The U.S. Copyright Office is a part of the Library of Congress. Some of the functions of the Copyright Office include administering the copyright law, creating and maintaining a public record of all works and documents through registration of claims and recordation of documents, and providing information and reference services regarding copyrights and recorded documents to the public.
The Compendium of U.S. Copyright Office Practices, Third Edition is "the governing administrative manual for registrations and recordations."The Register of Copyrights (director of the U.S. Copyright Office) released the Compendium of U.S. Copyright Office Practices, Third Edition in December 2014. The third edition marks the first major revision in more than two decades. The two previous editions were released in 1973 (first) and 1984 (second).