A federal grand jury has indicted Benjamin Paul Wiener of Sioux Falls on 29 counts related to a $20 million cryptocurrency fraud scheme. Wiener is accused of making false statements to victims in South Dakota and Minnesota, convincing them to invest cash and digital currency in his company. The indictment reveals that Wiener allegedly used financial institutions and crypto exchanges to obscure the origins of the funds, which he then spent on personal expenses. When funds dwindled or investors sought returns, Wiener reportedly recruited new investors to pay off earlier ones, utilizing eight entities, including several LLCs, to facilitate the fraud.