Oliver von Landsberg-Sadie talks to Fergus Nicholl on BBC World Service about the Bitcoin Cash fork and about Bitcoin's popularity in some countries.
Why so much investment from China, and such activity in South Africa and other emerging markets?
Also in this interview: Bitcoin Cash surged to $700 soon after forking, slumping back down to $300 after a day. Which challenges does Bitcoin Cash hope to solve, and why did it fork? And why are some people suspicious of Bitcoin?