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.

“Das Widget könnte eine deutliche Verbesserung vertragen.”

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 2515282333

Proof data

Record hash (SHA-256)

0b673fe6ea46959864df8e6ccbba2b9b1c37ec727d494c3acb7883626871d380

Signature (Ed25519, base64)

jVp4HS45GMeJRbRAe+ODiMNdmxga9RmaWG6vQjUrXRzfJSeoy/aPLivqwEs+LfKQWzVfqG6IVLV9PLpr/yZiBA==

Merkle root

ccae92ceb3dcfba104788424188fa34a8cb1410075ff6c1a21fa513e89f0c4fe

Merkle path

["0b6bf21efcb487c7d34c83b2b5d5161600c5b1700445ff5d5c660cdca0530a22","df5866159c19037715e556ba1fe8014ba0a5e59a418d6908448b441b68b08f90","d4b037c7976aa5d9f8ff30ee4af2c3e664ec1e38d4a497836522f53b27a7910f","a4199214654fd3ecb71ccc91f2a3aa126da21f53fb6c6e72ef901f6dac210f96","f867cf5412af14bb45486b77ee84965b0b2ddbcc110b198890c95b3e86cfffae","e47101a02970824c69c187dc0a90aeddf72c192fcaa58b580521ec2b1db77c93","93aca90214cd9d1f786435364ae30b77ea71ad58559e9f8572457a53e8dc3032","53cd58f1ded133f3557a7ed07870a26508bf845c50ab9a0c478ff181020645a6","47029499be6cf619312be7b725e8c65c940ce2844e529fed4db92bf6605100c9","c8ca34d6b77312cd7835277953b43732ca79da68c42f341c818949b087eedd71","8ef9eeb2de8a0c7e7199cf72f40f8b05fb3c6a5d118ead4355553313e5220f01","94bdad4d5bf7cdcb097f825dc6c437d80f4848c297dde14ff164b3194ed492e1","107bacdb07a3118c4b3abff34aca5373871d7239f682906c5310a861fc9920d7","818afa9b60a40d27c2e88a8e5f62585c079335588148aef8eef246906a1d9ee6","f73291c2ca924ce4b3764e4b6ff1da65a701069f04fad47c52c8b693a0ec7e41"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515282333 · entry 108e9186e8c5677a6652…

Expected log hash

af455e73500113c158c8df9793eab703ff863c9c98fe38560752c9a1772810a8 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":"v1787139531268","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Das Widget könnte eine deutliche Verbesserung vertragen.","rating":3,"review_date":"2026-07-27","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","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 (ccae92ceb3dc…), 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.