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.

“Es ist super einfach zu bedienen.”
Google Play · 5/5 · 2026-04-05

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 2907673729

Proof data

Record hash (SHA-256): c2cf24deaee8070cc5f868d34edb00df6a00f0d08550a4b69f29e288ad50ac49
Signature (Ed25519, base64): waog3LTr6EtK0qLQ3dp4MBwbxzSScJSAikK6vkn+xbhzMfW4cUrgWWXAeha6EIruS4N9+SNeIRoLjk7hr580Dg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["c2d0d7925cb314ddb586841668992fd62356a68f35565f3306925dd5e2cac514","d04309140c8f6782b0e370bfa4fa4e622bb0913cc030e52395a87bd33c9082f4","75168357fc0a62be551dfb50df59137169bfd368f37f7d6ea9633e2b5b52b85d","c520a7b4ec411441f9514ec8a8c0eb5eb092d81964d2da8329fdd49cf70a26ff","e097a2bc35034218f01fac1048c6b52ac245445ed785e8925cf0be9e0869e4d2","ebbad5092f83c69a907d3750aa3e2ea2b490a373017da654466ed9616d8d9d47","8cf96d4999ec24eab69e7e6e0f729b7d528cdd19b50bc602ea5aece40af8a5b1","b7c2b689a22cc4b0d4ff30841000431a9257d0b14a95bb6e0a335162d73b4521","b0e17c6ec85087f19ab68508aed0fa2eb061d23719c9d0a5f1e1d9394db4931f","c13b74978a11b4b92ffacd68647f5e55e7dc77404ea9cedae4d2e04f1124de3e","d6d7ec5b8671612f1afda6d1c341da4ab277e6a515ef03b097a08ef2f21b6a1a","8e90fbff84453d26da9a25ba9530d677aecf62355e82abaefcef4642ecd6818d","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/ordering/de","quote":"Es ist super einfach zu bedienen.","rating":5,"review_date":"2026-04-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.