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 coupons are my favorite part”
Google Play · 5/5 · 2025-12-16

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 3241341297

Proof data

Record hash (SHA-256): 48b25d6c1c12fbf910de81bfb8527f3c1a434fd9496d415e58b50148df6d24df
Signature (Ed25519, base64): nBz1lrkZsyUJqcUJ+GSfEXfIX8omVCANJpxY3NaJPojPBuvEXRPLvF/6ZwYoG55qsiq9kYurKw/Wh7SQXHNHDA==
Merkle root: 4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265
Merkle path: ["48bd09e6e37eb6bfabb6eb848bb2abf6c020a375dd674b7e64fe579d5ac33b5c","f5bd32e7fc36460358cab5011c2cc380630123e01b7b2b765cad48922ef7dfba","bd86dd086e484495791db2154060f579fa89aff725ff7f68045bbbb46f64a031","47be504c6d7622451e6c5754fb1e9becdb873c48a75df02d6c808cc7961c1e63","686ae53720f9cbeb789e0f5f4e538aab034cf1ca8427a4f21870902e45d81ec6","d8d1635c6997ab394a1b9d15fc1358f2c4395a9be27fce0c4704d46e19bf018b","a0f08c6e661a6c5d0ac0488fdb7c73439d8ccd165946781b82c90e1abc999e38","686d1c5090be5e67c7b8a6dd8244dd52995049d126a803373f3f329d54ac224f","574e8417f801088469d97f9a239ebd3c2f28c47ad07c9e7950c86bae5bdea9f9","b14f040c619a7b536394ce1f65e7df3fdb31940c94253761eb726f3abd5fe045","cd3e9be594270f97347d23985c19ac899631a6773a3076c34d54ac880cc95482","1a39eb8110f60cca7b5d74c4b4e1ee494aba4bfcd1f4082136542cd2a427ac26","acc667d852c71a0e84a086ab20f7bbad3d8ae083a1e44cd20501ad641f662bdf","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…
Expected log hash: 39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"en","page":"brand:uairango","quote":"the coupons are my favorite part","rating":5,"review_date":"2025-12-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.uairango","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 (4900b1080bdc…), 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.