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.

“Excellent application and works efficiently”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
4c3dc740e9a843b63b3f39f274c9a144753cf2c37583999fb7db13ce9b1d8f39
Signature (Ed25519, base64)
fA5XzvYKDbRtzNdF6YDuhSpFQe2YUYjQYgl78irKpj1Qt6Wyg6a4YxZO9Kk/mWOA7iF81NJusT41f4u5ADFbAw==
Merkle root
0b0c0499033d3f9b3953d31e6c838f88f12988dba810dd4de44922e1b60fcdf6
Merkle path
["4c30f223a0f6ef6e033f1fc89e33162b5d9b35eac3f57c73f93e048c3b0f0235","8ff3b31ff7ece5b378105921c50f29ac163033dde8cd65f85a545b5ad8ed14f4","c65f18d94e2ea3f784d4bbdde30cd6630e3fe9a8c0c0fc470fb51bb6bb1e78e4","d8ca36f7ba478a8e3fc02650470470abaf31a6566d34b832a35f2df382c52395","fc469caf7e244614c1f2adbcb612dabb026fa5a25e329774c676e3cc7e7bd51e","fb4a14ad11feb1d44479d62368250986dda23e37d6c54e3afab7011531cd63c2","f668566d36af70c6692a4ea6f79e260b44005d7e80b9c679f8dbdadb8047187d","85979d1e1c387c4a1194eed18b36aec2cd46610258b5c277ddb70a7360904da9","a0116f4cbba15109da9d6e27e1112108603b3916c9b6aff2af2d0880cf3021b9","8369704f065cd92d83acadff530084cedc82ffc66761bdfb0773e404631137ec","7799f8c2e12ebebec2e803db59dc1771942abeef133b5e16abd4958aca8176b3","a2192486df88d4dc6da5dd9f9fe72a80fcb0210cda38213ab9466ef5ecabcb4f","fe7751fa4b9a0ad43fe0710628b6cb1b92e12eb8a60d9f17eb0c0764d693577a","8a05b9e19287b30c7fb54816a1fb848939f3f2c84b9825f19f342683d5db13aa"]
Anchored
2026-10-13
Public log entry
search.sigstore.dev, log index 3241084060 · entry 108e9186e8c5677a3e82…
Expected log hash
a291e2473f1a4510a666e020d4d424e463d55bf4677b91eb5a52e446e5ff1581 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":"v1791865115768","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"Excellent application and works efficiently","rating":4,"review_date":"2026-10-06","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 (0b0c0499033d…), 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.