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.

“And it is worth paying for.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
297733ebe752a66dc1f400ba9f3c9680dc38daaa3a72bc90e30c1f3f56f1ec74
Signature (Ed25519, base64)
FHe0glTVlA6W6NpU6Mnm2X2i/dVmgvhJBxF9ygB6KOC40s9JmvtWFzgUyOb/X2dboo9f/0icZ20XZiuRjiFqBA==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["2976864e3c40e10955bfe49c9245cf2ae6e9b85329de51141e129e2617a55669","8807fa244121f65cf55f84b509cf6bd9f31e4ea5727dbacc6b286293d2174f2b","d5b389a7cb6a7e42c0dde9abe59e85a5a91775c761efc886884e4fe61523518d","f454c0b68d486d9c5f34eca0a1a4744111e789137d67dc3abc027b4c736a105a","c462ddb4e4daafdc6defb26674aa661cf1427f678842d360914adb3ea7e08aaa","e86121fa29b05157354b3ac47aca0df525e3917131c0d9b6f89def5e4dbcc278","aad73e99561ae9b58f018a3f8e2ee539c0402790901b0d537ca1c43054f46ced","3fd2d487c09961380b736f68f12bbd0f6dcb9f5d6d5093fee72007a5f6dbc5ed","dccb9c8097558ce27ef0ceb4a97d6cd5108188243bc695ec9779855cd8003edd","b59563290d24f27f5783ba1f1d2c67f2b6029a306d91fc245ac05dacfc5e1382","ac9ba4f9e71cf6030de448197635a0abbbc254224985966574f80b2d390d8ce1","357edf8b8b42fe4c3b552e7406b8bc0a14039d1d547cc663e39b36a74f79f52b","b296372665f7c3838922f5e4d88b25d49437a77f990ac53d0dda027dc9495fe8","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
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":"theme:vaia/price/en","quote":"And it is worth paying for.","rating":5,"review_date":"2026-04-09","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.