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.

“Taxfix ist nicht kostenlos”
Google Play · 1/5 · 2026-09-14

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 3273084324

Proof data

Record hash (SHA-256): 5a9894fa961e3e579843d200cf377cb704cd59af28428af3f9bccd490da317bd
Signature (Ed25519, base64): 5fnDSwJBx2JJmxTOYtSp3xrsdxujg/VKtLD7CmGum155pgomufGutTeDhzjPv8hK+mWLwXNKrapjWKGzPTdsCw==
Merkle root: 4591ccf5fcdb01ed421243d02df5f30203ce391c077d4ade1ff5ee97e69e252d
Merkle path: ["5a9625d4ac90c5d00968b2add1037e034af945f7013647de1a3d707edc71133b","c1dc9906c369aa0b0b73598aa40e0bc4892b78a42a22b20f03bc44867ee14efa","6b31e9ebeb24148bd7d79d9f78121e36d5cef600f792eaa4d13ab2eb3b975954","f874a33ef7374c7591aaa4e1d754bd6de5db4966a815c9028344fd13d4585172","331b1c36f57844c36ff50637f0f55334270107fa9cd9c328e1edccf969193e51","cd4e7d556363f21b66e42f502fcd1ea1401939a881f848abc58299c94dce2d0c","5a44d8fa42403d13b052b2383c40326c369bbb0038f78dada1eb7ecbfd87857f","2d295314c268f393dcadd7f4a80218b7159b0b9a6d1304a61691a0d587b15a18","be7a7441afe863d1a04274a357407eb504f823d3b623d4ce2591fab520873fff","d4ab2dbf81233f75d56844f8c9e35067e353d6799fb5cf19b72538d84cf3aa73","56d0cb2e44514ff61c37fc874aeee9bbe14a6c6f881656a90e54dab1f94afaa8","71deffdc3e60d0983d04bac22af47799e28ca987643ad6dda198476b887a69da","d52611af45c7ef524ab63e970b046a1061f8173af77bce3332bb854291964d99","04789af0aae7a52bbc7d5e129e675a1c89df82999aa606ccdd23b89f718c4ff3"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3273084324 · entry 108e9186e8c5677a4edd…
Expected log hash: 52df3e0fd214b96d6c701f5f337408916b7566fa39826e2404f759c290be1eab 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":"v1792120358245","kind":"published-quote","locale":"de","page":"brand:taxfix","quote":"Taxfix ist nicht kostenlos","rating":1,"review_date":"2026-09-14","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 (4591ccf5fcdb…), 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.