You have a large library of sound recordings, including some old speeches in the public domain. What is the best way to treat them with regard to Content ID?

Public domain content cannot be exclusively owned or monetized by a single entity. Enabling public domain speeches for Content ID matching would lead to invalid claims against other users who are legally using the same content. This creates unnecessary disputes and can negatively impact your Content ID standing. The best practice is to identify such content and exclude it from Content ID to avoid false claims. Custom IDs are not designed for flagging public domain status, and routing all claims for manual review is inefficient and unnecessary for content you know is public domain. While checking reports is good practice, it doesn't prevent the initial incorrect claims from being made.