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 used Smallpdf for many years.”

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 3140627354

Proof data

Record hash (SHA-256)

025d53ca9ab6fbf61e427d8986c6b958198edbc1728ae5a7a1e0306ac2a12104

Signature (Ed25519, base64)

aG/s6Vf0t79fW5bNpgr4875lsO7tNKwSW/cNwi7ihHI/jsWBnjfqDa5pFvg0Rt4s3hQOWXW4MfphkczO3E9HBg==

Merkle root

7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5

Merkle path

["025cc0de5d9160ef9453392ca2d995996b18b1fd93311c7fc6b8abb066d9a485","67888c4635e8a930e7b30ca083402b683d7fbd4b246871003e5264aac0efc2e0","39d3fb863b279b4a0e8e1aa565889373d352bd3b4be066f53008001b58a55506","09c9cb54a104bf5bc91d50e349fbe8852efba922ba9a922453896162173ee600","a25b6df6dd469f9940618cb84eb99b84d0b3e6ea4ea66c78713866e2ea1c9deb","9e177ae60923e325ae19e310c67e085256c1483ab01991aac20fea8c2ff777a7","d6273fa7b5cb287288943e8e05f88f22ce0d40f846427423e858e879753e6adb","c6ee08c6d05bbcff6718000402a7012b3376e5167458dc21fd3d9c615bc5c080","e0d6e08496b9289f1de4bcb8a5a0bb5e224e7a8996ce8518c033deff81a88d50","495389d6911b753785c91eb118b711a0c675a1b7b07a6a3899270a48feb63542","ab4ecb47b9931c116148a235be2e074cd3889742c4f67e457cf53306f3aeb55d","5b342c675b348d4a0b82d232b6f1d1714e25356f2be91df3e28c6411fce40f95","792fea8d115ac482e9fef70a7069e557f2efb1af634e94e47f08bdc3862e5a6a","acb249623400215550cc0881339acc244e91fde1fa89bf36124dd51a7bead968","76edfaff3d5907039be8c493f114c2f6ba10fbab7705dc7ab77a269ec79893bc"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140627354 · entry 108e9186e8c5677acc98…

Expected log hash

82c9bd063e624267c60865e2416c3d714724e2c3b18c4773424cdf17232dd6f1 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":"v1791432333296","kind":"published-quote","locale":"en","page":"brand:smallpdf","quote":"I have used Smallpdf for many years.","rating":5,"review_date":"2026-06-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3d675adb4393914279e032","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 (7e5597bd3c16…), 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.