Would depend on the nature and extent of the crash...when the mortgage derivative market crashed 10 years ago...the world governments had to open up the spiggots to pump currency into the world markets or else we would have deflated into a black hole...so now we sit on trillions of debt dollars subsidized with near to zero interest rates waiting for it to unwind...if it's something that happened sooner than later...I would guess crypto might suffer if the rush to "safe aasets" meant US treasuries....gold...the mattress....however...if a few years out from now...crypto is much more accepted...It may become one of the "safe havens" people rush to...