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 euro (fast 1/3) weniger als von Taxfix berechnet”

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 2882354328

Proof data

Record hash (SHA-256)

acaa6b7b35485ba0e6374fb4bffb42d648a6a5383b43610cbabb54e768e017d6

Signature (Ed25519, base64)

IDERxtUQ0HwDu8wRJrdBqzj8B1Tej69NsRjKQFnVSWaZr0GF6CEtICi06h1nwjk/lRrbaJO62K5KTdNiCPBcAA==

Merkle root

a893faa173c6b378c8d050262e841ab57fdd89b71985eabc0906c40abd5b6a6c

Merkle path

["acacee87347d8ec5f42f578c5887482bdba091f975fa4b883140e2a2ed89df99","345c981ee95a130d081d0c70b14916b330dd8d4a1841b2d3508f25cdbbaedc0a","7e28d50a966dca7780a59458d06a6717d7728fa5af02968792dba596deb84485","fe8d1d3eb34fb555a046c09d759fac62e6425ec34a903a4e6bb97bff8095a504","74f50c493a3020c643314e86153f87baac9eead2288499640ea0ff1b647779e2","c411aafde79462d429b2d9c3acdd0e52da99da5a613418bc02919b4d9e1130ea","f27cfd06d4335b4b55fb1cb838e099ed1e3bf03b254338e34414c226c3c69dfb","5fa51fa54cad9c983efd633e5b7cbf069fe57c1702980808260c102d65588a94","7b59693990cb9fee10bc673e2f654b1abe65ea5e731b57232af54fd54b021abf","3fd15fc3aa0a376ee84760a4994e36ea07211e3e83d72fa806f61888366db9fc","3159e5602f571a96a99ba7fc96151131f366935a6a1f34074bb485ad8c67e9ef","27bae93016b66b779bec9f0cc5f3a622a9a6c590e902f902107ab8daf6e13017","d11802523d6d1144d6f961b0db9dbcffb460682e8b89bd4df3a28683480b3702","96604383e0e3cd500d4560285508cbcc8eef5ad88e576fedea27dc38c3fc8ebd","142316fcc45d8fbb9a33df6e9be8f563650927c4e612ee96d4bcac9064ee60c4"]

Anchored

2026-09-18

Public log entry

search.sigstore.dev, log index 2882354328 · entry 108e9186e8c5677a08a7…

Expected log hash

5510a497abfe2e680a39c301b0d905c2a575bae0a1f389fbdd7b86babf05240f 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":"v1789619628558","kind":"published-quote","locale":"de","page":"theme:taxfix/billing/de","quote":"600 euro (fast 1/3) weniger als von Taxfix berechnet","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 (a893faa173c6…), 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.