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 have been filing my tax return via Zasta since 2022.”
Google Play · 5/5 · 2026-09-18

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 3083089221

Proof data

Record hash (SHA-256): b0d81a6d69dcdb32576d650881a4525378553eebe91f4c67195f434bd79ea3e6
Signature (Ed25519, base64): e9x2+hhQsg177HPVxcj2mNhpar9TC5cmO73CBBi4PgsRoDJNLnnzDFkvv/gxcW0AEWTzfPX59KFyg88b4ZriAA==
Merkle root: 8286585306e2f6535f24bc74a0e420351a30ee784970721b6abc81509589dea1
Merkle path: ["b0d7be8ae0702614722fb69627a0171cec69f096cc7e243ed4abae0907f83fb9","7a636c983ab2fba0b779801c0b74f1e3ddb0f68d8e77a1bbf4b4bd08e478e3ce","67d7d8c641d31f4b608f3797f03b41c638816908c76e1318a2d6151be129247c","be05018022b327927eec04d27eee8683ba3793d21e774859bbcff8c87f647bda","a33bed93a1e49b39005e93dd22472386b3a22e7e076acfc476d5d0ee796e2eec","c3870ff84b78ecc8f4cf0062de6eabc1bba1173d2df632909a1810187c3bd580","ae550aae4aad403b755c3dc72ddabe8df6cd2b7e33ece998560f8f7a3d8ae39b","434eb3520d94714d9a524886b01a74123b329c3ab78b5bc4f47978fbb5003bda","5e91f4a55f1f3f4da08c8082a8208301cf5dfde6903467a871401904cbf9ab2c","f44169288957885b1d29f2107aa8025a20741489e76db14e4a85cea519c611c0","65e3e49c881e0d959defd1fa8848ebf713247335b61070f23c8751ff8a19a218","2d19aff3eb5fb952ca96d7772757e2fab4b732aae11758bdb7163ac784a7c8f3","11f219a69f35362bbbe606622d1eab4c49bea91c33b6112a6050df639f63eb74","14920bc06e2dba53d42b029d731ec2f186aec4ddbb7876a557af3101b601f550","9d207bb1c21ea0ead25a7a9399810567acc6ac0b2f8564a35532517a2435432b"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3083089221 · entry 108e9186e8c5677ac51b…
Expected log hash: 74b336b309bcff3112628e1f4c16da8950920df5b515dca6ef51f80bb0b0d24a 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":"v1791179522617","kind":"published-quote","locale":"en","page":"theme:zasta/ordering/en","quote":"I have been filing my tax return via Zasta since 2022.","rating":5,"review_date":"2026-09-18","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 (8286585306e2…), 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.