I can think of one possible quick-fix solution to this: They make a library/catalog of public domain media, and whenever a claim is raised, the offending media is compared to the library of public domain.
Of course, it's far from perfect. For example - even though a piece of music is public domain, it doesn't mean that the interpretation is public domain. For example, if you cover a public domain song, you can claim copyright for that performance. This is where the automated claims system goes haywire - you actually need people (for now) to distinguish between original piece and a cover piece.
Of course, it's far from perfect. For example - even though a piece of music is public domain, it doesn't mean that the interpretation is public domain. For example, if you cover a public domain song, you can claim copyright for that performance. This is where the automated claims system goes haywire - you actually need people (for now) to distinguish between original piece and a cover piece.