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.

“Adobe Acrobat Reader is extremely fast and smooth when opening large PDF files”
Google Play · 5/5 · 2026-08-12

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 2514750008

Proof data

Record hash (SHA-256): 6b63cb3d311a326c5f45e0959f5314c2d10e87364880dd37aa3a6f1f38b55c38
Signature (Ed25519, base64): Rv2kZMX9JY8xiPfzJKjrCNSXP4Ixvvny0ov30ANU6i+D+yEerBExTd7SoH3IEZ3cN6WaUpLQZURr9D5MXKLQBA==
Merkle root: 1f4f3b5edaf264bc6a00193653378e6f11cdf7d052ca5b778d915c1c21c7403d
Merkle path: ["6b65a2c0e91483be4d3a4c161c3a90cbafcc1f1ab3e6f6840fb490cf0a742bad","ef32661d845ad3822deb5ecb0c70a4e5aaa36e1ec4063917b492f6a7d349f009","cf99c3d3cc5256d4fe4d6002cc6d4ae69c6c64981bfdbe63ad6c390196de707c","d86d13dfe74b05daaa747760c92251eb43dfc1109d5dcfb30db01eeb041b4fae","83ed30f8853394b6047d6bde8f0460c8854535576a1744f14995f905cd385e5b","671ce6b88340ef6ad353016e25cbb83832670049425a2a69fc256c7eef366131","90e36da612c87c549c0d235133286b2f93114c1a4b2e8fb0739b00907f093091","8df03cb8468b6e06b010f441359ff880c8d2a1448750806282b58afad3d9fd57","c4092bb12416984af79d8b62788a88bc33a6a6895c6a379c105142daa5b513a9","204e3f967b5746053c22ae26bfeee5b3d8ae248e4b3fbed81610b72a93093e7a","4fbc9071939473acb822f491e80d7ebb9b2f2220a5e9046f19bb48c4ebd9331b","76314edfdf88e7e9b8d1b83120396a0b82e336f95ea9a9f8e107cda76d7f1a75","262a9f81238583e2cd1857070930778ca81e80099af74b7a470c955d877ca1b0","fc5a80f8a33a91194ac04bb68228972904c735c88173cb742b33f0dc7c73d75a","354ad39e35fba32f932ca084b3a174e4cb81b7aabf68001f138a9a4088e307bc"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514750008 · entry 108e9186e8c5677a7ac2…
Expected log hash: 72d3f466bc589a4186e04430bc1133fbed10c2c1049384c2fe15c1cad3406981 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":"v1787133679631","kind":"published-quote","locale":"en","page":"theme:acrobat/price/en","quote":"Adobe Acrobat Reader is extremely fast and smooth when opening large PDF files","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (1f4f3b5edaf2…), 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.