For those that don’t know, this is based off an often-abused tactic: take the original music of someone who has not registered it and register it instead of them. Once done, they file copyright strikes and/or file to have the creator’s monetization funds deposited in to the abuser’s account since the abuser is the “rightful owner”.
p.s. make sure to exfiltrate everything of value from your attached Google account before you hit Upload.
There's little recourse for false claims, so they'll probably do it anyway, and since it's the claimant that gets to deny your appeals, there won't be much you can do unless you can create enough publicity about it on social media (although I guess doing that to get attention could be enough reason to do it!)
Whether this applies to a Blu‐Ray rip, I will not attempt to discern.
The recordings of the classical music pieces are under the copyright.
There was a good article about there at [probably] TorrentFreaks.
Looking at it another way, an uncreative recording of a classical performance will be copyrighted for a period of time, but after it expires, a recording of the recording won’t add any further copyright. It’s a bit like how a photograph of a public domain painting is uncopyrightable, but a new painting based on the painting might be copyrightable.