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.

“nutze my Concordia schon lange digital”
Google Play · 5/5 · 2026-09-24

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): 8e06b9dd50a71ca1472dfdb7932646ca7d73d16b18de0fef43cc90c5ae3e36b9
Signature (Ed25519, base64): 7foyWaN9ldu+/85AspFBsqPtf60urJOPB1BvV0pTAOa12FUupgZHmuayReJunl6e4pF18fNgMKwpfBoYfLlqCA==
Merkle root: 4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265
Merkle path: ["8e03cd432129c1ca5ed65b9a0e7ba38a442406d38a6e45fc5d114dd9f4d0a932","1530c05ed530459ed4ef0112a45035223ad69b10efe9e00a7fe80f442793525b","e5b80c66824e75c0804c91df2690bc8eb39dec551b4339edcafd07c8ef115963","725f602ab5c27932e79b19d1b8f24d09172c7572f27e54efc9003190899fb986","61a553098a9c16a31e932dc5d51f36c1dd1858c0f3d78954bcead76b2135357d","8877e47bbc7925c50eb8874aa1bc1e0e5a6c94244ff9f78b31b62298f0c389e0","fa7b24bd2df939a2b134ff69a878d7dc353356d05352853822103fe2ca52cb03","d858db76ef11a40b99fc2d4b7b39ef4e29642ba3761f7ab675bd3fd356d85330","abacd3d5212b2681be6825aa6cb73131ed0e4e04909f5d14ca99b9e7b2312569","462763164ea8fde15ea2e9c499fb815a9c1a563bfdb42efce01e7e977b9cfa82","8993aaf2296bb9f7599d3006679678a6e457d3d795e164713cfea8a37fd08eab","997c35181cc87d08c651fc994a2fc0e89f6befc82bc348f58aca9a735daed323","fcde407cd823adf65f7404afd4b1ba5062d4dc9b443a0ef9b9102b09f040f91d","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":"de","page":"brand:concordia","quote":"nutze my Concordia schon lange digital","rating":5,"review_date":"2026-09-24","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 (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.