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.

“No letters are displayed in the text field.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
21ec026348160bca57c4f58fef204380a1ae0a53f6975bea7533626523845fb4
Signature (Ed25519, base64)
p2Ftb/9sAFcOm0US/qNC+pFqpshVOnKMzGMJQq1GNzRCP+daXpLAicb8ObOHoxnlNAwrsBEkKnLpwqc2KZdOBw==
Merkle root
3286418fc06d25de584969d1d1d5f4b079918bf6b5a5178364cae8b78bb351b2
Merkle path
["21e135bd4bb0f435bdd71792c7772972417dc9cabbdc04c6499d161f9d43f90e","de15d214031a844496e6593ea0c3a09f64d7cf1fe6405a262b0cb60508498ec0","4563c103d2dfb05df71347d619ab83840797c1c0df00446cd6f23c6d5290f66f","86db06b4f741d4f1f774d60d11523ef5565254786d3931a032900a0bd053fb7d","9a11ec6f70a2416b24719d63d2c1e129cb302e74178532bdbb6a812a011be993","5dccdef9616dac4278d48b4397ccde257622f7c313f1bdb290eee8f873bc0267","ad7d0269c2375ff077cfbc50011054b1054e15c84a401adfd5459ca7daa8691b","807a65fb2674c65a1ead56fadc5cf974908ded273995ab8fc1a393c2ce44e4f6","bb203cd02910d39539e15265dfb167b59ca149f26a6cb7fcf3d3eb34de2fae19","d604c90513eb44b132511e8136d1a40d3d0e20cf1ac8827a375f14753e345e92","1d1100be7a34c450ffa8104880455cbdab68faab3fcf0b9a1902eeaa174e1fc3","49e05cfef927266c6a609e22c205c5fdf538ab222e94c5e3282700418f88dfb5","d9800b1b87d047478eeb89f8a1dda19593d3b273c40fa6d591a1b944763f5e83","b4d8773b8032d1dec9dc6fa4ba1d52baf4d9efac6a7cb542ab0617b855dc5284"]
Anchored
2026-10-15
Public log entry
search.sigstore.dev, log index 3258071454 · entry 108e9186e8c5677ae2ee…
Expected log hash
f9026b3bdc4a2e986a01140b2370b0ce9ec3e7c9353055dd7c9909c6a9941809 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":"v1792030101458","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"No letters are displayed in the text field.","rating":1,"review_date":"2026-09-13","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 (3286418fc06d…), 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.