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.

“I wish there was a one-time payment option”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 3240367269

Proof data

Record hash (SHA-256)

2dda6353c3675f3f264dd888ae9e36f8a0a56f8bdf838b8850158da195f4f819

Signature (Ed25519, base64)

JYO+o6XEW67zm+UuyepJGx12R3NpubEsLIVXV+eev/t5Enve010EyZFTC2u89RSNxaqljErL9wuNkt8p0rWfAw==

Merkle root

1da6cf8d96c8876e66e82e9bea7529c76d7e25eda1c07550505caa1baa49c4d1

Merkle path

["2dcf6ade49a189f86f65eba0fc7d7cb8e3e3fe9f5c562a354fee0dd6cc0283d6","403112250187f482fd9c355a0121771f820b673edd3ea03e38330c5e9004cc0c","cea7ac615cb17c720f2a493aa7b9010d8cf02a7214c6372b6c9b262f5a8c5a5e","aed3e8ecb081f6748348d9175079081ce153cb8ca913665c4267142e806dddb5","6e0dc31b99695a3ca4156bd9553882db06824413ad9ab5ea1815ef23fdc57cb3","e71bb269a39869e3a80550bdb1682b1a39b0fb806c8317699a90dd08b665451e","951ae55cfea2ff2eb4702e1c75ee504025ffad95faedfc1f2cc603405c849119","554c889276e3061e6ba1f0d61fd79aa0632491c952c992cc298f269e8dd3efb0","2a9f893433218277be12ac3c955e93d2555ba9c4665579b9ca845d8b91b891f7","bcc857adf48bdb05637ea302ca88d368d089077bb4502806026ef4ba6b38f26a","dfc09c55fdd73fd9afc70e4a018b52e543445810cca0a8f4cc14655c40e09b22","994e6d7ea103100577c4cab0d6712d9ad97559bd32eecc5785d3b2bf668cc0eb","d0886e619546ab8e630cf9041b21d39a146861d5b7598b5044808c3537212a80","2d81003ff1cd2149e42eace973cb0f4cdd39b653f7b06a20804a1f1025023ebf"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240367269 · entry 108e9186e8c5677acf8a…

Expected log hash

f6397ecd2b8639a3c60345d0c567eb602411c7eb1bead248c760bae850816087 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":"v1791861381931","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I wish there was a one-time payment option","rating":4,"review_date":"2026-10-06","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 (1da6cf8d96c8…), 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.