Billionaire Novogratz Invests in Cryptocurrency Firm Bitfury (Bloomberg) Mike Novogratz’s Galaxy Digital has joined Naver Group of Korea in an $80 million round of funding for Bitfury. The company “sells gear used to mine cryptocurrencies and develops blockchain technology for clients including the Ukrainian government,” notes Bloomberg’s Ruben Munsterman and Ruth David. That puts its valuation above $1 billion. “If it conducts the IPO in the next two years, Bitfury will seek a valuation of $3 billion to $5 billion,” concluded Munsterman and David. Quantification of energy and carbon costs for mining cryptocurrencies (Nature) Another day, another Nature study on the impact of cryptocurrency mining. A week ago, the…