Wild volatility in Bitcoin
Bitcoin is down more than 20% from today's intraday high in a plunge below $9000 from as high as $11,434.
Coinbase, which is by far the most popular place to buy Bitcoin, has gone offline in the plunge.
Others have also suffered problems today.
The unprecedented interest in cryptocurrencies and untested nature of many of these systems is highly worrisome.
Aside from Coinbase, Kraken and Gemini are also down. GDAX was down earlier as well.
