Someone held up a 'buy bitcoin' sign during Yellen's testimony to Congress
An unidentified man held up a sign saying "buy bitcoin" during Fed Chair Janet Yellen's testimony Wednesday before the House Financial Services Committee. Bitcoin subsequently climbed toward session highs and traded 3.7 percent higher, at $2,418.46, as of 2:27 p.m. ET, according to CoinDesk. The unidentified bitcoin proponent, whose stunt was visible...