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 2514083622

Proof data

Record hash (SHA-256)

0ab412104d34d5b17281735b7630d4675c1bec64a506a9010bb4b65b162443db

Signature (Ed25519, base64)

Edjc1Bv+DO7GQzETnFpGXu/bHJXdh6rUzejdngontKZdYc+4Q6onh5ydnXXQ2+AgkESZcUqHEj06zGN51Y8/CQ==

Merkle root

c35385e3159410853b606ace3c93abcb561dc35874bbfae2272c5b0050f06a48

Merkle path

["0ab43b86e7b1a077a1fa0fe0868156e9fa6dbdf8f0fd9f0acd70520dd2a9453f","395127de3df5677e77ea4c33f10288f93b2dd1726581a41bec61a15d2b82aa0b","06a244b31b68b5b445975bbfd5993a0aa7e4d2c1809b622d3a361ddc45f124c5","92a7b81fe6120ad525cf59fc5ab9d05cbe9d005ce8a18e94297d92f1e28334da","82a3848587027f729c6fe9c223b028a0400da7447a7211b68d4cbbdba63dc003","d149b74e89b0d7275339b593092c36dfa15c3e8b95031ddea87b5c7d1f518d62","ceec55e0b2f550308018b886e052693b08659a565ebed859e3c714475bda4b02","437a104f508df12910af381eef130261255b2c0dab52c040fa4a4ce30d2d3b95","001df44b7e4822618f32f761c0d6a911ddef9c588c9ab1c21050d53b4dbdd333","10a688be2d68b5c85e84c217ff76e136975d86bea80e740f76fbd37f57297f6c","bc703747791aebe627643a5e26436245d626120d8d1e30518dc7becec0f2017a","d5b1417f0735caf720f0245fb0f2b38ff3b2c6cac50548cbc860e0e4bd82c2ac","483af28031f8b50597d7da26c72f1abe6cb7a0a31c33e2294be9fc7d8e6d06d2","b0eaaaf0554356daf48535f981c97bcdfd635e531452842df23420c0f264e90b","19399f0af13a2147dd8ceb83692caff2214adce3d49571e366dcfb3633df2667"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514083622 · entry 108e9186e8c5677a81ef…

Expected log hash

eb47f42546fcc705387579993679cd6250c0b995d01bbd10805cb4c8d66efe2c 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":"v1787123762743","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 (c35385e31594…), 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.