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South Dakota crypto investor charged in alleged $20 million Ponzi scheme
South Dakota
2026-07-16 15:09:26

South Dakota crypto investor faces 29 charges in alleged $20 million fraud case

U.S. prosecutors said a federal grand jury has charged Sioux Falls, South Dakota, crypto investor Benjamin Paul Wiener with 29 criminal counts tied to an alleged $20 million fraud scheme. The charges include wire fraud, money laundering, bank fraud, and aggravated identity theft. According to the indictment, Wiener, 43, is accused of using false statements to persuade dozens of investors in South Dakota and Minnesota to send money and digital assets to several companies he controlled. Prosecutors allege that after obtaining the funds, Wiener moved assets through banks and cryptocurrency exchanges to conceal their source, ownership, and control, while using part of the money for personal expenses. They also say he kept recruiting new investors when cash ran short or when earlier investors sought redemptions, and used later funds to repay earlier ones, an operating pattern they describe as consistent with a Ponzi scheme. The indictment says the conduct involved eight companies, including several LLCs. Wiener is also accused of forging documents and communication records in April 2025 and using another person’s identifying information to obtain a $1 million line of credit from a financial institution in Sioux Falls. He appeared in court on July 10, pleaded not guilty to all charges, and was released on bond. Trial is scheduled for Sept. 15. The case is being investigated jointly by the Internal Revenue Service Criminal Investigation division and the FBI.

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South Dakota crypto investor faces 29 charges in alleged $20 million fraud case
U.S. federal grand jury indicts South Dakota crypto investor Benjamin Paul Wiener