At the same time, it was trading at $14,573 on Bitfinex.
International Business Times reached out to Coinbase regarding the price difference but did not receive a response at the time of publication.
In a blog post on his site, Coinbase CEO Brian Armstrong sought to "remind customers of some of the risks associated with trading digital currency" - which include wild price swings.
"It goes without saying that prices have reached a level where sentiment is exhibiting short-term euphoria", said Mark Newton, managing member at Newton Advisors, in a note to clients. The venue temporarily crashed and continued to suffer from service delays.
"I truly don't think people are involved on a mass scale yet".
Between 5 and 6 a.m.
Armstrong warned in his post on Thursday that the increased interest in cryptocurrencies, which was punctuated by a stunning bitcoin rally earlier this week, has led to "extreme volatility and stress on our systems". Chicago-based Cboe Global Markets is planning to launch bitcoin futures on Sunday, while the world's largest futures exchange, CME, is set to launch its futures product the following week.
Bitcoin may be digital currency, but why would anyone spend it?
At the time of writing Bitcoin is fetching US$16,875 according to Coinbase.
Cryptocurrency exchanges, which don't have the industrial infrastructure of traditional exchanges such as the New York Stock Exchange or the Nasdaq, are under pressure to handle record trading volumes. JPMorgan Chase Jamie Dimon has called bitcoin a "fraud".
With bitcoin surging in price over the last couple of weeks it looks like everyone and his brother is trying to jump on board while the jumping is good. There's also the fact that 1,000 people own 40 percent of the bitcoin market, making it very easy to manipulate.