Key highlights:
- The US authorities charge a crypto investor with 20 counts.
- The accused defrauded investors, luring them to invest in cash and digital assets.
- Wiener may face many years of prison sentence.
As the US authorities have intensified their scrutiny against crypto hacks and scams, federal prosecutors have alleged that a South Dakota crypto investor orchestrated a $20 million Ponzi scheme. According to the indictment, the accused misled victims into investing funds and cryptocurrencies via several platforms under his control.
South Dakota crypto investor faces multiple federal crypto fraud charges
Benjamin Paul Wiener, a crypto investor from Sioux Falls, South Dakota, has been accused of running a Ponzi-style scheme. A federal grand jury has indicted him on wire fraud, money laundering, bank fraud, identity theft, and more. On Thursday, US Attorney Ron Parsons announced these 29 charges against the crypto investor.
The indictment stated that Wiener forced many investors to put cash and digital assets into many of his companies, making false promises. Reportedly, he ran eight different business entities. The statement read,
“According to the indictment, Wiener devised a fraud scheme to obtain money and digital currency from victims who invested with Wiener’s companies. Wiener made materially false statements and fraudulent representations to induce his victims to invest money with his companies. His fraud scheme has negatively impacted dozens of victims throughout the region, including in South Dakota and Minnesota.
Further, prosecutors alleged that Wiener used money from old investors to repay earlier ones when they demanded reimbursement. This is a practice common in Ponzi schemes. The investors reportedly lost about $20 million to Wiener’s Ponzi scheme.
After receiving these funds, the crypto investor moved them through banks and exchanges to conceal their origin. He had also used a portion of these funds for his personal expenses. However, on July 10, he appeared before the US Magistrate Judge Veronica L. Duffy and pleaded not guilty to these charges.
Will Wiener face decades in prison?
In addition to the crypto scam charges, Wiener is also accused of obtaining a $1 million line of credit from a Sioux Falls financial institution. He allegedly submitted fake documents and used another individual’s identity to secure the credit without authorization.
As per the charges, the crypto investor could face a long prison term. Wire fraud and money laundering charges could carry a maximum sentence of 20 years each. He could even face a prison sentence or a $250,000 fine, or even both. The bank fraud charge could make him imprisoned for up to 30 years. The fake identity charge carries a two-year prison sentence.
However, the charges remain accusations as long as they remain unproven. Till now, the crypto investor hasn’t pleaded guilty. He is presumed innocent under the US legal system unless found guilty in court. His trial is reportedly scheduled to start on September 15, 2026.
US intensifies crackdown on crypto scams and fraud
Interestingly, the case against Wiener comes amid the US authorities’ increasing efforts to crack down on growing crypto threats. Investigative agencies, including the Department of Justice and the Federal Bureau of Investigation (FBI), and regulators such as the Securities and Exchange Commission (SEC) and the Commodities Futures Trading Commission (CFTC) have been intensifying their efforts to mitigate these crimes.
In February 2026, prosecutors charged a New England man who allegedly posed as a successful crypto investor to gain trust from community members. He gained around $1 million from investors but lost a significant portion to the offshore betting platform Stake.com.
The US authorities have also dealt with high-profile cases, including Sam Bankman-Fried and FTX. These cases highlight the country’s broader efforts to fight growing crypto crime.
Source:: Federal Prosecutors Say South Dakota Crypto Investor Ran an Alleged $20M Ponzi-Style Scheme