Contract 0xd4a57a3bD3657D0d46B4C5bAC12b3F156B9B886b 3

Contract Overview

Balance:
18 wei

Token:
Txn Hash
Method
Block
From
To
Value
0xd39ef03231660b3014569b38d6138f4920f354bcd2c3e19c1eafb3a42cc15bcdMatch Orders114721252022-09-30 19:33:143 hrs 18 mins ago0x50d92dd8a0621bfb874959b2b7795901878c8065 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.01 Ether0.00040371 1
0xf510d1ce85aa2d1fc62f183fcb0542c545393caa73e276b6667188f02eb7baacCancel114708312022-09-30 14:06:018 hrs 45 mins ago0xce810deaa3a108e00e41f176c751e0648d8b2f4f IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00006318 1
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553Match Orders114702682022-09-30 11:40:1311 hrs 11 mins ago0x9045fd84e8607d3682f93e878ff884b5ed0db63f IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.01 Ether0.000297881.50494134
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0xfb0705c713360872bd2193b575aee194189f953988da0f47fa7936990bf14353Cancel114702042022-09-30 11:23:5911 hrs 27 mins ago0x07678b365ddd8242c3b087b7b1ec0f14926f64a5 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00014855 2.38472174
0xf91fbaa5fd3a42f900241aab4b28183f5b528a81981e3a783188770804d97c09Cancel114698182022-09-30 9:45:3313 hrs 5 mins ago0xca8ea83f10b7098e989293c0b638048d0eed38ae IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00014222 3.14758279
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a60x0d5f7d35114697222022-09-30 9:21:1313 hrs 30 mins ago0xcb525c5e60ef37f5f7fb57233c7ee1338edc4ead IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b1.025 Ether0.00419645 22.69898165
0x220d6ec5193e32e945e6a248dde318adc989627fc06ac4d03595eb7e4901076eCancel114695412022-09-30 8:34:1414 hrs 17 mins ago0x33811656c46f0fc523359b5fe1967c976ba24579 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00020773 3.27510103
0x5025b4c07df09718daba01b8ddb2f8d56eab2dcdffb0030953a5ebab6ce84b330x0d5f7d35114695262022-09-30 8:30:2014 hrs 20 mins ago0x701176c6c43f41804de1246776cd424c9fc5de05 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.001025 Ether0.00057309 3.20609145
0xb5b9532bc0c80812f3784c353b289805c28badcb4d867a5dceffc25b909124aeCancel114694962022-09-30 8:22:3214 hrs 28 mins ago0x20ce009720e38b61aab1294bdf82315f164cbd23 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.000151342.439759
0x1b6a7fa6c70b09731e2782f49505caddd9e4108e88d2a8934454eb2728e394bb0x0d5f7d35114694872022-09-30 8:20:1714 hrs 30 mins ago0x07678b365ddd8242c3b087b7b1ec0f14926f64a5 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00205 Ether0.00057515 2.36595196
0x4b8d78c90e8bf64d8fcb93084a974e2bc5da1a6b51ce2283819a3bee566e20940x0d5f7d35114694772022-09-30 8:17:4714 hrs 33 mins ago0x07678b365ddd8242c3b087b7b1ec0f14926f64a5 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.001025 Ether0.00052168 2.04905527
0xe1dd5c2388f451f28837ca27a2052258f1dc37a400681b775464b6fad45cc343Cancel114694692022-09-30 8:15:3614 hrs 35 mins ago0xca8ea83f10b7098e989293c0b638048d0eed38ae IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00011753 1.86609123
0x18df8af740669c393ecb8ddea1e26aa97d647e82e21248782af3cbf42e584195Cancel114693472022-09-30 7:44:3815 hrs 6 mins ago0x20ce009720e38b61aab1294bdf82315f164cbd23 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.000093341.50457534
0xf9d106586160f12c67041936c7c4c277d4ca66d4880768e8512c83980888812eMatch Orders114692582022-09-30 7:22:1915 hrs 28 mins ago0x940453458c3ad11c251dd5a6c8374ecc284d546f IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00034058 1.50063652
0x7c4213d31155aa52811d4a2cec9780d13cdea9e17ceca1a1e14924a47ff3b8eeMatch Orders114692372022-09-30 7:17:0215 hrs 34 mins ago0x8baa54f661400d673619b47c2c206372366c61c1 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00038305 1.50048817
0x3014a615ec8ca71d6a79df36a9525c8cf991bfc6e928e511f88d262a4198ea07Cancel114691912022-09-30 7:05:2915 hrs 45 mins ago0x940453458c3ad11c251dd5a6c8374ecc284d546f IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.0000945 1.50017733
0x2cee2c3c128977ed838f591d342d4c71ce4d973269f2c0397405226f8a350df30x0d5f7d35114690882022-09-30 6:39:3716 hrs 11 mins ago0x049dd2361726b60ae2a9b55d3c080cebe1bf0f94 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00000102 Ether0.00032886 1.5000247
0xa9be07a4af56b72dc4e7d773cf286a069f642081367ad0c2557cd40b7917c6f9Cancel114689602022-09-30 6:07:2916 hrs 43 mins ago0xca8ea83f10b7098e989293c0b638048d0eed38ae IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0 Ether0.00009447 1.50000172
0xe64a5542160797dbf3eddedf0c8e1007ec63b94b726e278f0737cab7e928d1d90x0d5f7d35114688542022-09-30 5:40:3517 hrs 10 mins ago0x07678b365ddd8242c3b087b7b1ec0f14926f64a5 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.001025 Ether0.00036465 1.5000006
0x3e5733ac68d3129ea01a0d7dd85c9705867515ad35561debb9dfe381741c2a240x0d5f7d35114686432022-09-30 4:47:3118 hrs 3 mins ago0x4bf685ce285edd1666ee0149a1393d56762a1b27 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00001025 Ether0.00057199 1.50024249
0x9761c337b95013043f9a2b0d4a70aa2d114c6c2c0018fb95b50fff62446d702e0x0d5f7d35114686412022-09-30 4:47:0118 hrs 4 mins ago0x4bf685ce285edd1666ee0149a1393d56762a1b27 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00001025 Ether0.00057196 1.50024716
0x4403c81b5a5ca73c8133afe56efe8392d05e8b1cf988e929d909101eee692d3f0x0d5f7d35114686392022-09-30 4:46:3118 hrs 4 mins ago0x4bf685ce285edd1666ee0149a1393d56762a1b27 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00001025 Ether0.00057197 1.50023817
0x675eb11535d7fe4143e2330cdc7254d8c5bc4fd0120b0aea93b281dc349c9b830x0d5f7d35114686372022-09-30 4:46:0118 hrs 5 mins ago0x4bf685ce285edd1666ee0149a1393d56762a1b27 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00000102 Ether0.00057197 1.50023938
0x76b58c05678a9dc75b07fff048ae4b2da9dcbf7445c10c0e2e2ac21f0fb66cfa0x0d5f7d35114686352022-09-30 4:45:3118 hrs 5 mins ago0x4bf685ce285edd1666ee0149a1393d56762a1b27 IN  0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0.00000102 Ether0.0005719 1.50023421
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0xd39ef03231660b3014569b38d6138f4920f354bcd2c3e19c1eafb3a42cc15bcd114721252022-09-30 19:33:143 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0x75fdbe19c2dc673384ddc14c9f453db86f5f32e80 Ether
0xd39ef03231660b3014569b38d6138f4920f354bcd2c3e19c1eafb3a42cc15bcd114721252022-09-30 19:33:143 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x50d92dd8a0621bfb874959b2b7795901878c80650.01 Ether
0xd39ef03231660b3014569b38d6138f4920f354bcd2c3e19c1eafb3a42cc15bcd114721252022-09-30 19:33:143 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0xf510d1ce85aa2d1fc62f183fcb0542c545393caa73e276b6667188f02eb7baac114708312022-09-30 14:06:018 hrs 45 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0x7d47126a2600e22eab9ed6cf0e515678727779a60 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x5b36a22551eabf00902a10f2c6659a6b95da9fe80.00975 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x76c5855e93bd498b6331652854c4549d34bc3a300.00025 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xda8e7d4cf7ba4d5912a68c1e40d3d89828fa6ee80 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x00000000000000000000000000000000000000010 Ether
0x8a6fc6982ba10dd26ba7c7d483e74cd3aa0f0e7946af28e342f8e9b07581b553114702682022-09-30 11:40:1311 hrs 11 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0x0cf0aab68432a3710ecbf2f1b112a11cee31a83c0 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0xa556c2a234705c8e59499a97ba185cbf97a03f750.0008825 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x3a1722db06f315848ded2e627fad3ac82acf964d0.0000175 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0xa556c2a234705c8e59499a97ba185cbf97a03f750.0001 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x00000000000000000000000000000000000000010 Ether
0x9d3c0deebe3b369a154d4a27cb59758ead15ca624752b6af6fbfe38749028073114702382022-09-30 11:32:3911 hrs 18 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0xfb0705c713360872bd2193b575aee194189f953988da0f47fa7936990bf14353114702042022-09-30 11:23:5911 hrs 27 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0xf91fbaa5fd3a42f900241aab4b28183f5b528a81981e3a783188770804d97c09114698182022-09-30 9:45:3313 hrs 5 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0x7d47126a2600e22eab9ed6cf0e515678727779a60 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x299c92988198a5965111537797cc1789a5d7e3360.975 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x76c5855e93bd498b6331652854c4549d34bc3a300.05 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xda8e7d4cf7ba4d5912a68c1e40d3d89828fa6ee80 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b0x00000000000000000000000000000000000000010 Ether
0x3afd01fc0de879815b062ab2d9f50234add5167dc6562a09108b86066bb966a6114697222022-09-30 9:21:1313 hrs 30 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
0x220d6ec5193e32e945e6a248dde318adc989627fc06ac4d03595eb7e4901076e114695412022-09-30 8:34:1414 hrs 17 mins ago 0xd4a57a3bd3657d0d46b4c5bac12b3f156b9b886b 0xdeabc9e9339c42a16da39ac1b18b6d42fa06423b0 Ether
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xC642ef7021597DfAcD125BB87AE1D1b91F2dB5eB

Contract Name:
TransparentUpgradeableProxy

Compiler Version
v0.8.2+commit.661d1103

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 7 : TransparentUpgradeableProxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC1967/ERC1967Proxy.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 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();
    }
}

File 2 of 7 : ERC1967Proxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../Proxy.sol";
import "./ERC1967Upgrade.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.
 */
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();
    }
}

File 3 of 7 : Proxy.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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 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 {
    }
}

File 4 of 7 : ERC1967Upgrade.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @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;
    }
}

File 5 of 7 : IBeacon.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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);
}

File 6 of 7 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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) {
        // 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);
            }
        }
    }
}

File 7 of 7 : StorageSlot.sol
// 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
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.