Douver T. Braga, the alleged mastermind behind the Trade Coin Club Ponzi scheme, has been extradited from Switzerland to the U.S. and is now facing charges in a Seattle courtroom. The scheme is accused of defrauding approximately 126,000 investors out of $290 million, presenting itself as a legitimate cryptocurrency trading operation but instead functioning as a classic Ponzi scheme. Braga faces up to 20 years in prison if convicted. In related news, Michael Shumak, a Toronto-based fraudster, was sentenced to five years in U.S. prison for a separate $21 million diamond investment scam. Additionally, the FBI has indicted the owner of a Las Vegas company involved in a $24 million cryptocurrency Ponzi scheme.