Profile of Cameron and Tyler Winklevoss, who are building on their successes with crypto investments and the Gemini exchange with Nifty Gateway, Block-Fi, more (Michael del Castillo/Forbes)

Profile of Cameron and Tyler Winklevoss, who’re constructing on their successes with crypto investments and the Gemini change with Nifty Gateway, Block-Fi, extra — After dropping an epic battle with Mark Zuckerberg over possession of Fb and being shunned in Silicon Valley …