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 3220996539

Proof data

Record hash (SHA-256)

24a7459f7b4d692c5ccedb80a7240efa35632676fec6da84ea74dc8b7f8a510f

Signature (Ed25519, base64)

k+S6rW1IJDyVZDDixtl0D4UnoKknSqxQhoqWOZyIA2cbXj/sG2LnwiUv/Y+f2gZiCQSMWl3N280io3iD9Xo+Aw==

Merkle root

1b0b408c7cf60721bf3cca50f4b7f268b0858a42fba11906e486c6694252cb22

Merkle path

["24a5a27bf79c3c1c6f14dcedb4fbb138a873bfa42eecd8132c04780064dfe022","b9835409230e82ad735c28cb89edebda3b68df4f45f848e94cb77522c7eda1c0","272d7db050f83b578523b3fbd07417e3eb9707272c03d8bc6058cb66c4cfc1d0","8e000fd5e533d6e62167f48cb8a1a0c39accf29f4ff2b7ef8d2f26688b2d5ad2","b731c7a1a4a9c5dc589c221b54967aaabc6125c8c045bb24868551bea6f5d88f","7189f052750247ba19d0b0739fa35724e46114eff16bb24c97d493622d5fc69a","cb02d160de816b8e5e09c4b6d4e73a46c0b91a739d849bb9129db2806e18c2d2","18a9d8c06b8cb251559f1796e110fe89e05f87ec493c36ac8d63a19dead33e74","151811f7fb2db4ca93aea6cb24187f63ed14ca56a57717aa7e35dc73722d2f02","77f9564bed074ac2d2d3ea6f6806c04368e442d5aa99fa94e3807e1b4a755a07","8501213cff22bdd65042463ffc599eb00a94c6bbc397e02df36434f1645a4b73","02a91e84dd419fb91142eb41d22148d6364f823a8ddb534904911b59b684dde2","bd64ca269edabfbd30efee623435236838862399942a0d08ad142d3df41d1142","8547750c311d384cbb1a945300d6b6fb4f4bd2b78af7177366b3baa4b4c1e724"]

Anchored

2026-10-12

Public log entry

search.sigstore.dev, log index 3220996539 · entry 108e9186e8c5677add5d…

Expected log hash

00694de1434e648cba57bf07fb439ed90ba501083441667555bcf619bf5edce8 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":"v1791779426071","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 (1b0b408c7cf6…), 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.