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 has helped me a lot with my studies”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
92bb0e4f98b3764584a77c1a86d138d59ef002d73ec216b3682422a4cd4109fd
Signature (Ed25519, base64)
QvaJTOsdtF2sd4V98jGFmqHmrzIaiOsl0AAoz7rDLxesnNJwDQQlV1luxhFK+SVylDgrV36AkjfnRFpD1kAZBA==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["92be7e0f114c0e234bef4974e8459d8fafb1ee76d32cfed0d8e974a8988f0b86","f08527c44e8ce5f870cb0f2dccdeb266de4e7032527fb7e6f1359bba169b80be","9090710dfef42705192e0cf383b43dd1a286604db6ad6487ac43c709e1f425c6","799eb742ba54440a86f6c5a9ddf8f2011132a4258fef70e9efc8735adb73fefe","300723445277b02a6b60cb300ecf0164f04cd8b5f5461ada4d73eeec91b60fcb","04229a089d14ce64eab78a78003048c4422c489df53d19e8f5ae7a3ebefcde36","84eba903bba09b1a7bff9e1ecf54adb2daa646ecffd65424a737c31e7007383d","a1b7fffdc3cf3356539c2067e82cb4e45da273e0f4ef8f5ff1046ecb47b78ab1","d6b238952f2807d230b79a09266b682ef788a5c7e3a1a7223a8c6c6a23f736de","ff1ac9526ebfebfae03ffcd9a5d8cdd3e896f2f805d0aa8b855b0f87c72e07cd","808361c2cc11d1d62da97f81cb8537cc3a8a9e7c2b553285d63cecf18a95be4f","81ae0d98613af401743ec4987802323d53d8fda24ce374cdf2d369d04f6e8e3d","b5d03b72964f911025dbd61c2eea673598b47768b7619e9a279966a44a138147","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored
2026-09-21
Public log entry
search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash
d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"it has helped me a lot with my studies","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

  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 (e299bf38720a…), 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.