I am not so sure if cryptocurrency as a insurance medium would be a good one becauase, in itself, insurance is made in order to be a contingency fund, and so, it should have a value that is stable and unchanging even through time. Just like money that is placed as insurance, its value would not change even after a couple of years; however, if it is cryptocurrency, no one knows what would happen to its value after some years, or if it will still be present after such time. So, it's safer if it is with money. That can only be done if cryptocurrency when its value becomes stable.