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.

“As an early adopter of SmallPDF I've loved this tool for a long time!”

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 3240367269

Proof data

Record hash (SHA-256)

02067bf78d4eabefc57bace675df126996576c2eabd74369184e3223312e79d6

Signature (Ed25519, base64)

/2Zwwl+26Ed613Yh324RjQJSUI8kXgsMAWVY8gsXj1uhz/Rk9PENcojEhaMNFaUJ1Y+lfZtzLebxymTOzOZHAg==

Merkle root

1da6cf8d96c8876e66e82e9bea7529c76d7e25eda1c07550505caa1baa49c4d1

Merkle path

["020849e41b2e57f0fc1aca3f42458785503c816613819e5adee5dde83e2393f0","3eddeab38f3a4e393091f425a1adc2dc83189314a7771d25fcc981e2c117a8d1","a1c2dc53d40e136a2932f95f5c7f6964f040ad0288b987c77e396ac8ee47dff5","e5a98cf084ad0661be800c04f54d46fbbcb1121c3f3d0342f5b727d551ca5454","8799671d0f2918b9b0b936cd90853b428ef3fdd302fa6bbc8e2297a561a3ebcb","38f6b72a6ea116114fa93323a54c8827b18bc605297ffac4ef1cc9d9e9afe3f3","051140a59fa8ba530c0e0b7152e520cc302cc8918cf8cc41319dddd32665b43a","3d83e7f34a3180cb7dbea5a2a572bf29b8de53faf9afcc54ce2f6ba7682ceefa","4dab19d82f8e5da524a9ffb76b931e55eed7aebbbc363c55a30e5e442a7e2001","2d40eaae35e424d9888d333d8326b3c6871041f9e300aba4e6483748a8e942ef","f0e4743308c97cdfb9d7e257322f5fcd8ac75eb83cc4eb10155c0a0d14a396ab","ae52329abaf68e9da165e516499bae5b8b1835a4e008f4e52a7a7b160cafc13f","d0886e619546ab8e630cf9041b21d39a146861d5b7598b5044808c3537212a80","2d81003ff1cd2149e42eace973cb0f4cdd39b653f7b06a20804a1f1025023ebf"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240367269 · entry 108e9186e8c5677acf8a…

Expected log hash

f6397ecd2b8639a3c60345d0c567eb602411c7eb1bead248c760bae850816087 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":"v1791861381931","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"As an early adopter of SmallPDF I've loved this tool for a long time!","rating":5,"review_date":"2026-08-06","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a745453aa09066ea002c415","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 (1da6cf8d96c8…), 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.