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.

“SmallPDF has been an indispensable tool for my business for years now”

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 3668680919

Proof data

Record hash (SHA-256)

03b4c37b906dc3398896d34ba40b98ef273abdbaf6d9c8fec67b086c22b4aafb

Signature (Ed25519, base64)

4NuyCdXzFoP4fL572sQ17HCobQ77XGXeuwMpiMFwPKg6VbKiP6nYXZl9oCP8GqmxQcP5E+f5CLaHoWBV42l6CA==

Merkle root

2722cbf3688f456d398c2c349c50045e96cda26d0251a390f403bba716d64c3b

Merkle path

["03bb6fd8dfc292decb2f123bdb378905693a000f7c697c12ad7d8284c73c3548","386261c92f29e433fd90b590f95d6fd3b113b1628b03bbcd414fd8165d8110d5","35108b0b7845f5f8588d562dc7b569209fa4c0575fa88567976da4c931a1c9a4","2fec4f802396bb42a4d5505bda4073393a9973763919e997cdd507f58cc7f042","178248933b879f0c9b9d6b110494a7ae1777b91f749b7b4e32e2e1dbb46facec","f12e95d57b2302754762b078f18b2664fa00f2ad9b89a80acbca33ce2152b114","1280bebcfbc642c54e715d9988a923af7490ca9972bc52ce28a673ca04dbdf8b","fc534d7498d0795d6e917f88b98e822d4a242144acd99f5288357a3c291cc8f7","6bbe70bb44757ba876a3bf52aa7968a437d49b7ef6fb30ce36cb80aabe207cb2","e371b4e731cfddd5e7d5600b642cff649fad0301124bf7b072b7d623903ac5cc","4af332339a39e6ea76d62ed99c46c31598919e13693263cf6d909d061d8efddb","937ccf716598c310ad94912d78036fdd767f36111c011e345664249121f46a8f","e17aefbd7b422ad270c6969478edd518eb38d3eedab10292a53aa045165a0e2f"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668680919 · entry 108e9186e8c5677a7c55…

Expected log hash

b9da8ea83055b2674fdcca0c2d48e6dc1984e46d36af8cf72ce2f4d2b7fd0005 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":"v1793706705310","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"SmallPDF has been an indispensable tool for my business for years now","rating":5,"review_date":"2026-08-10","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a7a25a9cb5fb18cc8ed58ef","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 (2722cbf3688f…), 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.