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.

“Die kostenlose Version erlaubt keine benutzerdefinierten Farben für Ereignisse.”

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 3084008230

Proof data

Record hash (SHA-256)

08aeb2cba3fa8c055819a5d4d2ef951046c3bff1fe286ab916e52db14df975f4

Signature (Ed25519, base64)

a9DXiCCpvNsN6zzip17RpPK5epP5nMza23gzVZilBNTENSzl3yPMCNdlz+/bRsbAg/DhKS2QKnfFzWDKi9ToAQ==

Merkle root

c954f278b03f0ddfeb806da3192a945ea74ae5ace31cdf4f5c03d62f9b9c9c85

Merkle path

["08ac48916d704fed466411409d8e29cfce8343c020f007ad85cf02d61c08f3c8","9fd8dd1e52b1f5858055270c9f0d89fcb4c57400f986aa45f82e9774e85cc873","d3560549b9b5871380c6e440cfabe6bab71e65c6bf55e15c4d83082e13ba0c1a","ec238e95a61dbc266b72524300f54a5941a47adec35442b38cbf52f3627b74a9","224e83e54f6bb5b8d3348a83809ad28e15f806a78760c513a9a430b1ce962ce3","c776d9cb6e3fae0d36db2e098751902da81e1b95483080ad8257043f027f83c0","e4646167d6817c08c3f1f11891e22ef29d1ddb4c0a26a96bec245dce3f71273f","75aefd02e2addad36b04e3e9a7c96ccaa811eb47f440b63ce4e3db1a2457c970","fb36f48c20b78f31950a529deb4f88b32c1a4f31f3a6b1a646fcf0fba55676d5","57837a7c2810d931abaad1a8e22cbae3e5906d366eb604d13d5ef186c0c3ebbc","58a4e6fdfab4ff93af1cdc8a1c07fcd39711f9dbe9835a3b625a441237358dea","c7125ae20103191bb1f7fb84409a144584e4eda9b031cfaf345a6286230c5535","1d0fbbdf6a8b806d2f18b88d9ff84b283191f14c9ba960ee1b7e6a525125a681","47f7935efde5c1916b9700110a56050667a486da6d01efbf1be7671f42769e58","2d9d4b958999e2b40d6b124a0a8044720e0313c217d237832e6b1171798873d8"]

Anchored

2026-10-05

Public log entry

search.sigstore.dev, log index 3084008230 · entry 108e9186e8c5677aea31…

Expected log hash

6a8c2df90f09571413991731949dc32a09a60f9a75e1342827498da2cbeccca4 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":"v1791183579482","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Die kostenlose Version erlaubt keine benutzerdefinierten Farben für Ereignisse.","rating":3,"review_date":"2026-08-05","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 (c954f278b03f…), 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.