I haven't come across one where there are documents about crypto insurance because here you are not 100% safe. Because if you invest right you will get profit otherwise you will lose your funds. If you have to worry about insurance, get service within your country. Where government banks are interested in providing you with insurance services. But in crypto you should be very aware of what non custodial projects are really guaranteeing you! I think you want to live in a fool's world. If the amount of capital is high bank services are really essential.