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 lets you understand everything at your own pace.”

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)

4879684c0da4dab1627d9d5e9e4fbdd3558ab7c0a6e7957156d6b5a9275c43f3

Signature (Ed25519, base64)

2r1RR+8a25VcLLnTqVK5yrW2nEr71GO3d7Euarx2H3Zao69aGDVXf5URiV5yarSrRsdAWCq/RMrOngEExIo/BQ==

Merkle root

cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e

Merkle path

["487991a1958040d28b63aa80a4ac7d6c517c3dfbad288d99b9a6cba1b69530e7","cf240712300717fadaca57025467c723a1d046a34b58a962de91552d5012a064","7f234f10396adc622569c7bf18b900e060bf3f46cda90d6fe2e6364e6f49ce62","a42db63493cbe28c79b32006e352d70e2b855a048eb34643b31ceaa27fe5c7ba","9ba2a2e3bdfaf59e6fa1a56f01bd2039df2969f8e8c97777c131d5935c301e16","4ef12a61a17ca907a9831c05d828e5149f617627ef5a16ed5015d1faa9ddcacf","b0f652efe5770ca5da93f45241d88db5ffdc6147741f3d1c6a4cb00cb860b099","f5ecb0aa93e0ce3263b6fad01da0d8d2faad2675781ff94caf09efeaaa4fb0c6","878dd02d4b2152eff5b5381ecd684d56406b8cf05ba7ccc3e2c6f125a96ffe88","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 lets you understand everything at your own pace.","rating":5,"review_date":"2026-07-25","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.