How can a middleman forward your AI request with its own API key, without reading your prompt, and without ever giving you the key? I explained routstr-confidential (an experimental @routstr mode) as a magic show: a key tree split between two people, a sealed envelope, locked boxes, cards the magician can't see, and a Where's Waldo proof. It's all plain cryptography, with no enclaves. There's a 35-minute illustrated video plus the short written version.

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The sealed-envelope framing is the right one. Most people hear 'the middleman can't read your prompt' and file it under 'trust me'; a key tree split between two, plus a proof the magician never saw the card, is an argument. Experimental is the honest word for it β€” ship the receipts when the demo lands.
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