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.

“The app is very good”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
304074126baafa89fe55f7844bf7b2ac8baa50334807f410162a842f0fc005e6
Signature (Ed25519, base64)
SD/RpER3HNiqvjWWEJMS9iovZcPf2IcuCaiOYMX+r8p1oUs98B75znDtJGQHWIW8912QBv91RmUPQNHRiarDBQ==
Merkle root
6953a5ba9bd00082fa1986982a5979aa7ad5b4654ec368f8d247f13243e4e4b8
Merkle path
["303962622fc017bfd617173e83aeb8d97a4fa13dca6b43514d0c348aed932518","e5a8b1a0daae045d7df67b731b2eb76b058fcf351581dc6ddd8ef3250ca3e736","612e4f963af7e22b214a9a7232929be4d9f9c14c9644389858a14354847661e9","19d570994ef73ae2ebd6ad0427daff990d4ebcc41c36fda82ae999d252fcd0cc","f350f9bbe258db41247681c742bcd483ac95835077928bbf08013c9ff10baa4a","1245b69519cffceab1b50995f7617c2b3b7916019fb0504edae8e7691336c140","a5860363be4cd705a281bc8435e126520e275a02fdd4e2455e1cfdfa45ee0992","7a838e9d279db228b3265aa237438c4a65d61b0e23ec1714d42917c1d4161a2b","cc99f89667b35696d8c5a445f7f313fb3de9faa62f191cc72dc2fabe87388bc5","0ab72d00f9f17e93fafe5fb0e5ce2526d0dc199af82bef86269af0a9454168a2","72c3e38739481bd0a6b962b9809fc41fdc415b4ea8f89001926f0ebf61efd9d2","d42dc1b37546fc67d932c54c8efa2ed4184ceb43d115311d414f7b177c48c420","3d6624c631c3f201b337a52bc4f9494c99366c0aa74b4db152cef1b6807b4800","98a14e6f55278d0c3f64d31e6bb09545a033fdb7dd6455363be23426eb85b044"]
Anchored
2026-10-16
Public log entry
search.sigstore.dev, log index 3273053873 · entry 108e9186e8c5677adb5c…
Expected log hash
8e660c0f9c2f4acb2461077e20036379bc945573437a296969373758a8dbffb8 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":"v1792120102008","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"The app is very good","rating":4,"review_date":"2026-04-08","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 (6953a5ba9bd0…), 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.