If the Library of Congress is registering copyrights as proposed, then LOC has the database and the search terms will just be the work you propose to copy. It c

If the Library of Congress is registering copyrights as proposed, then LOC has the database and the search terms will just be the work you propose to copy. It can be a simple service where you upload a few pages of text and LOC responds in a few seconds with the name of anyone who has registered copyright.