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.

“vor allem beim Versuch, Bilder oder Links zu teilen”
Google Play · 3/5 · 2026-03-21

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 2514629481

Proof data

Record hash (SHA-256): 5f9b60e97dd1ccff56598f6f0f963933d16db9fe028035ba3c83a585a06aafd9
Signature (Ed25519, base64): oAyYka/kSs7Eepm8oIRUWUonBNyzp4OY6qARXcT+8AYD1SNFDUvCjAUoOuLX/CtSEZrHpLynbgjCZbLwVjmOBQ==
Merkle root: 3aa12e5b2bb49befac906908c9a841e9a421f12d0bee8acab9c1f906487adff2
Merkle path: ["5f9b9556e3b8959e9fc27a79211ca0fa9a57b4aae570f03e36fe85c57fa89a5c","c58e836e8f371bc58933ca5237fa3a4fb8e18fb57f8a5873ae763ada3261f673","ad8cdee8b3df1c84f78ca3f76002221a536c493b185a640d46f7d90d151162df","52f6682c880885018a9b11d7a7d0896aa3af3304f74224b2035d2b56eb66b9ef","5b4d4770fa39b258518e992c16942a818fecf9342c084229f4a38dfcbce84982","cb47666205cf157a4927314b516c1c413d0375cb75eae20e130fe04c389c53c6","cdd98686aaff2f4a3a9166fd2e884ae005b984785c775769e89898f332506a38","40e3ecf5e59ba7baad52495e84c45114e442cdcfcf05b0976721e059cba90a0d","71bcb25f8728443ced12a5ad1f7beec9a4b371ab93027129af43e3fcc64ebbcd","aabca791c78deadcc01459736b0ff7721e5ff091cdf3bb29e8af73a90c5f8cfb","017cfa23e6573ca802a0e0a59eadde8ec4fc7cfcc8a919e905bc86249e550129","e7a94d04437720fd8cf992ee6dab38693216414c2bb6c93ff213fee7a308d432","f012a8a26dfa958fe562e54b8cec123a4f52269d633080fe9e680be84eb62329","2f00626bc88d01c042a52bec5a9d951d8fcf3187df280beda8f094e8085a220b","6099970369039e9ea9943621e6c4ddbe6cf64be652afb6debc70debb01455286"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514629481 · entry 108e9186e8c5677a8c32…
Expected log hash: d923130994e40329302180560c0ed5b43e4400136d037befc932b83910626f34 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":"v1787131980797","kind":"published-quote","locale":"de","page":"theme:threema/delivery/de","quote":"vor allem beim Versuch, Bilder oder Links zu teilen","rating":3,"review_date":"2026-03-21","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (3aa12e5b2bb4…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.