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.

“Suche nach Nachrichten funktioniert leider auch nicht”
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 2543025731

Proof data

Record hash (SHA-256): 68946c8e17261628e7f1ef2ce09ff688ef06f1082f04d93833b083518ad8c147
Signature (Ed25519, base64): yJigjYo5KvQkZSIvaPoIxDk2IVLbqbRHSmoifAyYJ+qkN4EeAXfQ5PgvIjbU+XAeSBFfYlDt22DYa8oHQuF2Ag==
Merkle root: 172a3e0b3c9f8b02f52318e01ba6beb899404e00e91c15eebc4dea38467e1404
Merkle path: ["689115ebfe3685a6b632d50258d8b8b7ac9f5356ce6300c9176cae1694258671","6328e62e2bbe8ab6aaf59f0bbd48fa5ca59bb5b3ac769ea5b30737b4dfadf9aa","9becaedb8ec0cd61b891eae0f56832c646d43dbdde9ce5a9bd98a4c235a83b77","a074f914ddc4452edccf68ad590fc41198904af7a419a8e3b79ded5217adcd42","dbdf6baf74b234ef63793d1c1166c5befeb3cb34f8a6eb7bb664a5149fcba731","9b723a6b154953c57994fed21deecdfbbc88a1aa2b6e13e13652231a27de26e2","6599f7422a393cf16609164e4a32d032e7c82aed760dfe853a64aad3a20486c4","d8a7d99d019a38556233f5565580d32ceb0f9517c6b09837d48ed2be7d766972","eb77a1f79fb76ab4b108831fb1f236b01391a2583f5c261c594ed149bbce8cfa","1df24254daabf985a3444f93877ac13f73fb321fc14140b22586584f72b6fbc7","9b6fe70b1c1d3a8c4999ba686caa2ed21ca68281bad33f2e5fe6f7127e57520a","1f567a3fb36c78ae362612f4c99cae95ae4dd4ad0c6c633328b659341fcb6d94","f12a899e5c92b32cfe903fadd591410ed4da016670fe0a40b993afb550e2e37a","cf4d3887edb33be9d7a9e64011338d9abc8444e06d1f5332550f7686a2c1727d","7731d0ded4f51d151ea3e84474d1e27a6279e8756420c93cf5fec0abf7f11add"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543025731 · entry 108e9186e8c5677a8971…
Expected log hash: 19ecbe4a66d8adbd7c6057dbf6ed9be73485c248dba1e0c595279a908b3e8bea 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":"v1787283443958","kind":"published-quote","locale":"de","page":"theme:threema/delivery/de","quote":"Suche nach Nachrichten funktioniert leider auch nicht","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 (172a3e0b3c9f…), 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.