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.

“very good pdf scanner”
Google Play · 5/5 · 2026-08-01

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 3221102617

Proof data

Record hash (SHA-256): 19395f5bd163ee80b8799e940db5e2da74e43d3e49db0e284b498192858c6da6
Signature (Ed25519, base64): Z5KnE42XymZJ9JMxaC4jMX/5KbFuFMAWM5jPYY6CYvL/Xp3fwBz5Efo2c31Apt4/kQj2iYBKHyicnYNX+fXvCw==
Merkle root: 0eabe705d05480191badde562bf975cad5c107b96758d59c47efce7f02d55f90
Merkle path: ["192f1818343810a15fead6725acb93cb5199a2b5b199d98ceb83558e4e0127e4","401cff6d9a248c872be166c196cdf58d83a4f64b9510b30a6b6c4bfd68a5a550","84593de4080dbf7c546bd521bf93b6060e0b6ce21fd57fb81844e8c16e8c7a02","60314736a5a27c24b1eab6dddf3b4205bd5976e7795261a5b292fcdc32661f39","838aa505d028d0bcbcd32cfe5c10c811ab94c515c5e63320207ee38ce7443497","b462cf0cf9ecdb113aba177ef9d954d8dbce0ce651c533ad3571cf932c54ec1b","ce615bf9aefc96daeb3524a848c867d55023326be17b149d467a6fc592534fef","b7745a0229c7d0d33a2cb4aa4ffe87b9d622b4862580cfb01fc4da8d7059331d","9b54b3d67460d7a3d5963291171e576bdbdefd8b4da30231dcbdcbd15ef9f533","78957c428b63f8bbb6a19db9a179e885ae9c7800111aae9cd2e6948f1c881868","7232acd2dfdb4f088090eab03a52ea2d5aa35d51e392dac0824cf82297b6f8fd","82f5128b6ceeedb9a831b08ffc6d055ce6f4d46fcb0cd752cd3e29e60363adcf","77b2b0d1c988b3add7b1fbedc3ecc12dd0cda6044be7bb06798825ccc94efd81","2e4cbc8181996227b6c5ce6cb00a4128780f0a2cf8618660b840716e64b4286b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3221102617 · entry 108e9186e8c5677a7ec1…
Expected log hash: 701a9a476cb781c93a6209c8572d258b6cbf70f6f15d478bab1da1537af9506b 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":"v1791779915538","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"very good pdf scanner","rating":5,"review_date":"2026-08-01","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 (0eabe705d054…), 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.