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.

“this app is so powerful and easy to use”
Google Play · 5/5 · 2026-07-11

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 3140475820

Proof data

Record hash (SHA-256): 27817d595672752eb2c927e0699fbe12e57fd209d935f74211d4f4a565673124
Signature (Ed25519, base64): 5ZHo57wxUQRgjCOPJEBURqUFcsjR4UXyGwcWaT9z4J57eHbOhKK+Tjh67efYc+4FWgmANaub0uAyEI3PYvEgBQ==
Merkle root: 52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759
Merkle path: ["2780f2bf0602722070850032dc374329c69581d7fd5d1c49aa73494da01a1937","96e012e383e60be0b0f594d01e2dcf6a4c62329ed31cbf7ad2f61098bcd157b8","e0a185555638ad17f370e61c989ebb7bb069e4ddda309c5f9968fdb4f0ad97a1","7a90992c4427d071007bec044e85855df1711f4c3c5cb5c6277f85bfe0a25c41","2a234d36dbfea0cdb510929d6cef749efe05390b4d9b56fbaaf06ae784094494","5a385e655f250ef07dbd56db1e719c9d36d41d784dc457e32746a8d786925fa4","9a820bcfa22411d904c72e97226cf343ea5756086781c5c062c10eb4ff2727ff","a7790cf6571532dfa560e57e202aeffdaaafc62fbc140d9d69bb8ea637c96d2a","81d3eec112dfd344650cd1604e5a428fd123465a1a557863b3544089c488002c","42c012b6a54024b59cbb11adcfa2b4214495e1d26589217b78b309067056806b","2985d10cf8ad1992ad270c52182e3629f7c08f983a2418972e02d0c7813b8ee4","5b7aba07a854e6a63765c93fc2c2098355f0ab59d7b4659a94baac072cc8e639","7d5e1a3da5381843d312196fd4a9f69dbe86b152542df1be09d403d47d5e49c4","71d5ef7f970539b9a82546e0bdc1b1069245bf71351875f786a78e5550da4e15","b72fcc24171828b3fdfff6be65bb433d37b8e51a187739d27a216a784d84cf36"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…
Expected log hash: bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"this app is so powerful and easy to use","rating":5,"review_date":"2026-07-11","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 (52d6be1abed1…), 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.