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Then setup the system to be more analogous. Make the publication of key issuance under this mechanism public after a period of time.That (somewhat, barely) addresses one of ~dozen issues with the proposal.
>Again, I see us falling back into an "all or nothing" view of privacy
Not to be too pedantic, but I think the distinction between privacy and encryption is incredibly important: almost everyone agrees that privacy is a gradient. The disagreement is whether or not encryption can be a gradient. Most people do not think it can reasonably be without undermining ~everything relying on it.