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.

“Mit Threema muss man sich etwas beschäftigen und probieren, dann läuft es perfekt!”

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 2543857133

Proof data

Record hash (SHA-256)

6a7cce9d8c12735eed479b934564e1af5e85c968cda3363dcda4d7b501f8932f

Signature (Ed25519, base64)

o55u0HdG+DAqXKbSZMsAH6lGt9DmuBe1xJyM6sjWlvyaa2jLDg6qLdMjHDLWdJCZQqJjBbcO/pqosj+a3M/XDg==

Merkle root

cee60bb6c0816d1bc69326ea12cf0c5c00cbea13afa283147bf24b52e30f839c

Merkle path

["6a7d0daa9ceed49d7c773d82dbf98082116f427cfcba7d2b5bd1ecdb29e99964","33caf976f1cb6d6f029a0752b71b6f78b808b891b2e8d4c29bd3c2226345fcdc","be52aee460cb96206c5ed9ee39612919516a6bc25eaa4e7a2e05aaf696d8c8e1","ab58ddb875523a0798bf36236e5913d515298e77a6265eead0f854758e8de66e","7e700163bc496edfaf4ccbfdb40da335e79995f83e029c5e469d144e7c80b260","2cf925b3cf4241f3ad6051d375d42a3ad6a1b3fc6b30fad14992eaff2b16eb03","042fa610e71f47e16b4c16056b7e089d0aafa4e70154520039bfe2ebc7139569","cbe9030a527e690ee468c0c86e6c37d5715c564ba3a5036beed1c5afbdb6846e","96a4fb7e24cc36e03c0103cc0e32e11ac26df7e536f90e0e686d00de3cc80543","fcda4e778c9c525b056ec8462cf13c40224910b6abace5e596b38b6f460b2684","f071ff0fe90eb090d530737bea647a49c6ac03cbd9de375459cee4a3eac2f1c9","a38c05fec9f7756f543ce7316369967ef218f420bbd707b00cedd3722b7b49cf","1a634c86608f8872bc200c568ce8705aeceaef5e6ca2a6b293c8a08d19857cba","6d215dc9023570789455be9902e0d62b0310ab7bcbe811daa69263c90da55ffe","57e3801fc0af4bd2492130e334ef2d0425fdcd10c95109df38ad0d371e279fbf"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543857133 · entry 108e9186e8c5677a5231…

Expected log hash

d8e1ac8b740526c2915424d7f7c6bce881a4ef05d0a3a3dbd88e4c760e36623e 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":"v1787288037224","kind":"published-quote","locale":"de","page":"theme:threema/price/de","quote":"Mit Threema muss man sich etwas beschäftigen und probieren, dann läuft es perfekt!","rating":5,"review_date":"2026-07-14","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 (cee60bb6c081…), 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.