Originally Posted by flipreads
The tricky part is PROVING it. Hence formally applying for copyright. Or doing the cheap way of using registered mail and mailing yourself a copy of your manuscript (don't open it; it can be used as evidenced that you are the author of the work).
Dear me, is that old chestnut really floating around still?
. Believe me, it has absolutely no legal standing whatsoever. Any amateur magician knows a dozen different way to get things in and out of "sealed envelopes".