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.

“it explains what you don't understand”
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 3199295725

Proof data

Record hash (SHA-256): 463f336f243301aecd0887b1336c81a7870e03d41888cb34d90c868444f8e39a
Signature (Ed25519, base64): UOIyhsmbSXd5KL3AMFAns1E7n2xIDDM4slRTzf3rBxj8KilJHHZjqnIxZxxAbreZuq3hNZQaJBTyejq6UXyQCQ==
Merkle root: cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e
Merkle path: ["4638f923d7a234604958f839fb3926cacacbab93b1ee64ca2241afadc1b0dc75","8c8440d7920ff3f808c3a948f1c533b3c7e537f57bb30f57e637b123009a5ba4","5a05bd51a14b48c1dc5236f395d2d3bd07cfef936916356eb794765732733035","9ac29d03784242c26ac0d4d6fe5ce048b1610800f8b6e1f48c7a6e9acb1d0952","f2a84ea803b4a647094c7e09229ef3781bb71eac507542f402fcea7983cf80ee","b44b7bd0762edc793155c7a7aa878085310db926a72bdd319f6dc17af784aa2f","7226409e57ee51d2eec2078189611c64577866288663084d1de619e471df6ac2","6d95fbd64153a6a051a6e6332ab26e5151504ed929d5a0c0c9682b57bdf59354","eaffd2278d3fad28bf514505d4221461a946d39d36de3bf6127ad0503b638a45","846ed1ffa0f79c7c883aae91486acd852b188223eea8dab6e949dde80d12b3f6","6399f176a566a664e6bc047e39a9201bc70b846aa40224bb4200ea3a20c50435","985e8226a3e0c2f6e4183d2b437a359f1bd9336267c62cdcc26c3031df5f08e9","d5c54f6be615dd1c8e7a065afc12e543325363bfb66a63065a4aa1d52a1dc406","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…
Expected log hash: 59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"it explains what you don't understand","rating":5,"review_date":"2026-09-16","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 (cb5472fa7b7f…), 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.