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.

“Pay a subscription to rotate a PDF page.”

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 2525430207

Proof data

Record hash (SHA-256)

62b1e33ac8ee6604e53cab56e666b54d7198ecc6041f0b4318ff1fceac4eae5c

Signature (Ed25519, base64)

85LOHp5p5oxWW27dGZ4qZ/9K0y7gLcc7+gD5ZOAVp/6U4GhE90fO0wAiVpNq2iQbg4LFX9PfVAvjS6sYq03nDQ==

Merkle root

689da4f5bb049dceb797a1ebd18ec1f343afdc6a2eec17587eed167cc7c21a02

Merkle path

["62b048c6cee7c00a126428eefad1e17b3d1be451f4b1c45e57f65f261d8e9094","f35b6dd080b175d7c2d96674c1eaac63137c889f498a63ab2a5b8a5e13a7a397","c815323a664c60a93311e619f187a75cb466e276093ee02c7f232a770acee495","3c66721a9ba57a15301e65cc10d6b3f0729cd6617b31598d167eecbe7e519338","c2fa241df47a9ba55fcf47d5f6407dfb5cbb80acc7da8bb813b24b96db51d44a","3faf1b882a6c5068c854cbf9b6f74e26e31884ece50b3066d40e54a14813cb06","a909a059f0b0ceeed77caeaf5b256ff21c80d784bb7a8e8e3d70ec6853b96fb8","30a05e1ab4df92ef2b67c652b04ecd4ec66caf038469f469da8ac5a20ad6b7b8","ba53e921e2415387c02a18630c95f551b63643181b88fb47f2fdc91ea2c1adbc","66a41e7208a479d7eb7abc043b0f3944eddfeccbea812eb1fe65d117fab68c5d","0dd94d8d58916b3b207317bd4d3dabfd8d1dc6babf8169aa82e30e0ae6f48a49","e52807ba49278ac85cc42db949aa1c46fa740ef5b2997288deca3c708d952970","f128e8f5929cc7f54846ed139d52e3f2557063fdbc2de3535e57d991ad26ea3b","f868ce2794bd46d50ad026b012c7d42f09aeedca360fe9248ca59ded31015a27","2492d624e607c70378839deb70fe4bc4c618faa9a11f2be7d0e42b467b07d755"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2525430207 · entry 108e9186e8c5677abb21…

Expected log hash

68e6afcd6c232c11ffffa818a4cc0c5faf1a86dd24e2ab2a7811fa1f4f43bec8 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":"v1787196781193","kind":"published-quote","locale":"en","page":"theme:xodo/price/en","quote":"Pay a subscription to rotate a PDF page.","rating":1,"review_date":"2026-07-28","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (689da4f5bb04…), 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.