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.

“An der Gebühr von Zasta ändert es nichts.”
Google Play · 5/5 · 2026-09-16

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 3084008230

Proof data

Record hash (SHA-256): 83c797ee92d7b07634493a4aeb9f340f2d907793ae1388a87837540830d1a264
Signature (Ed25519, base64): agYSb6YxaIapyOiDDfN7d0XThQcHOAro7mGRLcdWG1kbYpmIgbFEjwDmz4ourqSJWYttYin5ntvta306zipVDw==
Merkle root: c954f278b03f0ddfeb806da3192a945ea74ae5ace31cdf4f5c03d62f9b9c9c85
Merkle path: ["83c690cace66a0241fd0b85ea7655344ed74f29ce38a595a27f6ccb8178541cf","8e92fa15f3d8b38dbe34a597e02ae5219de9452ccda831b5bc61aa3d5c2bd0b3","ea2abcf4c04b0ff9411d7c167025a52be76c1dd887829ca654d9b4ef743f8afe","576033f153120f9a78f75ad18d9a8d29bf804658e528714cd802819f56cd0ecb","e850f4963acbbd062a3e305a30facdd55a61d32bf6e83d78c3648c14e2a58ac6","f4f24b258e37506ba5c0fa40dc280bf23727c18309d3bf0285518e368d1a6a39","814cb38a96f2c4854c71adc5aacb197a65bf5e8e294475084dd6f57dbd9f38e6","e67c16d34129fea77ea180377fe124773764f0f515ce9372d97822a6483ef2f2","a950422dd4b64fa99b90f52fa7a4b3d061628a158f5cd3364af8bd01badd1da3","ded141ff5ac9c899a79bb3c8b62e9921986c52f9057810d89b1069926f8aa499","6fa2f72d569b8d007a263e650b907e6c327483c7003902ca67229be5956a3b2c","d2ffc2b0cb8d432b6521d35493171bfc32688314dc541985e90843d0ebaba3ef","255ceeb13573d35635d64c45c4d6f041b2c4f80e7930c15c8539b3aeb3b2e482","8f7f72c61d4acc20d4e8b3692630947f966118841c6f9ea656d78c48cb55e364","2d9d4b958999e2b40d6b124a0a8044720e0313c217d237832e6b1171798873d8"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3084008230 · entry 108e9186e8c5677aea31…
Expected log hash: 6a8c2df90f09571413991731949dc32a09a60f9a75e1342827498da2cbeccca4 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":"v1791183579482","kind":"published-quote","locale":"de","page":"theme:zasta/price/de","quote":"An der Gebühr von Zasta ändert es nichts.","rating":5,"review_date":"2026-09-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.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 (c954f278b03f…), 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.