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.

“Mache seit Jahren die Steuererklärung mit Taxfix”

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 3667254458

Proof data

Record hash (SHA-256)

1d42356f05b0a0e2b5c602f22187129d84dab7cd1c00425b09d23907f93aaa2c

Signature (Ed25519, base64)

Ubm2iZOWARRWGpR719pyztQwZU+T5l+fHycd+qTZZkiIQCKuqN2GHKgKNOL8aFvcyhXPaLndwNZIxZXQioxBAw==

Merkle root

6198693610fc101ebb82aa1f9c089f7146b31caebf70bcf1f70b87596a2871e0

Merkle path

["1d32abcabe9c253a8e8f75c25fc40107a9ccf86143ef3bae3f94827ecbf4420c","c32b1c777dd67c41d187e969295cb89e59275b69e2132116522ca96454f4bfa1","bdf4406942af83c40cff53b43d51f96429f3a4297a129295765e66a049baf75e","8dbee36e6fba2900908afc729f471cf9f9d59fd8fb1793a09900b12df2fe0cab","a43929545f87cabd9f18b330cdf3bc40406c9e13908331f80e6ce3bcc27b8543","21e6c23ba8383d516b6cad9a99758175f0b7cea3c7d0959f24968af33ce55dd0","239f17253ec1ee2b71e0596cabd034ee30eb9db81f8d1f38ec2eeda186fa78de","a91fd2e9443b0d021b9425fa23b2d589614e1063b7c90a908352f07c40ff914d","42f28fe2d1657d1806edb409821b08a898113b29ba4078672bfd00820c0cfddf","44021fe6d3afe7bb8185ef4e7406a9de0cc0b7ae270ad24f43e9bfbbefddf2f7","341b3ea0d9b38d68ec772df9165156f87b1983bbc2fdf599e22662c790ce3047","0d9e6ee6936356ae6c967b3ce2cb0e42d3ff0d06b736c006024c56f32867114c","3eec96d57c7ea7d1841605fe068da41ba3bbf63a30709a21a9f81605afbbb44c"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3667254458 · entry 108e9186e8c5677a5e6e…

Expected log hash

d86cb752bbe06d2c6cffdf81a425ce2e1f7c967ab490cd5b4543bc4a2cbcf526 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":"v1793702805047","kind":"published-quote","locale":"de","page":"brand:taxfix","quote":"Mache seit Jahren die Steuererklärung mit Taxfix","rating":5,"review_date":"2026-09-15","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 (6198693610fc…), 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.