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.

“Dies ist der unbrauchbarste PDF-Reader-/Programm, das mir je begegnet ist.”

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 2969645630

Proof data

Record hash (SHA-256)

fc272547e0ee986d61d90d7c802808e3f883277b1f1009cfd56e1d4be574fbab

Signature (Ed25519, base64)

cGZT3PHcJGd9V6EMak+oxFXi7hW+dBPJn2296ZxiBQuoykviIqWH5COJoLugEqpC8/DIk/4sh8gLikupVx+HBw==

Merkle root

714fd5c453665fb7238b83bb755c09ceea4f24c6bb04f621046ea8b9d5da1a83

Merkle path

["fc2c8adfbadb8ce43e83ff51e47e47b831b87024c5ff43c7561e41f05c95b512","a60dbbe6bc2df813919ef00e9352877c1af9b1283039a747c18f369b34387986","737e0f7f08a616aa6b1f652e4f7042fd91015f7bcd756365983f33ba1ed8cfb2","1d9cb8ae1960bd19fd3efa64ace9da7528ccfbbd7cce8afc46a99f17a3b76c6b","b3062aea878cfc68d5098215499ae6fc086a49cee5f12fc0d388296355e500b2","3e1d349b75aa96eaba3283464ac30dd3c7b0ef68e8e238efe0b7d329f2556774","917cc82f72dbfdeb6c7d1787dc048e5389a356d9c6b0c325d428f29fc1c245dd","0c251f8cf0265d0f8ecacc11a88683d6df487bf3588d7be460c9ac6cc4b5ff7f","7f8d4d29e55a9ecb4966e6dbb5c1ac5b42bce00c1d3c1e370b34f38b53946e28","2a1d34c12b93c6f36fee56055b16cd581414a32cfab62a2c6122e3f52d6152ad","df9b5792ed07596b80cb0bac4d7da222125d9501828d0d04db520911d9f71e8c","e1d956716884b7b82d5fed93c448d92b9804f9a390d7d8b8b4fa689cf2dc36ce","92b80907e64b614af7672e18ed96814fc938e4d9ff3446d22e6bc3b2e73f44c8","43b27df08fe2c6b1984decc2b66a8217029c8dd3397b5629394dfa0125d9da8b","63158f878f18fbfd8c365d55048a9cce8cd0631f6b0e87630c3dfd5c86aff59d"]

Anchored

2026-09-27

Public log entry

search.sigstore.dev, log index 2969645630 · entry 108e9186e8c5677ac05f…

Expected log hash

9c269d3e82dba16de30aab3330968f6013b6b7908bdb2f7b3ce0083771a2fe3e 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":"v1790397996853","kind":"published-quote","locale":"de","page":"brand:pdf24","quote":"Dies ist der unbrauchbarste PDF-Reader-/Programm, das mir je begegnet ist.","rating":1,"review_date":"2026-09-23","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6ab3eef05a9cdf1066b1ffd5","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 (714fd5c45366…), 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.