Dizzying trading in bitcoin fed the bubble argument, but now that Nasdaq is the third Wall Street player to say it is designing a financial instrument around it, banks may be forced to reassess cryptocurrencies.
The Federal Reserve Board's vice chair of supervision said that digital currencies hold the potential for innovation but that the financial system's security and resiliency are more important.
It’s been month after month of record-breaking, confounding growth for the cryptocurrency, accompanied by regular warnings from banks about bubble speculation.
