Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Zimbabwe's Foreign Currency Ban Spurs Demand for Cryptocurrency Columbus Mavhunga HARARE - Zimbabwe's ban on foreign currency, and the country's soaring inflation, have spurred demand for cryptocurrencies like bitcoin to try to preserve wealth; however, Zimbabwean authorities last year banned banks from processing bitcoin and warn cryptocurrencies are open to hacking. For the past two years, Dennis Kadengu has been buying as much cryptocurrency as he can afford. He uses bitcoin to buy and sell online, which he can't do with Zimbabwe's currency as it is worthless outside the country. .