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 3126883925

Proof data

Record hash (SHA-256): 62914b9902b9b9b7abd598baef78cf8094cb170d1be97d4b94022e341b901a58
Signature (Ed25519, base64): lXk01xd9JGkyVVOq/G0s3EB4RgGnSDptR+6/LO/zWLmIEchDKwtiFDh181O8TKKgMafPpBrp4VS+/wvrRYyIBA==
Merkle root: 0d7fec37eb7aa7ca022c461398d36283692153bdca7d5292b2302abb6878e5f6
Merkle path: ["6293ac791f68e18b0cfa5fd8bf6654a1f5457ff805ae1ff0f781d8cb2a503078","e55d432542b6c3853980a0714edbe9bccb90fb1f26b67f296635ba63f7b80246","3586622f3ce122b89a40abe931b797ffde611b1b429ac4e8a1bfad5021ff948f","5525d46d635290fb5a7dfb487116160d4159e5d7f2b5062b306e04b5205fa053","804bf014ead768ce6162aab0cc40ac2fe265842195243fb04939af64259fa2af","959b391d14a6c6765c4f56c23a5d9dd6e10810f6d190bfa42953be5948e5c0ce","597f452a1e257d67580f56fa73196e3a92a4d460db3c764aae2a643875fd2348","122b7e75a73801b74af55becc4d77929f3adc69ebfc12a5326ae7c00c76f9658","45c854c1226d28f523155d964fa6e2f2a908fddee15d3051bd213dc7b4682be8","45dfd7e9ae6198de0ec137bf39484c974d1fe21bd532a33b5f8526995b7177f9","a1966872df382a50b9fc877d489aa72db50933b02103923d0d5362535fdf378d","4ce12c2334e8f56fc30e7e4af9c0e326efa3c5646a10e71c10d670cf6a9c02ca","38ecadf8498df1719ecdff36e217de372cdc07cb84c4b18b50ce7d8a4750321d","7c6f9d1168e8a2f5a015e8aabaa46428ad67e71a9293d82f20ec40d2ad6c53fb","8c6d73d3d8b42a55077d4061fe37663a0906972431ecb9eb374f1f8461206839"]
Anchored: 2026-10-07
Public log entry: search.sigstore.dev, log index 3126883925 · entry 108e9186e8c5677a6678…
Expected log hash: 7790667e260445bf729ea3061132c2116b163a0e0b944eca343c9e8408350ef6 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":"v1791359818972","kind":"published-quote","locale":"de","page":"theme:zasta/quality/de","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 (0d7fec37eb7a…), 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.