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.

“Probeentnahme - 3-4ml max., messen und abspeichern der Werte, alles super einfach und dazu sehr genau.”
Google Play · 5/5 · 2025-07-11

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 3258201873

Proof data

Record hash (SHA-256): 7f896e7dc94205db7f85903a329641c69dbc01759f674a992f691ef4e878dfa3
Signature (Ed25519, base64): VkM8puCM8nqjxA42Y31YCWyrwsqCU9nE5IP0Q/KG/l4dcH7Q0CXDTeDH1P2ZWUqxwhBuykkXnTYRIj4ezzIhBg==
Merkle root: 07e2d0de1409df9008c16531abbe2f8515ebe8e55b87a042e18a21958771618d
Merkle path: ["7f85ce807e4439ae5082e2e33f9b28e8c906c80acbe558fe955dd1c70a691276","d35550495dc5d66dba6c67ca4ec0a78e80349ce4a4bfa4a3c081dbc7c0d832e3","a4673fe04c7cf5f338f04f1878e1eda24080fb741b12a822242528bda8f85fd7","bf18d5b4efe5718ea9165c79514ad5bd419d4050285eb78a7295e99540b68a75","57ae81c6c2dd48e22ed42e0143f417f3cd7d7285f19176e21be895aa5bed5be7","e83c2d5fc87784241637eeed81050b0f2bbdbcfa691a9f4c7a1b9ab41b9e748b","d00b5d48da28b824494e9cc5e86082ca4692630d797e9016445ae050ce9c708b","7b021d34b7f98b8b8d9118726d733c11ad101f596682d85d41068e42a22a44f8","073ea942b001933586770035da88a56489589c9cceffa4e280e5e1b66d278a65","c7e897269c513ea81ad7041309a2574410e491cd71d6fc211eb59bef9af1c115","ed153dc27771930bb31bdb9d7a4c9dacf09a4f3c09e9fff34f731c5460b4047f","dfcf0d17a99a793d3d6be0765f1359b7ade022d9a4367681e81621bc7192fb46","b87e113e6ed1314dbdac88acee613bcdf5d1a2c5de9a94d1c9f08563144bda53","fd7778befb9f979134b4d8a1dfa78827e64c761abd83cab9d5ecd5bc01d8ea14"]
Anchored: 2026-10-15
Public log entry: search.sigstore.dev, log index 3258201873 · entry 108e9186e8c5677ab04f…
Expected log hash: 205b794967d70c4ec2534ff3766e47506acf44c7c68740049459394876120dfa 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":"v1792030899870","kind":"published-quote","locale":"de","page":"brand:anton-paar","quote":"Probeentnahme - 3-4ml max., messen und abspeichern der Werte, alles super einfach und dazu sehr genau.","rating":5,"review_date":"2025-07-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.antonpaar.homebrew","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 (07e2d0de1409…), 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.