P.S. does anyone know the legalities of cryonics? For example, suppose I pay for it with cash advances on all my credit cards, and then "die". Many years later I'm somehow brought back to life... do I still have that debt (plus interest and penalties, of course), or has it been wiped out?

Legally, you're just dead. Your life insurance gets paid out as specified, your assets get sold off and dispersed, your creditors take what they can, and after a while, the files are finally closed. What happens to your corpse is a private detail.

There are cases of people returning long after being declared dead, but from what I remember, they usually got very little back. The law doesn't like loose threads; eg. statute of limitations.

(And seriously - interest? What's the point of charging a returnee a few centuries of interest? If the relevant currencies, sovereignties, and entities even exist, compounded interest could be in the billions.)