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.

“Ich muss nur einmal verwenden, um ein Dokument zu signieren.”

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 2670402210

Proof data

Record hash (SHA-256)

0a487db2e1c88c4f01a43e806bf96d720a7090fb3381f3934627505542fed2d6

Signature (Ed25519, base64)

J6tBNZWlkvTjyFtWANP+7fiPgkgQozJrND4S1X8rX1eKacvF6nXxUbXGLE8NvEVXWQ8kHfNYtsONVCLJF9/jBw==

Merkle root

70a672ba4f99febc4973332b6c2cf94172d87101aca638fdfd56ae3131b117da

Merkle path

["0a4d84470ec05b143f1d8e11a8681f6dbeeb1597b8fabbb6545f0b9bfc610f28","960b01d50ff48915fc9012a3c541c1e07bfcbd0420a2da5736aaa8e9dfb837dd","d7246155fe8f45ffc3e85f079c5ac74930a38eeee0c85cd36ec9dc755a944627","ba40f063a68d4874242e17056c162b4d4dea2c081e5b4a1e18ee8bdf7420f460","6e6d9c870f3fc4ff06bdd37a50ceb483014766f6599abe047235a45157e2169c","120339eadf3d45068c2cb2aa5f82ef91b58399d4218b9580b85db8fd7506324f","2f63016711df539aa172a8f1d315f8e163d52e8c6679dda527808034e0dfef14","c9ebc6468986094bfb06779944b3212b2b8fee175bd23907af8aeda6d31ac8a9","c018e9fa42f53568f5a3e233884060096d2ae9640d24574752786fb69ed2f5cb","10eabc93322126303c49869e41056c542dba7325cc40cac836b33e23e4690ace","7f2e6ae0544b8b7156b0d895c2f2bc63fa9767f11ebb5347c46e9c07dbb6bcd5","4c04d3fee6657409c8b6ad68998dd9bfb46486136283728def3f1ddbcf40a7d3","87f61d26057d4fb4f6a740a063ce88db7759266bed7950e950bbccf64bfb6be6","1f37dc6912cfdc60064656f6b3b1ac7b51a18eea41a11061f5457370784c1545","c66ddd9e0c503da25c55afd584b26557c7acbabc25078f9f7593d3776356303a"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2670402210 · entry 108e9186e8c5677aa13d…

Expected log hash

4c67c3cc128b94bdb5d524d39c2018621ea5c6ac22722b8aaf21a3d775248c87 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":"v1788228248765","kind":"published-quote","locale":"de","page":"product:smallpdf/sign-pdf/de","quote":"Ich muss nur einmal verwenden, um ein Dokument zu signieren.","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 (70a672ba4f99…), 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.