That's one, and it collapsed. Ask its victims how useful NY's protections have been there thus far.
Gemini didn't collapse. the title of this article is clickvair and it purposefully confuses Gemini with Genesis which isn't the winkelvii exchange.
Are you thinking of Genesis? I was talking about Gemini, the exchange owned by the Winklevoss twins. It has not collapsed. (Disclosure: I am an active user.)