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.

“Fast and simple help with your tax return.”
Google Play · 5/5 · 2026-09-13

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 2948162176

Proof data

Record hash (SHA-256): 12313aa3a67421fd92edec65715203777af73bc44544871f71049cb3a889dcdf
Signature (Ed25519, base64): eK3nz0rYP7fZdMa+DRA+KsGsgQBptJsgH5sFKWsQiB0bY2mqKFCjvJ0hJ4EzHOurre5pJUwW91FXCnSwPGQ3CA==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["123110455b5fb8ecf7816c41b36651eaadf5b29ba88b99c667209d4c817b6de2","c8e4d2fbd24426989d87201d2657fa97dc5112e481a6e28f6e21273b73e28397","78c2d0cc31a763a8391ac195a3555ab493e24561618b123252fabec1360f9925","cf5630dfa52c9b71993eb8f10bcf2fbda43019005d970c1a17e233e5cc2e2187","7c70717baade0c4954615685da96eef0edf7138b9b8050aa68fa8b34cacd5df5","c36eb982b7cce611224d6d230758b9d1ec959f7a23a85472a69b85d3fd52fdb8","4514d4c0f7f652eed896dc3a59f2c064dc36d67856ce2687725a8bbbbdc37f65","29aae80a768a859a9cfd7b16cf997d8baaa40c35ac23edbec41b8c8fdb965ccf","895d7fd1de5326257e67b87fd62ea319ee865827fe5f4d63915a94570ab1bfdc","b3e1aa27010aa1e4459960cf9e3aa390781b00f56a5f7678cbc7229eb4f824e4","026ef5a0b1eb3fe6da2c140a5dd82487156128a94b90bc21aaa920949b4159ed","6364e68670997f2580620295dc73fc1bb7219986bdf8202c9b9ef24d8e7f20d7","a46038d90afa57a10c269469667a209623fd066d3f084698343feb099fcfeaea","e892ec98bb605644ecd2848bdd788a136c626ca940d293df8f2f1ab99110b2e3","eb97a4ce74ce5f5fa16f1703481b35cd770316cd3d34167e9b76f4403804f896"]
Anchored: 2026-09-25
Public log entry: search.sigstore.dev, log index 2948162176 · entry 108e9186e8c5677a61d4…
Expected log hash: 5ff8f25b7934b5d72d363d6805344624efba4d637f2c851f11783b259b9d81be 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":"v1790226990092","kind":"published-quote","locale":"en","page":"subtheme:zasta/service/misleading-ads/en","quote":"Fast and simple help with your tax return.","rating":5,"review_date":"2026-09-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (539721061967…), 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.