Can I remove information that I don’t want publicized?

“No. When you register a claim to copyright in a work with the Copyright Office, you create a public record of your claim to copyright. This record cannot be removed from the public record once it has been entered. All information you provide on your copyright registration will be available to the public and some of it on the Internet. You may wish to consider whether you want to include a birth date, nickname, alias, or any other optional detail you consider to be sensitive on your application.”
— U.S. Copyright Office, eCO Frequently Asked Questions