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.

“best app for editing of pdf”
Google Play · 5/5 · 2026-07-31

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 3220996539

Proof data

Record hash (SHA-256): 18566967a3cc2125d756733f69753799aba34d8de30b19b2d427d4494ab49ff9
Signature (Ed25519, base64): rwNAS6NBOj8uvS0qh0mGqkcWl38vrf2iHefYjXIu3PGxHx4CpAoPN9GqWzT31KmkTRUN8Ru92q/hGkIl/+JcBg==
Merkle root: 1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22
Merkle path: ["185e1111ae98f83f8f68abd052e5d310863e661ec78363c862b21067f81fba7d","09b386ab41b8b3c9847543e6a9a7e080e170c83a1a003469758ea083a4b480fd","d9765f3036eff7026fb3ff7cdae75c67c4d3e48f4cdaba0e8d5d5f0ae7177495","8cc2be39b9afe80ddbc32c1819c5f536b320ff5abd8255e095e5ff53e95e2eba","9f94153fff747ab10013c2b234ba348d0a7e13e63220757de387a12b5947a5ac","b39b51e0606a299b52e99f1200a7597ebcd5bf2f3328adab1d4be148ead30ee4","753361a4d1f4d718839b5cc97cca1a4314dfdca0efd5d35b7ec18044af94d053","a09e5c163a017ad0b0964933980d9138bf70d28869cdaa27a8bd8a2ad1c6ae31","f5d5db31b366b72b634fabeee49a4fac8728b1ff748c1563bb31794d51adab85","048f4f351f46d081460e11657059884001837ac39f573b61215406bbb0a8467c","b95c64b286fd7d6a7e842c7f3bdb75225e5b731fc95abd0e0c7d50834fbbe026","affe0a53d536804a9512c630206a4b534a27488761c0b34e6878dbcba4a8ae6a","bd64ca269edabfbd30efee623435236838862399942a0d08ad142d3df41d1142","8547750c311d384cbb1a945300d6b6fb4f4bd2b78af7177366b3baa4b4c1e724"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220996539 · entry 108e9186e8c5677add5d…
Expected log hash: 00694de1434e648cba57bf07fb439ed90ba501083441667555bcf619bf5edce8 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":"v1791779426071","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"best app for editing of pdf","rating":5,"review_date":"2026-07-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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 (1b0b408c7cf6…), 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.