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 3163352270

Proof data

Record hash (SHA-256)

1d25b9cde72dc9ed9279ada87c846e23eee41d9b3b7c3ed1423f8495c97e34f8

Signature (Ed25519, base64)

DK3MOKWIBZaW4keMJ6q9mf4C3RLFFyDip+5DtPrE2gYGlNnpJVSAbCXaZ1rxMGI0nFs3CYnDlmdG/xR7PxDXAQ==

Merkle root

784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8

Merkle path

["1d2504e84f715540a20b3363dda0f4d85ce9c17dc4dfbb88b0dd712298421c4f","394ec4dc969446fd3fb73f85d5c3f037eca129cb374fcc1dcfeaacad2f52c5ce","20eace184c386d096c58cf33bd9f34929b00c345fb905593b538be5b1e0a757c","b5c8c9e4c570f0503b79a4bea1ebf9a645fc43edf5404c148bd75974b6bfad84","ed94f9eac3b25b86aec4b8b861f0f508b212feae319c2b29525fbbed82ddb632","0719a5f6989f6b2c0e7d04237806973564bb47e193e42b3b9eb409e0e4bc2570","de84f0d78c3e031da9d1afa888da12b920c5c3c1f05ba7e6b51cca44dbb135ce","9b9c22315216df00f159fd3f4c5cb6729df2c06f964cb3a23bfeed2ac003833b","5b0df80b4ac26509cec57b85d5f601b2757199437ac5c1aa696d4761b85773f4","47487eb7c1405190daf603c40b580d820c0e2d811a1e21608efd8ddf2d5a31bc","c9529055fe5b6b0f37b66764f65f279ec072fa3a305dfea6da010f70d30ab502","438fc2375d6ac60843ffaeba15cd4e6719ab0c0a256a5e1e4fb5964975c2e131","b2e795b1a28ca13f7663ed8f62127f0cc32efbf6296671f3d7800b760642c1e7","7c65cdc9460755a327943aea2ce97e2f5c6080d778d9434fe2dafbfbc1e3b04c","5fa09e3847513934bffaf71960ac2a100e20422698698ab1e19a4fe8ac133514"]

Anchored

2026-10-09

Public log entry

search.sigstore.dev, log index 3163352270 · entry 108e9186e8c5677ad020…

Expected log hash

a3ae0badac804d14d314abd0e71726d06a96c43a3840dc1d63acded9268c461e 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":"v1791543790412","kind":"published-quote","locale":"en","page":"brand:xodo","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 (784ff8fc3c42…), 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.