(a)
Except as provided by subsection (c), and subject to the provisions of subsection (e), the owner of copyright or of the exclusive right of publication in a work published in the United States shall deposit, within three months after the date of such publication—
(1)
two complete copies of the best edition; or
(2)
if the work is a sound recording, two complete phonorecords of the best edition, together with any printed or other visually perceptible material published with such phonorecords.
Neither the deposit requirements of this subsection nor the acquisition provisions of subsection (e) are conditions of copyright protection.