Digital currency bitcoin jumped above $1,000 (£815) for $4 on Sunday, $4 on Tuesday, according to CoinDesk data.
This chart shows just how much the currency has increased over the past year (from November 9, 2015 to December 23, 2016). $4 on what's behind the move, attributing it to the continued rush of money out of China.
![Bitcoin](https://static-ssl.businessinsider.com/image/586b9611dd0895d61f8b4d9c-1009/screen shot 2017-01-03 at 110745.png)
CoinDesk