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.

“Ich würde empfehlen, die Werbung zu reduzieren.”
Google Play · 5/5 · 2026-09-16

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 3198489507

Proof data

Record hash (SHA-256): 3675ad58de266268ccadf691210b1b77eeb7657e739346c1568be81c5df858f1
Signature (Ed25519, base64): kDwsW3jZ6qaIywWlJZpDzY5VatmfsMc4NBz1cN3mx9hkRsse1byavtkBTLVSPmtNnVMosrxCcUkGyC/ChSpoCQ==
Merkle root: 240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494
Merkle path: ["3672ca1d567c155307925159aba8d633dc33763e04e1c172276eab592f64581c","6e296f544a14cca351a0fdc5daeda863ea0b717cbc4e883180c744d80555fa90","24a4c0eff78e20f1ab0d4063b2cb2567e7d94285c1a476ff48b2d26daa031d3f","0838a98bf9e245f5cc03f4e6f5fb7ac3a578de6b7c4f777b099b6fcf5de493ef","c61dd9226c8b073d9ae734b7d5f5ca656c42d6ea3f7651e6cf70084063ba519b","510a23b4e1f4a5cc124dae1fca1dfbe9d4b2c3171d68930bdbb3b2602dab12b8","fd28fd0f06bae75647f3de2d451aac6460d63f47b4459767a90d0a01f239b44a","aa4717157765aebadd2ec4e21fb1363310e9d51ac772e1964210afec87b90515","914291e7df0a76c797c32f1f0bcf4cb92326da8b3dd1e5f1d080c06cd4be20f3","8d7afb0c5aa09e340550c95126e6503476bc6b438243dc7949273a1d13b08b91","d403f355aba4dd2db75e94889e9f1350403fb1a3c8e86c27b49f11976f903f3f","ec9ecaaf6ecd25e70da3b6283bf48b73edd2937bdffac512199306f1e5863dc7","7115b4e40dabe303dca48b39285385aef0729dc23733c818e0f3ca68286a3ee4","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…
Expected log hash: 50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:spotify","quote":"Ich würde empfehlen, die Werbung zu reduzieren.","rating":5,"review_date":"2026-09-16","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 (240cb9349179…), 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.