It is surprising that so far there haven’t been any legislation in Europe that prohibits CO2 emissions and energy consumption for crypto mining. Feels like a slum dunk to get it passed and get some nice political credit for it.
I'm not mining, I'm heating my winter swimming pool with this ASIC based heating elements!
Tax any externalities and let the problem solve itself. Yes, you might end up with some heated sidewalks or other conspicuous consumption, but at least you end up with resources that can counter the problem.
Why not simply prohibit proof-of-work coins and be done with it? There are so many disadvantages and no benefits, it seems.
Europe's hashrate could disappear overnight and barely anyone would notice.
Is there any country that's dependent on crypto mining? I think you may have meant the inverse--a country that crypto mining isn't dependent on (like it was on China... until China banned it a few years ago).