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.

“the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required”
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 3240422411

Proof data

Record hash (SHA-256): 157b5bbf4c5d2b1b4c85155a480721f3c21036cd81198dad7cb92be3ded9878c
Signature (Ed25519, base64): IOmxnfLxKjMJkYwU04gqG7QzQv2ZlnDkhx7jFomDphnN22BZkjbObPHUkzPG4C0n4foISxEoE3d02F7ecIVZCw==
Merkle root: 825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9
Merkle path: ["15749a0c68e519b47632f38bc1e30f451dd3861d6db89f8284352125b2bca623","8a8cda32554daaec6a3d4fcb079940b4629e831c24c90c3655d1fb919ee1993d","dc5c4019075becba2413c7ed35986f6f316b2cbb183a94a6f7a39f4de969bae5","d9d50bbe191055a3cd7c4ef69e3b33d8d287b96eaaef11ab97934f66194c276f","1a270e639370f542142385a293f12b9cdff5e2a7307ca76bf1d153c58af33c31","a2270466b48b524d591eb47c813976513fcc96afd98e45383d35f5ecf2acbff9","d857171e616808e2ce65200d32f5a9c655874f23bac5c270fe1207c1b9e9172b","a4ba04b40a571b2d5f3ee7e335d935efa64456ecd0859dcacfa2e0809a96100f","3417fa32f498dc70b75ecf583ff6cc4d30082684ed145bc752c2c5bfcc185868","1910ae8476868c79e989f65f38dbc68dce63cadb169f02f488e5b2ef60ffe52c","febf287b7c32a2fae856dbf526e351f23b5b8476b4c1b3e342c1def13e494cd5","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…
Expected log hash: 8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required","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 (825dbc6ca55f…), 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.