And if a substantial amount of business was conducted using bitcoins or other cryptocurrencies, I have no doubt the rest of the world would have figured out a w

And if a substantial amount of business was conducted using bitcoins or other cryptocurrencies, I have no doubt the rest of the world would have figured out a way to cut Russians off from them as well. That's one of the prices you pay when your government decides to invade one of their neighbors and tries to commit genocide.