'Cryptoqueen' sidekick gets 20 years for $4 billion ponzi
The co-founder and main promoter of the $4 billion OneCoin pyramid scheme was sentenced to 20 years in prison for his role in one of the first and biggest criminal frauds involving cryptocurrency.
Karl Sebastian Greenwood, 46, was sentenced in New York on Tuesday, after pleading guilty in December to creating and promoting a phony cryptocurrency. Greenwood…

