Method, system, and non-transitory computer-readable record medium for providing content copyright in chatroom

A content protection method implemented by a computer system comprising at least one processor configured to execute computer-readable instructions included in a memory, the method comprising:

• adding, by the at least one processor, a mark to content in a chatroom, the mark including chatroom information for identifying the chatroom in response to a user request from a user associated with the content in the chatroom, the adding comprising providing an edit user interface (UI) for adjusting at least one of a size or a position of the mark added to the content;
• and
• executing, by the at least one processor, a function corresponding to the user request using the content to which the mark is added.