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.

“Best ever app for reading and editing pdf”

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 3140627354

Proof data

Record hash (SHA-256)

0e4b7653e4eb3776615a6f335f91d7bfa4e9b0dc282456d8678073a4125fd286

Signature (Ed25519, base64)

91cYNuPGfSOkJ6AveaheUeRontL2B8WtULQzInIiPl5hZY+6sbWFcgMqoPX7QO3tj3NUIiy+YNpyvsYLvWZeDg==

Merkle root

7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5

Merkle path

["0e3fb90c5ee837ae7f324621f6f14b697c7792ade5e501baa9f2b3fe082e811c","cc789a1e8881af0391f923c358706ffd9e7d6bd18d6971ce53868f4e6980e041","4d3a26260b3ab033e8656e1925b1c5e516337523df8ca001810560a63b96cda3","1784b4c5b5e5c161d625c3efddfca7501a6bc59cb178913acb493949041486dd","6344e9f99a926da6e1e2dfcf34aabea984102bce15bfa37e8d351931a8229ba7","b84484d2dac45b70b5c7ce079e1978ec2c1a2d7f44993e22127f76c75700212b","10d3d7e7cdcba98b7b3663b2f49420ca2933b940892ffb25bdaaf0a1bbace5a1","1fd17ac18df6b7ee62507ada9f6ba96d232e490bc73c3cc842ec1674f21b7dcf","3e909d0a86b80b8e88c117a31f77477c1c45dbbf6b3349c0ea4233658a85a37e","ede0d7a330352ae87ea2849b8972a2bc5e82205c7a58b5072dddcde82a3f250b","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":"Best ever app for reading and editing pdf","rating":5,"review_date":"2026-08-01","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.