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 habe sie nur einmal verwendet, um ein PDF zu erstellen.”

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 3240422411

Proof data

Record hash (SHA-256)

047213caf3a099dbfe9b516fbb1b90832287f282c8a38e0cdbb75f4ed0a0c653

Signature (Ed25519, base64)

w6SvS9a/1C9gvaXMVa2NwEohGfb4pvkXf6xDH5e8kEfvmxu3k7cVyBU0k2PJ5zgcR+j0VJm1Nudf+9PjLeeLCw==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["0472646de2fb83206c70da52769cc2a3c9ae79d5c99627d1283d9f1fa5a77fd0","6d088df83f69f7d4617c9f8367109cad557ff7044b6393ffe9c9f2bbc487f970","0b467cecceb0ca74c85a6239124f07a546c0e84e4d2bfd7d9a7f8024e328b61f","1d82c7ea5b5fe3b3b7259cb36e027c2443949f25a81e169edadc1246bdef7b78","dcc138f525d3cf38a195a21a39e345135268b455b80da685c931535f869197db","c0ed2aa2c54eb7ef0526fb24728661029d8b2af2fdf2f8b570af0772dc3ddc60","0f738ae1a16c381fbcc973ae42ebed853a18ab14ed6eb069f9e6c00d1bc4515e","228014fb6d9e07ca0409586d46599e9cecf330c7c6694321d3c0cfb759f9525c","8e4cafca73730af61e510b30de29c01df651dd4fab82e12e248e97de4ba8c09a","5090dc5c0fa0aabe56cef806251e888576df73cab4990e2c04a3e7fb3b88d3d2","febf287b7c32a2fae856dbf526e351f23b5b8476b4c1b3e342c1def13e494cd5","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"de","page":"brand:smallpdf","quote":"Ich habe sie nur einmal verwendet, um ein PDF zu erstellen.","rating":1,"review_date":"2025-08-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (825dbc6ca55f…), 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.