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.

“filled out my tax return very quickly for me”
Google Play · 5/5 · 2026-09-19

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): e25588cc5967bcf3accb7b59f27330cd629c8847dbea75f3dd5ba987bda3b92c
Signature (Ed25519, base64): H5JWMo23xWPmm6hSeA6vG7TCLm5bSUGPTF7s/eYr8b9vwJKr/SP93qYHeEnBFoTKn/F684iCeQUQe900FWK/CA==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["e257b0f853cd2a9fd25348f67f551f6cf9d8ded9cdfc519aefb924215fd7bce1","96710559155483aa991fde66a67b4920e8ec013c05181f57974223662847ffba","d4edaaca18a0e7126b5140b8711fe8af0ca789c8d453f136a0ca77c1572a603d","8b50cce9ef8e6b70ec57234e6b26061dbfe87c9543b349779dc202179cb8121b","1e4941252991549f09293c58aa3ab5473a4caf5d915d11344f861bf589961c20","959f5d8466565651568c3014cc82b9e477a6ed793d3bba4c165bf749f5744885","d6d3b90a8f8a26324a51102478bd1f871b50b44f6e6fa14f8416c2737822b332","3f850b1e1374e8c71f02725c4755f4005a2658704b79209ef4b7b293479907a0","50c437da0d208c82066c4d1ac5892ab2e4643537fd36b78c6000593e9792417a","01894fc15114c90d9da6fb2457769573cc268fa25fd420853837b029647543e4","a586ba3e9b66e13b0e731a405e626f3bb5e21e749259558b9df152f6abc3219d","2b37358c7252f903ec12e33f1d8c9795879d270812aa5678bbf73d51654edb9b","06275dc2003d93dff6ae62dae412a16841a241c39c4d4453231315397101e1bd","aaa7b399bae700ce8013bce7d22a5956b227f2e0adcc638da32f9fc5e72da67e","77ebbc5a767f49a9f64068a716a8c843de0ea8d44adc624726bf46e2e415a41e"]
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":"theme:zasta/service/en","quote":"filled out my tax return very quickly for me","rating":5,"review_date":"2026-09-19","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.