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.

“Man kann einzelne Termine innerhalb einer Terminserie nicht bearbeiten.”

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 3666871737

Proof data

Record hash (SHA-256)

09e79eb6d40a4ba5808ce95dca6fffbcef75ad10909926ca0dd44723223c34ae

Signature (Ed25519, base64)

rVB2PmM5QyfWrg1YRtlCzy4WSXy0a2B92GTxpwX1mh65IHKIGzx+Rxs+5ZWc04jiAZ5rbpa+FVu9eItOD7q8BA==

Merkle root

765f6792e648cc782d6d33d8a368e434d51bb0aecf5010ed674422d1b3abddcb

Merkle path

["09e9ad80c8d024aa94d14c290dc2699e5288b6fcf4e7e93bb996b8d4fb1f86d4","c4f5046bd1669338003b8597da82b66aa74704497109876f5b28a4e51d3ecb07","9e966d96f72283bc35f8c69dce07f12a57af25982f7c137984fa66c37970184a","c04531c6e06615cc106d9912b94e6d8f83d7a8d010634eee463507be5d45410b","66dcba819e951fff494c563bd3cdd6b9c25a74a1eaecc56b3c3301bd495a8b38","980bf3696341fa776738258484823cdd83ac4e833c233e91dfeb054564512019","175745e66e3406c1c4065b61b90ed25d64354785e8a1dab3568cdd05c67246e9","066c8d72ed411ac6ea7259f9d5a3d95f84effa9ce4c8674e17f96e2cc05094f9","6d3e45ec0ce5e52d394fe5ab072afb38fa3cdaaec983f23e8b6a01483853fc65","15a6413cdce21ee0b73e2c3b6c3e65f89604081c8cbcb32c9dfe16fdb4548715","572b46836ff556f8ce2d140b158240e2224652f198230639f0a51d1065baeafa","0b169951b1dd93e46d36ecb5066fde6632414f597d3b3684131ab046c3148b10","0fb11801a090bcf458239f4dbd48ace9e86d9dc80c3156e3c0d61ce00ebe0213"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3666871737 · entry 108e9186e8c5677ac8ae…

Expected log hash

47ce816b42eec209ce807a6ff7fc4ef84557e80f31f3336ccd5d6d00a8d2a9c9 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":"v1793702406981","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Man kann einzelne Termine innerhalb einer Terminserie nicht bearbeiten.","rating":3,"review_date":"2026-08-13","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 (765f6792e648…), 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.