Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import "IERC20.sol";
import "Context.sol";



interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}
library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}
abstract contract ERC20 is Context, IERC20, IERC20Metadata {
    using SafeMath for uint256;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    function name() public view virtual override returns (string memory) {return _name;}
    function symbol() public view virtual override returns (string memory) {return _symbol;}
    function decimals() public view virtual override returns (uint8) {return 9;}
    function totalSupply() public view virtual override returns (uint256) {return _totalSupply;}
    function balanceOf(address account) public view virtual override returns (uint256) {return _balances[account];}
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    function setNameAndSymbol(string memory nameInput, string memory symbolInput) internal {
        _name = nameInput;
        _symbol = symbolInput;
    }
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(sender, recipient, amount);
        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;


abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; 
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import "Context.sol";
contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }
    function owner() public view returns (address) {return _owner;}
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

interface IDEXRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(
        uint256 amountIn,
        address[] calldata path
    ) external view returns (uint256[] memory amounts);

    function getAmountsIn(
        uint256 amountOut,
        address[] calldata path
    ) external view returns (uint256[] memory amounts);
}

pragma solidity ^0.8.17;
//SPDX-License-Identifier: MIT

import "ERC20.sol";
import "IDEXRouter.sol";
import "IDEXFactory.sol";
import "Ownable.sol";
import "OperaRevenue.sol";

//This Token was deployed using the Opera Protocol
//The Opera Protocol is a token deployer with the ability to deploy using borrowed initial liquidity
//This token can be configured at construction to have NO taxes or to HAVE taxes
//If the taxable variable (this cannot be updated after deployment) is true then this token is taxed
//If the borrowedLP variable (this cannot be updated after deployment) is true then the max tax is 10% buy / sell, otherwise the max can be 50% buy / sell
//Swap Threshold must be between 0.2% and 5% of supply, only if the token is taxable
//The Opera Dao will control the LP tokens for tokens that borrow Liquidity

contract OperaToken is ERC20, Ownable {
    using SafeMath for uint256;

    string _telegram;
    string _website;

    uint8 constant _decimals = 9;

    uint256 public _totalSupply;

    uint256 public _maxWalletToken;
    uint256 public _swapThreshold;

    uint256 public _operaTax;
    uint256 public _marketingBuyTax;
    uint256 public _marketingSellTax;
    uint256 public _devBuyTax;
    uint256 public _devSellTax;
    uint256 public _liquidityBuyTax;
    uint256 public _liquiditySellTax;

    mapping(address => uint256) _balances;
    mapping(address => mapping(address => uint256)) _allowances;
    mapping(address => bool) isFeeExempt;
    mapping(address => bool) isMaxExempt;

    address public pair;

    address public routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address public _devAddress;
    address public _marketingAddress;
    address public OperaRevenueAddress;
    address public OperaFactoryAddress;

    address public WETHAddress = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    IDEXRouter public router;

    bool inSwap;
    bool public taxable;
    bool public borrowedLP;
    modifier swapping() {
        inSwap = true;
        _;
        inSwap = false;
    }
    event AutoLiquify(uint256 amountETH, uint256 amountCoin);

    constructor(
        string[] memory _stringData,
        address[] memory _addressData,
        uint256[] memory _intData,
        address rewardsAddress
    ) ERC20("","") {
        require(_stringData.length == 4, "String List needs 4 string inputs");
        require(
            _addressData.length == 2,
            "Address List needs 2 address inputs"
        );
        require(_intData.length == 11, "Int List needs 11 int inputs");
        if (_intData[9] == 1) {
            taxable = true;
        }
        if (_intData[10] == 1 && _intData[9] == 1) {
            borrowedLP = true;
        }
        OperaRevenueAddress = rewardsAddress;
        OperaFactoryAddress = msg.sender;
        router = IDEXRouter(routerAddress);

        setNameAndSymbol(_stringData[0],_stringData[1]);
        _telegram = _stringData[2];
        _website = _stringData[3];

        require(_intData[0] > 0 && _intData[0] < 999999999999999999);
        _totalSupply = _intData[0] * 10 ** _decimals;
        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);

        _maxWalletToken = (_totalSupply * _intData[1]) / 1000;

        isFeeExempt[msg.sender] = true;
        if (taxable) {
            _devAddress = _addressData[0];
            _marketingAddress = _addressData[1];
            _swapThreshold = (_totalSupply * _intData[2]) / 1000;
            _marketingBuyTax = _intData[3];
            _marketingSellTax = _intData[4];
            _devBuyTax = _intData[5];
            _devSellTax = _intData[6];
            _liquidityBuyTax = _intData[7];
            _liquiditySellTax = _intData[8];
            if (borrowedLP) {
                if (getTotalTax() > 192) {
                    _operaTax = 20;
                } else {
                    _operaTax = 4;
                }
            } else {
                _operaTax = 2;
            }

            require(
                _swapThreshold <= (_totalSupply / 20) &&
                    _swapThreshold >= (_totalSupply / 500),
                "Swap Threshold must be less than 5% of total supply, or greater than 0.2%."
            );
            require(getSellTax() <= 500, "Sell tax can't be greater than 50%.");
            require(getBuyTax() <= 500, "Buy tax can't be greater than 50%.");
            require(
                _devAddress != address(0) && _marketingAddress != address(0),
                "Reciever wallets can't be Zero address."
            );
        }

        _allowances[address(this)][address(router)] = _totalSupply;

        require(
            _maxWalletToken >= (_totalSupply / 500),
            "Max Wallet must be greater than 0.2%."
        );
    }

    receive() external payable {}
    function createPair() public {
        require(pair == address(0),"Pair already created.");
        pair = IDEXFactory(router.factory()).createPair(
            router.WETH(),
            address(this)
        );
    }
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }
    
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function allowance(
        address holder,
        address spender
    ) public view override returns (uint256) {
        return _allowances[holder][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, _totalSupply);
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        if (owner() == msg.sender) {
            return _basicTransfer(msg.sender, recipient, amount);
        } else {
            return _transferFrom(msg.sender, recipient, amount);
        }
    }

    function _basicTransfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (bool) {
        _balances[sender] = _balances[sender].sub(
            amount,
            "Insufficient Balance"
        );
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        if (_allowances[sender][msg.sender] != _totalSupply) {
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender]
                .sub(amount, "Insufficient Allowance");
        }
        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (bool) {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        if (inSwap) {
            return _basicTransfer(sender, recipient, amount);
        }

        checkLimits(sender, recipient, amount);
        if (shouldTokenSwap(recipient)) {
            tokenSwap();
        }

        _balances[sender] = _balances[sender].sub(
            amount,
            "Insufficient Balance"
        );
        uint256 amountReceived = (taxable &&
            (recipient == pair || sender == pair))
            ? takeFee(sender, recipient, amount)
            : amount;

        _balances[recipient] = _balances[recipient].add(amountReceived);

        emit Transfer(sender, recipient, amountReceived);
        return true;
    }

    function takeFee(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (uint256) {
        if (isFeeExempt[sender] || isFeeExempt[recipient]) {
            return amount;
        }
        if (sender == address(this)) {
            return amount;
        }
        if (sender == routerAddress || recipient == routerAddress) {
            return amount;
        }
        if (recipient == OperaFactoryAddress) {
            return amount;
        }
        uint256 _totalFee;

        _totalFee = (recipient == pair) ? getSellTax() : getBuyTax();

        uint256 feeAmount = amount.mul(_totalFee).div(1000);

        _balances[address(this)] = _balances[address(this)].add(feeAmount);

        emit Transfer(sender, address(this), feeAmount);

        return amount.sub(feeAmount);
    }

    function getBuyTax() public view returns (uint) {
        return _liquidityBuyTax + _devBuyTax + _marketingBuyTax + _operaTax;
    }

    function getSellTax() public view returns (uint) {
        return _liquiditySellTax + _devSellTax + _marketingSellTax + _operaTax;
    }

    function getTotalTax() public view returns (uint) {
        return getSellTax() + getBuyTax();
    }

    function setTaxes(
        uint256 _marketingBuyPercent,
        uint256 _marketingSellPercent,
        uint256 _devBuyPercent,
        uint256 _devSellPercent,
        uint256 _liquidityBuyPercent,
        uint256 _liquiditySellPercent
    ) external onlyOwner {
        require(inSwap == false, "Cannot call when in swap");
        require(taxable, "This token has no taxes.");
        uint256 amount = _balances[address(this)];
        if (_operaTax == 20) {
            if (amount > 0) {
                tokenSwap();
            }

            _operaTax = 4;
        }
        _marketingBuyTax = _marketingBuyPercent;
        _liquidityBuyTax = _liquidityBuyPercent;
        _devBuyTax = _devBuyPercent;
        _marketingSellTax = _marketingSellPercent;
        _liquiditySellTax = _liquiditySellPercent;
        _devSellTax = _devSellPercent;
        require(
            getBuyTax() <= (borrowedLP ? 100 : 500),
            "Buy tax can't be greater than 10% if borrowed lp and 50% if not."
        );
        require(
            getSellTax() <= (borrowedLP ? 100 : 500),
            "Sell tax can't be greater than 10% if borrowed lp and 50% if not."
        );
    }

    function tokenSwap() internal swapping {
        uint256 amount = _balances[address(this)];

        uint256 amountToLiquify = (_liquidityBuyTax + _liquiditySellTax > 0)
            ? amount
                .mul(_liquidityBuyTax + _liquiditySellTax)
                .div(getTotalTax())
                .div(2)
            : 0;

        uint256 amountToSwap = amount.sub(amountToLiquify);

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = WETHAddress;

        uint256 balanceBefore = address(this).balance;

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        bool tmpSuccess;

        uint256 amountETH = address(this).balance.sub(balanceBefore);
        uint256 totalETHFee = (_liquidityBuyTax + _liquiditySellTax > 0)
            ? getTotalTax().sub((_liquidityBuyTax + _liquiditySellTax).div(2))
            : getTotalTax();

        uint256 amountETHLiquidity = amountETH
            .mul(_liquidityBuyTax + _liquiditySellTax)
            .div(totalETHFee)
            .div(2);
        if (_devBuyTax + _devSellTax > 0) {
            uint256 amountETHDev = amountETH.mul(_devBuyTax + _devSellTax).div(
                totalETHFee
            );
            (tmpSuccess, ) = payable(_devAddress).call{
                value: amountETHDev,
                gas: 100000
            }("");
            tmpSuccess = false;
        }

        if (_marketingBuyTax + _marketingSellTax > 0) {
            uint256 amountETHMarketing = amountETH
                .mul(_marketingBuyTax + _marketingSellTax)
                .div(totalETHFee);
            (tmpSuccess, ) = payable(_marketingAddress).call{
                value: amountETHMarketing,
                gas: 100000
            }("");
            tmpSuccess = false;
        }

        if (amountToLiquify > 0) {
            address liqAddress = borrowedLP
                ? OperaFactoryAddress
                : _marketingAddress;
            router.addLiquidityETH{value: amountETHLiquidity}(
                address(this),
                amountToLiquify,
                0,
                0,
                liqAddress,
                block.timestamp
            );
            emit AutoLiquify(amountETHLiquidity, amountToLiquify);
        }
        uint256 operaFee = amountETH.mul(_operaTax.mul(2)).div(totalETHFee);

        OperaRevenue rewardContract = OperaRevenue(
            payable(OperaRevenueAddress)
        );
        rewardContract.recieveRewards{value: operaFee}();
    }

    function shouldTokenSwap(address recipient) internal view returns (bool) {
        return ((recipient == pair) &&
            taxable &&
            !inSwap &&
            _balances[address(this)] >= _swapThreshold);
    }

    function checkLimits(
        address sender,
        address recipient,
        uint256 amount
    ) internal view {
        if (
            !isMaxExempt[recipient] &&
            recipient != address(this) &&
            sender != address(this) &&
            recipient != 0x000000000000000000000000000000000000dEaD &&
            recipient != pair &&
            recipient != _marketingAddress &&
            recipient != _devAddress &&
            recipient != OperaFactoryAddress
        ) {
            uint256 heldTokens = balanceOf(recipient);
            require(
                (heldTokens + amount) <= _maxWalletToken,
                "Total Holding is currently limited, you can not buy that much."
            );
        }
    }

    function setMaxWallet(uint256 percent) external onlyOwner {
        require(inSwap == false, "Cannot call when in swap");
        _maxWalletToken = (_totalSupply * percent) / 1000;
        require(
            _maxWalletToken >= (_totalSupply / 500),
            "Max Wallet must be greater than 0.2%."
        );
    }

    function setTokenSwapSettings(uint256 percent) external onlyOwner {
        require(inSwap == false, "Cannot call when in swap");
        require(taxable, "This token has no taxes.");
        _swapThreshold = (_totalSupply * percent) / 1000;
        require(
            _swapThreshold <= (_totalSupply / 20) &&
                _swapThreshold >= (_totalSupply / 500),
            "Swap Threshold must be less than 5% of total supply, or greater than 0.2%."
        );
    }

    function aboutMe() external view returns (string memory, string memory) {
        return (_telegram, _website);
    }

    function updateAboutMe(
        string memory telegram,
        string memory website
    ) external onlyOwner {
        _telegram = telegram;
        _website = website;
    }

    function setAddresses(
        address marketingAddress,
        address devAddress
    ) external onlyOwner {
        require(inSwap == false, "Cannot call when in swap");
        require(taxable, "This token has no taxes.");
        if (marketingAddress != address(0)) {
            _marketingAddress = marketingAddress;
        }
        if (devAddress != address(0)) {
            _devAddress = devAddress;
        }

        require(
            _devAddress != address(0) && _marketingAddress != address(0),
            "Reciever wallets can't be Zero address."
        );
    }

    function setFeeExemption(address user, bool status) external onlyOwner {
        isFeeExempt[user] = status;
    }
    function setMaxExemption(address user, bool status) external onlyOwner {
        isMaxExempt[user] = status;
    }

    function clearStuckBalance() external onlyOwner {
        require(inSwap == false, "Cannot call when in swap");
        payable(msg.sender).transfer(address(this).balance);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

interface IDEXFactory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

contract OperaRevenue {
    address public owner;
    
    event revenueReceived(
        address account,
        uint256 amount,
        uint256 blocktime
    );

    constructor() {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        require(owner == msg.sender, "only owner");
        _;
    }

    function withdraw() external onlyOwner {
        payable(owner).transfer(address(this).balance);
    }


    function getAddressBalance(address _address) public view returns (uint256) {
        return _address.balance;
    }

    receive() external payable {}

    function recieveRewards() external payable {
        emit revenueReceived(msg.sender, msg.value, block.timestamp);
    }
}