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.

“weil man sie nicht erst runterladen kann und dann die Lizenz eingeben kann”

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 3162293789

Proof data

Record hash (SHA-256)

2923e5836c604a2495454214a4b74f58955d7203d109055bbb36daffcc454105

Signature (Ed25519, base64)

U+Y1Kzn3FJkUVgSj3Iiu5LPj3jvKbxgsDUZpd39WC9vcg7EGvXANmWzwzWqSl/24eVrP6gCSBY1pzWFJe9DsDg==

Merkle root

ab8d4de5853e13d360962f03dfb915842a42e1c5601cdaac4f2b37ad0ba96b78

Merkle path

["292567783441c43c9d5ff573ee354d9343368dd68c4950fc33765f380966e42c","3997c42c33c51e37556164aa53c343ae4153f98b17a967641374b572a63668e2","e64b7de0111d3efcea9db9f29eafefbba0bd1671036613468bc4487679087d83","657d9bb69c95d4528c4e8da7bbc7e940d9d6fceb1e7a2ab724e7eb4e97f5e3ad","955d03edf609f06cbd369576c3941ff9c69dc9f279ec65d433b4db0f62797220","b35fd98b2e6987e524f754eb43414d39ba5767daf7be02d57c6211f3057f19d7","3080cc8c450c7b239d22c8dfbcd79e497132770136241ae142960299eba4ef88","ca9491aa9764ef93d7dc51a504685c6eac3743d0c42aa98a88afee39a149bdb3","cb654b96c5efe6fd9e8854b2fb7d3fdfe4cfb2e8649e652cdeb89040c6fbc634","7e36cb106712bda476c8c8caf0ddf755539022a74c9abdc2b00a90a55103a005","df2fea832264de3af2216b44e205b061dc95cc9a14e294f66b51dbb027e708a1","1f4057a151ee201b828d97e6a824c448929adabf69bbc73546bb374356ffde97","b5d1a48b6642f5e918335ff168c322a90c6461c94c3bda6ded76ea663842f62f","6b7938d0463f2b633e195d7021170023360849e40ff5e64ffe0633d28e084f81","90ac6c76618b09f3702b50a6410c80828bbcb4ead0d9d85dda294a654717f483"]

Anchored

2026-10-09

Public log entry

search.sigstore.dev, log index 3162293789 · entry 108e9186e8c5677af0ef…

Expected log hash

49c1b9c7cf9c0180248092c94f6cb48d5e59f6c65f471decaa61f120e90874ce 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":"v1791539611981","kind":"published-quote","locale":"de","page":"brand:threema","quote":"weil man sie nicht erst runterladen kann und dann die Lizenz eingeben kann","rating":4,"review_date":"2025-12-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (ab8d4de5853e…), 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.