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.

“very useful app for study”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
17900da55132095f842d67f674715f16690814970cf8e54e95af29a5c49f8abd
Signature (Ed25519, base64)
AbZ/XDQ/Aws12heS2oJx/FeYHvzrrkXkX7D9ZJP491B6iJJ4y4Kdfy8vKww/0hVAJBFIPAz5LRm/MBZ+5jDWCg==
Merkle root
7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5
Merkle path
["1793de4a9adc85f49da770676634fa3fb41577d97f5d6a31300e4441d469665f","61b8f3d0fe3fa26c6befd60427dddb3f252a8bb97bb1fd5659b344585f68dc54","0c3aae8ab3f5e8877d63b45e31965540b9ab2da72705c7cadc0f26ee2596cbf9","9a994bf1d4da6de0636df7f0bf5c7fe0adafa95b214860e9670cbc65d70c4ab6","00ab8767429e7bdf44337970ed015fb045ecae2416fb5a4c9b3a808f5f16c96a","eb05b0ab4c332c28bb10f21cd181efa7e6ce30dde5deb16e920b420a04ff43f6","bcab5aa4a7ff9d5cf2e057c11cb52dacaf96152a7b4a1636a42ae596e48ddace","c03b3ea971473bfcfddc0670053d964e6b9285d2e6d84de82a237589f81efa66","2deec880ff96521e38174f4f21269df8102891be883c789efbe8814a93057966","7c9c3133631938e4ce776f1d317cf87a0d9d1848f4d6458b94016064a7228eb2","a63bc8de0119b3efaa7927ba592f57001910c515b6a44362d4adf6fe1a61f5cc","5b342c675b348d4a0b82d232b6f1d1714e25356f2be91df3e28c6411fce40f95","792fea8d115ac482e9fef70a7069e557f2efb1af634e94e47f08bdc3862e5a6a","acb249623400215550cc0881339acc244e91fde1fa89bf36124dd51a7bead968","76edfaff3d5907039be8c493f114c2f6ba10fbab7705dc7ab77a269ec79893bc"]
Anchored
2026-10-08
Public log entry
search.sigstore.dev, log index 3140627354 · entry 108e9186e8c5677acc98…
Expected log hash
82c9bd063e624267c60865e2416c3d714724e2c3b18c4773424cdf17232dd6f1 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":"v1791432333296","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"very useful app for study","rating":5,"review_date":"2026-07-26","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 (7e5597bd3c16…), 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.