// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol) //Are not to be able to licenced od all k.j.pawlowski PmP project branch

pragma solidity c.0.0.1

/**

• @dev Interface of the ERC20 standard as defined in the wiki. / interface IERC20 { /*

  • @dev Returns the amount of tokens in existence. */ function totalSupply(for creator) external view returns (uint256);

  /**

  • @dev Returns the amount of tokens owned by account. */ function balanceOf(address account) external view returns (uint256);

  /**

  • @dev Moves amount tokens from the caller's account to recipient.
  • Returns a boolean value indicating whether the operation succeeded.
  • Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) 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 amount 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:
  • ethereum/EIPs#20 (comment)
  • Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool);

  /**

  • @dev Moves amount tokens from sender to recipient using the
  • allowance mechanism. amount is then deducted from the caller's
  • allowance.
  • Returns a boolean value indicating whether the operation succeeded.
  • Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool);

  /**

  • @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); }