Contract 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff 9

 
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xc88054995fa7f6cedbc2156f28df14158e75ecdf158217579dc4a44f0e3136f2Change Buying Co...286994262022-05-24 5:25:471 day 23 hrs ago0xea35ccbcdfb69a58c72f6da9786d6677e4bdc290 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00240679246632.033333333
0x7913a9ccc5e1572ab6adecacb93889c545a857a63222b1b543a83d3e874e476bChange Buying Co...286994222022-05-24 5:25:391 day 23 hrs ago0xea35ccbcdfb69a58c72f6da9786d6677e4bdc290 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00356295431
0xec33e34769b54595f30dee1663d8ec1fa4327461f5afa93053a40f54052b4454Mint286993902022-05-24 5:24:311 day 23 hrs ago0xea35ccbcdfb69a58c72f6da9786d6677e4bdc290 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00837809409932.033333333
0x52d8f9a8262dde2cf716821e68754f101ba1bf9e81683654469ed2c49130a255Mint285675582022-05-21 0:12:555 days 4 hrs ago0x77fb0deba36c1ae0057b8a07174ed3c87f53f11e IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000258555005 1.000000023
0xf6315e291e623bf3117e6564c82fb8f5cc175c39ea6fdab85ed211a0fce734daChange Buying Co...285670502022-05-20 23:51:335 days 5 hrs ago0x1c578067d0e02088820bc9aa1ca19719dd2f4d3a IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000120729 1.500000009
0x62232b66ddd000294f6ea992bc84c051130aa72725ce91430ff4637b27012d35Mint285670492022-05-20 23:51:295 days 5 hrs ago0xf0b91f302348b1dd7b47b94b5605cf506b1acfcc IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.007734735767 29.912466859
0x0e0ebafc841e4d89f1d4d903637d36bac97932239b228c3cca22b23825c93a28Mint285656942022-05-20 23:02:215 days 6 hrs ago0x65528cec63a0b814490982e7a3030694d4e5408c IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.007901166652 30.202890074
0x46b3cf23344031d2887a290b2d79170bac04d7e07f0ead42ae7e979f9ac87a11Mint285656942022-05-20 23:02:215 days 6 hrs ago0x65528cec63a0b814490982e7a3030694d4e5408c IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000418054502 1.500000009
0x7d2c2e86632c79c4b32444ed247343657593aea6f932390f3167bca9fc4fd749Mint285656892022-05-20 23:02:015 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.010554163874 29.76550615
0xbab2fdab9b5a8295fd5947f028f7c26948c6207583fbf7657649c275f627a470Mint285656892022-05-20 23:02:015 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.010880581313 30.686088814
0x069a60689200f814ff8075c9488823b0a9d585cb613eb8d53cdbeaa1406f82a7Mint285656892022-05-20 23:02:015 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.011881910124 31.504384516
0xb539d985a1d8ccdff127ba662fb50a4f1361044f8d077be380607916fd9af7a3Mint285656882022-05-20 23:01:575 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.013305887282 35.280000006
0xf7ca184dedeb6fa3e73777f46fc08acbbe1a9351f271b45e5ab5cf2d6a5123f5Mint285656882022-05-20 23:01:575 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.011476216898 30.428706005
0xfbfbe14e8774296108d32173aa33c7342711158b8a24dcf06b9b9cc32f827f75Mint285656882022-05-20 23:01:575 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.011612799984 30.790850309
0x1180b057527969a5f16a2da3051f351ad5499a1c3ccf7dce37dc838e93343d8aMint285656882022-05-20 23:01:575 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.011187004877 29.661872506
0xecbe611bb6cceb3cddca125f0180ead41cbc80b8d7cd395adf7471091cc5e3d1Mint285656882022-05-20 23:01:575 days 6 hrs ago0xcb2e204e01a952d928c43c6bbaba05e79f64e099 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000565726504 1.500000012
0x069bf78bcca3e050596e969dfd2e7e6966c3de07262fbcaffe068a552d38b0e8Mint285656792022-05-20 23:01:215 days 6 hrs ago0x32c17851f003152494126d8af6aeda71474d02ed IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.008104677766 36.569000017
0xaadde38c008bbd24a05c13e2c13721f94b4f7a34d9ebd965cb87f579c7afa697Mint285656792022-05-20 23:01:215 days 6 hrs ago0x32c17851f003152494126d8af6aeda71474d02ed IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.006447599703 29.100000017
0xc8970a5cbed2c13b0b50d62ba1e187bca741dbd814418505226dc95805f72c82Mint285656792022-05-20 23:01:215 days 6 hrs ago0x32c17851f003152494126d8af6aeda71474d02ed IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.006445853703 29.100000018
0xb446986600c72dbf4c682017211d79e592c50cabcf95ba0c623c442809c711c8Mint285656792022-05-20 23:01:215 days 6 hrs ago0x32c17851f003152494126d8af6aeda71474d02ed IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000358090505 1.500000024
0x13fa8b9eb50c9b223fea46261bcc12e1f907710e273da1ffb7107bc4d588a3dfMint285656552022-05-20 22:59:455 days 6 hrs ago0x803861d4d6c98794529db6245adf95a8cc543e35 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.000448354538 1.500000129
0x6ab8c9127c5d2fff1ac69f1d29dfa4b80ef6fc442225343a46fc464bd3d1702cMint285129952022-05-19 15:29:206 days 13 hrs ago0xe11b1b7364d411dd015c1f65bc244271727128aa IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.013628238158 52.662803038
0x866eeb5a825997be1b897fca9f43d2c5f5682708cbbf0873e88f53d7e8bfc92aSet Approval For...284856162022-05-18 23:05:187 days 5 hrs ago0xda00e259e8b7cf565e11c0cb76471f757c856485 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00177241806533.076757771
0xbf6e4c34cdc59a715504ad6d182368bbaa93af41750ea1782b57d2b6f66c2d79Change Buying Co...284855282022-05-18 23:02:187 days 6 hrs ago0xda00e259e8b7cf565e11c0cb76471f757c856485 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00380204120533.076759571
0xcb6d3b929b22df02ccfc6fe89d8ea4ac731dad1ed6ce18b8d21bfe926e3c80c1Mint284855162022-05-18 23:01:547 days 6 hrs ago0xda00e259e8b7cf565e11c0cb76471f757c856485 IN  0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0 MATIC0.00799964737933.076759571
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0xcde0ffffaea1496bae37cb8b4f267e5e1bee096977cc7fc1f404132b8969dd6b268498762022-04-07 11:08:5448 days 17 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xea5bbad59c45a02ac0b0f48c9b4b7ccbccd73c362 MATIC
0xda4d9d5c94d5d222378e1f9a5ee34142ab30b494d3a00d1103e806e5e779a3da268497402022-04-07 11:04:1448 days 18 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xdaebe948c0604a19b9925db4de6bd423fc4fd2d81 MATIC
0x6c863307f6a56d917de696555a27f6dda50b2aae9df3902d512869f39855056b268497292022-04-07 11:03:5248 days 18 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xdaebe948c0604a19b9925db4de6bd423fc4fd2d81 MATIC
0xa65a7be1a8d6a1ee1999f285568d47271d68499eca5f1cf91697075c94d1f51c268495812022-04-07 10:58:0848 days 18 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x71dead07d6807c8afd2f52e2d0045939bacf673d1 MATIC
0xcca0faac2991eb2e8c4c8079d4982d6bfef611dd026800895850bd4e937f6ab6267743502022-04-05 13:16:4450 days 15 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x3be7a4e530ea856ab96f68f2b412b4c4ec19e16b0.2 MATIC
0xc4dfd3aa44580c1bed5169b3d26a84ffc0ab1ea975ca73d73fcfd74cbbb3e098267236432022-04-04 5:58:2451 days 23 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xce59ce5c811ba95498e4e0056c63b699e8f47d220.0001 MATIC
0x35700979a34be3e07b56ac900d83fc72645bf86f3157304519fea92fd0b0543a265255352022-03-30 4:18:0057 days 47 mins ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xce59ce5c811ba95498e4e0056c63b699e8f47d220.0001 MATIC
0x71e1572631e58d83e22a3e6ef418cd402b19705c8fe7ea21f36cf040b2d2b091265255352022-03-30 4:18:0057 days 47 mins ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xce59ce5c811ba95498e4e0056c63b699e8f47d220.0001 MATIC
0x6a943f393563a70f19f047139b52887c0869b021cbf94a8ceabf3ba6d487ed2c265008042022-03-29 12:57:5857 days 16 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xce59ce5c811ba95498e4e0056c63b699e8f47d220.0001 MATIC
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0xb14041a351c0b8a79cd87b264d359d339ebcf567f85ca6473aa5f051e4e14b4f264848692022-03-29 3:18:4158 days 1 hr ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x347f37f4ed042a208f1be1202aa0577b1d5f1a311 MATIC
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0xa0ee8ff5e2ebac71a5337f6a187fb447bb426f1b2131e063f35f2660150b185a264845082022-03-29 3:03:5558 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x7fc8318015819eed4a294336586a66a0c5483f631 MATIC
0xbf764fe98f37c949c4e09c111f4712f54ae21646fdb35c644215fe184a84e54b264843962022-03-29 2:58:0758 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x321df53adfc7cfa13cedad669bbf06b8013c7d5b0.1 MATIC
0x9bc66c3648d5f070ef94f133863cdae162d52b4f1e73ff3670fcdf6baec7b912264843942022-03-29 2:58:0358 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x5ba1cc771ba9241d0fc11e6e222450eedef4337a0.1 MATIC
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0xf0ca3040ab500de8554c59c9ef00686fd4a2238ef44f3f924219b70fca2f519e264843782022-03-29 2:57:3158 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x42cd6699444fb08253bdbc4bfc1166b1bcdb8a140.1 MATIC
0x7dbd5c2edfab80754d1ae95fa017e9aaf85440562f581962a2f111fcf070e353264843542022-03-29 2:56:4358 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xdac3eb0e30562f14e565c8c1ba713f58b9ea59a00.1 MATIC
0x5621ab4d7aa3eb0d364347ae1366964f7bda98ea72278cefaae6ef19c05ae732264843542022-03-29 2:56:4358 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0xebb27880e21b574e1aceef0f51cc972ded2f19be0.1 MATIC
0x0e269da048a2ae7a7f1944b6d25a2b4fbf938ac01b785e71c882de8c7fa95c0a264843332022-03-29 2:55:5758 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x9ce32b25a36280e89818c22e3b402e4357cba80f1 MATIC
0x33d072d72c451e7a7da988841d75ff0e8860385ca25f33cb829eb2901b98955f264843152022-03-29 2:55:2158 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x3923ad65d947e51a07aa480c108c7ae1a9271a661 MATIC
0x42a97021453304964a8bbb4c636fc2c59a6bb0c3c12ccda2cf9f6520b2be49a8264842902022-03-29 2:54:3158 days 2 hrs ago 0x6a9ab6e747699fb80e53b21b3bab24ee840fd1ff0x189e5caac4644fd5dfb958127e1e7000027ae51d1 MATIC
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x5841565Bd231a868e47347d9749eF06AF5cA0970

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, None license

Contract Source Code (Solidity)

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Contract Security Audit

Contract ABI

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

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Deployed ByteCode Sourcemap

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Swarm Source

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