$4bn cryptocurrency Ponzi scheme lands OneCoin ‘CryptoQueen’ in a lawsuit

he operators of OneCoin, Konstantin Ignatov and Ruja Ignatova, are at the heart of a new lawsuit which alleges the brother and sister duo ran a multimillion-dollar Ponzi scheme designed to dupe cryptocurrency investors. The lawsuit (.PDF), filed this week by law agency Silver Miller on behalf of investor Christine Grablis with the US Southern …