Copies or phonorecords deposited for the Library of Congress under section
407 may be used to satisfy the deposit provisions of this section, if they are accompanied by the prescribed application and fee, and by any additional identifying material that the Register may, by regulation, require. The Register shall also prescribe regulations establishing requirements under which copies or phonorecords acquired for the Library of Congress under subsection (e) of section
407, otherwise than by deposit, may be used to satisfy the deposit provisions of this section.