A history of disbarment adds the list of criminal case in cryptocurrency. Five judges has sentenced Mark Scot , the lawyer of Ignatova "the cryptoqueen". 50 years in prison and disbarred hid law practice. Ignatova is co founder of onecoin scam with her brother Ignatov. Her lawyer was convicted to involve with money laudring worth 400 million dollars. Scot received $50 in fees. He used the fund to buy cars, boats and homes near a beach.
https://www.thetimes.co.uk/article/the-4bn-onecoin-scam-how-crypto-queen-dr-ruja-ignatova-duped-ordinary-people-out-of-billions-then-went-missing-trqpr52pq
Pyramid schemes of onecoin has collected about 4 billion world wide. That was a huge of money. One coin supporters were like being brainwashed while the founder cought, they still do not believe that one coin was scam.
It seems that pyramid or MLM model still effective to cheat customers or members.