Contract

Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• interface IERC20
•    - function transfer(address recipient, ...
•  contract SimplePresaleContract *
•    - function forwardFunds()
•    - function calculateTokenAmount(uint256 ...
•    - function setCurrentStage(uint256 _sta ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2024-01-13
*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

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

contract SimplePresaleContract {
    address payable public owner;
    IERC20 public token;
    uint256 public currentStage;

    // Pricing for each stage
    uint256[8] private stagePricing = [700, 770, 847, 932, 1025, 1128, 1241, 1365]; // Prices in some unit, e.g., $0.00700 as 700

    event BuyWithETH(address indexed buyer, uint256 ethAmount, uint256 tokenAmount);

    constructor(address _tokenAddress) {
        owner = payable(msg.sender);
        token = IERC20(_tokenAddress);
    }

    // Fallback function to handle receiving Ether
    receive() external payable {
        uint256 tokensToDistribute = calculateTokenAmount(msg.value);
        require(token.transfer(msg.sender, tokensToDistribute), "Token transfer failed");

        emit BuyWithETH(msg.sender, msg.value, tokensToDistribute);
        forwardFunds();
    }

    function forwardFunds() internal {
        (bool sent, ) = owner.call{value: msg.value}("");
        require(sent, "Failed to send Ether");
    }

    function calculateTokenAmount(uint256 ethAmount) public view returns (uint256) {
        // Calculate token amount based on current stage pricing
        // Ensure conversion rates between ETH and USD, and token decimals are handled correctly
        return ethAmount / stagePricing[currentStage];
    }

    function setCurrentStage(uint256 _stage) external {
        // Add appropriate access control to restrict who can call this function
        require(_stage >= 0 && _stage < stagePricing.length, "Invalid stage");
currentStage = _stage;
}

}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_tokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"buyer","type":"address"},{"indexed":false,"internalType":"uint256","name":"ethAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"BuyWithETH","type":"event"},{"inputs":[{"internalType":"uint256","name":"ethAmount","type":"uint256"}],"name":"calculateTokenAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentStage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_stage","type":"uint256"}],"name":"setCurrentStage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0000000000000000000000006034a86bd177c7dc7ad1ee0608f128722e6e9832

-----Decoded View---------------
Arg [0] : _tokenAddress (address): 0x6034a86bD177C7DC7ad1Ee0608F128722E6e9832

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000006034a86bd177c7dc7ad1ee0608f128722e6e9832

169:1585:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;775:26;804:31;825:9;804:20;:31::i;:::-;775:60;;854:5;;;;;;;;;;;:14;;;869:10;881:18;854:46;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;846:80;;;;;;;;;;;;:::i;:::-;;;;;;;;;955:10;944:53;;;967:9;978:18;944:53;;;;;;;:::i;:::-;;;;;;;;1008:14;:12;:14::i;:::-;764:266;169:1585;;;;1509:240;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;:::i;:::-;;268:27;;;;;;;;;;;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;207:28;;;;;;;;;;;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;1194:307;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;242:19;;;;;;;;;;;;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;1194:307;1264:7;1467:12;1480;;1467:26;;;;;;;:::i;:::-;;;;1455:9;:38;;;;:::i;:::-;1448:45;;1194:307;;;:::o;1038:148::-;1083:9;1098:5;;;;;;;;;;;:10;;1116:9;1098:32;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1082:48;;;1149:4;1141:37;;;;;;;;;;;;:::i;:::-;;;;;;;;;1071:115;1038:148::o;1509:240::-;1670:1;1660:6;:11;;:43;;;;;1684:19;1675:6;:28;1660:43;1652:69;;;;;;;;;;;;:::i;:::-;;;;;;;;;1739:6;1724:12;:21;;;;1509:240;:::o;268:27::-;;;;:::o;207:28::-;;;;;;;;;;;;:::o;242:19::-;;;;;;;;;;;;;:::o;7:126:1:-;44:7;84:42;77:5;73:54;62:65;;7:126;;;:::o;139:96::-;176:7;205:24;223:5;205:24;:::i;:::-;194:35;;139:96;;;:::o;241:118::-;328:24;346:5;328:24;:::i;:::-;323:3;316:37;241:118;;:::o;365:77::-;402:7;431:5;420:16;;365:77;;;:::o;448:118::-;535:24;553:5;535:24;:::i;:::-;530:3;523:37;448:118;;:::o;572:332::-;693:4;731:2;720:9;716:18;708:26;;744:71;812:1;801:9;797:17;788:6;744:71;:::i;:::-;825:72;893:2;882:9;878:18;869:6;825:72;:::i;:::-;572:332;;;;;:::o;991:117::-;1100:1;1097;1090:12;1237:90;1271:7;1314:5;1307:13;1300:21;1289:32;;1237:90;;;:::o;1333:116::-;1403:21;1418:5;1403:21;:::i;:::-;1396:5;1393:32;1383:60;;1439:1;1436;1429:12;1383:60;1333:116;:::o;1455:137::-;1509:5;1540:6;1534:13;1525:22;;1556:30;1580:5;1556:30;:::i;:::-;1455:137;;;;:::o;1598:345::-;1665:6;1714:2;1702:9;1693:7;1689:23;1685:32;1682:119;;;1720:79;;:::i;:::-;1682:119;1840:1;1865:61;1918:7;1909:6;1898:9;1894:22;1865:61;:::i;:::-;1855:71;;1811:125;1598:345;;;;:::o;1949:169::-;2033:11;2067:6;2062:3;2055:19;2107:4;2102:3;2098:14;2083:29;;1949:169;;;;:::o;2124:171::-;2264:23;2260:1;2252:6;2248:14;2241:47;2124:171;:::o;2301:366::-;2443:3;2464:67;2528:2;2523:3;2464:67;:::i;:::-;2457:74;;2540:93;2629:3;2540:93;:::i;:::-;2658:2;2653:3;2649:12;2642:19;;2301:366;;;:::o;2673:419::-;2839:4;2877:2;2866:9;2862:18;2854:26;;2926:9;2920:4;2916:20;2912:1;2901:9;2897:17;2890:47;2954:131;3080:4;2954:131;:::i;:::-;2946:139;;2673:419;;;:::o;3098:332::-;3219:4;3257:2;3246:9;3242:18;3234:26;;3270:71;3338:1;3327:9;3323:17;3314:6;3270:71;:::i;:::-;3351:72;3419:2;3408:9;3404:18;3395:6;3351:72;:::i;:::-;3098:332;;;;;:::o;3436:122::-;3509:24;3527:5;3509:24;:::i;:::-;3502:5;3499:35;3489:63;;3548:1;3545;3538:12;3489:63;3436:122;:::o;3564:139::-;3610:5;3648:6;3635:20;3626:29;;3664:33;3691:5;3664:33;:::i;:::-;3564:139;;;;:::o;3709:329::-;3768:6;3817:2;3805:9;3796:7;3792:23;3788:32;3785:119;;;3823:79;;:::i;:::-;3785:119;3943:1;3968:53;4013:7;4004:6;3993:9;3989:22;3968:53;:::i;:::-;3958:63;;3914:117;3709:329;;;;:::o;4044:222::-;4137:4;4175:2;4164:9;4160:18;4152:26;;4188:71;4256:1;4245:9;4241:17;4232:6;4188:71;:::i;:::-;4044:222;;;;:::o;4272:104::-;4317:7;4346:24;4364:5;4346:24;:::i;:::-;4335:35;;4272:104;;;:::o;4382:142::-;4485:32;4511:5;4485:32;:::i;:::-;4480:3;4473:45;4382:142;;:::o;4530:254::-;4639:4;4677:2;4666:9;4662:18;4654:26;;4690:87;4774:1;4763:9;4759:17;4750:6;4690:87;:::i;:::-;4530:254;;;;:::o;4790:60::-;4818:3;4839:5;4832:12;;4790:60;;;:::o;4856:142::-;4906:9;4939:53;4957:34;4966:24;4984:5;4966:24;:::i;:::-;4957:34;:::i;:::-;4939:53;:::i;:::-;4926:66;;4856:142;;;:::o;5004:126::-;5054:9;5087:37;5118:5;5087:37;:::i;:::-;5074:50;;5004:126;;;:::o;5136:139::-;5199:9;5232:37;5263:5;5232:37;:::i;:::-;5219:50;;5136:139;;;:::o;5281:157::-;5381:50;5425:5;5381:50;:::i;:::-;5376:3;5369:63;5281:157;;:::o;5444:248::-;5550:4;5588:2;5577:9;5573:18;5565:26;;5601:84;5682:1;5671:9;5667:17;5658:6;5601:84;:::i;:::-;5444:248;;;;:::o;5698:180::-;5746:77;5743:1;5736:88;5843:4;5840:1;5833:15;5867:4;5864:1;5857:15;5884:180;5932:77;5929:1;5922:88;6029:4;6026:1;6019:15;6053:4;6050:1;6043:15;6256:185;6296:1;6313:20;6331:1;6313:20;:::i;:::-;6308:25;;6347:20;6365:1;6347:20;:::i;:::-;6342:25;;6386:1;6376:35;;6391:18;;:::i;:::-;6376:35;6433:1;6430;6426:9;6421:14;;6256:185;;;;:::o;6447:147::-;6548:11;6585:3;6570:18;;6447:147;;;;:::o;6600:114::-;;:::o;6720:398::-;6879:3;6900:83;6981:1;6976:3;6900:83;:::i;:::-;6893:90;;6992:93;7081:3;6992:93;:::i;:::-;7110:1;7105:3;7101:11;7094:18;;6720:398;;;:::o;7124:379::-;7308:3;7330:147;7473:3;7330:147;:::i;:::-;7323:154;;7494:3;7487:10;;7124:379;;;:::o;7509:170::-;7649:22;7645:1;7637:6;7633:14;7626:46;7509:170;:::o;7685:366::-;7827:3;7848:67;7912:2;7907:3;7848:67;:::i;:::-;7841:74;;7924:93;8013:3;7924:93;:::i;:::-;8042:2;8037:3;8033:12;8026:19;;7685:366;;;:::o;8057:419::-;8223:4;8261:2;8250:9;8246:18;8238:26;;8310:9;8304:4;8300:20;8296:1;8285:9;8281:17;8274:47;8338:131;8464:4;8338:131;:::i;:::-;8330:139;;8057:419;;;:::o;8482:163::-;8622:15;8618:1;8610:6;8606:14;8599:39;8482:163;:::o;8651:366::-;8793:3;8814:67;8878:2;8873:3;8814:67;:::i;:::-;8807:74;;8890:93;8979:3;8890:93;:::i;:::-;9008:2;9003:3;8999:12;8992:19;;8651:366;;;:::o;9023:419::-;9189:4;9227:2;9216:9;9212:18;9204:26;;9276:9;9270:4;9266:20;9262:1;9251:9;9247:17;9240:47;9304:131;9430:4;9304:131;:::i;:::-;9296:139;;9023:419;;;:::o

ipfs://07e7405ae85405e12b3b1d7e92d11e713798fe414a11e10b9766bdd676e8bc97