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.

“It's asy to use and it has zero cost.”

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 2515345787

Proof data

Record hash (SHA-256)

0fa5d0fecd742a156d5a2ca184d5ab7db10395c4e1bc63cbad6fc98dcad7caec

Signature (Ed25519, base64)

yfxX6lB/gaXEbtdrJCWTV/ZCVNvAx8h9xnzq/oxbYN9hPt8voVIbK83Nlp6TdgF5u1r3pOMAaagCiHCpnWRqAA==

Merkle root

e61c2598d4d03770603e24740bcc427581e87bcbeea2e56dc34fd81a9f496465

Merkle path

["0fa23776b494cc0534aad9cf4ec402ec5a6815a2bed38619cbe912f6a8b34948","d7fcb396843e621cdcd8a18ed6cd8bf8cdece2dac709b07a01da8eb00b710323","f4951134d1eae013add9bfba242d2e3b7362453b146af535f4d3762d53475af8","cfe2ac39f52f1e58b9341caeff6bb2beb659ee9900b9028918ef7d2f6671169f","fbdddb2426a65902121feb8b543b436e48e57f7ab648026a0853088d5bfe732b","cc42301145da286c8c0426c9435cdceb460771300a80a09450b403478706d315","067939ba2f9d7fb860990df8f81dacad49183a7395b5b378e8761dd3ee3497ae","73459e3aabb8662736cc7801dbd10b77d8be3709423c1484928be91ab5db12e1","04abc75f560c90f09183b85ab83b12af800685ea6b092a378ebaa20179f4fa46","4229b54938cf2f7ddbe7cbcaf5ae39cc6094bef9dedfb559e444593b5c7213c2","0355257e4917e000c6318af3e8c062e35c99e19d801c93fe03c534557ba3b1e2","82c59a1f070110c8bc72c9d5838bf722a464300d8665e875d27340c85eefead5","40969aa912cd897f062ef7b007bf23221003273332528476c6c56656ab8df18f","c34fa5ec75d6e3462dddbe081b828d412a3a575b53cbb348f7047f6afbe95056","11a62e67a9d98d919358ca5b8855f911ccdc865f14b203213de31adc67657443"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515345787 · entry 108e9186e8c5677a749c…

Expected log hash

d9a90b5e7311041bf4315991ca7f2fbceee461daa2ae70a8b8b95323461a31cd 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":"v1787140356347","kind":"published-quote","locale":"en","page":"product:smallpdf/sign-pdf/en","quote":"It's asy to use and it has zero cost.","rating":5,"review_date":"2026-03-05","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 (e61c2598d4d0…), 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.