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.

“With Zasta, I was able to file my tax return for the last 4 years retroactively, and it was surprisingly quick and easy.”
Google Play · 5/5 · 2026-09-08

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): 611bebf00a65cc2cd897cce4c0688ce2a8436864c1e36b5b835b68fd6cae433f
Signature (Ed25519, base64): ulEvtX8GgI3AIV1y47XHBRmIoeCm0H3egXdJMcYgC0JVeiZJb6nJloirv8F6UczcqKcXleS5rnGgUBNq8t1KCQ==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["611ae3a6037221d1019634612c9744703dc2e3e93751a6883716ac58847cdc06","29c9c8728ee7def3fb3973071ccf93e805d9ec77efe580b0a52ffab26a1bead7","df77ed8c3b4ad43ec1e16b6895cc1dec7c20ca9d6c6b3935d2861a934eac5724","71a96c01c20a4fc27a1cd62bece5ef3bfe95da4e72937680357d906ba66692f7","c8789fdf69f5b8c43f0babf251823af8e1013b52e982ffbf5b3234b174f5521e","335e9049568b93e6f97d94886257cf4878ddfd7d2ab1de03b21b678925b2fc70","d4284fe8ca0ef9290dab6a80cea2e8cc02b0b2b6e0db2993526a7844d6a7fa4e","af78e7e419ceae58ea691fb74a9d3b7a644c3595067b5171406010aed7b70e14","417b5332ff0b591044c371a326c03838759654e3a71ff72cb46ed856ff41da88","578e746d743dad501e2b0eade323af6a99728baa76d9c7dbf041995811c30332","aba2d517e838f188c54275c5bdc641f4ad14133195a1d59052050e295c11280e","d1b72c3bf8fa39f702c9362c8122f6f739a2de01186541ca432c0227324bb610","63caf53777d803af92ac6db2d445588376da791f63be3d8e14916e9cc99957cd","f5d1cbec3469173c409764ba850b613628c88020363ace8f472e6f611d605e0c","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/quality/user-interface-simplicity/en","quote":"With Zasta, I was able to file my tax return for the last 4 years retroactively, and it was surprisingly quick and easy.","rating":5,"review_date":"2026-09-08","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.