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 2948162176

Proof data

Record hash (SHA-256): d1722eb451c375391ea92f85dda41965a4bf3396c7644ede77fe7b8f0831ee84
Signature (Ed25519, base64): XuxUESgknjKj28gkU5/DYFZSUES5CTTUswKnuVLSBKaAy1h0fZ5smbyuGJHqiiI8Rvp22cjIG0bEReQa++6QDg==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["d1711226524918facdfaa6e3c6b26be8b142a0648882adb2f8d40d1cd3ce4b64","94cb37408b7b318ee4238b5acf472978bb10ab4374d4e6fbf9fcb8f8419ce2c1","547547fc016396f74f166682373c1dc6ad36ad61997645cce1b1aa43f08b9a78","71f7c64f804951b03f97ca55bfed8c17cf8ae6c77ea8d2b6371fe087e410dcd2","e769e665a86d1b41a066d29eafa07c7eea03c2bb0b9a487a818ca269ff42efdb","053757a4b9acc785159c329dc384b8aa34d46f1beed8d2987a620ad5941276d3","380b504fa920bd12baaca0b5d070c2f103ee96e22b6403fe908e5f4c643a9f09","0b1fbfc0185202de42f113d512c51f302a374081a01d9e58f61a6f0e920e0b5a","c77385e3a5cd809e9e995a3ff29cc93abc07609dc0abeb6a513c8d378d88c6e9","8cc10392dea6fdc84f06a565a855bb3808374cd32f5d905be2f6691dd37f84ba","e608046c9c03d2d0b6ba3982ccabd707eb41cb602007bcc540a3878ee51db3e0","f0bbf34c1dde9d32919100878d63d35b3f578b04c286b3c7e9b27a0d61c8d8bb","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/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 (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.