http://www.bbcweb3hytmzhn5d532owbu6oqadra5z3ar726vq5kgwwn6aucdccrad.onion/news/business-60912789
BBC: What is Bitcoin - an eight step guide He also provides a primer on cryptocurrency, especially Bitcoin, and why he believes it is a valuable alternative to the volatile and highly-controlled Argentine peso. "When you have restrictions, you need tools for freedom," Mr Ferrer says.