Ten years ago today, Bitcoin was born. A mysterious person going by the fictitious name Satoshi Nakamoto released a paper, saying how his new money would work. It was meant to be a global, digital currency that governments and banks couldn't interfere with.

So, a decade on, who uses it to trade? And why is Bitcoin itself - which started trading at 30 cents apiece - nowadays worth thousands of dollars?

Video journalist: Jeremy Howell