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.

“Es fehlt die Möglichkeit, innerhalb des Kalenders nach Veranstaltungen zu suchen.”

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 2515095234

Proof data

Record hash (SHA-256)

0bab909dd7b3ea1fcd9ed124250820888d0ca252b8fb6cf1dfc5dc2645073b01

Signature (Ed25519, base64)

7+yLF/X7KzufT7JTeClsibAA3r85B6DI5BfBaamsH03840sn/njOqeP7SPBwp2QN/pyBrbnyE+X7xPl0JSuiCg==

Merkle root

d9909e7ff193b610d96d9930fa8111baf2fdaa08b732478b03ded2b9e1e52914

Merkle path

["0ba889e48cbe989a57f58ffcd23a3bafc18b06b36481d3c7c3f6ee9a89dadb91","357f96458d2bd5731e71b3f83a94f8ad2918879c6300027dad5bdd67b0b09916","760c5cbabfe1dcc79546f22597b90e8a4a1a7b94a4916098bd8e179e8b824cef","4035a0ee82282e1425a4b48a8f192162be6d94a4b08a84477b68a8748c8a954b","a3ba85b740d65d99c6b333b470e718bcc3af0add4c6bad1406c87e395026c666","c26de954dd9c96e12af312a49b8bc66fbbd0521c529322f8377f94ea91e2bcfd","1dc424d91824b73cbfad8e5e5c952bea0e14f7096f1d4d397728778f10ffa2fb","7b7198caca6c668accd315bbf54a42c421e5e335d89ab77784e1823c9ca09edb","363b32d9fca24467f169156bc513b14f75c536a9025f7aa0ed76e64799c78973","a50e2c0ef16d37fb37879fcb4e8467072e3228347f7e39c1dc9ffd1ca8460642","6dc4788b7bfa91d0a3acacb71f48e44e367fe199cd81119c5bda79c28e8ab3f1","d0c545501ec6b40886bbd7f01a63b389d170722a1f58d9eb61157cf85e3ef9bf","717fc4742794be36cf72805fd12ab627b31b870eb5c244ddb55c2504c3c85510","c8967a31c6292f2cfc7ed9c390f7083b1880ea886157cf89b881616d7130d93d","2aa33c224957c89d7d414cc43142ae7c4368efde4f1a1b6051ee910ab17bf997"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515095234 · entry 108e9186e8c5677a299c…

Expected log hash

6f0abb2e15f57da153d99eb9fe756fd2540bcac51fcddbf7ac60c4be3cfb5f7f 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":"v1787136684512","kind":"published-quote","locale":"de","page":"product:proton/proton-calendar/de","quote":"Es fehlt die Möglichkeit, innerhalb des Kalenders nach Veranstaltungen zu suchen.","rating":4,"review_date":"2026-08-09","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 (d9909e7ff193…), 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.