3f8414a8949967d51550683852d47f88f2 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001149399397 ETH
0x6cf550c5e6fd5f670634c2bcf18588780fa3745241512f1176db0a6b3de4010c0x1ec6ff693062672021-09-07 11:56:39294 days 16 hrs ago0x3c5de42f02debbaa235f7a28e4b992362ffee0b6 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001156537332 ETH
0x0e73109342c10cc35171241d37a294afbaa7dd3c5c0c11c17a94f4276894917d0x1ec6ff693061172021-09-07 11:22:37294 days 16 hrs ago0x9e04d1187b3af557b6bd4034bdd228b725d6e18d IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001155008714 ETH
0xa8ab20c585cb0f18d2541868e2b0a933a4a4543f329430e173a85f7fde1555430x1ec6ff693060072021-09-07 10:45:19294 days 17 hrs ago0x9e04d1187b3af557b6bd4034bdd228b725d6e18d IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.00115524182 ETH
0x17006878cd501ad16e3f4717c00982caaf5753c1432ba476435e64f907fe372b0x1ec6ff693058632021-09-07 10:14:27294 days 17 hrs ago0x639822107482dc6a1a406f36f6a80a8d4f462918 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001156979911 ETH
0xe957b5927abacd56e3370f11e5eca85330fb4e7ccc407949617a2031736334dd0x1ec6ff693056992021-09-07 9:56:45294 days 18 hrs ago0x9e04d1187b3af557b6bd4034bdd228b725d6e18d IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001154702561 ETH
0x52af405bf1c2a1502e1624845f8b9c27973e5d656660f4c6543b6e9a90acc2510x1ec6ff693056902021-09-07 9:55:05294 days 18 hrs ago0xd24c0699a49c11e2c1697172d59168c8ad581873 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001156759696 ETH
0x8d2f12b1b85c8f3d17c7dc49cc27b008b3e18c01ce44114a5e23e5657b5768b10x1ec6ff693036832021-09-07 5:38:49294 days 22 hrs ago0xca4b7a7fa105896cead78483964b7b2b7e16b109 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001133217693 ETH
0x0d5719eb99738d4876d8444992b83114a175d68a06ca40b7c8b6eacaec44f49e0x1ec6ff693033052021-09-07 3:59:44295 days 1 min ago0xca4b7a7fa105896cead78483964b7b2b7e16b109 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001137706751 ETH
0x2d186c3bfaecfbab7535a887a04d7be8a55a7fe51edbea11c1c9f1694075ec3c0x1ec6ff693027212021-09-07 2:37:17295 days 1 hr ago0xca4b7a7fa105896cead78483964b7b2b7e16b109 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001149823271 ETH
0xacd6b315e3ff27d70ca188a5d32e09a13a9aa7f59106ef011372cbac1bdb94720x1ec6ff693025352021-09-07 2:13:53295 days 1 hr ago0xcf991e3f8414a8949967d51550683852d47f88f2 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001163653379 ETH
0x5061717bfb81147d9d86ea6cd5f752cb639628b19ab06812944e2e423a19be3f0x1ec6ff693024402021-09-07 2:06:19295 days 1 hr ago0xc877af078cdd6904dcad875e15388be0d18cbfe4 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001165873272 ETH
0xd58c08f2f0b9a459c9bf4347efe4e2f88166dec562b40bc41c1c036903115b7a0x1ec6ff693009922021-09-06 22:23:53295 days 5 hrs ago0xfdbe9f52da5cd858f2a64b842f406d51a0fbcf6f IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001163793046 ETH
0x3c85437778799dfaa1bf847053720da3b62cf8b170753d2f419dab28a64d1a6b0x1ec6ff692995172021-09-06 18:53:52295 days 9 hrs ago0x301504bae73b1f9a59723e271c79ccbb91c485ef IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001175116873 ETH
0xbaed4b3dd8badd6a5b90bf1839703bd351a375f0d35fda842334adb128b07e5d0x1ec6ff692991542021-09-06 18:09:31295 days 9 hrs ago0xcf991e3f8414a8949967d51550683852d47f88f2 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001191142182 ETH
0xf6f8fa496935d2da57d458e5d3269c18439fa46eb4a51903367db87c5b0ec7e70x1ec6ff692990022021-09-06 17:56:41295 days 10 hrs ago0x4f4326e498fe3db388d06a330c6f4c94497e8995 IN  0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH0.001191274955 ETH
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x358677aa3f2507673b1cc9f300719c873686cc2630ae6bdc318a7d0763fa217f11869822021-09-18 6:13:04283 days 21 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xedddb90b11c2039fc50aa43160ebf2eef270f28e461dd7e6f91ab7a7aedfaaea11576232021-09-17 17:27:02284 days 10 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0xabfc67eeb00f7fb738aeab9829560a780f2d41af0 ETH
0xedddb90b11c2039fc50aa43160ebf2eef270f28e461dd7e6f91ab7a7aedfaaea11576232021-09-17 17:27:02284 days 10 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0x9dd11df2fb2aeafd6f21f060c27470b67372271b0 ETH
0x83d1cdb99f07479289ed31e4f35dcdb8334f3574835515266797a817ee2d034411568042021-09-17 17:06:08284 days 10 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x3f0e86bc6843902590daf0a3663b09939148b968880006eff90b3e3c47cef23f11567822021-09-17 17:05:51284 days 10 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xf896f824d048aa3f18cc3bb614e7061cd8af602ef2f9844bc74f20f3d48ceeec11283392021-09-17 8:09:41284 days 19 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xe39b721f898437e445ffb3165fa356463e2edaed3ea32911d569ade7c1a837fc11252452021-09-17 7:49:06284 days 20 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0xabfc67eeb00f7fb738aeab9829560a780f2d41af0 ETH
0xe39b721f898437e445ffb3165fa356463e2edaed3ea32911d569ade7c1a837fc11252452021-09-17 7:49:06284 days 20 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0x9dd11df2fb2aeafd6f21f060c27470b67372271b0 ETH
0xb5c0919bbc94c494d15c1e180f9aed1745304cde13aefe1103fb51cb61043d9711252142021-09-17 7:47:36284 days 20 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x84231cae29ef4b120d9e46f85768d2af7bf5abf1f5e832800ffefb016309cb5b11211282021-09-17 6:44:30284 days 21 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0xabfc67eeb00f7fb738aeab9829560a780f2d41af0 ETH
0x84231cae29ef4b120d9e46f85768d2af7bf5abf1f5e832800ffefb016309cb5b11211282021-09-17 6:44:30284 days 21 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0x9dd11df2fb2aeafd6f21f060c27470b67372271b0 ETH
0x87091104cd14c73341419819dcc0b523510bf092bb1e582bd6ff9909718de26c11211042021-09-17 6:44:30284 days 21 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x88462ff62ecf723ac01204b0fc6697894928f6e23e5d5f03e4da4cadcff870a79159962021-09-15 11:53:26286 days 16 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xa0d7e528977a957a65285bf9891fe24118431dcf43309f9524d52dd0af09e6997129842021-09-13 11:03:31288 days 16 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0xabfc67eeb00f7fb738aeab9829560a780f2d41af0 ETH
0xa0d7e528977a957a65285bf9891fe24118431dcf43309f9524d52dd0af09e6997129842021-09-13 11:03:31288 days 16 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0x9dd11df2fb2aeafd6f21f060c27470b67372271b0 ETH
0xb1f7841817221a1a7701ae9392a790ab58445d7e0ac47f52f3d022c5348227b07129742021-09-13 11:03:31288 days 16 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0xabfc67eeb00f7fb738aeab9829560a780f2d41af0 ETH
0xb1f7841817221a1a7701ae9392a790ab58445d7e0ac47f52f3d022c5348227b07129742021-09-13 11:03:31288 days 16 hrs ago 0x57f12dd76b138caaef4c0def3c18870610a04c82 0x9dd11df2fb2aeafd6f21f060c27470b67372271b0 ETH
0x725efd35711e8ca1eee786d42c0ff8f072f2c97f0f3391deed4698a9e8281e7b7128262021-09-13 11:00:41288 days 17 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x62b40df7cf3c5869b33c095fd584f1cc17529a5230708472936a69bf1875d2b86121152021-09-12 17:25:37289 days 10 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xa693e78dffe54cf01e157db90f91796d352e0d9365488df2e93f6b0c7a0832fc4724782021-09-12 2:34:51290 days 1 hr ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x754f9449f083d60f41cad5388c2cc9a06f89e7a348df57da960ddd1aae45bba14303472021-09-11 18:18:02290 days 9 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xd89f29f1ff59805b37daa2e9706d74ba66075eee30c3292a3b060e2104420d6b4053482021-09-11 12:52:05290 days 15 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x4cd37e718228efcd2c3f80241f082a48f0706d9a51eb060e43cdacd279bac7d93892522021-09-11 8:47:22290 days 19 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0x3f7cccc5af9c51df8276c1edb7113f0b16eba82c2cdc3717ba3ab1b8f3c5ea613892342021-09-11 8:47:22290 days 19 hrs ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
0xb84ae155f988604591e395c1c795a72023798f0018b9756ade6ce63112a75bd33764152021-09-11 3:28:06291 days 33 mins ago 0x04951e01d93aa9ba824b7a8b99007d9f31520171 0x57f12dd76b138caaef4c0def3c18870610a04c820 ETH
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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 0x3393cD223f59F32CC0cC845DE938472595cA48a1

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at Arbiscan on 2021-08-30
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Contract ABI

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

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Deployed ByteCode Sourcemap

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Metadata Hash

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