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.

“schlimmste PDF bearbeitungs App die ich jemals kennengelernt habe”

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 2543700701

Proof data

Record hash (SHA-256)

6e3ff581b609a9e200b543b226a50518dd5e50afea6712fee4d36357d3de5f57

Signature (Ed25519, base64)

Z7O/DTV3mHMMojJprpGQy7UEMMqfxEdaGrOPw4GXkGRrdFTXH90PsgAy/lWRdDwS1ZR1MRs3YYgJeBnKk2FBDA==

Merkle root

c921242d78a65e026e3281000ec5ef04ef930758058c4fed3f79f3b5ef992cde

Merkle path

["6e3c2a3930588602041dfd3af930c56c03ef43852a6d48aee37ca7bd87453a98","27e7fd409e0e1c6931dc47b6643578f338a5af9d2d13ca0710d5568fe70c81c1","3fe28c007bedee1efcf9860594586e478ecfd64f5073fe76c1e13a0a821b362f","500101a297c456e6549288802bf4b27e7b9242795a07f88659a3e5815e95a62c","70a657b836a87a2f8f42a01057f73271f5bd443f3b81eaff8e36d1248ab4be1d","82589bcd0ee9bc726cf2e7d52418c0e8553c5f2d80e199aae114879b2cf485f0","6c0ee23248715855d743209a308e7eeb11be6c96a596bb3ab0fd9e3c021f2da4","b726cc7aae2b3f173b78d12bfd48bc9ea2a738c047859f74bb4bf6d8996b4ddb","09832f3b3c7ff437804becd9bdfe7c2444736042f2019447a7c86d28ab62cf62","02faf15951b8d75f7e4261fe841fdca6e6d635b37c56f72d60e8bfc6a970c3e2","a45ab0b3422ce68deecab893ec226571ecb3381413cb401d520a3bdd4e73f40a","c7f1bd682d2372a571af460f6db6329aa6d4392056d2c542b2f8aee42d41d110","6b2632561b59cd0b7b7d163c35b619821251fc87f905afdc68f4b8821607ceaa","11c55b906d5338fe2597d0d6abbdec07bcd15a81c2687346b92acf8d9db0c2f7","522d5a6bf348351e5632579ca190fcb390464957ba4b4698b399695ee13b67d6"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543700701 · entry 108e9186e8c5677ac7e1…

Expected log hash

c1abaf0323b08bce2cedebaf1993162920ee741ace8973292e7ffdd13aca356b 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":"v1787287374804","kind":"published-quote","locale":"de","page":"product:acrobat/pdf-editor/de","quote":"schlimmste PDF bearbeitungs App die ich jemals kennengelernt habe","rating":1,"review_date":"2026-07-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (c921242d78a6…), 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.