I agree with Owlman. In the U.S., when someone dies, a death certificate is issued.
Nothing is issued which names all of the deceased person's heirs.
I like Owlman's suggestion of a certified list of heirs.
: One of the reasons such a document does not exist in the U.S. is that people have the right to decide where their inheritance goes. It is perfectly legal, for example, for a parent to state in their will that one (or all) of their children are to inherit nothing. I know this is not the case in some countries.