But verification is not to then sell personal data of users, and to confirm the identity in case of future fraud. It is scammers who buy users ' personal data to steal and launder money with impunity.
And where do you think they buy your details from? For someone to buy your details, someone else must be selling them. Yes, all these ICOs, IEOs, STOs, whatever
say that they need your documents to comply with regulations, but since the majority of them turn out to be complete scams, I'm sure there are many which are selling your details.