Big names including Bain Capital and Mastercard are backing Barry Silbert's bitcoin venture

Big names including Bain Capital and Mastercard are backing Barry Silbert's bitcoin venture http://www.businessinsider.com/digital-currency-group-launched-by-barry-silbert-2015-10 Barry Silbert doesn't appear to be a big fan of 'down time.'He sold SecondMarket, the startup he founded that morped into an online stock exchange for hot, private startups' share…