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.

“Aktuell scheint ein Bug bei der Kontaktsynchronisation zu bestehen.”

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 2514602687

Proof data

Record hash (SHA-256)

643bc2ce11b90f17603312d000a0ee757cd9ecdee2549b706d4783dce1538eab

Signature (Ed25519, base64)

X07iNU54ugfdC9ZJj3N+XYUKybHFKsNqHb1x1bKHUZsPIB4k18zYNaLlHj0Ym5sZEbMEy9CFX0k1EDPKJPF7Dw==

Merkle root

749703591848535a8600340214debbd99b61273e3bed402bec28b292f90ce9b6

Merkle path

["643843de7ee4e450cbb5b9e06e301b7bff5cd88c47b5c78d67130d7995f17d52","f2acb0bf992f85b2bf86d1e61e34b52cca2f0d0a812750808e9193679612bbbc","3fcf51aa9d1c9b73945af289e8d251255d2bd2df0197c524661ae69742460443","5bcd05b4f2f559b6bfa89f2044e4d16f117991967c15218e370f7eade5765b28","4732a0ebc8aa21d9a9dbdc86b6788d235cd5ef688f5c90b4861cb26a79dd65bc","0a967e891a12ab667285e76a29ef9569da9837dfd869d9463ec3b11dd0d26550","26089820626aeae201de3ece52a84ff1924e95f346b79ef856187444fc92f9f3","1c8cc90541082d4af6bbca52b9c954cb16bd3442380eb273126007797feb22af","1a24586693cf8dd886c5aeeb344f091c1849f8946b0706fbd2bf54acfdecd8b9","f96a20b07e8d25f3685081e075da9f523da0bd165e347e159a76e72d86981f3e","3f97b00a24a7138b54d0f198bffc002b268c9474918f99ac9c3076551ee51f78","cd043ff06bf9c567c5552fbc40fc5eb9fba5cfec67ecf73cfebd0a633cb9214c","d0a145fdcc79a1039124c214c6d7364b7312550014eee4a8d0cd6c39ac03c378","0e5993cd09976fe1433892fa8ab65a03ba04fe977e193e49bb79ca2557fb61c7","bc5d1d560a30e83fe0f1b6a9452dc46dc135b1a7f73575ec3aa5d459bb76fc8b"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2514602687 · entry 108e9186e8c5677ac525…

Expected log hash

e53e7f935eb508100ef1046b60c784e0bda15dd54afae176c275a97cf1f64052 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":"v1787131269839","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","quote":"Aktuell scheint ein Bug bei der Kontaktsynchronisation zu bestehen.","rating":2,"review_date":"2026-08-07","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 (749703591848…), 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.