None of them? I can sign a remote challenge, cryptographical...

Raw JSON

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  "content": "None of them? I can sign a remote challenge, cryptographically prove I know the key without revealing it and still use the app...\n\nThis is not new tech.",
  "sig": "6375341cc0a45e7690eba472fea2b25627eee32a27ffcf41c0221e24e2737b83f08ef1a338c0286f9a12040fe2875d7028cadc02a52cde6d0e505d0585677315"
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