The best way to regulate crypto - is not to regulate it at all
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This thing was created not for regulation, and it can't be controlled by anybody. And till you don't understand it all community will have troubles with this.
Crypto is transparent. We all can see how much coins received the recipient and from where. The only thing that we don't know - who is sender and who received.
Yes, there are some coins that hide even this information - just close it the way to big market and thats the solution. What to regulate on crypto? This is bullshit, someone just don't want to lose his authority