{
  "module": "humankeys",
  "version": "1.2.0",
  "what": "Proof a human typed a text, live. The text never leaves the device; its fingerprint and a score of the typing rhythm are sealed.",
  "price": "50p a month for unlimited proofs, from the credit wallet, or included with an API key. Checking is free.",
  "verdicts": {
    "HUMAN_TYPED": "Typed by a human, live. Nothing pasted.",
    "HUMAN_TYPED_PART_PASTED": "Typed by a human, live - but part of it was pasted in.",
    "MECHANICAL": "The rhythm does not look like a human typing."
  },
  "routes": {
    "challenge": "GET https://sebbi.pro/x/humankeys/challenge",
    "seal": "POST https://sebbi.pro/x/humankeys/seal {challenge, sig, text_hash, intervals, counts, viewer | API key, reference}",
    "check": "GET https://sebbi.pro/x/humankeys/check?code=HK-XXXX-XXXX",
    "compare": "POST https://sebbi.pro/x/humankeys/compare {code, text_hash}",
    "page": "https://sebbi.pro/keys"
  },
  "text_hash": "SHA-256 of the text as UTF-8, after normalising to NFC, converting line endings to \\n and trimming the ends."
}