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.

“absolutely a great pdf reader and editor”
Google Play · 5/5 · 2026-03-07

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 2515439294

Proof data

Record hash (SHA-256): fad2c83477224360fa56e5e8e43a634a9bea60b81a81bf76aa89c329926515f9
Signature (Ed25519, base64): goG9Fasj2yRbY/rSGclrQqbi4Ke6RCnjr875IAB4qACxkYJgbSmbtfzwSf+eJLJFsf8v1trliq+xUeT9oABQCA==
Merkle root: 8c6268a14330d1a3403c561e774645b0671f81571ec1735d4674ebe1de7502e8
Merkle path: ["fad7e24e69bfcfd098026d761c4e926d9f2acf8ff8868ac98f0034d9e03c36d3","1436f7c66e2ad6404639f1cb67e4d28815c3992bdd6828772abd466b4bbe5d23","44a6f7fc7889e0779ada206a4b6e8bb22970c95676739235dfe9e36582b5ae75","6e55cefaf5c46a4364df0019444da91cf586205fd0e17230b88123c7280c3ca7","66876d0d5c46ef6f9117a702ac838ffc4c2234749427b1342e86ae94a67d397b","b447971de6c0b0b51c7d34aab4200d487e5d967d98c6f9d3ecd586506470ebf6","dcb410c3bbea3dcd8b217cd9c7d97165752b5dc3e157b33e68fcdb52ab5a2304","f5fd59b97b22416cb4d3b3db6c54fd339950f66f682859f07a2cefdd92b74ea2","7ff63701aab0f2b626107e8102e21fe1575e44fb8eea4cb3720478fd9b4011d6","2bd43b4f1e3f3336a4a9afc9f24e20a2963bee2a4c25936802baacc8d3737fe0","1f79c9eab7bfbf1c5afc67f3981af0f52a177533b212b5266dfce64e07fb0637","fbba1df861b4ec266471c280805470ef5a23e2d03346b6c50e4453cb7a331a51","2de97363b84c3a3c7892d6c13559facb127180f7fe51ea764f30fd45ad533e91"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515439294 · entry 108e9186e8c5677a4f15…
Expected log hash: 128701fddbb19410bf57cdb2d04d7a0278d13bcfda6410d76f176fa58341e1c9 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":"v1787141082461","kind":"published-quote","locale":"en","page":"product:xodo/convert-pdf/en","quote":"absolutely a great pdf reader and editor","rating":5,"review_date":"2026-03-07","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 (8c6268a14330…), 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.