For years, a gang operating in New York allegedly offered a cash-for-Bitcoin service that generated at least $30 million, with men standing on street corners with plastic shopping bags full of money, drive-by pickups, and hundreds of thousands of dollars laid out on tables, according to court records. The records provide rare insight into an often unseen part of the criminal underworld: how hackers and drug traffickers convert their Bitcoin into cash outside of the online Bitcoin exchanges that ordinary people use. Rather than turning to sites like Coinbase, which often collaborate with and provide records to law enforcement if required, some criminals use underground, IRL Bitcoin exchanges like this gang which are allegedly criminal entities in their own right.