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.

“Proton m'offre la commodité d'un calendrier numérique”

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 2495157846

Proof data

Record hash (SHA-256)

259bf0403d146be41a4f94f3e0136812f6cd5e4025311864da10f917212637f9

Signature (Ed25519, base64)

lSawzNc+ngY3mSv1HipFl7qeHw7zfSUKCwf2nspzXBL1SvXmQTUcGc+9Cl5IA1pLIicyXV5+L7LtJ0R3w6SHBA==

Merkle root

5f465603cfecff8c631b83258a9f794433a9fe1f55c92c7f2359c24d5239d7f1

Merkle path

["25a016c0e4d31c3a1f025ec851cee73a97dda34ecad6fc25b00370453acf2b59","b4b047b85d340dc4e9544cab884fba41456da8261e4d31e044d4c85d897b9a82","b56ee12c007e9a490b4eed55637b10290d4cb9841797326d7799ce39a8989023","09f7ea660a0375604c1caa85791762918758624ee9ac87ab3ec5cff09e445993","5bd0e6f9c85c35fe890beea9d480e2268c879c1bf4aaf2d9fe8ebe889b3ad75d","8d2284a48c69a2b69efacc4aaefca8e417096f9bd53e5a124a722ebba546e2ab","4960b6b38144e478c36128a30a3e4b1c38ee42ca7c2a8003372cb94c9e392632","3452cef7bbc0c77d1719a5c63eef6f3455a1ceee2c7961c7342322d1e7a42ac1","3348a1f13ad56de456afe4310f04b94845fe00bea2a4489f5b1c3e31d37b1ce0","e5d0614fd1c60d9f9360f7266b4c963a86f354de95506ef1bc7db99fe68d7059","71c5da0c0c647d88017477b8934f94cdc056138b538016699571f069a61cd5f5","7ea6d2e90adc4cf73046aede6ebcd2b228ebb39afdb090f404293e480968318e","f263180059cdec95b93f28a9a635234e8f009df51d66181b902844414d966b85","3fb39940a6132e03e4fff826dda6ca0582558fc639bb5eb857201917cfd7b8b5","fc87a80257c5f9d9cefd8e12d2bc08e25e0ff70c414cc5debe7f697d0b1cfbe6"]

Anchored

2026-08-17

Public log entry

search.sigstore.dev, log index 2495157846 · entry 108e9186e8c5677a0eb1…

Expected log hash

3272f4e3e87c1e1bf0369f64c72e7fc63fcfccb2635eca462b023cee408b7ecd 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":"v1786935515462","kind":"published-quote","locale":"fr","page":"product:proton/proton-calendar/fr","quote":"Proton m'offre la commodité d'un calendrier numérique","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (5f465603cfec…), 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.