Contract 0x756e4f3bb69c47d492abf2a52af320190c174c55

 
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Block
From
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0x14e947977faae97cc4a9a8daacf0fad9f00f8b48fb0a3cbcecd3a40d03952e32Set Approval For...434363152022-12-04 4:53:461 day 16 hrs ago0xf37fefd845475a5390cdb8fc873737d01b5c962f IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001993
0x34a6d2f262901e5c1cfda196e107406e0db0eb2b7eeb31e1a7b8022267d30286Set Approval For...426566252022-12-01 8:53:144 days 12 hrs ago0x657337fe58c248edf101d07d5410e0b6e578ee82 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001935
0x101034b5af25ad760476485bc345bdd768c711326656685c884fe3f0ccf8c5c4Set Approval For...424372282022-11-30 12:43:455 days 8 hrs ago0xcb3b366ced5ab2170d2ac72a5a97c4747e9186d8 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001927
0xb2505f7410600f1787d50ddb4ec697d4e353659d7598faae8c9660d8f9a5435cSet Approval For...419448722022-11-28 18:06:577 days 3 hrs ago0x275eb69f5778c4f8ac753f16edc24139ee1fac30 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00003446
0xeddcc7a80acea2fc1d0568e5a17bb943d78c4f3fa4fb6d20aeb6e4c6a7b353aeSet Approval For...407913232022-11-24 10:04:5311 days 11 hrs ago0x29ce7699bf63fa78f7f2415eeec5f5b6e2895d7c IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002139
0xd1ab274255ceb6d15236b9444a5a0d7ef377154aaaeee1b3275c7e84b18bc217Set Approval For...407483042022-11-24 6:39:2311 days 14 hrs ago0x6213031a64d1c6f67b1231940c4312a52417eeac IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.0000187
0x2397516ff3e580fb9b5b0bd18bd3a0686c8165c6a6fa1f2d8fbaf19c764059b0Set Approval For...404543652022-11-23 5:44:2512 days 15 hrs ago0xb32e81bed17ba11e28c098853ec1915dd98b8e19 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002049
0xb9b3c146a7de53e082e639bd5ff92af082f7b6830091e291cc200c88a62e1c3cSet Approval For...402903742022-11-22 15:53:0913 days 5 hrs ago0xca5a2d2170db09a2310fef143f49d33bedcd6540 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.0000277
0xb419dc402d1054fe9302c730cf16ca047c67daf9b03ef1154d5fe4f82248d0a1Set Approval For...397253192022-11-20 19:29:5315 days 2 hrs ago0x1ae8e62b89811de66597372418985c6bfccc5682 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002182
0xb4989d3d5385d67e0b2d129945c73e56da1c973ca35b80cac484633f7d6dfb59Set Approval For...359240732022-11-07 5:55:4828 days 15 hrs ago0xeb747c058d04534a2aaea82000fc55b9059dc941 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001926
0x4e1278e5d0556c4337aa80acdbc8800f718864566d451fe8fe757d673266bc11Set Approval For...352469432022-11-04 17:06:4731 days 4 hrs ago0x124a2df3fa0702bfdc822ddd2c5d38a3500d3613 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.0000392
0xb89f848690e17efe5bed429071d07d7aa50cad81bbc4b9f2d10d1642bff97f00Set Approval For...347162342022-11-02 14:12:3033 days 7 hrs ago0x5b00f3d1644ff3106248b2c50505a67abf31efff IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001848
0x833587b9e9f0e3ffbef96376b3f363f7c2892396615b84fb170997e3e0af0630Set Approval For...335046092022-10-29 3:52:2637 days 17 hrs ago0x3de8e558498b5fec6596aabba7199be553fdb723 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00001507
0x23fdcae968d24983e83d6fa21a3e5f4ae8abdf10b859b34e39814c10b44c4817Set Approval For...334154692022-10-28 18:48:5038 days 2 hrs ago0x43a20a80e7e61b77ec834c1a9f7435df0dd11b49 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00004634
0xcad594ddce2997919f68b5bd3de375d2da51722e24bb5d23ace1334ee4ef17b0Set Approval For...328077892022-10-26 17:07:5740 days 4 hrs ago0x3a63a5b490033cc89361578ecad220890f7f894b IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00003854
0x8f085abd2295e4732729a998c90a97d63ebb6b5fc8adb2da9fcefd6d78c572f2Set Approval For...322058952022-10-24 13:00:5542 days 8 hrs ago0xf6ceecf804eb2e0add76f1f8e00ca903fa30ffd5 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002149
0x3ab4b69d35bd6272c11cc050e0074d35c6f649b59d1512cf273d92c3f88134c2Set Approval For...311496132022-10-20 1:39:3146 days 19 hrs ago0xff9528c2ecb1e121deb892034be165c2551bab4b IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00003794
0xb55ca17a0b3a5293aeb8c5daedeba15e7afcb3b077977b17952b6097f46f68c8Set Approval For...311000302022-10-19 20:39:3647 days 56 mins ago0x66edf605398f2ff73d133979152db3c9f066d4e7 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00005574
0xfa43cc8f5d134c870de6a090151ce7c0ae95d1b0222d621a4a84e028e95c5882Set Approval For...310472822022-10-19 15:51:5747 days 5 hrs ago0x50d229b19afe670ef4adf092d8a66be0be471039 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00004681
0x3f1273d03381f54792903da205169163e01321b8f67f6882fb3a7e43f31fd554Set Approval For...307165522022-10-18 6:32:2648 days 15 hrs ago0x0d6742a951f7778fc136e1794d748448b27064ea IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002213
0x02d77baabb6a4dea316b2540fc3c63f71f69e251078b7a95cd3546e071a3a874Set Approval For...303677692022-10-16 8:26:2850 days 13 hrs ago0x086c4efbafd8f3f400d94289a0d7bc943af425fc IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002046
0xa04ccb623f6302fb92d6f67029b50e27c44f61572b3ac3c35620b73a94554fb1Set Approval For...302847322022-10-15 18:00:5051 days 3 hrs ago0x4f82c7a14540e1b2f6a13d56c77a1cd935a61291 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00002838
0x712a8f7f023e6d1241220bc750ceae55dac013984109dd0a034ec753c3514b63Set Approval For...295787112022-10-11 14:59:0455 days 6 hrs ago0x4ca4c1539b116030ac3acaae309f37ee82655ac7 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.0000368
0xa71c76a575b7d26fe4466eebdf478befa4efd7513607a62fd84149d1992b74dbSet Approval For...294361432022-10-10 16:31:2756 days 5 hrs ago0xca58a558a70c14c65d12ebe035bbe1d2d9e90bee IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00004742
0xe2891282063778d7111f6cb4e4b2124cfaa5b39e3948fc8f754c02d99da1b38bSet Approval For...293327552022-10-09 23:34:0056 days 22 hrs ago0x57f731154ca6a11615ac9222e75404bb6f78baa7 IN  0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH0.00006093
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Latest 25 internal transaction
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0xd452f2a8fff70653bde4544132f4655600038e90d20fbcce3786fb5ffa5eefbe439160772022-12-05 21:35:5434 secs ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xd452f2a8fff70653bde4544132f4655600038e90d20fbcce3786fb5ffa5eefbe439160772022-12-05 21:35:5434 secs ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0x0d722fc5e57ef3ace5e7397cb98b8be939e8a36ff535b12e19e2ec0e38c3e723439160542022-12-05 21:35:4741 secs ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xb9047b2ac7918a1fc42136ba721067ce9a59d5958d392979acf161d1ce26b742439157532022-12-05 21:34:092 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0x2648bae1b4d74c3c5c7da20604b530898d365316e912f581a7282831d724427f439156692022-12-05 21:33:382 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0x2648bae1b4d74c3c5c7da20604b530898d365316e912f581a7282831d724427f439156692022-12-05 21:33:382 mins ago 0xa5447d47bfd314c205bfaec8eb0a66af8f467819 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0xc691baf2319f66a13ac8fae831c87aa0fdc95ba4ea04999d5034da2f2f7ca8cf439147092022-12-05 21:28:377 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
0xc691baf2319f66a13ac8fae831c87aa0fdc95ba4ea04999d5034da2f2f7ca8cf439147092022-12-05 21:28:377 mins ago 0x69540403fb839696c6bc02dff7623d664caeac82 0x756e4f3bb69c47d492abf2a52af320190c174c550 ETH
0x8c5ed242258ee3bb73f0b83311db616e0688dc031dc599e2963dcb2956cdba56439143422022-12-05 21:26:409 mins ago 0x756e4f3bb69c47d492abf2a52af320190c174c55 0xbcb6343651dbefbecd732a3b916840311609245f0 ETH
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0x6F4e8eBa4D337f874Ab57478AcC2Cb5BACdc19c9

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 999999 runs

Other Settings:
default evmVersion, MIT license
File 1 of 4 : Proxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @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 {
        // 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 virtual view 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 {
        _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 () payable external {
        _fallback();
    }

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

File 2 of 4 : TransparentUpgradeableProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "./UpgradeableProxy.sol";

/**
 * @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 inerface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address initialLogic, address initialAdmin, bytes memory _data) payable UpgradeableProxy(initialLogic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(initialAdmin);
    }

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

    /**
     * @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 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

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

    /**
     * @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) {
        return _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 ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(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 {
        _upgradeTo(newImplementation);
    }

    /**
     * @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 {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success,) = newImplementation.delegatecall(data);
        require(success);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }

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

File 3 of 4 : UpgradeableProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "./Proxy.sol";
import "../utils/Address.sol";

/**
 * @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.
 * 
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @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));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }

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

    /**
     * @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 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal override view returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     * 
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}

File 4 of 4 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

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

Settings
{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract ABI

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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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