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.

“Spotify ist außergewöhnlich, besonders in der kostenpflichtigen Version.”
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 3258201873

Proof data

Record hash (SHA-256): 218f2a3e3ad5b6a08adf29fe6527396cec6c6773389ef70df966c23827298054
Signature (Ed25519, base64): +ekzDmdmccqS/StdlvqiYWrbOv5iAlaNo1akC8fEkLBYzhQ1NnnQMaKtBHaRCnaGwonsdgsEYKzXusjL77w6CA==
Merkle root: 07e2d0de1409df9008c16531abbe2f8515ebe8e55b87a042e18a21958771618d
Merkle path: ["2196e7f69b70304141c68340a459aebfe720dbc4d1e01d93ef30a11911d33056","846833adc739296ebc23632c7c473fde75d9b45893fe6115dba78ff851840320","b2fe4077ec69b1decfe3efb593fa043881c904a34dec0313551ae35ee6a97305","730dbf067342999bda6aa592311c6f7ac45f7d2f583e35fdda37d8345b823617","5783f7565215a95f4684adc2ef0fcd064cdf51589a5732bcbc570d5573b626f0","bcb7e29cb34b71d1ec0b760c4521bf142dde0e5bc700f5191fa852ba9f28ccdb","9add46499412498f2aba74445fb13db899b0501c12ca0ab3d723936f497a8342","1feba76a6be0821cde7829b5c4d479e095ac5dfbdf7918d183a99291adab4d31","17e08eb14378d8fd89eeb09456264180e60972d0294b4cdfa99a3dd740ba9b59","3e3d31a8fbc70b3e5308f161ca99d72114efba855a339fc817fd91b8d85dda5c","46f7d1965c89f3f4b2a7c7988db8c93c0be2fb6e6b7dcaed9bed486cdf5cf862","9a75e3f6936d56126d6fdf7afc9a8945cddff81ecabadfb2fe720f30ae044194","48799695a25196e19e6c0bfac80015199da758df0acb5108e4c517a5d6bc016d","fd7778befb9f979134b4d8a1dfa78827e64c761abd83cab9d5ecd5bc01d8ea14"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258201873 · entry 108e9186e8c5677ab04f…
Expected log hash: 205b794967d70c4ec2534ff3766e47506acf44c7c68740049459394876120dfa 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":"v1792030899870","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Spotify ist außergewöhnlich, besonders in der kostenpflichtigen Version.","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 (07e2d0de1409…), 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.