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.

“sollte ich immer mit Wasserzeichen eine Kopie anfertigen”

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 3162173160

Proof data

Record hash (SHA-256)

251d180f7609c9e32a0426864af6a6f5a8cb9f8e22fabe316827857377dc1e68

Signature (Ed25519, base64)

5bwfA4WsRwmArJ97z2C2Z0Io3Og8qhAt8EbBEmcZSBMwWju4KuHJqEvPiDNeEyafpqcf0P3MT8XimTqMbyZPAA==

Merkle root

47aef0bbc5d347d2f064428fd7eda9e99f7cea2d49004267bc87db0e45c42023

Merkle path

["2516c37c41b015561a80b149074aee588a95aa9c141c8108772bf2e2557d6f6c","baf7029ee3b913d0993ac20a6426a40e54d7a631c0a90075ce09e7dde70ff155","4d30a39d0908bea31ca7374e3e6593049a25f0501818f011b64e045bad99da46","12e40b5df995a92ba232d39b0913a19dae1da6292ded2b55453fa6d28923e8f7","f3e0a2fbb0fa57e60ecbb75b13f599d88c315f06f946b7056bda4f37a40382af","245edb4ce4a4c2058a9f94e2445d820d83fe2ed6dc6d78432e73b513d451d41c","5502b96d434870aca883d894d51f4bdec3f74a6c094bcf99f14e7863052c6004","1df03aec370fa9abf23f0e011e4b5c414014fdfdd2d0bbda3db8e5af6ab4e4a3","6b892f5947fb7f275bd59798e65540d719d00bbf2e70b4524289e42d9626eba0","4c52d2937cf2aa7c186b4f613f27ee8cd2bf31eaff59369cc480483c31688f2d","532c328f6a7840b801a525450082d82a43ddfa2af03f80451b646d19105712d9","9ce9da1fc4942d3216ef7e34b4970b7f92c10b35f2bdbce79226d95a000bde9c","e3337465312a8871a96efb0ade03deb67d9f2b05a969c667a895567781acf005","0889ae3150c7685b34e529b715a23984c1ad15ae15f158815b083df85c4c26d0","681b858a978b3dea64df3700a937a058d6290a8e519185bef8ee7388d7739dda"]

Anchored

2026-10-09

Public log entry

search.sigstore.dev, log index 3162173160 · entry 108e9186e8c5677aaa5c…

Expected log hash

00d82a97e8d5da8f3bb4a78d598390d6b030eb8338f0e0735ffde6aa5047ae68 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":"v1791539060014","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"sollte ich immer mit Wasserzeichen eine Kopie anfertigen","rating":2,"review_date":"2026-07-31","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 (47aef0bbc5d3…), 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.