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.

“Impossible to start the machine”

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 2948162176

Proof data

Record hash (SHA-256)

16dc029c712914e0752267618d56b13bd9403fc5598bab68c72958a8f3460db5

Signature (Ed25519, base64)

6SNv29BbbdhUmEj0G294Sv9TM0X09+xH0YO3LW1qn9GBUm8QmlD/3QJK9h6pzDZ4bE3z8fQwFky7NEtomtfEAA==

Merkle root

5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd

Merkle path

["16db2f67479cf486b2b89a53b578c8f6b3334348fc2f0914ee70d2dcd4e30059","c4b5032bacbf408d24b472d70ee84304b348abf1414330feebf64c88198eb7fb","7252da7f67df1b7958b1a7c69c0b03d6603a6af374a243b3effb8f33615f6255","89ed1736a9c46d91588eef36c08d4fd1e9a70c46c35130fe3cde4f4e5bb567c5","169f643a4b0a4ce9c323568c404cec802e56d93ff621e5a351602886040a7d91","183ecad9ed0b36a7b09d5ec72b3e6614f761a4a6e7315addfeef9d146e1400e0","41b55d5f585618a1c02a17557be496dbb910c26695a4199dd832ad78b9fd0aaa","6ad2b547d559472f3217b1eea3182e970368b843c4a5d175a33966687fd3d293","64a83832a5005be8ff9d9d535211f3ac2845f59a293de3424560a9d5c2613cef","419abc948e0c2d2a5a63c4564949e2ddcb63e1848d8510ea3d6a674aae51911d","026ef5a0b1eb3fe6da2c140a5dd82487156128a94b90bc21aaa920949b4159ed","6364e68670997f2580620295dc73fc1bb7219986bdf8202c9b9ef24d8e7f20d7","a46038d90afa57a10c269469667a209623fd066d3f084698343feb099fcfeaea","e892ec98bb605644ecd2848bdd788a136c626ca940d293df8f2f1ab99110b2e3","eb97a4ce74ce5f5fa16f1703481b35cd770316cd3d34167e9b76f4403804f896"]

Anchored

2026-09-25

Public log entry

search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…

Expected log hash

5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"theme:schulthess/quality/en","quote":"Impossible to start the machine","rating":1,"review_date":"2025-05-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.schulthess.mobile.android","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 (539721061967…), 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.