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 2543857133

Proof data

Record hash (SHA-256)

6a9bfe9f92d164aa04b792d5abd46e14f7df0bc16a234e86c28890f130384940

Signature (Ed25519, base64)

FJYWEeFmQV1sKmeWQ1QV98JhaLisIh4nDrvvzUBe6qT4knperXqnBbSjgIW27boFAPdy/p46eu/+mNgxF02BCg==

Merkle root

cee60bb6c0816d1bc69326ea12cf0c5c00cbea13afa283147bf24b52e30f839c

Merkle path

["6a9893983ca05afa208e9d99cdfba41aec8fd39264fe55069feb1210f239cc6e","3a6330c93e89f343a79f4c8c9c0b8dbbe7b67340ded15687100a10a1e7b2c111","97809513c117380236068ba0184c4cc0083ec16e03d4b5a5037b0106136e48a3","943d29552577895e119f5076108149a63bedaa23bcc955cdde2bd75833bb8b32","7e700163bc496edfaf4ccbfdb40da335e79995f83e029c5e469d144e7c80b260","2cf925b3cf4241f3ad6051d375d42a3ad6a1b3fc6b30fad14992eaff2b16eb03","042fa610e71f47e16b4c16056b7e089d0aafa4e70154520039bfe2ebc7139569","cbe9030a527e690ee468c0c86e6c37d5715c564ba3a5036beed1c5afbdb6846e","96a4fb7e24cc36e03c0103cc0e32e11ac26df7e536f90e0e686d00de3cc80543","fcda4e778c9c525b056ec8462cf13c40224910b6abace5e596b38b6f460b2684","f071ff0fe90eb090d530737bea647a49c6ac03cbd9de375459cee4a3eac2f1c9","a38c05fec9f7756f543ce7316369967ef218f420bbd707b00cedd3722b7b49cf","1a634c86608f8872bc200c568ce8705aeceaef5e6ca2a6b293c8a08d19857cba","6d215dc9023570789455be9902e0d62b0310ab7bcbe811daa69263c90da55ffe","57e3801fc0af4bd2492130e334ef2d0425fdcd10c95109df38ad0d371e279fbf"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543857133 · entry 108e9186e8c5677a5231…

Expected log hash

d8e1ac8b740526c2915424d7f7c6bce881a4ef05d0a3a3dbd88e4c760e36623e 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":"v1787288037224","kind":"published-quote","locale":"de","page":"theme:xodo/quality/de","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 (cee60bb6c081…), 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.