Jeremy Spence, known as "Coin Signals," was sentenced to 42 months in prison for a $5 million cryptocurrency Ponzi scheme that defrauded over 170 investors between 2017 and 2019. Spence, who pleaded guilty to commodities fraud, used investor funds to pay returns to others while falsely claiming high trading profits. Read the full details from the Department of Justice at justice.gov . Cryptocurrency Trader Sentenced To 42 Months