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.

“I have been using the app somewhat regularly for <3 years.”
Google Play · 5/5 · 2026-09-14

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 3178600936

Proof data

Record hash (SHA-256): 25d3afe6bfb560039478a589228506101dacc66576491ef56ca517eb1a04a47a
Signature (Ed25519, base64): 0yPqrwJV0FZ6SlNRCHLIFBP1UpAwkGAS20OgJUFmaTd+Q8EkLWoPslIuXAWLdTsB6rBAG2Zsnhd839lKG8HXDg==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["25d4cc839be18942bafaecb046948454fcddf4a2ce8ccf559159a2d964ef9a64","35057170e8345d0df904c7223b824d585960bae074304410ee3c449c654c6255","93b816153f41abeb636e81b4ae71d3a314a9853894a3ed5503fe4096575dca27","67ed66fab5a30f17eb94afc120da630122b99657a5eb49a4e7dc90884fc82684","84007a70ce81f32c41bd8a5d33e5cecf38a0764d196b0a80b8bb20d1788a7ad2","cf1866be6f154e8a7b5e6e2fae4e7aa359c6ac1a09042a9910dbd8053a78ca86","b30cd1ed8a70deeba3e08b84d7f5efd00b14e57922f50ae473673e72dc7fec11","6af81b8b3e6d73509698c071f1b5c9cc2295c9622184988b846a80c7d035778e","24a9a758a8341171b40beb8a70eb23059b16518dd33c23560a73a76c2b4d79aa","c32baae29025ebd8bbebd4d2913e8b15582d3ac308e6bc08000959705d0984a8","6c1510ff4366f01d9f3cf2782dde2248f86be32b568472e8b059185422448170","5a28204f9372278679ccf6b3ebe28cb3da342cbf292d2015dc590fde73763288","2671ebca141255a0c11a3bc51354d8cd008634f7e59a58a3f3f9dc756141bb9c","a445a39a48770a8fbc5d87a405ed660d401fa810eac6fbd1d284a96f8c7d5503","452f4fcbca19997a15e6a6869c50e026ff02cb90a6ef21da106ee0457e55941a"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178600936 · entry 108e9186e8c5677a6a91…
Expected log hash: f3dccf508afcb5e89d56dabc8c5aead85de215b1b896d057d463ea1c1bdb13a3 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":"v1791606586319","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I have been using the app somewhat regularly for <3 years.","rating":5,"review_date":"2026-09-14","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 (eee462924587…), 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.