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.

“I recommend Zasta for everyone who want to file for his/her tax returns”

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 3248278454

Proof data

Record hash (SHA-256)

5e3a268face252dbe9d3b4eca82bcfd6ad4072c70efe67dd48e0d1266bc94e89

Signature (Ed25519, base64)

gdLJDiTpGJ4e0WV4rVYkrsQXOHLjaY98due8o4FC5Str9FbK6dqtCw5XTBRg3Q094k24VP4ckd3+2TJltekEBw==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["5e3615a809753334cbca5f034ded79ecd8a814062a13103c13446379a61904fa","a81898dd2318f4dcb49aa4e1c28ddc296758e4d95d518364c88f5f1b8f25b3b6","24f3afa5ae99ee891fa6576b112e1ba834c4168b4ee4fdc331cf5c19958e4df7","a0a01d5fae77732412315def7c178a92baa734a7f0a20fb76632ba11032ae92f","df5ab9067798707be44e508d01ff23756fae97f8d6c86bb886c85f83940bd38e","c78e6a7661d4466d3576b9bad063e50a9fd5abab27ee93040c4021059852022f","65efe391bded375390ceceec20e86ecdc054377c31bc825f7958d6d7562e4c48","3b0cb83a950fbf5ff079e18632d350a8309eb2258fcb4840e2451657e7a36071","6ab9923be3ad01d669c64d169ae58751d99a85808ec547a6b22faee5b612f326","c5614fddd4764402696d9e6d0dd92872c1489f9bf6270c668621fa04b96236d8","47b520370c368ef7b87d44378ac62b96d7cb8197c05d4ccbd45c2c0301b2ba6d","cecda8cf59675307c2097f3c9b95f70464ca6c0cc9dde9f98213537f2b0274b5","9fcda85d8e37e19a15f376a43900980403d080527146762503d0fea51bd87692","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"I recommend Zasta for everyone who want to file for his/her tax returns","rating":5,"review_date":"2026-09-26","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","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 (81db1abd6b6e…), 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.