I am selling some physical bitcoins for a woman whose husband recently passed away, among the coins are several Ravenbits with grey firstbit stickers. Does anyone know how I can try to confirm if they are loaded or not?
if you have the private key or public key, you can always check it on any block explorers but if you don't have any of it, most probably it doesn't have coins stored on it
Yes I agree, bitcoin and altcoin all use wallet. So all you have to do is look for the private key addres blockchain or any other wallet. Maybe you can check in the browser history of the deceased husband's computer, what wallet he uses. After that you can find his data in the folder folder stored on his computer.