625.2 Minimum Requirements for Acceptable Deposit Copy(ies)
To establish an effective date of registration, the U.S. Copyright Office must receive deposit copy(ies) containing the entire copyrightable content of the work described in the application.
The registration specialist may communicate with the applicant or may refuse registration if it appears that the applicant failed to submit the appropriate number of copies or phonorecords, failed to submit the entire copyrightable content of the work (or appropriate identifying material, where permitted), failed to submit the work in an acceptable file format (in the case of an electronic submission), or if the specialist is otherwise unable to access, view, or examine the deposit.
If the work is approved for registration, the effective date of registration will be the date that the Office received the entire copyrightable content of the work in a form that can be accessed, viewed, and examined.