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.

“Meine Gesamterfahrung mit Smallpdf war sehr positiv.”

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 3198489507

Proof data

Record hash (SHA-256)

01c9491d4dae3d44eb374207a075098cacc685ce3b42e18e8e351fa2868bb319

Signature (Ed25519, base64)

sqNpIOUPMYOAiiIZIOJd38NBXXNBTduqnHrPsLifvXhlWS4QZctKXTT6iPCgeDTXXm4hq4ISu6aKl/MMIxN6BQ==

Merkle root

240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494

Merkle path

["01d537fbb4d1d80e5d4317e1ac97f38246c191ed0ebf82c2c6061fcc2c103825","d9800cfdb42876eb96ec857637b4e889f691452d7229bfac9d73508e09fea88e","b2d5a737d0e02302552126390c54731347b5b1df0d83f7ab2e4725bc18987209","9928e07bf2d4a32a5d5e9996f2ada716e37cb44b8b8b4a130936ef75ac5bfe75","b2db1439c9c620f9bda94d9b98299df6abe34162c31fc97fe4ffcc57b5b3d759","68a3333a8fa6bcb3bf5c754128401ac3a393ab1b2df27df0cae2aa079a859e5c","86c2f3330747fcc565420c962fd2d5088580842bea0ecf333817580205250a45","e7b05fea52ba72897228005fb5e8fe5e543a0c2945b06cb7d78b30e910bc9bb5","8009b111f1f7876cff9e250c49eaf544591d4d82e69f7763b4edfcbc5afeb7ce","912fa476c0b6214eb193d8ffbcae47109c7e05dabba44d75b3c644e29585b492","d0703001e5871d88caf60f12d372a2a578e62f739115a92f4ff929e748ddfcb8","8d2863d47cf1e91a5d95d44242edd815a5e649d3aa8c8ca4de0cb4b30fbb42e8","7115b4e40dabe303dca48b39285385aef0729dc23733c818e0f3ca68286a3ee4","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…

Expected log hash

50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Meine Gesamterfahrung mit Smallpdf war sehr positiv.","rating":5,"review_date":"2026-05-20","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 (240cb9349179…), 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.