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 3273342496

Proof data

Record hash (SHA-256)

055ab3003e85d4f06d25d7c4bbda0faa092d3d2253f0560a631f7d51fc2e7819

Signature (Ed25519, base64)

Tlstva7XX0DmdYS7yHEq1yHmnTPj8/fC/ecMed2rltXHtZzJFX+oDGhyzHv0XUaaq2JA7DmvC5Z64u/27HndCQ==

Merkle root

a6a2b4c9d7d1eafa4a3ba3595aa08f11c105165de84940ffc059f837c445104f

Merkle path

["056103e5b486138950cd57193b043b2272db382ec219cfc267bfe6a1056ac907","6ee064a96d3f824eef7a39dd8d4551c7dece625e35208e053a989bd0d2a1d1a4","76985519e6c5b8cf0b76fcceed0c71bee574e6b7a0cde63e69ec00c4e6f26d39","3cbbd41be875f7fd652f9afb80216c3e94faad2a176447d7dd2fccc29af29f76","0888e4616d2757c49ed04dc4ef76258d87e431fa3cf0bbc7630273a11e413991","43c86c556426e930700ec0fa79a5c1a845d69d6e70bfefdaf97056beb9f5657c","81fc61bc2509267c794c1d34631dfb7a2850062ade8c05a787fdeb76891fb7ce","7f1aea9e70e2cf0abeff20233135e57e42074c1155dedbfea4fd3d11e7af9fec","e3a3044b3fb2f236f7320785d76a570cca0da208ec7eafe5c46eeeb157678dff","479af64c88a9b31eac343ad2b5c3846a6a4c692d0658cb37903b0656010cbf60","ef1d3fcf78029ec473afa04ada12fa541b7305131e73ab1e85d017d4593073f1","8ceb1cbfd39c6c4db73ef7ebf9abc517c7ad214544f8291eb9ba9ebb0a70e4ff","95302ff16156d5e277933eeb7a8aae0bcc9cd9ecc1e7491c1aab462ce098abfe","d9b9cce27629bc902030340ceda068fb90d53ddab20309d3b3d8bb3949c170f2"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3273342496 · entry 108e9186e8c5677a66d7…

Expected log hash

8a8ea4260f3039926c3342603d4fca7ca9e5c627d841ac1c7142e303a049d0c7 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":"v1792122420855","kind":"published-quote","locale":"en","page":"brand:smallpdf","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 (a6a2b4c9d7d1…), 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.