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.

“hat alles gut geklappt”
Google Play · 5/5 · 2026-10-12

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 3248278454

Proof data

Record hash (SHA-256): b9e134448fda62b389c623e5a3748c7cc1b311ce573fc5093ba8772101d7ca0e
Signature (Ed25519, base64): 0pNPnmlwLEaUpRQt8zzxJbfk1cOFPf6zhAE5bAikoLGsDxMxCiXVcmbWoYT/XR4tHYcQ9HnMM6tbRzGYeQD2Cg==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["b9ddad34980607125e2c84a50a8ae04e0f28e9cad796ca80269032a229e45696","fe1cfaf03608d4a16d1fb35213869400596983b1190bfb134cf6dd8e053ca4d6","86492a2cb98e18126460ed58959774c546354469a0ec57fcb36d29e864fc9557","b721064f402bc3e01c286a278bebf1234b420f53417d408ba5b8b1c32e5f1886","066ef8b41f9c337d8948933dd07cc379c6ea1753a2ef6c7f01b46dce7fc63750","6cb0a230eb475c88e5f269e73894f04adb1b5b7f0e05a69284891d6ba7b775a2","63815b6096ce9be4e34bd97de3105eb9f4608dc36a950952345fe60c94e02140","f88cbece94520ba3bc0900105ee58932dc003673df918a964b761b8ac9da12ff","3c53e75bed49ba527c016e66f59995facf9d5bfae513484c03da13d4f99acff5","a75f1c241fb5d2a78355490d5f64a9f7a9869645ddab36da78c3a032038d1f9c","347fce49394b6141bb1e4fe1f1289224acc23f3bdd6d97d335d36fdd9058c275","2cb3d03c4fa647655f06857f3e55faacfb812f8dc7c257aa10761d43e9fbe12c","a77d6603ea315a1a40198ffcbd12dd2bb735b43c4a160be5cdd17c50135fe05a"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…
Expected log hash: 4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"de","page":"brand:zasta","quote":"hat alles gut geklappt","rating":5,"review_date":"2026-10-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (81db1abd6b6e…), 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.