African banks have been late to the fintech party, but after leaving huge swaths of the population to get their financial services from telcos (most famously Safaricom’s M-Pesa in Kenya), banks here are increasingly seeing the continent as a testing ground for new financial technologies like bitcoin and the blockchain. “You have a headwind from Silicon Valley and Europe blowing into Africa now around the disruption in fintech. The banks are really nervous and they want to get ahead of this,” says Mbwana Alliy, managing partner at African technology venture firm, the Savannah Fund. Blockchain is the hot topic at …