Contract 0xBD5ca837C759B429398dc55b643f1Dd8d0D72CbD 1

 

Contract Overview

Balance:
0 MATIC

MATIC Value:
$0.00

Token:
 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0x3ef411fe69ed23f80fabb4b84102e0820333a60d690c4976b42d4a493dccc0d5Add Liquidity357552002022-11-18 9:12:0719 days 18 hrs ago0x489d410a49aa5c6723eadb0aedfea90d49315e8a IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.0106907100
0x2bc74529c326bcd6629fe377454c72475483501fac7cb849ea3a17a8544a0deeAdd Liquidity ET...348644052022-10-27 13:28:0341 days 14 hrs ago0xa15d0550813a979030f1f69bf151c188a9bce923 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd4 MATIC0.0191279341133.1
0xa463eb4d53d3ada23938abc91ff07eb417bc3b3c79ff3565678c9a1186307a5cAdd Liquidity ET...340568972022-10-07 19:43:5261 days 8 hrs ago0x0150c608a25176c08d9bc8b43d0dc64e4c9f4a58 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd5.5 MATIC0.0043113330
0x598b899a293a68643b59a40e1add7fc0ac81925f2cab2c97b00e1aa3bd7573a5Remove Liquidity331724402022-09-16 9:17:2682 days 18 hrs ago0x1f69ee6c9db214362368608cd7d886cc64142270 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00593082633
0x835067dcf7f1e2370f7a3564be82be447f59881245017717b6c51b75fecf8385Add Liquidity308967002022-07-19 12:03:14141 days 15 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008118467134 50.48609588
0x92c62233cbd703e1b292fdc92960377c48a57752dd7f3d237eae7d5aa9d6578cRemove Liquidity308964002022-07-19 11:50:50141 days 16 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.009040771914 50.13459721
0x19618d4dbf2d89cec7a89a22551a728053a4ab1a42a4a311562b755a4c6b92b3Add Liquidity308960872022-07-19 11:37:56141 days 16 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008661959408 50.03847012
0x742c406bac36e1eece28a4d7aa6f8090f5cdda659964ae364a9c439c4b0db739Swap Exact Token...308959482022-07-19 11:33:10141 days 16 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.005982288934 50.087401182
0x187770fb1cb7b61294769ec7b8c8735cd7e6180af1a1f1efbbb61ea78e94fe38Add Liquidity ET...308946592022-07-19 10:44:33141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.0160811 100
0xec546adbea58bd2cd101060ed63711a64c34a5d180ab180adc4274553a46a5e1Remove Liquidity308945792022-07-19 10:40:57141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.009646229995 57.281650803
0xa82e19f8f2808127adb1e4f3f8a0a0aa9beb46081eac61230f43110c55a1a80aRemove Liquidity308942702022-07-19 10:26:51141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008990642239 50.025273696
0xdedb728b0d3ba0ce4cd81c6d1d4eda744b8be08d7777f8f421f5bca8de7d8a9aAdd Liquidity308940492022-07-19 10:17:09141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00867662886 50.066813583
0x2efa7f26b324a728f4a17662ae68ebb84285ef5451adb60c45749a91ca1a173aRemove Liquidity308938082022-07-19 10:08:51141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008151778298 52.546351879
0x1eac3bd1aa9a164ab01aba7b28ad78045ab4141329e3573a51554fefd9018d92Add Liquidity ET...308935882022-07-19 10:01:19141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.008634155062 53.691321258
0xbe2e89a57147919fd6875baaaa08ba905c68f455a72a361fca6397e353efdc87Remove Liquidity308935412022-07-19 9:59:41141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.009113552008 58.745943907
0x130a127d9bed3111b46a3cbb10b1aeee93bb8bfa49e88b4e780b1cca91c75367Add Liquidity ET...308934822022-07-19 9:56:15141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd1 MATIC0.008769473279 54.532794893
0x85f6f8ae3a3fc19b3056a39fd751e89341b2d91c0390dda24616ca5c69c845a5Remove Liquidity308934592022-07-19 9:53:57141 days 17 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.007806330742 50.31570538
0xa2bc0d08e9960f3e60dc168c5482103b568e974da99627f796102778ef3ed8ebRemove Liquidity308930432022-07-19 9:38:17141 days 18 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008611752226 50.000012927
0xe11a43a53dfe7075dac3a5d0100ce5aecf2296be884d3f1ad3891cb62d5a96b8Remove Liquidity308930092022-07-19 9:37:09141 days 18 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.006633102316 50.00001746
0x207a952af5376b72a58ca0c8289643e40ce253e72e270ff837d2965aeef4450aRemove Liquidity308929512022-07-19 9:35:09141 days 18 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.005991403818 50.00003187
0xf6c256b444028355db44398b45180a70544c78b64e53fbbd2568db2f87a9e6a9Remove Liquidity308928542022-07-19 9:31:47141 days 18 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.006127808299 50.000067718
0x66666f741848f662727c094187ac20a6482f2b0006f98d56ecb64108247eed44Remove Liquidity308919462022-07-19 8:56:19141 days 18 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.008236750763 50.000004635
0xc80438e6871cc7be1917830ca039ea9b4b81fc40551805bb1dd46e94414e05ebRemove Liquidity308916892022-07-19 8:46:45141 days 19 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.00933307342 50.000393336
0x1a4df50e5f7d249a320f005f94e6b91255511cfecf8dc9eb7d36b53cb7c6ea1bRemove Liquidity308907712022-07-19 8:13:49141 days 19 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.003982297298 30.018372243
0xe9bd06bfc1c9240603055cc67f81fa305280e8b6fba9eb625994d7b3180291c9Remove Liquidity308900772022-07-19 7:47:39141 days 20 hrs ago0x97281d9da948509a271d84d11fbcf0377b130515 IN  0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd0 MATIC0.005579928615 41.191836943
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x2bc74529c326bcd6629fe377454c72475483501fac7cb849ea3a17a8544a0dee348644052022-10-27 13:28:0341 days 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad94 MATIC
0xa463eb4d53d3ada23938abc91ff07eb417bc3b3c79ff3565678c9a1186307a5c340568972022-10-07 19:43:5261 days 8 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad95.5 MATIC
0x187770fb1cb7b61294769ec7b8c8735cd7e6180af1a1f1efbbb61ea78e94fe38308946592022-07-19 10:44:33141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x1eac3bd1aa9a164ab01aba7b28ad78045ab4141329e3573a51554fefd9018d92308935882022-07-19 10:01:19141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x130a127d9bed3111b46a3cbb10b1aeee93bb8bfa49e88b4e780b1cca91c75367308934822022-07-19 9:56:15141 days 17 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x41643810038595b5d805e60403025202241b75489bdafc969c2389415e3264b5308899742022-07-19 7:44:05141 days 20 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x506549d9cec44fd60b44765d8bbca529f460b1b52cc94cf50c0cb6f0748ab7ae284624572022-05-18 8:54:29203 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.01 MATIC
0x7fea13dbe6df11c6c4c5b76902d02108e45e2e8c709246eef7a7437b47afea3d283834132022-05-16 9:18:04205 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.1 MATIC
0xc4c14b7d6f0a161ab105fe2277306e3cf26cf1702263781f40b24edd17645e0a267566072022-04-05 2:28:08247 days 1 hr ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad937.99343391290947 MATIC
0x7c7ade2494e20338fd56abb37b206da444060d53a407d3b2b2f93e1487bf9666249478752022-02-14 22:45:14296 days 5 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad965.42121279999999 MATIC
0x646ea07db0502fe2ba7a9d9a1aa3b43c8e66874447ca58ffc387c3f11f8b6ee7242118952022-01-27 4:19:55314 days 23 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad965 MATIC
0x2958c05246aca044fd9ab9047bdb0e086cdd304d6e0ac3ee3030cec8fee4e3f2237477002022-01-15 12:59:52326 days 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad910 MATIC
0x22d70e0a9839cb26540147421423b6172c529a3142a45bdab93ff22dc3fe09fd231013792021-12-29 11:27:00343 days 16 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad95 MATIC
0xad9f6afb54f10d86b019f8d6be79c8038cfbb2cef591fc26e638448fb53bfcbe230575732021-12-28 9:18:11344 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad910 MATIC
0xc38c994d11faf3265d7344ccfded7df565bcfcdfc2dde4e43149db41c0bec01b228081542021-12-22 0:17:15351 days 3 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.1 MATIC
0x131db9cada9c2b859797ce698b8aa1755d787f4d320a756d81f8158f69867035228081532021-12-22 0:17:13351 days 3 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.2 MATIC
0xc5c5915e0a20493957129eaaeda817b49d8cb3f07b0fb039f7ef0e25172e2002227132272021-12-19 14:41:09353 days 13 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad915 MATIC
0x4dc68ce6b1e67b724761dd439f1be3483b612dcf379ec661f9e1ad728c595b81226429242021-12-17 19:53:59355 days 7 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.00001 MATIC
0x8cbff588181cda5ba20a82af7cdbd3b38c724fd9e22777f951e2a7e79cf56e1c224749822021-12-13 11:59:54359 days 15 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad920 MATIC
0x478c31c109ede69d20dfe6ddf57ee778752aa30f0add1f037b1943c71ce8896d224036842021-12-11 16:54:21361 days 10 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad961.462887301475426 MATIC
0xb7d7844a12fe135b7753fcd6ccec0946526bade8e105d85ab281cecaeed051ae223527142021-12-10 9:51:24362 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.00001 MATIC
0x5efa1e257cafceacf22d99ba965441fce3449ac36a9faddd1fafe0890449041d222788092021-12-08 13:21:51364 days 14 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.059307000000000006 MATIC
0x4ed753f15780a304656915d64bbee14630b83ce00c0a828f4594406ce2b7db66222721772021-12-08 9:08:33364 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0xa396b4b1e4fd6deedc0eb09d05cb0ac555f961ff38645c3bddaf4cd97c4524d5222721492021-12-08 9:06:41364 days 18 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad91 MATIC
0x006e60a4ac6952b31a701e103f757d5eea1166bd4d4af7b54daa25905e47c555222537382021-12-07 21:00:08365 days 6 hrs ago 0xbd5ca837c759b429398dc55b643f1dd8d0d72cbd 0x3826367a5563ece9c164eff9701146d96cc70ad90.001 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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