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.

“Kaum Werbung”
Google Play · 5/5 · 2026-09-20

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 3220996539

Proof data

Record hash (SHA-256): 352e3b61b3d7f68f4310b2e38fb9c59d9c69cf1c72acb364adfa9fb3327cd113
Signature (Ed25519, base64): vXYksT9mNYuke3tv9mUDoWu6eu5t4a1/osxDg4mgYSiFC/ZAtzRDkmSoOUx476wrXysZQqHbTSOY8fOJ65LPCQ==
Merkle root: 1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22
Merkle path: ["352e877062a27f7fb7c49856054cbde8cb4e5fafef7f1f60066d23fb5a53924e","fb38aef55e8cf80efb6eb73fe3b99014d0c833949b550c39f6693d3b2b3dc1ac","0de89ba04ad7f68745adbbf4a84ad7f8a902974ceba92d27396d640e1d587fef","0199396b2c6510c6962114faf1d90dfb58b31c3e22e64e9301367d8a6f0c4c72","1cb38ce1fd59c43b57f7a634b77707726591f48a32d48f7be8e52a4d58cb28c2","69f8874348dd5cf042d05d1ae7916ed0d9b0df1ccb0bc43e71499f37cf9f89c5","3894020839396d11fea85ebb31bc62f244b337d96f8c859de9e3d69674fdbf50","eba30ea3350f16126721d5c08f5312ed45fe35e297d54b2b6df05fdc08c8afd4","49bf26d2b4a0c2cdf4e9f34fca774d3a105d67f038a7799fa4281de89c103b71","8afe0b1d37f215eed61ff4b4fd3d3bbef8b7e3e98457bb72a9b8aa85fa1aa47c","8501213cff22bdd65042463ffc599eb00a94c6bbc397e02df36434f1645a4b73","02a91e84dd419fb91142eb41d22148d6364f823a8ddb534904911b59b684dde2","bd64ca269edabfbd30efee623435236838862399942a0d08ad142d3df41d1142","8547750c311d384cbb1a945300d6b6fb4f4bd2b78af7177366b3baa4b4c1e724"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220996539 · entry 108e9186e8c5677add5d…
Expected log hash: 00694de1434e648cba57bf07fb439ed90ba501083441667555bcf619bf5edce8 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":"v1791779426071","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Kaum Werbung","rating":5,"review_date":"2026-09-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","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 (1b0b408c7cf6…), 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.