Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

Outline

• library SafeMath
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function add(uint256 a, uint256 b)
•  contract X2invest *
•    - function collectPercent()
•    - function persentRate()
•    - function payoutAmount()
•    - function makeDeposit()
•    - function returnDeposit()
•    - function()

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2018-10-07
*/

pragma solidity 0.4 .25;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

    function mul(uint256 a, uint256 b) internal pure returns(uint256) {
        uint256 c = a * b;
        assert(a == 0 || c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns(uint256) {
        // assert(b > 0); // Solidity automatically throws when dividing by 0
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns(uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns(uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }

}

/**
The development of the contract is entirely owned by the X2invest campaign, any copying of the source code is not legal.
*/
contract X2invest {
    //use of library of safe mathematical operations    
    using SafeMath
    for uint;
    // array containing information about beneficiaries
    mapping(address => uint) public userDeposit;
    //array containing information about the time of payment
    mapping(address => uint) public userTime;
    //array containing information on interest paid
    mapping(address => uint) public persentWithdraw;
    //fund fo transfer percent
    address public projectFund = 0x15e3aAD84394012f450d7A6965f2f4C59Ca7071a;
    //wallet for a charitable foundation
    address public charityFund = 0x6c3607D37A000d7879F02b98c59376c7DAc91151;
    //percentage deducted to the advertising fund
    uint projectPercent = 8;
    //percent for a charitable foundation
    uint charityPercent = 1;
    //time through which you can take dividends
    uint chargingTime = 1 hours;
    //start persent 0.25% per hour
    uint public startPercent = 250;
    uint public lowPersent = 300;
    uint public middlePersent = 350;
    uint public highPersent = 375;
    //interest rate increase steps
    uint public stepLow = 1000 ether;
    uint public stepMiddle = 2500 ether;
    uint public stepHigh = 5000 ether;
    uint countOfInvestors = 0;
    uint countOfCharity = 0;

    modifier isIssetUser() {
        require(userDeposit[msg.sender] > 0, "Deposit not found");
        _;
    }

    modifier timePayment() {
        require(now >= userTime[msg.sender].add(chargingTime), "Too fast payout request");
        _;
    }

    //return of interest on the deposit
    function collectPercent() isIssetUser timePayment internal {
        //if the user received 200% or more of his contribution, delete the user
        if ((userDeposit[msg.sender].mul(2)) <= persentWithdraw[msg.sender]) {
            userDeposit[msg.sender] = 0;
            userTime[msg.sender] = 0;
            persentWithdraw[msg.sender] = 0;
        } else {
            uint payout = payoutAmount();
            userTime[msg.sender] = now;
            persentWithdraw[msg.sender] += payout;
            msg.sender.transfer(payout);
        }
    }

    //calculation of the current interest rate on the deposit
    function persentRate() public view returns(uint) {
        //get contract balance
        uint balance = address(this).balance;
        //calculate persent rate
        if (balance < stepLow) {
            return (startPercent);
        }
        if (balance >= stepLow && balance < stepMiddle) {
            return (lowPersent);
        }
        if (balance >= stepMiddle && balance < stepHigh) {
            return (middlePersent);
        }
        if (balance >= stepHigh) {
            return (highPersent);
        }
    }

    //refund of the amount available for withdrawal on deposit
    function payoutAmount() public view returns(uint) {
        uint persent = persentRate();
        uint rate = userDeposit[msg.sender].mul(persent).div(100000);
        uint interestRate = now.sub(userTime[msg.sender]).div(chargingTime);
        uint withdrawalAmount = rate.mul(interestRate);
        return (withdrawalAmount);
    }

    //make a contribution to the system
    function makeDeposit() private {
        if (msg.value > 0) {
            if (userDeposit[msg.sender] == 0) {
                countOfInvestors += 1;
            }
            if (userDeposit[msg.sender] > 0 && now > userTime[msg.sender].add(chargingTime)) {
                collectPercent();
            }
            userDeposit[msg.sender] = userDeposit[msg.sender].add(msg.value);
            userTime[msg.sender] = now;
            //sending money for advertising
            projectFund.transfer(msg.value.mul(projectPercent).div(100));
            //sending money to charity
            uint charityMoney = msg.value.mul(charityPercent).div(100);
            countOfCharity+=charityMoney;
            charityFund.transfer(charityMoney);
        } else {
            collectPercent();
        }
    }

    //return of deposit balance
    function returnDeposit() isIssetUser private {
        //userDeposit-persentWithdraw-(userDeposit*8/100)
        uint withdrawalAmount = userDeposit[msg.sender].sub(persentWithdraw[msg.sender]).sub(userDeposit[msg.sender].mul(projectPercent).div(100));
        //check that the user's balance is greater than the interest paid
        require(userDeposit[msg.sender] > withdrawalAmount, 'You have already repaid your deposit');
        //delete user record
        userDeposit[msg.sender] = 0;
        userTime[msg.sender] = 0;
        persentWithdraw[msg.sender] = 0;
        msg.sender.transfer(withdrawalAmount);
    }

    function() external payable {
        //refund of remaining funds when transferring to a contract 0.00000112 ether
        if (msg.value == 0.00000112 ether) {
            returnDeposit();
        } else {
            makeDeposit();
        }
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"constant":true,"inputs":[],"name":"lowPersent","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"startPercent","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"stepHigh","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"projectFund","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"payoutAmount","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"charityFund","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"stepLow","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"userTime","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"stepMiddle","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"highPersent","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"persentRate","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"userDeposit","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"middlePersent","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"persentWithdraw","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"}]

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

bzzr://d121dbf36146c028c90df6982123e78e3e61aa65887016cbc0916e0637405ffe