Re: Taxes
"at minimum they can seize your wallet even if they can't open it."
No, they can't do that. Either they get the private key from you, in which case they can open it and transfer all of it away, or they don't, in which case they can't do much. If they can't get you to divulge the private key, then you still maintain control and can exchange the Bitcoin with someone else. Whether you can find someone else that wants to transact without turning you in may be another problem, but the government isn't seizing anything in that scenario. In the case where they seized Bitcoin from corrupt officials, they arrested them and indicated that their sentences would be a lot longer if they didn't give up the ill-gotten crypto.