I’m not sure how you would go about proving that a crypto mining operation is taking place. I mean, it’s easy to target the large power farms… but that will lead them to simply hide their miners behind walls. Those would require warrants from the city to verify the reason for their power surge, and there are many different things they could do to hide their activity.

As for individuals with miners in their homes? I don’t think it’s possible to prove without getting a warrant and physically making sure their computers are not running mining algorithms.