I know that the deep web mainly uses cryptos as a means of transactions for people who want to buy things over there, but what type of cryptos are mainly used when making those transactions? Its just a curious question I have in my mind.
Any crypto coin that is decentralized and anonymous, including Bitcoin. Some users are also using mixers in order to fully block someone from tracing the private/exclusive transaction. This is the reason why a lot of mixers are currently existing and being watched by the government at the same time. On the other hand, I don't think they can stop them in making anymous transactions since there are a lot of alternatives also.