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's free and unlimited”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
f7fd56e085e674e05ae6dc4ccd9ee4b8a52543a141aa79c298e70621ccbf5292
Signature (Ed25519, base64)
XK9XjwBAL7QiWWzurz7SmdRs9ONkveGR5FHMS+DYa+CIjrHwiWMca7PPcRc1c5xrfl2V+8/TalRTwo2DiFVkCA==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["f7fcdbfcd3cab4528211683830a90cb910cdedea66208b049c9cebc51db907c3","9ce215725575c263935e23ff53f22318be6d4f1ca1802156dd5a2bb131ec3b4d","e6ec9f2b717993d4ccb76155ab28c45b0584727e09f0920617c27433bf15a4a6","1cb84d2ba37e46afe6b0779f66efb978310959a2995aad455ec56357ef01390c","43fd17d4cd81c61a6d86c099860eb4fec3ca7de9276371ae403b728c38b99280","06246c1a9967385f79ba5a8b7252d6d91db4cda6bc21ec82d3d0c2e56ccb606b","0e0df693f36fdda9fd6a181c1884157fefb293b3a698dfc1ef01809338509b3e","fe55fd9d252f89d901285997a2e8a2241e0620ad7c33463bc28f91baad80e2af","bd32e511be05756fb012a40c67cd1716cfdff1134d00415aa8bc41d5125d6095","d32c39bad5dce323e576c283506b6fb7150c1c5a45bafb8288504a1620175dbf","58fcebd1d3d07f3a6ba5f31279f2ecf014cdac37bfe65872be1ec5d6a456940d","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored
2026-09-22
Public log entry
search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash
bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/price/en","quote":"it's free and unlimited","rating":5,"review_date":"2026-08-28","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 (b9a08f9d6d76…), 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.