Oddbean new post about login | logout How do you unsign a note once someone has a copy? Isn't it like un-telling a secret. You have to trust the person you told when you tell them that you don't want to tell them anymore and can they please forget.
You just need poisoned relay and client and this is broken. I'm not saying your proposal is impossible, but my mind is stuck on the untelling of a secret example nostr:nprofile1qqs8x9lez0pauuu7sw4jmhr8qz50tjh5t7k95qkx4zrt2hhekl356sgpzamhxue69uhk56t8vauhgmmd9ejxgmnn9ehx2aqpz4mhxue69uhk2er9dchxummnw3ezumrpdejqz9mhwden5te0dehhxarj9enx6apwwa5h5tnzd9aqye5vk4 used. And I can't imagine how to achieve this in a system on every level.
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