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 have been a loyal user of SmallPDF for many 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 2680856520

Proof data

Record hash (SHA-256)

0f2df80ed6d4f84aa69be979652a3f20c3235cd6b1e0fd06585f797286bcf4a8

Signature (Ed25519, base64)

V+IWYSygEVu+y4VkEgzCHVvMwLHYHflinAqeJCg63kLrX3P6mr3e0JI7dXQG0OKvwGExYtF4L/5nRYlcwFX6Ag==

Merkle root

e42defaa0a17e226699ea4a82dc9c6dd27c28085170ffe1d62d8c6a4c9215db9

Merkle path

["0f2f0b30abd198f225f71f040c027392da7dd4643462ad032b817eae6718da89","2296f9a018ffacbe45d96a16e9978e572e757d1e12f6166234cf2ffa7ea07dca","17314decb7402194f5452f8e3e91035797d8508678de64dff1a6cbb2bb4534e2","314e995e73ee562809e39b8c99a09fdd251396916096b700da49ebd739e912ba","19c202ef8052754ba1fe11a05134dbdc5c69f3a484b1e5b55783053b44837e8f","babb1e10820b2a1a291eae0ed7e32817b63581bd67012dd0060663d72fc55485","82d8fbef27395b1c862f34efdba5362ae680b1fca67259b774fb1a3857d93aa7","aeea7383bb6deef9b3029ba0024052cf78bcbe13673829dd4d079ad2585f4f7c","e1403b2a7da04f5543731fc91d8ae03c4091840051b017372bdbd4f664452509","8478dc263757b1748d5eb57177ad8be3a4710572148da246adc6d3ea6c28b848","261e71352027ca864df620d9e191c3c277f567830b0fd5db35ec1212846651d9","26322ecba042f86a8a3948f32fb985f61482003505576f985a5eec2ec4c81858","a723e3192c73ed0856ed765177b67dd95561b4a0d6d1c0b16f64f339be4f05a1","f9b10a6aa616ed717dd3cacc1714fe509709e95281fdde9fabb8c6943e906d5b","270a8fe791f18cfa20f43263c29329704ffea666703469cea18570c7ca1219e3"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2680856520 · entry 108e9186e8c5677adb25…

Expected log hash

356153ffa6072187539ea75dc6dfb23d03b74238aa8aa70cd6aa9a6a99e983d4 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":"v1788298923475","kind":"published-quote","locale":"en","page":"product:smallpdf/sign-pdf/en","quote":"I have been a loyal user of SmallPDF for many years now","rating":5,"review_date":"2026-06-24","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3c1c9a2e2bbf7b452ceb94","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 (e42defaa0a17…), 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.