Abstract
175 countries, four billion dollars, one scam: the thrilling rise and fall of the biggest cryptocurrency con in history and the woman behind it all. In 2016, on stage at Wembley Arena in front of thousands of adoring fans, Dr. Ruja Ignatova promised her followers a financial revolution. The future, she said, belonged to cryptocurrencies such as Bitcoin. And the Oxford-educated, self-styled cryptoqueen vowed that she had invented the Bitcoin Killer. OneCoin would not only earn its investors untold fortunes; it would change the world. By March 2017, more than