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.

“Alles auf einen Blick.”
Google Play · 5/5 · 2026-10-31

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 3668983302

Proof data

Record hash (SHA-256): 279b8bc3919906d79b347a0ac53698b17e2e5e1bd666650274f65a016daa781d
Signature (Ed25519, base64): TrZQfMDWtJVlPspAegYQWF9cuyQhE7BkBbiDqllmMLsufJq5oBtCLZuhcOFTKSjcjWCICGyA2el30m8ui1yJDQ==
Merkle root: 405d85333c1c03a7ae86f6b232380a3f0e8a386e4cd2c9bf5bd2480ae9ba2988
Merkle path: ["279b4b110ca85a1b6e086b2170b1968127607b68305533e55d74642615809346","239b7b4318828f03d1399cfec16ef0d6de1f698c98e9fde1b321befca745e482","892cd41eef9bd118c65998d7fc701683a37b3cbf45b8e9a0e6414ae5bc4b5415","a21133796f137b46b474bfd2f3548bbb8eaea7664b81bce755f36ff79c55424a","7f97575e1aa5924dfb96053a2ee23c128df60a6b0ffdbebb2c34af6c39cc9160","187f66cf38fda0af4c5a15386044b790f6b899735a6a5cdfda40b6ecc15d1d25","1c0cae922f82d203fb1df5e33f204b382de6775b59733c5a3d2684c34c2ce107","33f0417cee92ce7749a4de34aca6d33050a1046a53928e3ed2b6de67087bf127","8fcf9080c25e391fdd2993e30f2a7df46a8532c01473a5bcc2ce62386494dd66","2e62fe15b6c735a1003e2f3f0924de3b846bad2f906c8890d7aa4f19248296ef","e76497328eaed642912f057fbeab158eca387e5b4455b6e851f137eaa23da451","786bb926eb6a5735d53cb29a06ff3e65b4d29ef8fd39d596873e263e6e08aa4b","19a71f7971408d12f874f3ea09b06e4f9b44cd26f6dbc08d0466f033f9881220"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3668983302 · entry 108e9186e8c5677a323f…
Expected log hash: f9f0f1b08ea9ca6d951fb003d493c517d980826708a70b4fc99c8b9c98e286e6 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":"v1793707617662","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"Alles auf einen Blick.","rating":5,"review_date":"2026-10-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (405d85333c1c…), 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.