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.

“Nevertheless, I was charged €89.99.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
6269caf3036dde68f97535625705a34bbc168c812a79aa81d0d625ec0f1404c5
Signature (Ed25519, base64)
iDteCXo+PHEtOwOcmuRgyvVi/KkIKx0rwsrXFFlEe3keYalsauyuU+dwH6MQd4jxmJgsE8oCz2bghwbj/p8JAw==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["62696ad9033c978f62a51c42cc3117ce49f023201d4a6344c714efafbdbc14e5","c842d27cac864c614b82e8e82a77191d64ee5b2a2e68eb36334abd43e4c3dce0","2f5d9d7e617733bfd5538036b27d3346d0b9b0d022af17fa05a598690cad1cfc","3d8b40fd70e5c87c2354f8c87095540d023efd8d4b7ebd81978b43f39b2e0d34","e5971411743c9611c03845e70b6af510bb8a47d6630a00311b6b809c851c5131","10ec37db0b50180c737e9414d9825465e5edfb5a3e05c091bb00428d81ae21d0","a3347a74a51fb4ef9c3baa78688435f450c4f3231ccbbcedcb8812e635850f0a","b23091a4effe76a9639ff59e3e6c29f26ea7feb23a471e412f8f2196fc61c4bc","a209b22a20a3e6fcbc21220883267285f88db93145bb13520a5ffe5cef5d8007","b46cdd3eb502ea8d701c296271c408a8575a2b16828af47f917816215f47d9c5","17971a4c5f04b7879efb1439cdb9cfeb95d5979aa2126db67295ad88a283fb0b","f66e3f0908cccdfd396cb0e5dcc96f2570e4fe1056c45eec7a7025dce074a563","ac995c9ae640659c6b258d62d0cad1933912ca122fd33d27f90560dfd3199a84","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
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":"en","page":"theme:vaia/billing/en","quote":"Nevertheless, I was charged €89.99.","rating":1,"review_date":"2026-02-11","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.