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.

“Diese App ist wirklich klasse.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
9b482d8dbfba8861e5c0617d22a6f25302043a28aec62acee7841d5b880a73ba
Signature (Ed25519, base64)
CJO6VRYSwyFAy+HYKZENxmtQtguHiu42WghWhtaIrUCVMgFgJJnyGBFpf2WypSGnDH3cIcMoS/2Tk3QLjp3RBA==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["9b498fc1bd5bb85d657b9fc625d298e0131d66bdbf353c795d1785f033471859","640581fc934031d64d148f26b697edea910dc0930927a91360840b132fb1ea0d","0248f05d5a07eab94de5828c1b6bb52ca0e7db7f7c735106e74d7fee6d0eb315","b706fe1cebaaa03175b7c0840abf511dda273611c518f30950ddb25dd949e6aa","577f97bd15dde9e9b40bb8edcd8a93469c006fe7555f5eb8998ec9e4a4a4ceee","5f134639ef43857933bdd2609fd40f2a689bb904d16525c9ada9d1ec513fdf68","75a25aac8a0c18b1ef0b6e741eb255255871051205bb648c99e0720fad73163d","84ca9992c863c1e361b022a872982525c76b798485494feb78768d9180972760","2877cb4b15e3d55db7de458f9708c1a904d8c481b33de53036d2b2454cb012ca","c739acd9b5af7952a302b572353d6cccca9fcdc523c42bd40237cfad9ebfea8e","6d2c471b82300715f66f5dbf8b523ac1e6edc072f3668c57fd7750412f90467f","81ae0d98613af401743ec4987802323d53d8fda24ce374cdf2d369d04f6e8e3d","b5d03b72964f911025dbd61c2eea673598b47768b7619e9a279966a44a138147","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
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":"de","page":"theme:vaia/fit/de","quote":"Diese App ist wirklich klasse.","rating":5,"review_date":"2026-05-08","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.