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.

“Even after a written request to delete personal data in accordance with Art. 17 GDPR and the withdrawal of all consent, there is no transparent or prompt cleanup.”
Google Play · 1/5 · 2026-08-30

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 2907673729

Proof data

Record hash (SHA-256): 3a494b908137e78cc4501edbb5b5bcc2b8392f9cf74d8792cc756b552de565c6
Signature (Ed25519, base64): iNRVfr5I9/7DH2NnfGE99negp/SOC0RhUIdK7T/iGxQXdLK5i2TQpxMJKukb6eGyWzeFWr3et669GPNp/J4NCQ==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["3a4951d0213ee7973648f54f754443e0107d636cc45ed7a08e44a6455db9d6bd","af6c0841317a9de0bf3f12e1bcb6c7b48d822767fd0a3ea4bc28ff11d2554053","d325388154f74b7185122ad705097ee2cff9c0bde921a3704df802de3a15e671","efb38af5eedc75d2770558d04160cdba5b7481493416f3082cf43c7716f28ee2","d4782c0df4581e6ac3774809fdc259e39b2ab4be47fb47674832db2b23e3b5fb","5749c921ccdc2d3d138645e2d915a2cf6b5e915665db765e0958a696cba6e7e6","c3a1114511396a3fe51e54ac3581a2e37dfbd1aabd06996bbc244a669a0c75e1","2b3af7b99cb914d27dec18a1ccc47ed7d2ff3a3cf72852816d2100ba70774c26","d3a9322638666c08073907a7dd1e3b9ad7edcaccf8a1df9fc394e665d3644e94","eeef5d70876db2f8c2d6802397dcfc5cf15ba77d54eee4acd45e348bb09680e0","84f38e58aa9ec2492d7a36a19128adb6d0495321f292dd44bdf4301a0db4c55e","94e922a61249c96280c1295d8745a971a94793a7c2dd589ff7c2b71a4d71c1e6","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/service/en","quote":"Even after a written request to delete personal data in accordance with Art. 17 GDPR and the withdrawal of all consent, there is no transparent or prompt cleanup.","rating":1,"review_date":"2026-08-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.