The state does. And once a death certificate have been issued and filed, proving you are in fact still around is whole can of worms of its own.

eg https://www.theguardian.com/lifeandstyle/2021/jul/03/they-sa...

Edit: and a few others https://news.ycombinator.com/item?id=48060857

The Romanian man Guardian article has a great and horrible quote:

> The court told him he was too late, and would have to remain officially deceased.

I don't. But many others do. The only thing that let's banks and other companies know that you are dead is a piece of paper called a Death Certificate.