Of course, in order for the cryptocurrency to be legalized by states for free circulation, it must obey the general rules that provide for the prevention of the use of "dirty" money and the fight against the financing of terrorism. The main thing is that these rules should be moderate and reasonable, without distortions and excessive rigidity. In any sphere of human activity there must be a definite and clear order. This will also allow you to scare off various kinds of scammers and other criminal elements from the cryptocurrency market.