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.

“mein Anliegen wurde zügig entgegen genommen!”

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 3199295725

Proof data

Record hash (SHA-256)

4b7603c8846573ba299504e96ab682a0722c1699a66c235a2cd53f5d50e5a97e

Signature (Ed25519, base64)

6y0nllEg6HfJ7lFs11VpqjPU/Te0ic4G1vPjrxsLkmK/88gRRrkeu6duwDidfDkUjGfkvthHHY+XvVXBqXMyDQ==

Merkle root

cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e

Merkle path

["4b7437858b2e970f07b69fb44a1c2222a3c8a65d15e9b8bcf1a19b70bf50a3b7","d08a5f21029a0379ffc5be42da77c5a35dde31d94136905cb6802986c50c41af","60bec7563955d7c806c1e493486b8cba4f5db65fa708db25a94f517e0a484d28","00bf35a4540207251252f5746edc1a87e50cb4d9064ffe59a1bbc355fa432582","560989a23786276b7153de6a15f5ae03011c29ed2c6602409ca00a9d45c81fb3","3c88b25e9409ae7d4b56829cf02d54e3715defdca48d04597da7f9009acafd06","2699ae26cac47f70e919b20e4e2a7891bba8b9685588841aa48bb7319987b0c2","656a6fbbc10d14a25579d632f29004a9b8e07a73ae161841a234a8c406c7b383","878dd02d4b2152eff5b5381ecd684d56406b8cf05ba7ccc3e2c6f125a96ffe88","846ed1ffa0f79c7c883aae91486acd852b188223eea8dab6e949dde80d12b3f6","6399f176a566a664e6bc047e39a9201bc70b846aa40224bb4200ea3a20c50435","985e8226a3e0c2f6e4183d2b437a359f1bd9336267c62cdcc26c3031df5f08e9","d5c54f6be615dd1c8e7a065afc12e543325363bfb66a63065a4aa1d52a1dc406","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…

Expected log hash

59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"mein Anliegen wurde zügig entgegen genommen!","rating":5,"review_date":"2026-06-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (cb5472fa7b7f…), 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.