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.

“Hilft sehr beim Auswendiglernen”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
3a566dc91c5b4ad37dbec94adbfbcb079359f6cc6754773603713270fa058f1a
Signature (Ed25519, base64)
yCJWQFBEvVgah5cn5EuINBbtOO3nr4czzxQ3gAV+Q/APrf4Sz5ycugRXhiviIVyf0lIF55wqyVzD58ve5TX8Ag==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["3a5341f74cfc89a37470579f861ffeec84a53401eea9e2410282c1c397dfda08","3bb3baaf27706f11f7d8a462e4843187fc0b80c1c5954432510fbe77954e8a18","ae5fe8fd87d9a1ef29303f4849927a3a01506cf08e895405e10658fec8e2b358","1b5f65278bbc4c068a73d46613491efc6a40dbda7415e3e6a1124309dc08a957","ee0ea228a5556573ffdae85cea2a48d25fba09a1be762e952a9ed25ccf03ec78","a5ca7e0cf9a7357c8eb1167bd3b1fdbefc808dbdc3dd98973e1623efa66a5a98","30adc46ffb55f41231af18559aa94df27fae432f23779b14f6567710e70251a0","2b3af7b99cb914d27dec18a1ccc47ed7d2ff3a3cf72852816d2100ba70774c26","d3a9322638666c08073907a7dd1e3b9ad7edcaccf8a1df9fc394e665d3644e94","eeef5d70876db2f8c2d6802397dcfc5cf15ba77d54eee4acd45e348bb09680e0","84f38e58aa9ec2492d7a36a19128adb6d0495321f292dd44bdf4301a0db4c55e","94e922a61249c96280c1295d8745a971a94793a7c2dd589ff7c2b71a4d71c1e6","17354708d69221dcc11d442a2ae8d1a8fd9ce3422f52e63a29a599e2bc987d3a","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
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":"de","page":"theme:vaia/quality/de","quote":"Hilft sehr beim Auswendiglernen","rating":5,"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 (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.