Is copyright law federal or provincial

This underscores the idea that information itself is not copyrightable, only the specific arrangements or presentations of it.
According to the Copyright Act of 1976, registration of copyright is voluntary and may take place at any time during the term of protection.
See § 408 .

U.S.
Copyright Office has promulgated regulations pertaining to the examination and registration of copyrights and the recordation of transfers of copyright ownership, among other things.
These regulations are embodied in Title 37 of the Code of Federal Regulations.

The Copyright Office administers the national copyright system and provides advice on copyright law to congress, federal agencies, the courts and the public.
Have a question.
Ask a real person any government-related question for free.
They will get you the answer or let you know where to find it.

U.S.
Copyright Office and the Copyright Law: