Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“La fonction la plus utile et la plus difficile à trouver, à savoir la transcription de texte par OCR à partir d'un PDF, est payante.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
4a03622945958cf460f138f71851bd6987effa23bf0bc87f5122f30b193c1a83
Signature (Ed25519, base64)
Qy5VvQN4zDSwkbAybzFEPdc5yp+P5i92g+b0KyOUMV762Fnp1enUXmmKd9bkk+GKhPR6LMz5a1tezKyD5D1EBw==
Merkle root
30b81ce96f52ff8c37a1dce6a2cf1045c2f51663c1ddbd5ca071d040e32c05d6
Merkle path
["4a0458281230ae9299141f57e38747fc9215142f20c6b93ffee95a69b215bddb","7a8822010068be966442f2a345f8c7b7719df923bfd9c8f782e746747b79b564","f113639a094dfdeb5ce397694705c49c1ff94a39813d9075bd044ddb1086cd66","eb8d65e862147ffd368c6330ef25a83e1a72e9efc2a899566752edd28c6df2ac","d44011b8ee358edb7bc7d03f6b606875be2263f2d7d985508764c4fbfbfeb741","de54751806cc2f38a2abae9763f9eae2f81a64df02eaa22ea016d0c8ba4d9d6e","59a602ef43f882305c82cb3946fed8b606137de795063027087dbb483f9a5349","d99858ed1a69a99448bada3701ba0b80005379a748c37e23af7797a026dbfbf1","fe3d38bfa6711de54be81c9b1cca7d88c58ef3acc32caa50aecffb986f092bf4","dbd53f398e2b4bb3f326576de5dee90d404f3721894ce211236f79a4d3adbe65","c63f933a640a41f475141dcc7c88b31e6f92b2986b95fec323fc8f9b20688b4d","bd01e5af341b0040835e356bf2d0bb82243c96eb7749b36ead48942b5f9e156c","21ae9b3d04542d62b8bdcb6f03aa786a4e9bda8ae0e825d8c3abb8e6e1018da2","d2f0bde8db363c9acc10fb20e031bdddc43b684fa5984306f2efdec113caa9a4","dd9b0a9d584b044c4116e1c10c4b8cf4a06383a771a07c9f3d39f998f23cf36d"]
Anchored
2026-08-19
Public log entry
search.sigstore.dev, log index 2515243153 · entry 108e9186e8c5677a8eb5…
Expected log hash
314ca716b1ad71ca29fff6da960e81a719fe30fa5fc14d8646acca79a7c09353 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.
Canonical record
{"dataset_version":"v1787138594002","kind":"published-quote","locale":"fr","page":"product:smallpdf/ai-question-generator/fr","quote":"La fonction la plus utile et la plus difficile à trouver, à savoir la transcription de texte par OCR à partir d'un PDF, est payante.","rating":2,"review_date":"2025-11-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

  1. Open the Rekor entry (pre-filled with this proof's log index).
  2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (30b81ce96f52…), which ties this proof's root to the log entry.
  3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
  4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
  5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.