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.

“Very useful in all aspects of dealing with PDF’s”

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 2671651968

Proof data

Record hash (SHA-256)

0f631ad10cee13be0fa6ea0c516f185b015170f44a8b52b976660f8d3ef25e59

Signature (Ed25519, base64)

JSHOMg/JNw+bLcrhiT9CBWFSz3iMuNZ5DquXAgKq0DOXeu/nStYQnb4I9HoNfDOv33h+amIRDUj4EnZPtr3oDA==

Merkle root

ce3d6938e86e6857be7a8efbc85155c1c21346e72fe16d50aed37ed5b5eaf89d

Merkle path

["0f60015e1fc4f460567637736b371e64f3abde8e24e14ecba32d82c029c8350c","9c97a86f0d2535e3a1bfafffadb07fd38f42cdcb3a4d77fe6d52819b36228073","b51e8e79f4ba51a81889e95231d1f4a5c50e141af869d51d24fc4bdd36470604","5079d5813e1a11220006e1f7f3520769e1b207ab119fccf3be9a9afc28191947","d3457c3831b2f2bde29ec325b6872e3d447a85319889ca2db8c226667a68c618","4b6a3f4e0a2c100e15b60c775f0bcd51eea156b9cec898f82a5d00267cafb083","e240f3fad1657810083d9013cf669fe1c6dde16b120c87ee75a1be1d467cc59a","7da5dbf34914254d3091e0ac82ebbad3cc9309f690ffe4184d8a5a1f554708f4","374a157088c1ca05364c7cf6a1a91bee9892c20fcb9018afdb83cfa3b1b88588","bf471bb65bf50458221d960501c7e2a666d20e92dc508d5c8e5db9be48d436ef","8979e837e8d28c4b6e9cf6628f98967eaea0782264bf5e934746fa503f62458f","655ccc7fe9b7bd47a97ec699b9f805ab92dd2257e5247632c4f4dde68cfc6c86","b30fa96b054eb8908168690ff8b151669e100c89959f7a8fe4c48ca457806f71","7c049e8780522490a97cb683a0735593208d22b55a66f49923a0a94c3b56e5c8","6c9e445e142590592ffd87f282aff1887c35a7581e681839c186aefd59fc6d6d"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671651968 · entry 108e9186e8c5677a6125…

Expected log hash

3568e710eedb6ffaabfb65cd1f12c143a50a3583c899cc455e67b87a19e5bed5 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":"v1788237937782","kind":"published-quote","locale":"en","page":"product:smallpdf/ai-question-generator/en","quote":"Very useful in all aspects of dealing with PDF’s","rating":5,"review_date":"2026-07-20","source":"Capterra","source_url":"https://www.capterra.com/p/172606/Smallpdf/reviews/","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 (ce3d6938e86e…), 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.