David M., 44, has made arrangements. His wife, Sarah, is named — in plain language and notarized ink — as the sole heir to every last satoshi he owns. She will also, sources confirm, be completely unable to spend a single one of them.

The will is described by all parties as "ironclad." It is also described, by the one person who will ever need to use it, as "a piece of paper that says the word Bitcoin."

Sarah, reached for comment, was asked where the keys are. She said she did not know there were keys. Asked about the seed phrase, she asked whether that was the thing on the metal plate or the thing in the drawer. There is no metal plate. There is no drawer.

David, for his part, remains confident. "It's all in my name, so it's all in her name now. That's how it works," he explained, describing a system that is not how it works.

The estate's entire access plan lives in David's head — a location his estate plan does not survive him to reach.

Marcus, the family attorney, was less sure. Standard documents let an heir claim "all property," he noted, but a court has no power to produce a private key that exists only in a man's memory. "I can transfer the deed to a house," Marcus said. "I cannot subpoena math."

It is, this desk notes, a perfect inheritance — right up until the single day it is ever needed, at which point it quietly becomes a very sad PDF.