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.

“I've used a bunch of different PDF tools before but It is easily my favorite.”

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 2621505474

Proof data

Record hash (SHA-256)

152d7ca9f2f7b9c5fcb051c97a6daeedd6764fa15d7b9ced2c96fffe20e784e5

Signature (Ed25519, base64)

ozweNnfCuzjm/MSTKAeJ5lhviN56M9Dugge2XMMjrVvYlTpf9fazKwM+dbptmIL0hA0X8H92J9FFV1ZOHj0CAg==

Merkle root

d07487a7d8598747d5b143d9a16722ca7a83f5bd36bc79d5bf9130c2672dae41

Merkle path

["1532ebd0f8921d461a35a6a2eaa0c2290884f2155a2936d1ebdebb13a9b74bdb","402a1be0aed4c3ea7579d33db3ef615108ef3bcf351e5b33dfe6897f7470c263","8519f5bebb97610f016cbffd3bf9c36f51e5351e3b71c065ba605c6cf28b3c6d","cce739f46318c21c2c4f4cdd2b6a117f7418f3c10bde211f18bb1d0ba74c2ca7","0dac9918c5e9d55b321b434e5c7d3cab9b451e78f845b401bb3ba841769fb8d8","02d2d94e84ac6a027abcae7e76a1b0c1f18442b90517fbedc67ed503838476e3","b4d7300367ce3b88e240eb889d89569ef0aa5767208dd24ee08b120c9dfe8b08","a0138e331cf5127e91da78ed3346927624d7d9e8f897f3d6f3d6c7eb077531df","a6167698cf381e5d81cdb23fce008b512914640220408b3a2abfcbeb1ff071e0","163814efbce1ed83b6ed88edf03e6d90d8611405cfa27305f323306bd8803e5d","51e91757fb79771c7c3e7964ccc1e1bd4c83f91fd12f988f28fcecdd9b9fe112","a0fdfe7690d005e054fb3a90a34d7cb5dfb00910c185dee375fbde390d3c55bd","884e6220e81a9d5982bd71d70ff9eeca2e340f53981f663fa0ca7490cce6445f","39aaf77ef5b3e4cffa994bd58b84219ff7133fe1d71c02bfd8ea2a47d2f7467b","fa743bec0c13730c5e9e6be51f1ac48c3e9e0953b18cdf4cd6390a132151d0a5"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621505474 · entry 108e9186e8c5677a1258…

Expected log hash

7fc4ddca6f65b68d7bb8897b96188547f56c1ba672ff212c685cdf4bf7438da9 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":"v1787887633012","kind":"published-quote","locale":"en","page":"product:acrobat/sign-pdf/en","quote":"I've used a bunch of different PDF tools before but It is easily my favorite.","rating":5,"review_date":"2026-07-09","source":"Capterra","source_url":"https://www.capterra.com/p/251329/Adobe-Acrobat-DC/reviews/","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 (d07487a7d859…), 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.