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.

“When I need to compress, convert, merge, or edit PDFs, I always use Smallpdf.”

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 3668908157

Proof data

Record hash (SHA-256)

0007c620c4971d26e9af3a615029fe4d61154ed2b4704cad8491f359130fae1c

Signature (Ed25519, base64)

Q2IgfNQK6qM5Oum8hok3pzl0Ter6ldLbYQc5fo3PoVGJcPsg8fPM9j6cIs9A0c+6HUhsHJMe3haE9VJoeq5WCw==

Merkle root

05cfc62de4d0c54d5988c234e4de0ad83bfc41ea25849dd9d979eded6f322593

Merkle path

["000de516a0a5b8fd5d8f492e7ea8537c7a55db1350975391513cb3b344e013aa","42d14442e8d645cb89fbec279ed7097a064097c086cfad401cca284cf9e9e9b2","98c5e8e479320f80e111e71a07b1218d0cb88d737e5f0851ae7a1b75510f6bd6","a1329f8afa600f68ff5bf994645f99300f2bba6022e63feee4844f57d074b0da","88103be0034ca286d4610a4e7db376d0580239c08e8877a703c01df7df8b5878","3396918cc320d9d7408a64230f8055c941afafb9bf5850cbfb35c62789b0d3d6","0927878ae1749f22b6199c0e2c1600a7d3d195327db02556f599070d91300f19","6b7de70c25fc70d3c7d7957327aa1182827bbdae362bc7046c5ef5d6db4cf219","1b0c2921b8c065e75d9ba281faa0f344e93a7dc3e54df18e0ee981c0021ee675","24ca0b75807d76aba4d46e3d5a18cc94e8df1204d6607c0a2dd3c26c9695b31a","065729d96395e304fddfe27eeff74b8f1f0d5044a256599a2f899b5336b6cbde","c10e7a497069a8ad0d43c03574ca1525bf4e3c77b72778d80149d53e277da637","63be509b3dc15b74d2801a17187772630297b93244215543f157cb4be936b8ef"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668908157 · entry 108e9186e8c5677af58f…

Expected log hash

554a3bd1bf640e4c4cee904a7897bcc74cb572b6d2b741111b4ee09cd6a9dd1c 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":"v1793707394647","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"When I need to compress, convert, merge, or edit PDFs, I always use Smallpdf.","rating":5,"review_date":"2026-07-29","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6a72d4fbd5d14ff395fb74","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 (05cfc62de4d0…), 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.