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.

“hat überall das Wasserzeichen drauf”

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 3220562278

Proof data

Record hash (SHA-256)

1a8c7cce54ece79ae90bdbc51eeb8413b25a33415b8680620d22f76cb1025631

Signature (Ed25519, base64)

3kBi58jq593kXVgGimi0bP7dlHJNFRKBrSgBxM5Vkz6jZRA9TiGsM/U5nZreE87YI15bcd4533jhF5vVREXYCQ==

Merkle root

2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722

Merkle path

["1a8bbe205fbc1edc6af2983e8a43b1a1c5c41d3491a36f90f1736729cdddaff8","a7233486f55abffda7f76db251fc64810471459662af6cdd4e83fb74eaaf2475","8d6fd7edb6093eebbcc6ac8e0f22fba43814a653891d3bcb4c23922667d42f9a","c2622d5cdc998adfbe69585d4c733d391777add5f53ab492a2f397c88d8c5490","f0c95891f50503f375dfcab1a1c6a15c0d5ce9c22658d5478c58487bb9df9282","2b08f7c27646aab9ef0e22e6f4eabf7219c79ce9fb91d05ee8aee524b1b280bb","52febd878ceee843af99ffc6e4ec2b74a5e960c367b3b3136a3bbd45a2a294b8","77089bc8a207698014c0400746b335ed5c256bfa3d69ba628dc9581159e7d3ab","aee8824af78a1fabf74f3f4957d4ca8be3ea7f471a6d5f562cfed0e2eb84da23","d6e0e86e0280e0afcd60395ef6b504408c29adcb2c3b245900fe7e53d1bd6735","6524509ec6f167247a2cd45e3762fc6c559758c07e1a3635b8c25ecf53d4bb52","ebdcf4f2d06ecaa7512b4e82d75b0892ee788e93cc90eec4b56bdf4af103e975","c8e78357eabd343df2a6d1ad8a9c122f986bc772443ab896b1e0fa855f0ebd28","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]

Anchored

2026-10-12

Public log entry

search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…

Expected log hash

13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"hat überall das Wasserzeichen drauf","rating":3,"review_date":"2026-07-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (2d214bb14438…), 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.