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.

“dazu billiger als bei Steuerberater”
Google Play · 5/5 · 2026-09-06

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 3668793196

Proof data

Record hash (SHA-256): 252bc3b9481a2f8127f0c7a67ad2d963c652842b9d93aff9caf1ab0bde6bdc70
Signature (Ed25519, base64): 3TAVjK0vjT+IMwkDFm/Bn1F0rsU8O36JgfzqzFfBSWlhucOlQEVIM+kV1BOxjN2yTml+csCHaMtRvH2EILtsBA==
Merkle root: 8552de27836d9c1d73f2670cf2bc11df6459e7443d47ace4674278484e3a6d8e
Merkle path: ["25378d092cd5afa019b72e1ee37b6d2382cc67f4bb50ad6522d495f97bbeef0e","5d2c9980c6d79219e594863c5a82787d9d09b929f6b54f3479eee430436b4518","4f39993511c5736f766407fe3c7be7a224bd089545ac0020dc3d59e9641caae7","8899d82ef6fceae053088ad69e47601c3e51e741b323ebddf2864660894edd80","857f090f724703fbccf9a9711bf525b285acbfbd0d4e4bfb39eb5a012295eafc","3aadf188712c1e1b4a5db7f3f6d429e970fc20b333b0dcec26f8d0f5f31c4209","1d63f4c37a75dadc8564c2607d5abeb1e5bc27e27f715735f6716ce97d6363d7","8688f6837ac3a5b9c2af9174ce141436a62661199e22530a35ac439b1f0716f3","1b8f787301f3029d45be5c0d9791d1d2fe821dc1360d234e692fa49f7eb4e011","b98b3946624e96ff5c5d2359bfeab8d0f6005d975c9b5a1ae38021f06592e67b","a727751c9d33c8712451de0a0e4c3f7ed63f0877154abecb7860115e377663a9","521a2de35e4b98beb07bc39254cf192902ab2b5298a659e0538f167d5630eb48","06f625e80da47a14c2d3e7027b88f7f89c63e459e05ddda58b98e60b36bc2518"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3668793196 · entry 108e9186e8c5677a8c91…
Expected log hash: f099839a063ebfd0b66050d615b9645cca5be77075ecec449f1aa0148fdcbfea 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":"v1793706932685","kind":"published-quote","locale":"de","page":"brand:taxfix","quote":"dazu billiger als bei Steuerberater","rating":5,"review_date":"2026-09-06","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.taxfix","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 (8552de27836d…), 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.