In February, Finnish silver investor and Bitcoin millionaire Risto Pietilä, purchased Malla Manor, a 600-year-old castle located in North Estonia with the ambition of turning it into an international Bitcoin supercenter. 6 months after, the Bitcoin entrepreneur talks of the reasons that lead him to such an unusual project. Pietilä is the founder and Chairman of the Supervisory Board of Silvervault OÜ (or Silverbank), an Estonia-based silver investment firm founded in 2010. Pietilä has been investing in Bitcoin for few years and has been an active member of BitcoinTalk, interacting under the nickname rpietila. Last year, Risto Pietilä announced on …