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.

“Dafür sind CHF 6.- einfach zu teuer”
Google Play · 2/5 · 2026-04-15

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 2541942774

Proof data

Record hash (SHA-256): 65f0305af92bb50c91a27df57e30ed33ac05a2ad58461a8deddfd0653aa9630c
Signature (Ed25519, base64): 4ppSOBMpkpSlU3voUn9JKRkumgD5A2sk0UpBJ45q28/KuDyV5Ho0xgYRqK4OaiqcKnRFYn2ZBPKl3HzRIJZ+AQ==
Merkle root: 0fdf8a945cf322eba60395065bdb38bb3eeb32c52e065b6c93c48bb56aa3bb91
Merkle path: ["65eb1b2e23bed123fe92e43e7333d31d1acd0ae99d87fcc8ebe8b8e6db82c9ef","40a2c6d5dd191f478314e76fd443eacec6b1468cb8ea84a37c8d8ce8f680b1b9","30f3e1a963eca2cd1f73652186a07e19af6a364ac686d09207cd5c5d5e8228a9","1d1cbf68ad1df3254f492f589357dbd64959be5176e899747487fb70e3ec6fc5","7f19c9e8d56b21942235358b87abd512d25fe6a4b0cee01ed411e4edad8b1558","d9ad29b68cea4627516b65981012c1ac5c1548531c48c36e9dfbe899b1ca7976","799634042a0583b147f0e2e7c9bf8e7deec5aa863a5f13d756656ac027bbbf61","7ca39f87a1a359f697ed892679c811dca4d5580d418fa0e287ca551df4c450bc","67b81b39b9043cb7846176bf1d4321711bffcb89fad9dd0271af0a7a4c84021f","03b06e2da18383b85249d3f12b1dd67391e2654f43ff9d0d372805c92a3ad571","3bb33c0246a29f236d592e7eeea8842f1f7d6031eac0445b3352c64c0fe253e3","58a6e6d87e5abc2ae84c16426ac7ae57aa4ee3dea4aa297d173e96c213dede34","bf9364c8f07cc31dde92e8fa9e328df950308aa505d76ce4973db2a6f71840fb","e612bf3863a4ca6db004d49df9b16b869da6bd7612ef55762e23c722f5ffdfff","31e60baa9fb8f672f686fd126d7dc82498bbfeaa38bc676e67691bf1c2c7c210"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2541942774 · entry 108e9186e8c5677ae0bd…
Expected log hash: 4825ba618d3c3368179be13912e101812df871de37f30b1ec256ca6d987713ec 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":"v1787277864570","kind":"published-quote","locale":"de","page":"theme:threema/price/de","quote":"Dafür sind CHF 6.- einfach zu teuer","rating":2,"review_date":"2026-04-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.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 (0fdf8a945cf3…), 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.