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.

“selbst die Zustellung der Nachrichten ist nicht mehr gewährleistet”

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 3124210377

Proof data

Record hash (SHA-256)

0e48f2554bb5eb7a27049e04bdba06760bda17220e691e2a3696d37245517306

Signature (Ed25519, base64)

z0vBvXbyKro5zh/edNpDWC4nqWFZRApamx8k63v/Uvd30qJyHToXPnHXXKzP1xf9e7Ww3r5Q304iYVIFo7iFBg==

Merkle root

3b820b0e91b2475ca02a79fe65f1dcaac35af570ee21f4c868099b9c17e17c1f

Merkle path

["0e4d9b3337513ab331d055ff3470db7d058f1bca2da817cd9d35bc6b4ca1bddd","e58e61100f5e01c2909e5ee7ff18406a9bdc4f9ef61da475cfb7905fc3ab17c6","7f3500ed9b458bb154905088486ae038abd8b0a4501fd8ec65febfde4956f948","2b7d4eba029e0bf34aaf3c0982b7302eda0f3b980ae60f421a728f793c718661","25f9435e06d82e8ab20e653d9cd0e8ceceac71e443fe1cfad1e3c3a80ebae3d7","9ad44005ead549931dba6c8c91f42f4caafb316ded6b3669a88b9b30a3cf5034","8656b470a4b45515526c6cfa7f6da3cb21966e60a1ab1b033d5eaee97afb8f02","3704b6191a8e98dc72f8c3a3967368d70373c98867897bbec8dda70d4fe914ea","88a4a0ef2cf8464648fdf87ac65f3b6e5847482fb94235403bd96ed822c33131","ed508069095ec7117631564ea38f89355536652658babf22c30856487c1a4bc2","89db876a53fea154da0cb85b4c6f363d9ef2250349f7874215141d599e56a24e","908905ccf01aff1d877120de1672987ae5d5a21dd262fb78ac6d3eb20ba17367","3b28c91ed1c07c20e7a9ea170d94b917c6d123814303aca3f92997be066c952d","e448e4cc350a9a69a05538fc74a8236040fbec1cdf0c4908e91135fd4a29e380","92de2c105ee268f1f08dcd9d0a8fc946130cef7b39b15a2b5ed0d7209687c9ac"]

Anchored

2026-10-07

Public log entry

search.sigstore.dev, log index 3124210377 · entry 108e9186e8c5677a0172…

Expected log hash

20a5241ced0c7b94303a7b8002f1aae217df3f1371aea54ff5745a148bddda47 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":"v1791349684588","kind":"published-quote","locale":"de","page":"brand:threema","quote":"selbst die Zustellung der Nachrichten ist nicht mehr gewährleistet","rating":2,"review_date":"2026-09-27","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?see-all=reviews","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 (3b820b0e91b2…), 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.