you and your friends are the reason why the government worry about bitcoin because some just want to use bitcoin for wrong way,buying drugs is illegal dude and btw i don't understand how Bitcoin may help you to buy drugs  You have to receive it at some point, by mail or personal . So your risk is same as you buy it by cash or regular money transfer. Maybe selling drugs is better way by using Bitcoins because it is quite complicated for police to prove the sell and purchase fact in this way Besides is psilocybe a drug? It is probably just a mushroom which you can gather in forest without any crypto or regular money )