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.

“A beautiful application”
Google Play · 5/5 · 2026-06-04

Checks (re-run on this request)

✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
✓ Public transparency log — Sigstore Rekor log index 2514967984

Proof data

Record hash (SHA-256): 0ba7ca8bc8f85df40d48059f40b20639131732222a6af796004ad14dafedd319
Signature (Ed25519, base64): b0IuzLA7dx8FvZEMQRAtoftWPfEZd62/8lY7T2rxvnt+iHRf4oWGHgb1h1Lrxb2Q18rk2KTnprFxXjjZhmPjAQ==
Merkle root: 9ddf6b9053b6e5e7a2f15ee7f3bfc8dfb72c48a1917ae5b7e553033e3ded6523
Merkle path: ["0ba24748e30801f6c587524a2b2ad5c885f179216afc1b3fa47a5c0e9345df84","ce00ded11aa64a256492b2b15ef415e1aff92c293d48ab2ec91435ce42c72c2c","ae3c988249478f3a3ce1756077336bf0638b6b02ce7d96d139c5e06d53d0ed95","6198f92a88eafb23684b37aab8f77b1d14f4337f1900a25d071f7a05ae760089","1246f0519c2d2865a38951359421c7b18fd364234f9a0836da85eff8acdaaf98","3d553e871e71cc828f9cc7c91a145abcd66546ffcba3cafecf725cbc249cc718","5631c8e1f8163618365da89f663de8afbbf5cb95b655516d4ced312b95fc49ac","1cc0241fe2e5c404bfe8b45c1cb7f067846b7964fcdaba89d9818a5758cb044d","4fab6ffd794ceab59a863f7cbb1f73d1f709efd495c4f6b1172c24d0f97c2bab","62bb60a9913631c1b9d34dd951571334fe9f161a482cafd2a776c54cfa0d0ee3","038819857fb4bb0d6571d3d98bc6a7629b4e9068d5be86efc4eee63acee35906","dcfa3f0fc39e185ac4a0c3ac51da16fea53e6a2f4d1d1050a83d0659142cb3f6","48fbcfcef32592ba72653616c6b287b5138e378088c17384b9af4bf9ec9a216f","a4308f946a16111c9d609738b93b2f2ae813ce88e33e490f89cf33e3a52e64d3","50c4eca268fbb41f8c6bc36d8a5d1b6cc09733d96f0fb33e6cb584096c56f695"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514967984 · entry 108e9186e8c5677a902c…
Expected log hash: be0cb34bbab326d10b25013c37c9294b14554a6c6e9fac3dc68c06dc2c3c60e7 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":"v1787135269737","kind":"published-quote","locale":"en","page":"product:smallpdf/smallpdf-mobile-app/en","quote":"A beautiful application","rating":5,"review_date":"2026-06-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (9ddf6b9053b6…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.