creation_sourcecode: /**
  website: https://hotei.lol/
  
  */
  
  // SPDX-License-Identifier: MIT
  
  
  pragma solidity ^0.8.20;
  
  /**
   * @dev Interface of the ERC20 standard as defined in the EIP.
   */
  interface IERC20 {
      /**
       * @dev Emitted when `value` tokens are moved from one account (`from`) to
       * another (`to`).
       *
       * Note that `value` may be zero.
       */
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      /**
       * @dev Emitted when the allowance of a `spender` for an `owner` is set by
       * a call to {approve}. `value` is the new allowance.
       */
      event Approval(address indexed owner, address indexed spender, uint256 value);
  
      /**
       * @dev Returns the value of tokens in existence.
       */
      function totalSupply() external view returns (uint256);
  
      /**
       * @dev Returns the value of tokens owned by `account`.
       */
      function balanceOf(address account) external view returns (uint256);
  
      /**
       * @dev Moves a `value` amount of tokens from the caller's account to `to`.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transfer(address to, uint256 value) external returns (bool);
  
      /**
       * @dev Returns the remaining number of tokens that `spender` will be
       * allowed to spend on behalf of `owner` through {transferFrom}. This is
       * zero by default.
       *
       * This value changes when {approve} or {transferFrom} are called.
       */
      function allowance(address owner, address spender) external view returns (uint256);
  
      /**
       * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
       * caller's tokens.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * IMPORTANT: Beware that changing an allowance with this method brings the risk
       * that someone may use both the old and the new allowance by unfortunate
       * transaction ordering. One possible solution to mitigate this race
       * condition is to first reduce the spender's allowance to 0 and set the
       * desired value afterwards:
       * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
       *
       * Emits an {Approval} event.
       */
      function approve(address spender, uint256 value) external returns (bool);
  
      /**
       * @dev Moves a `value` amount of tokens from `from` to `to` using the
       * allowance mechanism. `value` is then deducted from the caller's
       * allowance.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transferFrom(address from, address to, uint256 value) external returns (bool);
  }
  
  // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)
  
  pragma solidity ^0.8.20;
  
  
  
  /**
   * @dev Interface for the optional metadata functions from the ERC20 standard.
   */
  interface IERC20Metadata is IERC20 {
      /**
       * @dev Returns the name of the token.
       */
      function name() external view returns (string memory);
  
      /**
       * @dev Returns the symbol of the token.
       */
      function symbol() external view returns (string memory);
  
      /**
       * @dev Returns the decimals places of the token.
       */
      function decimals() external view returns (uint8);
  }
  
  // OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)
  
  pragma solidity ^0.8.20;
  
  /**
   * @dev Provides information about the current execution context, including the
   * sender of the transaction and its data. While these are generally available
   * via msg.sender and msg.data, they should not be accessed in such a direct
   * manner, since when dealing with meta-transactions the account sending and
   * paying for execution may not be the actual sender (as far as an application
   * is concerned).
   *
   * This contract is only required for intermediate, library-like contracts.
   */
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  }
  
  // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
  pragma solidity ^0.8.20;
  
  /**
   * @dev Standard ERC20 Errors
   * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
   */
  interface IERC20Errors {
      /**
       * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       * @param balance Current balance for the interacting account.
       * @param needed Minimum amount required to perform a transfer.
       */
      error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
  
      /**
       * @dev Indicates a failure with the token `sender`. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       */
      error ERC20InvalidSender(address sender);
  
      /**
       * @dev Indicates a failure with the token `receiver`. Used in transfers.
       * @param receiver Address to which tokens are being transferred.
       */
      error ERC20InvalidReceiver(address receiver);
  
      /**
       * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
       * @param spender Address that may be allowed to operate on tokens without being their owner.
       * @param allowance Amount of tokens a `spender` is allowed to operate with.
       * @param needed Minimum amount required to perform a transfer.
       */
      error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
  
      /**
       * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
       * @param approver Address initiating an approval operation.
       */
      error ERC20InvalidApprover(address approver);
  
      /**
       * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
       * @param spender Address that may be allowed to operate on tokens without being their owner.
       */
      error ERC20InvalidSpender(address spender);
  }
  
  /**
   * @dev Standard ERC721 Errors
   * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
   */
  interface IERC721Errors {
      /**
       * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
       * Used in balance queries.
       * @param owner Address of the current owner of a token.
       */
      error ERC721InvalidOwner(address owner);
  
      /**
       * @dev Indicates a `tokenId` whose `owner` is the zero address.
       * @param tokenId Identifier number of a token.
       */
      error ERC721NonexistentToken(uint256 tokenId);
  
      /**
       * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       * @param tokenId Identifier number of a token.
       * @param owner Address of the current owner of a token.
       */
      error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
  
      /**
       * @dev Indicates a failure with the token `sender`. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       */
      error ERC721InvalidSender(address sender);
  
      /**
       * @dev Indicates a failure with the token `receiver`. Used in transfers.
       * @param receiver Address to which tokens are being transferred.
       */
      error ERC721InvalidReceiver(address receiver);
  
      /**
       * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
       * @param operator Address that may be allowed to operate on tokens without being their owner.
       * @param tokenId Identifier number of a token.
       */
      error ERC721InsufficientApproval(address operator, uint256 tokenId);
  
      /**
       * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
       * @param approver Address initiating an approval operation.
       */
      error ERC721InvalidApprover(address approver);
  
      /**
       * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
       * @param operator Address that may be allowed to operate on tokens without being their owner.
       */
      error ERC721InvalidOperator(address operator);
  }
  
  /**
   * @dev Standard ERC1155 Errors
   * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
   */
  interface IERC1155Errors {
      /**
       * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       * @param balance Current balance for the interacting account.
       * @param needed Minimum amount required to perform a transfer.
       * @param tokenId Identifier number of a token.
       */
      error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
  
      /**
       * @dev Indicates a failure with the token `sender`. Used in transfers.
       * @param sender Address whose tokens are being transferred.
       */
      error ERC1155InvalidSender(address sender);
  
      /**
       * @dev Indicates a failure with the token `receiver`. Used in transfers.
       * @param receiver Address to which tokens are being transferred.
       */
      error ERC1155InvalidReceiver(address receiver);
  
      /**
       * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
       * @param operator Address that may be allowed to operate on tokens without being their owner.
       * @param owner Address of the current owner of a token.
       */
      error ERC1155MissingApprovalForAll(address operator, address owner);
  
      /**
       * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
       * @param approver Address initiating an approval operation.
       */
      error ERC1155InvalidApprover(address approver);
  
      /**
       * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
       * @param operator Address that may be allowed to operate on tokens without being their owner.
       */
      error ERC1155InvalidOperator(address operator);
  
      /**
       * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
       * Used in batch transfers.
       * @param idsLength Length of the array of token identifiers
       * @param valuesLength Length of the array of token amounts
       */
      error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
  }
  
  pragma solidity ^0.8.20;
  
  
  /**
   * @dev Implementation of the {IERC20} interface.
   *
   * This implementation is agnostic to the way tokens are created. This means
   * that a supply mechanism has to be added in a derived contract using {_mint}.
   *
   * TIP: For a detailed writeup see our guide
   * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
   * to implement supply mechanisms].
   *
   * The default value of {decimals} is 18. To change this, you should override
   * this function so it returns a different value.
   *
   * We have followed general OpenZeppelin Contracts guidelines: functions revert
   * instead returning `false` on failure. This behavior is nonetheless
   * conventional and does not conflict with the expectations of ERC20
   * applications.
   *
   * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
   * This allows applications to reconstruct the allowance for all accounts just
   * by listening to said events. Other implementations of the EIP may not emit
   * these events, as it isn't required by the specification.
   */
  abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
      mapping(address account => uint256) private _balances;
  
      mapping(address account => mapping(address spender => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
  
      /**
       * @dev Sets the values for {name} and {symbol}.
       *
       * All two of these values are immutable: they can only be set once during
       * construction.
       */
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      /**
       * @dev Returns the name of the token.
       */
      function name() public view virtual returns (string memory) {
          return _name;
      }
  
      /**
       * @dev Returns the symbol of the token, usually a shorter version of the
       * name.
       */
      function symbol() public view virtual returns (string memory) {
          return _symbol;
      }
  
      /**
       * @dev Returns the number of decimals used to get its user representation.
       * For example, if `decimals` equals `2`, a balance of `505` tokens should
       * be displayed to a user as `5.05` (`505 / 10 ** 2`).
       *
       * Tokens usually opt for a value of 18, imitating the relationship between
       * Ether and Wei. This is the default value returned by this function, unless
       * it's overridden.
       *
       * NOTE: This information is only used for _display_ purposes: it in
       * no way affects any of the arithmetic of the contract, including
       * {IERC20-balanceOf} and {IERC20-transfer}.
       */
      function decimals() public view virtual returns (uint8) {
          return 18;
      }
  
      /**
       * @dev See {IERC20-totalSupply}.
       */
      function totalSupply() public view virtual returns (uint256) {
          return _totalSupply;
      }
  
      /**
       * @dev See {IERC20-balanceOf}.
       */
      function balanceOf(address account) public view virtual returns (uint256) {
          return _balances[account];
      }
  
      /**
       * @dev See {IERC20-transfer}.
       *
       * Requirements:
       *
       * - `to` cannot be the zero address.
       * - the caller must have a balance of at least `value`.
       */
      function transfer(address to, uint256 value) public virtual returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, value);
          return true;
      }
  
      /**
       * @dev See {IERC20-allowance}.
       */
      function allowance(address owner, address spender) public view virtual returns (uint256) {
          return _allowances[owner][spender];
      }
  
      /**
       * @dev See {IERC20-approve}.
       *
       * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
       * `transferFrom`. This is semantically equivalent to an infinite approval.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function approve(address spender, uint256 value) public virtual returns (bool) {
          address owner = _msgSender();
          _approve(owner, spender, value);
          return true;
      }
  
      /**
       * @dev See {IERC20-transferFrom}.
       *
       * Emits an {Approval} event indicating the updated allowance. This is not
       * required by the EIP. See the note at the beginning of {ERC20}.
       *
       * NOTE: Does not update the allowance if the current allowance
       * is the maximum `uint256`.
       *
       * Requirements:
       *
       * - `from` and `to` cannot be the zero address.
       * - `from` must have a balance of at least `value`.
       * - the caller must have allowance for ``from``'s tokens of at least
       * `value`.
       */
      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;
      }
  
      /**
       * @dev Moves a `value` amount of tokens from `from` to `to`.
       *
       * This internal function is equivalent to {transfer}, and can be used to
       * e.g. implement automatic token fees, slashing mechanisms, etc.
       *
       * Emits a {Transfer} event.
       *
       * NOTE: This function is not virtual, {_update} should be overridden instead.
       */
      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);
      }
  
      /**
       * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
       * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
       * this function.
       *
       * Emits a {Transfer} event.
       */
      function _update(address from, address to, uint256 value) internal virtual {
          if (from == address(0)) {
              // Overflow check required: The rest of the code assumes that totalSupply never overflows
              _totalSupply += value;
          } else {
              uint256 fromBalance = _balances[from];
              if (fromBalance < value) {
                  revert ERC20InsufficientBalance(from, fromBalance, value);
              }
              unchecked {
                  // Overflow not possible: value <= fromBalance <= totalSupply.
                  _balances[from] = fromBalance - value;
              }
          }
  
          if (to == address(0)) {
              unchecked {
                  // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                  _totalSupply -= value;
              }
          } else {
              unchecked {
                  // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                  _balances[to] += value;
              }
          }
  
          emit Transfer(from, to, value);
      }
  
      /**
       * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
       * Relies on the `_update` mechanism
       *
       * Emits a {Transfer} event with `from` set to the zero address.
       *
       * NOTE: This function is not virtual, {_update} should be overridden instead.
       */
      function _mint(address account, uint256 value) internal {
          if (account == address(0)) {
              revert ERC20InvalidReceiver(address(0));
          }
          _update(address(0), account, value);
      }
  
      /**
       * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
       * Relies on the `_update` mechanism.
       *
       * Emits a {Transfer} event with `to` set to the zero address.
       *
       * NOTE: This function is not virtual, {_update} should be overridden instead
       */
      function _burn(address account, uint256 value) internal {
          if (account == address(0)) {
              revert ERC20InvalidSender(address(0));
          }
          _update(account, address(0), value);
      }
  
      /**
       * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
       *
       * This internal function is equivalent to `approve`, and can be used to
       * e.g. set automatic allowances for certain subsystems, etc.
       *
       * Emits an {Approval} event.
       *
       * Requirements:
       *
       * - `owner` cannot be the zero address.
       * - `spender` cannot be the zero address.
       *
       * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
       */
      function _approve(address owner, address spender, uint256 value) internal {
          _approve(owner, spender, value, true);
      }
  
      /**
       * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
       *
       * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
       * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
       * `Approval` event during `transferFrom` operations.
       *
       * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
       * true using the following override:
       * ```
       * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
       *     super._approve(owner, spender, value, true);
       * }
       * ```
       *
       * Requirements are the same as {_approve}.
       */
      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);
          }
      }
  
      /**
       * @dev Updates `owner` s allowance for `spender` based on spent `value`.
       *
       * Does not update the allowance value in case of infinite allowance.
       * Revert if not enough allowance is available.
       *
       * Does not emit an {Approval} event.
       */
      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);
              }
          }
      }
  }
  
  
  
  
  pragma solidity ^0.8.21;
  
  
  contract Hotei is ERC20 {
      constructor() ERC20("HOTEI", "HOTEI") {
          _mint(msg.sender, 777000000*10**18);
      }
  }