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.

“600 euros (almost 1/3) less than what Taxfix calculated.”

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 2893887498

Proof data

Record hash (SHA-256)

f569b197e5f9bef8ac8c98e132267108ceb164fbde27238cd0e4997fe42e70f5

Signature (Ed25519, base64)

81UBF4n6LnjK8wyo76Lw1Zaf8IaQFK+mlWnAaMfAauwkMvyvd1db9dtQpUzc+ICS0GwB8KPeY1mUBZKHe2eVAA==

Merkle root

2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88

Merkle path

["f56973738862045c7b074ecf5bc7fef2a7313360617b4edc033ae0e188c81472","03c638834c4c60f94c8b9c143fb99cac5f639c01dcdfc237f8f027b189786e27","0342b72fd3fd512b521458967c9b40ade1129f7aee5e072c38cda3df9384e103","f2e8bedacbe9574c61daabfb4567d5a70498ca1013d3a53ea28e750937fb3dca","ecca0b67a15a0700cb9ffbcd7f276b8009ac72d650f575810d647436e1891e1d","4e91e1ec91d7803f0a45bc40365dd64690b6d78dc076402c966f96494c0e9521","e496cdaadafa944e702aa93a164947bb074a9e60b23b3a14203e23c62ef83691","6bbdcdc079bb078426b4a767ecb8f7192e8e905ca3ca000bf9d48d4459ab8293","fc2aa6e30410fc409095e40e7c3bd8606b32b82bf4a3be66e33279f0a231e370","4e7613a2a09101bbd0b6c92a1b22eb09a5e796e904c1424037323e239eb01eea","a90fa58de5999e596d28283605afaa5c0df6592f34abc44393d5449ed42372bd","71cd50b067ff32d173a37554b8e65642cf533aa669254bc42c5be6ecf57ec03b","34bf35d805c4f7af315854dc10a7a10ae0ea054d46dee40b360c3f04f8b8e60c","58a3dfc9ad8696e92f5fc9960e9c6bc4cc04e270091b574a948593298b33d1f5"]

Anchored

2026-09-20

Public log entry

search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…

Expected log hash

90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"en","page":"theme:taxfix/billing/en","quote":"600 euros (almost 1/3) less than what Taxfix calculated.","rating":3,"review_date":"2026-07-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.taxfix","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 (2f068f3de56b…), 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.