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.

“Mir wurde mein Premium-Abonnement ZWEIMAL berechnet.”

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)

3cfc823c9552c487360418e434c67925a9fbc8fb2880e2260b97d54dc476e7e0

Signature (Ed25519, base64)

svZNbH0daLiKBXX/uPPyxB3+uO97IYNKf2ePKf6zcN4jolYlLnYGLb0T3Fnx6/UBm8SyqQDoUVKRbYZ/nUF8Bw==

Merkle root

1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22

Merkle path

["3cfdcf5cba07d0ec7c2cb7da43ce293ac536f3aacb9171fdb08d0fb261bb8944","88f28cf346d02885da6e632171a037611b6639e451235df54bfa661fa66250a1","94ba7ea9833098dc26837220cca92f4f62ddc94fec6eca20c0c0127d1df864c8","78629540a4b02424873dfa9a4dca145e3ef8165e5f1b5b6b5fa56a8d39e49e6e","248644a21da8c69e6acea83e454a9124a7ec161b991af996e46cec08232f36c6","f6255ef0406abb229e303e58961a6fc937343ada153f59f0c5e1330452d06425","8b5262934e4e4bbfa28205c6e9713030409823522b55e05ec279035e6e7bb784","4afa49d00d4df602b0af55b44db2f7440e89138dce2d1edecaa47a0db317d1d5","1adc30224ef6dacd45bace6df7f37b4a2018e1d2840048e8093ea2f1a4338108","277f36678228d57750984f6c9e6904f1a9988773727ef3d6eb5473cf7f4c45ed","2325b204cb902d18f6de3066c2e32c0b1ef80713e8508931f526dd37f3293ba4","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":"Mir wurde mein Premium-Abonnement ZWEIMAL berechnet.","rating":1,"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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.