Every day millions of dollars are laundered through fictitious firms, offshore, through illegal conversion centers. These amounts are much larger than those that are laundered using cryptocurrency. Moreover, most cryptocurrencies are not anonymous, and blockchain provides transparency of the network. All transactions, amounts transferred from one purse to another, all balances of purses are visible to every person. Therefore, use, for example Bitcoin as a money laundering tool is not very convenient. For these purposes, anonymous cryptocurrencies, such as Zcash, Verge and others, are better suited. But this does not mean that cryptocurrency is evil, because even the most innocuous things can be used for both positive and negative purposes.