Yes. Claude exists on physical media somewhere. Put that media in a cell with no access to the internet. No one must access Claude outside of visitation hours.

Just because it's difficult doesn't mean it can't be done. If you're claiming your machine should be treated like a human, then let's treat it like a human.

I can’t tell if you’re being serious or not…

It's a funny way of imposing a very large fine. Make the service only available during predefined "visitation hours", prevent updated learning except from resources available in the prison, restrict speech and actions according to prison rules etc.