Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• interface IERC20
•    - function transfer(address to, uint256 ...
•    - function transferFrom(address from, a ...
•  contract VirtualVersionsErc20Upgra ... *
•    - function version()
•    - function withdraw(address _token, add ...
•    - function upgrade(address _recipient, ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2024-03-13
*/

// SPDX-License-Identifier: MIT

pragma solidity =0.8.9;

interface IERC20 {
    function transfer(address to, uint256 amount) external returns (bool);
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

contract VirtualVersionsErc20Upgrader {
    address public constant BLACK_HOLE_ADDRESS = 0x000000000000000000000000000000000000dEaD;

    address public admin_;

    address public oldToken_;
    address public newToken_;

    function version() external pure returns (string memory) { return "VirtualVersionsErc20Upgrader v1"; }

    constructor(address _admin, address _oldToken, address _newToken) {
        require(_admin != address(0), "TA-5: zero admin address");
        admin_ = _admin;

        require(_oldToken != address(0) && _newToken != address(0), "TA-1: zero token address");
        oldToken_ = _oldToken;
        newToken_ = _newToken;
    }

    modifier onlyAdmin() {
        require(msg.sender == admin_, "TA-4: auth failed");
        _;
    }

    function withdraw(address _token, address _recipient, uint256 _amount) external onlyAdmin {
        require(IERC20(_token).transfer(_recipient, _amount), "TA-6: transfer failed");
    }

    function upgrade(address _recipient, uint256 _amount) external {
        require(_amount != 0, "TA-2: zero token amount");
        require(_recipient != address(0), "TA-3: zero recipient address");

        require(IERC20(oldToken_).transferFrom(msg.sender, BLACK_HOLE_ADDRESS, _amount), "TA-7: burn failed");
        require(IERC20(newToken_).transfer(_recipient, _amount), "TA-8: transfer failed");
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_admin","type":"address"},{"internalType":"address","name":"_oldToken","type":"address"},{"internalType":"address","name":"_newToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BLACK_HOLE_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"admin_","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"newToken_","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"oldToken_","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"upgrade","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000005f9b6c6510bf3c3f2fdfbcb526f5458a08f3fccf0000000000000000000000005c39ef4bda89a9d7edb18a16e53c97d5d32245f60000000000000000000000001f7e7a030aef0a0f600de1350c23d30b73fc7270

-----Decoded View---------------
Arg [0] : _admin (address): 0x5f9B6C6510BF3c3F2fDFBcB526F5458a08f3fccf
Arg [1] : _oldToken (address): 0x5c39ef4bda89a9D7EDB18A16E53c97D5D32245F6
Arg [2] : _newToken (address): 0x1f7e7a030aEF0A0f600dE1350c23D30B73fC7270

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000005f9b6c6510bf3c3f2fdfbcb526f5458a08f3fccf
Arg [1] : 0000000000000000000000005c39ef4bda89a9d7edb18a16e53c97d5d32245f6
Arg [2] : 0000000000000000000000001f7e7a030aef0a0f600de1350c23d30b73fc7270

257:1405:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;428:24;;;;;-1:-1:-1;;;;;428:24:0;;;;;;-1:-1:-1;;;;;178:32:1;;;160:51;;148:2;133:18;428:24:0;;;;;;;;459;;;;;-1:-1:-1;;;;;459:24:0;;;302:87;;347:42;302:87;;492:102;551:40;;;;;;;;;;;;;;;;492:102;;;;551:40;492:102;:::i;398:21::-;;;;;-1:-1:-1;;;;;398:21:0;;;1052:187;;;;;;:::i;:::-;;:::i;:::-;;1247:412;;;;;;:::i;:::-;;:::i;1052:187::-;996:6;;-1:-1:-1;;;;;996:6:0;982:10;:20;974:50;;;;-1:-1:-1;;;974:50:0;;1796:2:1;974:50:0;;;1778:21:1;1835:2;1815:18;;;1808:30;-1:-1:-1;;;1854:18:1;;;1847:47;1911:18;;974:50:0;;;;;;;;;1161:44:::1;::::0;-1:-1:-1;;;1161:44:0;;-1:-1:-1;;;;;2132:32:1;;;1161:44:0::1;::::0;::::1;2114:51:1::0;2181:18;;;2174:34;;;1161:23:0;::::1;::::0;::::1;::::0;2087:18:1;;1161:44:0::1;;;;;;;;;;;;;;;;;::::0;::::1;;;;;;;;;;;;::::0;::::1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;1153:78;;;::::0;-1:-1:-1;;;1153:78:0;;2703:2:1;1153:78:0::1;::::0;::::1;2685:21:1::0;2742:2;2722:18;;;2715:30;-1:-1:-1;;;2761:18:1;;;2754:51;2822:18;;1153:78:0::1;2501:345:1::0;1153:78:0::1;1052:187:::0;;;:::o;1247:412::-;1329:12;1321:48;;;;-1:-1:-1;;;1321:48:0;;3053:2:1;1321:48:0;;;3035:21:1;3092:2;3072:18;;;3065:30;3131:25;3111:18;;;3104:53;3174:18;;1321:48:0;2851:347:1;1321:48:0;-1:-1:-1;;;;;1388:24:0;;1380:65;;;;-1:-1:-1;;;1380:65:0;;3405:2:1;1380:65:0;;;3387:21:1;3444:2;3424:18;;;3417:30;3483;3463:18;;;3456:58;3531:18;;1380:65:0;3203:352:1;1380:65:0;1473:9;;1466:71;;-1:-1:-1;;;1466:71:0;;1497:10;1466:71;;;3800:34:1;347:42:0;3850:18:1;;;3843:43;3902:18;;;3895:34;;;-1:-1:-1;;;;;1473:9:0;;;;1466:30;;3735:18:1;;1466:71:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;1458:101;;;;-1:-1:-1;;;1458:101:0;;4142:2:1;1458:101:0;;;4124:21:1;4181:2;4161:18;;;4154:30;-1:-1:-1;;;4200:18:1;;;4193:47;4257:18;;1458:101:0;3940:341:1;1458:101:0;1585:9;;1578:47;;-1:-1:-1;;;1578:47:0;;-1:-1:-1;;;;;2132:32:1;;;1578:47:0;;;2114:51:1;2181:18;;;2174:34;;;1585:9:0;;;;1578:26;;2087:18:1;;1578:47:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;1570:81;;;;-1:-1:-1;;;1570:81:0;;4488:2:1;1570:81:0;;;4470:21:1;4527:2;4507:18;;;4500:30;-1:-1:-1;;;4546:18:1;;;4539:51;4607:18;;1570:81:0;4286:345:1;1570:81:0;1247:412;;:::o;222:597:1:-;334:4;363:2;392;381:9;374:21;424:6;418:13;467:6;462:2;451:9;447:18;440:34;492:1;502:140;516:6;513:1;510:13;502:140;;;611:14;;;607:23;;601:30;577:17;;;596:2;573:26;566:66;531:10;;502:140;;;660:6;657:1;654:13;651:91;;;730:1;725:2;716:6;705:9;701:22;697:31;690:42;651:91;-1:-1:-1;803:2:1;782:15;-1:-1:-1;;778:29:1;763:45;;;;810:2;759:54;;222:597;-1:-1:-1;;;222:597:1:o;824:173::-;892:20;;-1:-1:-1;;;;;941:31:1;;931:42;;921:70;;987:1;984;977:12;921:70;824:173;;;:::o;1002:328::-;1079:6;1087;1095;1148:2;1136:9;1127:7;1123:23;1119:32;1116:52;;;1164:1;1161;1154:12;1116:52;1187:29;1206:9;1187:29;:::i;:::-;1177:39;;1235:38;1269:2;1258:9;1254:18;1235:38;:::i;:::-;1225:48;;1320:2;1309:9;1305:18;1292:32;1282:42;;1002:328;;;;;:::o;1335:254::-;1403:6;1411;1464:2;1452:9;1443:7;1439:23;1435:32;1432:52;;;1480:1;1477;1470:12;1432:52;1503:29;1522:9;1503:29;:::i;:::-;1493:39;1579:2;1564:18;;;;1551:32;;-1:-1:-1;;;1335:254:1:o;2219:277::-;2286:6;2339:2;2327:9;2318:7;2314:23;2310:32;2307:52;;;2355:1;2352;2345:12;2307:52;2387:9;2381:16;2440:5;2433:13;2426:21;2419:5;2416:32;2406:60;;2462:1;2459;2452:12;2406:60;2485:5;2219:277;-1:-1:-1;;;2219:277:1:o

ipfs://75c8f356c70b78ec9c3e733eb486357d9a97b6d5a11d6a5a9886b000b1215d96