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 premium plan is fair”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
cb09499a1c9430e684208e5897c6187325e16ad9df1ab7a15e89bd80ccb4f8b2
Signature (Ed25519, base64)
zRroYk17kh+IwMcuKSxxlqjPHlEupGCo6163MwN8niLQFhEzh4MJjHV+31P+5L5i+GoAk/RE6ddMNg+pOq9ZBA==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["cb07fd41670e92557dbd72bbf2cabdf125ba37ec8709cda178690cc57c0611ff","39e96e002fd80837be0cf15679b32150856147e50a10895f798342157556272b","1cea7a9afc6a80d446342955173bb5c13ccdaba155c9847ab44f058881bf49bf","0d045c11aa9409cf4aeecf5d1ace2917b62d2a5effb561dfa23bf53df62b8c7f","605447364a57e5e762ce35d614fc33748704cf253a0ef844a4b5cc1f73854e18","c56a55a025eb150998e9bea735b4e2f9559f224782c225f0b4cb97904ea58e87","6a657a39f30c067df4eafdeec861e6fd928fb82d5bf6b436d8ad9ccb179cbee9","a90130d85ad25bbb8dd337b3716e9ba3b6e12e763ba2e53520c8c2fa270f7848","cdb8a258e1b80b3ea1d12753ce407e07e32c702d7fe7a909eea52e6d4f51c823","a42a21c77f0f0d8f54adcb950626a5c44276eef1210ab57b5a18ec668122bdf2","8401b8939dcfb94a48793e7552a885657c9d52892d88c0004505559f51cd6d5a","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","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":"the premium plan is fair","rating":5,"review_date":"2026-05-17","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.