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 signed up for the 7-day free trial on 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 3668531329

Proof data

Record hash (SHA-256)

108ec1d559f82320421122819334c9ae3576cd98b232db8011537072e9c4d7c9

Signature (Ed25519, base64)

vjjEinTMXSwIho/DpkO1gMZG7Xei6xeoMeCgn3x4nOiSGMOMl8xrJPHs4ZQYlB8SrPqq9SGkRuvTYpA/jQq4Ag==

Merkle root

3b072629e9b16970356829c050ce27926428f47e05244a6512bb40569787f050

Merkle path

["108fd33329a56e9fc224a14d363165200c96dd2ff12c81488ac1170998bf6ec9","9d55450ad312d7f22c959853cd19f33ab6b1adc3520ec061f86be1392f8766ff","fb901d4e06263a529287df7e7a3e6094f2489a24f74067bb066be5177f00f8ae","9a92ce32939595d1c9c074142d40f48e14dcc5c1e02909d94da0b5bd3b2df49e","e743f51a1456ba0d69ccfa3a7bc96c6491e26bfdef448a437b340781385a0a20","5e5cc18971be33cf30effbf84b252d8d4db22bd2939e97b3b8e72724aad1bc0c","5bbf77c6937dd8bdaa01adee1e8ec6522ad8efc7dc1e5ea920f15f2071fe4a6f","1962d7b34a0d5965cb9dd62d82a545c790c28a71c7cff361f75a48493d2e0ef8","39713752fa2df4544059264d1a81daa2ce2086d540842a4ad1e9dc2b2affa7c5","2546bbb5868712b9205178240bf757f798118675345ed80fbc4932bd86e1955a","931304e07f112ff878cf7db58b20cae35948550329443f203a6cc9d0ca1f7abb","5ce503796c51bc55f222e1ca83097b0aafcffa9e43cbc2fca3c86219ba57a7ef","bd647c84f5a5709c34b7ff67afe5db551f8d36ed60e852beffc039c8af7bf210"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668531329 · entry 108e9186e8c5677a190f…

Expected log hash

70b428762b7d47d774fe78d442b8bb17fe4b721cbf1b3e9cb1fc9c9aac05be8e 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":"v1793706202681","kind":"published-quote","locale":"en","page":"comparison:smallpdf/en/vs-ilovepdf","quote":"I signed up for the 7-day free trial on Smallpdf.","rating":1,"review_date":"2026-10-26","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6adee4418f7ed6123c059a3f","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 (3b072629e9b1…), 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.