U.S. Treasury Secretary Janet Yellen has warned about the dangers of bitcoin as the price of the leading cryptocurrency took a nosedive. She sees bitcoin as a highly speculative asset and is worried about potential losses investors can suffer. Yellen also believes that bitcoin is not widely used as a transaction mechanism due to its […]Read full post U.S. Treasury Secretary Janet Yellen calls bitcoin “highly speculative” as its price plunges. on Chaintimes.com.