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// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; contract Owned { address public owner; constructor() public { owner = msg.sender; } modifier onlyOwner() { require(msg.sender == owner); _; } } contract Coin is Owned { uint256 decimals = 18; mapping(address => uint256) balances; event Mint(address indexed destination, uint256 amount); /// @notice Mint tokens /// @param addr The address holding the new token /// @param value The amount of token to be minted /// @dev This function performed no check on the caller. Must stay internal function _mint(address addr, uint256 value) internal { balances[addr] += value; require(balances[addr] >= value); emit Mint(addr, value); } /// @notice Mint tokens. Callable only by the owner /// @param addr The address holding the new token /// @param value The amount of token to be minted function mint(address addr, uint256 value) public onlyOwner { _mint(addr, value); } /// @notice Mint tokens. Used by the owner to mint directly tokens to himself. Callable only by the owner /// @param value The amount of token to be minted function mint(uint256 value) public { _mint(msg.sender, value); } /// @notice Return the user's balance /// @param dst User address function balanceOf(address dst) public view returns (uint256) { return balances[dst]; } }