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.

“the app title says you can edit PDFs”

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 3198489507

Proof data

Record hash (SHA-256)

0c631e7f73927eb066ea1d7f1768b45d0c7fe3ffce0e7ba6ffff65caf5098a86

Signature (Ed25519, base64)

OxXI1wQofsTkrH7cbDdd+iWENO6KBz7YFR85ObbRV1Zh+A7ZPEd+ujaqUE+v/rs0JWl6Tr0PR3L56K/1kGMsCQ==

Merkle root

240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494

Merkle path

["0c789c0ff654fe4b2c9585b9a7f04bbafce495b19ec306b05f1e2b02c1f3a03f","6d26f9e3767f58e84d6f126aed8a0a9c1ccc41b136b791941a7e3c6d86f9189b","91dea45cd537ef988d042f98c9246a2c71b1ea1a5930ed000f25f2fb9fd360f4","c50227a4d5e22a45490908b607b35ab3d157f10a03f71c5ac02428a575cb683c","e4975cb590b0c8b5da362c644e4a438a198b454d486681ff8db575fdbc02b467","547b57c7808410f72df841a4a6dce5dc3a19ad77c7217b7cee4c3a6b8b83bbf9","1ee3a3f8720b7f7d8c0a52363fe15090c550c49bd06e9addad00112c29c34921","c9d5d8681632ea6ca323bee19805c1a766d6466942351b41f1c0def3713b7b61","182607fcb09445c0c452aab24d39021bcfbf7fd0c5bee48b04632254bd2ebd31","3d40fc19ce8a7d89397e4b10739066ff6195c37899681649674d49ba8672bac8","d0703001e5871d88caf60f12d372a2a578e62f739115a92f4ff929e748ddfcb8","8d2863d47cf1e91a5d95d44242edd815a5e649d3aa8c8ca4de0cb4b30fbb42e8","7115b4e40dabe303dca48b39285385aef0729dc23733c818e0f3ca68286a3ee4","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…

Expected log hash

50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"the app title says you can edit PDFs","rating":1,"review_date":"2026-07-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (240cb9349179…), 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.