“Poor man’s copyright” has been described as the practice of mailing a copy of a work to oneself by registered mail and keeping it sealed, which theoretically could function as (weak) evidence that the author was in possession of the work by a certain date. However, poor man’s copyright is a myth. There are no provisions for this method in U.S. copyright law. Such a practice is not required to establish copyright, and it is not a substitute for registration.