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.

“Guter Preis für den Funktionsumfang”
Google Play · 5/5 · 2026-07-13

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 2632385362

Proof data

Record hash (SHA-256): 0aa918205109cf3bfc86434252b85c5b5816771ca90843578c68857a4c259169
Signature (Ed25519, base64): vETOE3alKKTw1sUPF6EuWpSoDpaDEs8FQJ6/bpFgOKbY4Irzq0B/tvgFUvr8ThV75RObaac91zqN6K4ydDebAw==
Merkle root: f61e30d941fc6fe4321f44fd609b95c61e672bf5a5b9cf2bd801d7c6838aab08
Merkle path: ["0a9c9823fb123cc7f165b9b46e0b27227baa5c72d419f544b9843ce4788f4271","1ff872cf8fe61bc3b83918b6c6933d42557b30bd8cdd4486c4d7e89c2237595a","270c49464f6022966d13a67fe4663a4651d4e96f57c0dc2a5f882776558e48ad","029f206e6fffb4910c75f8ab0fc9052775c92d041145b4db9ab62f121f4d33fc","70d570093678fc5c45ce9fe2af8268a150841e7726d2190c694a831c50552e10","32487fa32b7e740114941b53010a9f2955ecb6cda39d763458a00cb04d5babd1","f17a5b08a7f94a2212d5849ff877ddc8fe65abcc98960996a289e8314924adb3","3d7013d169f8f5c0f848579f40abd039c8e7a9a4941252ba60a7c7f45fc7b2a7","b6d4634c6d88dd3004d2b7117ec53c3e5257adc8f83680c65ea1863a46dc8937","2cf44f0a2703b9d397aebba84fc2f1ebb4de66a67bcaf4bad22f711f8e420939","69fece87ddc2667125ae3155e171d9ace12b7edfaec35545eb377af11a5cef82","105eaceaa199212dcecf8bc5112fbd2676474330a6e64750dac48743957d4de9","c86d560760e05e20bfcabe7dbd23f84e1f9c05d2fa7fe966b3caddd29a8b78fb","5bd4398a4cd1dabda445e7cbcf0d486b98dced817850a98153d8d5d56c4860e6","497997b2593358750b2d0fb52f3c0a7172c4dffade9196b55f1867799a99bb7f"]
Anchored: 2026-08-29
Public log entry: search.sigstore.dev, log index 2632385362 · entry 108e9186e8c5677a1c4b…
Expected log hash: 8e81bec440ba58560c58893bcb51aeb125fd0d03ca39799edc695d3f533e8f32 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":"v1787973390454","kind":"published-quote","locale":"de","page":"theme:smallpdf/price/de","quote":"Guter Preis für den Funktionsumfang","rating":5,"review_date":"2026-07-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (f61e30d941fc…), 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.