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.

“there's no option to keep them as is”
Google Play · 2/5 · 2025-10-06

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): 53a8be6640c1e02ef107c2fa97e313328a0e9b41344b46915259ca6493ab94b6
Signature (Ed25519, base64): Hb79SQfIa5m40S8jBHqSCjWHbV00eW6GGNBoyfM5D4a3wXMBnJARw7lFRzs7OdvQwnaAEQKy3c6/8g7+nr6IBQ==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["53a5377e94fd3e5c952f31a9e74a437f71ba9fc8dfa3c7acd96e8bc1b8d14429","53cf6d5cf29a84c5962733366d542910e18f354ba4a227f092f1e90feced178a","ac7674cac0ce1c1c593da44ee62e17d94aa8f0053ddb3d64b45939870f92f088","29d5464e6a1508715998f39f53f245a83a867882c0ca81d9701c0a971dacc7bb","6f09b6ffa33856c41632655f04dcffee2305053326e89258618c22a29995a5a6","ce71fcdd54ca1c6b73091ec9b0989b538fb2d471e2bcb20ac66bed5d82942710","4660d308aaac31b7a104139ac3f6d33948774900b983c7362b2d963ab92beed1","d24a1a98024e24cd917f9bb1bbec69dbd767918fe9d90466a0a10990052d62d7","0618a322ce6b079e6b3825feef5e95a758d6a67a2737a764f76491f483c37ad2","ad0aae11f52bbbb06ea51de50925d251a694c98865b17a3619de68e30bfbd477","87d389c83fd89e992a96d0b9792dec0eff9c6544ae6310a697648d3aba29323d","0197d988959ac12f7d8946ff2581c88b7ba9a4305193828cca53fbbb9832a064","bcc0d977b8ab2060a87584efe5d0f5545e840726716d3f02c248db108122259f","6c299608515c69a03540be35865f96ca4932f3e0403f8f39fb0e1c2e2aedffb4","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/fit/en","quote":"there's no option to keep them as is","rating":2,"review_date":"2025-10-06","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.