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.

“excellent app to set up and adjust watch”

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 2543266411

Proof data

Record hash (SHA-256)

fbb35e20c27027f7e0eba45498782cdd6c72f2d1758965367d35682c6bb3778e

Signature (Ed25519, base64)

+g8BBBE950H6wJhw04NMJP+TAmdo8bWZLp5WDDgBS68qfNu/P8eaIOHtWCD339yaIi+6ZX1QdK+cmm9sPPrJCA==

Merkle root

8ffad6e97d1457610bec7a891f189d1ba7dd7a92ca672c69ff1ce3283acb4b5c

Merkle path

["fba7ea799043b9cfba320739b1a5aae714790886861c7e0e2f30e2bb5ca8b08a","a515382467ece0762cffeb557a02b5eb3a3088428b0e3115198e9e993aa84a83","5c35cbec1c00fd00bf91c7d08087da898a8de513c00f99376daa9763fbea088f","ce222cb0839ba1baf01e460513d1122aa14a06dcd5c10c4d615bf796b103f8b3","5463a9666a8dc2506783256ac072257fca3f8a4c0ab7ad4ec30c834e90d565fd","5de00ac082fc6d4d3583eafe275795edadb1e4a45c31355992015cc242275c93","75df65756bb4bc3d62c53e2ab4b5f9b6de1e578873bcc0deab2e1fe59caef407","826341f92a351827d9cd7e4ab5c69b18d5309f060b2e9bcca5fb93f3e423b1f5","f69dba89345c085265d7f0bfdb1634310008a13aa262a7b8ff400871bdc85851","df08cddd70f2448ba30e29d235ea68104f5c2f6976a4325a0ded101da9a6bcba","55cc2043e83be6a2b4799cb70c4f258ae16af88ec89df776812174e82dbb32df","7c94ff27d324cfeabd6b92fbe8fbca077bdf14d29975169a3a05e610d1bed13b"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543266411 · entry 108e9186e8c5677a241f…

Expected log hash

443ef8f29d5167ebb4c56a46778facd07b7651afa8db2d089c14a991ce0d04db 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":"v1787284817344","kind":"published-quote","locale":"en","page":"brand:casio","quote":"excellent app to set up and adjust watch","rating":5,"review_date":"2026-08-18","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.casio.wac_app","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (8ffad6e97d14…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.