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.

“Zasta is a game-changer if you want to get your German tax refund without the usual hassle.”
Google Play · 5/5 · 2026-09-14

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): eb3c7916efb06708b9b43d88766ddc1bdbbe7bd17b2055c886247e44bd956446
Signature (Ed25519, base64): pntJ3cg7Z9TmCgw3vkreKdfGsx37ovVOOhO540288u7uhIbpNXn5T+wug/sWY7sFBOJsclEH/b0KXyCBebXKCQ==
Merkle root: 5397210619679ac63434abd334c13f5aaccbd1dd184ad9d8cac5ebeceaa346bd
Merkle path: ["eb3b4516e31d07be71f2f71d849d6c3f2651e25b70fd0c2f70813626360092c2","7af7052beac4836fda39e4ba044061bdcb69d86e428cd9d61bf60a2966591e94","ee718a3cfcb7f0adc58e04ce31a837bfc40095b8b73cfdfb3a36e528e2f55d9f","64ee87cc7c2444563305244cb8bed600611a2b45dd1f3d32e787339cf5334f91","d4fb2204d9f7b3e836d34c71a94cc0eb8e11881f5e74b6b226d0441946e8609d","101b1023224038fb4f47d92c762cdd1a2539a148521256008ac33421013fc0a3","38637328921820afeca6f56af822508d7db958133b4fc678a9c4ebf935e10c27","5f301d1454a8bafe5e1b18e0abf506b304e5b3a9df15345ea53fdb68aeb9b927","f975e8dbe343ebf3ff8b1d78a81a222fec64792fde39123ae2b98ad831f4681f","ee253aab15ac699c0c9fd88762e44faf8d4b3fbefbd35e8c54327fffeee3dacc","d60992637bb22397d5bfae3fff728cd28fad6f7d54df1da8670930d436bc8926","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/quality/en","quote":"Zasta is a game-changer if you want to get your German tax refund without the usual hassle.","rating":5,"review_date":"2026-09-14","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.