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.

“Plus it's free, I highly recommend it.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
f56e52fe08d6507109749f46a6b2abfe5e44c155994261c17472f2169768e688
Signature (Ed25519, base64)
V2RHtGsHlmmqTJTKoqe9ib064GyerDKUnuF+RFrK32N497deCWREzeqQ5hqk4lQYVUrzltQ7c5RPrV3N4jMEAg==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["f56d4579f68332f7be58b8e8295788e074be46ffb7667edf17817ffb5eabecd4","b46f78c4f6811801ff1956eb1636f6be6818bbb01223c5f7d2369d39402df71d","483cca8d674a0dc68c2d23a49abf98490923dd76ad7698934a1c49650eda8207","f70f5167b994439a94c11864803582eddb339f9f9384486c0af03423cbb61303","51eaffc081dad82247d96546651752e99df9d6f5a54a10497e025b29441eca7b","0d59a50d3f43bb0191e53e6e2d055f47f953dc8d30a2a16d5cbd1ec4ae435bdb","aacefbe10ccbd060658fcdb87cf98b84d48683a4d238e7fc85873f749bee21c4","44450208a485234208e0a6f7331cd77a6abdc432b8c3b1527396b4afc0ac1373","f887f5679935604f9dd74fdb4f9087842c6a4234be0d906b741eb0ba8c990c41","a52e1c5235962042ecdf6bbef0d4db003a996786fa4b692948dfb4ac38e552ed","a3cd6a309f10748c6992d7d249a79b7e2e2669fa48a49dd673039acab527d8fa","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","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":"Plus it's free, I highly recommend it.","rating":4,"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.