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.

“maximum zoom in pdf compared to other app”
Google Play · 5/5 · 2026-04-23

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 2514541190

Proof data

Record hash (SHA-256): 976bc1160e502da1f5711c29926dfa7d7ca1b059d53e5ffe5f234bb9decc532a
Signature (Ed25519, base64): Uo88DuPrTOJdE1M2pchjPP/LEbfrmyXs5dQzX5/pw49wbcKKu4uSljYknoe6W+3inOfrsh842807puHGujQ8DQ==
Merkle root: 6ddadcc7cc1bb0679f63a30d8a28a2a72e039950945f2d7276487dd5b703ff7b
Merkle path: ["976c409a17f81171baa0394ec52eeb2869e6c14475d0cdefa876793d393b5024","f810a6ccd0b24d2dcf43a78ba3f82dd4ced6814c606e014ef1ba0066a65f91ff","61298c53c69aea6228f2572417c2de050948c2c02407dc69061c4797bd3ba0e6","a35599e15f769b29e981f0c01bba7cf3e58f70e34359f9154412a0cb8daaa42e","d29f7a790aed0fbbcf90f339e6cfcb67f572d6d4fb2ec521a5dcf73d81c2ac7e","eabc38984425f47bb1313f15ba7af12457eb1faa62c0b709cca4e5c19bb4970b","6026089488b1344b4a4bd5d9d7c34c220b84e1a308f0a1920a04dda9422c12a0","60199ca04ca0d4d76a83a88f787f3f7ffff129a935158dab62c7993faeabb85e","cd330b95ea2a1697959b598e8733e8de328f87ef03d7b1ccdd72d423c4125f4e","ac29e3eb127d613b76696b6bd05395872f2ea6dba3a99e8a246323fa4a860a8b","f4a0ceeaeae66e974dc27baa912191626bd9391fcada3d0c7e6f1cba07e751ab","ffd6616cb618306ca4aa3583545f84b7fa29c181a907b1b33af7b376cf166c81","a61e5ae2f76512796ca950dda053f4b6c996534d5562fbcfdfb9edf203a86900","6c80934204cf6e9e7c67e4289ed571ca8ef594df18a56fa355d65497266fba72","052ac7d24dfc9659210f2718e5c7e6b2477f3dc364546bd6ed2bd5df9d14d7b0"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514541190 · entry 108e9186e8c5677acb65…
Expected log hash: adca5adcd6d3235cf084bc9b408d3e4d7742d07347957346ff2629f37429bf20 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":"v1787130614827","kind":"published-quote","locale":"en","page":"theme:xodo/fit/en","quote":"maximum zoom in pdf compared to other app","rating":5,"review_date":"2026-04-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (6ddadcc7cc1b…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.