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.

“I also really like the app!”
Google Play · 5/5 · 2026-09-03

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 2789279696

Proof data

Record hash (SHA-256): ff158233c8b917748ca7421bd392c51673b1210a7a806f9e77b734c9786e1344
Signature (Ed25519, base64): T9L3WOhbWq7Smpx52BPXVeTO/q6DwVdowjbB6ttRjnbdu1HeYWOKrXLHFVM7myBgjeacfODTPR0Q5OAx60VzCA==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["ff1146c5fc8abdc57eb3e0dad08f321772a32dd439dbf5798869ed0931bbb114","4e55e47ed41b6c31183ba9b6456db625366b1a2d01413872f51811bb4310210f","c1acc67d68d6a78306ea67aa7312dc31a020ec5dee60bb64626c6ec355d52df8","0af2428aabec256cb109398b9221177e46f2cd858858836cb6f8918665d1e0cc","99fbcbc548cda3f14847aec3c5c4493f37aedabd728cc8f4e5f85b371aa15996","d4a0041782361caf35583512158bf4ba68c4cac4e8cc6bbc0cb916c8d8d6b302","a247ed52ab14fe45822cc954aedce6ffa66e4141067a3ca5bc2f0d74c90759d6","3af5c0baca032a81fd230b27683fe61380ea80301075258ba439ae76d569f1fa","9ad8b3800edfcb5751dad04e680e2cd13e3c1dca7475d94a004be8cf31efb983","f0cd1a8267a1839d529db5d6bec4547c492ced885b88c2cf73de52fbb7ed02ec","2773f567c680d36b45e8ddb9acbba84279386972ec0e40784af0d4b71e825e3c","da7efc44d6047fe3e579eca002977ed1346adde2d400823603e9388f5b72eb53","46bcfbc656e0e2a380a8a94cdc0be3d8b4c668e5f9e54a10ba396a45b371339b"]
Anchored: 2026-09-11
Public log entry: search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…
Expected log hash: 05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:tuta/service/en","quote":"I also really like the app!","rating":5,"review_date":"2026-09-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.tutao.calendar","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 (97eb1062a862…), 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.