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.

“Simple, free, and easily accessible way to edit PDFs”

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 2612065734

Proof data

Record hash (SHA-256)

09c55f51fdf3fc089f72f2cdb4c23a9c3285135dc5257c352b7c2b31686b6a97

Signature (Ed25519, base64)

ND1F0Hk6lcX7Qmq6WvPYMckuXVhi5ZqIRP1PEHpGwLfy5Ep7Fq1E9n5yNGDBMfB+PBq4rfU7jSpU+77JnsvSBQ==

Merkle root

62493148956a8c17abd53a8c9ed797b64e65ad5bb98d36b7aa8d51c339fff025

Merkle path

["09c362bb02a64510ff14b8935d4658446c93008cbc1f7e59bbf3a2675424d822","661741d3b400fd74a6849b4a8649ecd80bf4501b492ac165a9164e05893e7c2b","0970c2a0bdb1c4751049de4dfd766415d968da59ec4c1d5e36461e0c5007f9d0","523fa1e84b049515dedcd9680fb7e5c0f5819ef8144601cd77f1cc935c9377c7","1537534ace6d823a8947f597fae6ce5005a27e7c2967e49cbe3e998ee7150d66","c1b59ecced0f9a7cc8445fd056333958dc243d86b6a92e45f5ff71a96801ed96","2216391d05e636b3a61c917e75bdde0e2ebea445e70d97e09b66b4a0a762d45f","fc36a7efe7797b3448fc29571cc038616184cc9dfc5d8f5b900b1f5792b8f0cb","236d3cac96ad5d11fcb7403759dbb7a5f20c5762e4871ba5a3ea17305967ec3f","06eea9849e882ca69ba0d540af4f40537afcc231ecc38e349c3e3322b8410a9f","b0590550f11f33ed86fb55c9faaf0f398cd460e344dca34b97360a8eb25428f8","aa27e16e99a5c7264be75cc6d887e1542ad1b5d8e7c00024d09648982d3b9c13","0d5bfb2982eb496ec91088407bc450b593806e0482bfe81826869f4aeb42c62b","8c6d2c7076ac2ee0b8e592fee4b535c629bf4ba08a80f3d9ff8794fd682b8ca0","81ca6ab71bdfc38d6690336508e82bd1e82f9a656f0fefa771d1028af8c796ba"]

Anchored

2026-08-27

Public log entry

search.sigstore.dev, log index 2612065734 · entry 108e9186e8c5677a3494…

Expected log hash

f8318c40dc89e43be6c4faea0c023b4821c7ae9aeb6f05e59b451eef93c53bdf 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":"v1787797679240","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Simple, free, and easily accessible way to edit PDFs","rating":5,"review_date":"2024-12-17","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 (62493148956a…), 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.