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.

“Diese Software funktioniert sehr gut.”
Google Play · 5/5 · 2025-06-12

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 2893887498

Proof data

Record hash (SHA-256): e6804800e6eb86fa47f03583493db1782b8e60fab60b739fbbc49c61e19b0088
Signature (Ed25519, base64): HXMbUjAUwE77Atiw07Ri4CQSx+J+z6F23J5dxnNUcyfPblRvjSwo5Psc1O5PcSLkHfzBVISG8SrFUWWdD35CBw==
Merkle root: 2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88
Merkle path: ["e68353b95f2b597233edbf7c97c05a23c0489ee79b39d72a59705bbdbe82f45b","50502e8cd65f2becdc3e2507e2ad1279fe0dad9bb74308f09e522016e29cf7cf","8cfcf2949851a40c759185c9f0ee887a3428d02309f1493f5225f37da0c1c987","6b4424d3aabe321372c14584ecdfa058b6fe42311e9e533dc87e36ed40bf12c2","84fe29a1476f7bf9edaa9c5c4e3091a089bfa0374e18f7aa2376a106195a01b7","cdce49474390c3802045d1258e44c92e75e81ea8c22a294d356d9a58d6409b53","9d39194f9370e55b21b83b0afc5410c2754b9f3386d628912d62474d1670b3b9","a1d11f24a4e3b2330f0cd85fa36c8f30678a5f1f5d775e961db831b73a55a8bc","8efaf117ffb56bb8c1fb2de61de6e374a450f551a8b437268b500f20e2b46596","4aaefa4eb20024e4aa383f59cbd2d0fec42292305e1db86ecb95f4c9ff47b4b1","7aa45ce6be7da29aeca0302d172ca2874a01f87e6b4addfd75180817d87f4620","adfb7af951ab6d82fe2ac7465e5f822234f3eb32c74ff914d3090db1700baa73","34bf35d805c4f7af315854dc10a7a10ae0ea054d46dee40b360c3f04f8b8e60c","58a3dfc9ad8696e92f5fc9960e9c6bc4cc04e270091b574a948593298b33d1f5"]
Anchored: 2026-09-20
Public log entry: search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…
Expected log hash: 90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"de","page":"theme:concordia/quality/de","quote":"Diese Software funktioniert sehr gut.","rating":5,"review_date":"2025-06-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (2f068f3de56b…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.