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 has to be the best free 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 3248278454

Proof data

Record hash (SHA-256)

040be4ce783ca9f0387450fdd719bfe761c5d4d2be46f7fa358ddbf410681a53

Signature (Ed25519, base64)

k/KFQ0C93H+gtVvL/DIQnTMQjFdHUgiSxdKjTpRLDI1VjnNw6bdQ9QukMtNPjm50gvnc8kJkgptDsVTy+VCoCg==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["041155e0e7effd658287c7c2cfe26d3707ffea15d08f8a7b6620cf77720d1528","ce559fa7a77472ef3cc077e938a65d1efffd2bd75abcc4d8f9390d09eb411986","8583323a2b2c5016faf6d9088f06b50c8cb7349906cebb70797dbfc6a42d427d","f17fe28878eb6fb525d96c136c622f1cbc836fd537634c2bacfc42332c6b46e9","6361a09aecdab2704d1812e475984fb75d64e7a92d2ca9f1807c4875032bc9cd","27b50161078bda74ba3ea1d7b85b91eb6327ff58b48ae13d2ccd92d5b47ab9b6","228f6c9a2161026db9d9bcfd3de550e06282101b9aa49534e4759eb76e5878e6","7fd73ec49bd2ed7dd2f6258b43ddd9a8eeb0e23645be64022e8a1cebd935dc7e","7131e82b44930ae1a8f52f0aa6193ea359d9dd419e36434651a122dab9ba9d2f","80c1b1f10d8bf284e2787ece94df09442da637212ce15d57f52e414d13828c35","9008bdb00edbaf075b061c2195544fdadfcef10f8389a786f7422f7a7fa7a2d9","0f8ab31a8b7f9aa6ba4ff019c72fbe9792e5837d40b3bad40ea1cfb0cc79e40a","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"This has to be the best free pdf","rating":5,"review_date":"2026-07-24","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6308c9f376196423331994","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 (81db1abd6b6e…), 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.