Coinbase is finally supporting SegWit, an update that could fix bitcoin's biggest problems. Here's what's happening.

The $1.6 billion cryptocurrency exchange Coinbase will start using an updated version of bitcoin called SegWit. The company announced on Tuesday that it finished testing and will roll out updates throughout next week.
SegWit is a politically contentious update to bitcoin which many believe will scale the popular cryptocurrency, making it faster and cheaper to use. 
SegWit is an optional update, and only 14% of bitcoin transactions use it. But once 95% of all bitcoin transactions use SegWit,