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.

“Seit 2022 gebe ich meine Steuererklärung über Zasta ab”
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 3248278454

Proof data

Record hash (SHA-256): be4032d5d427fd45e1123d5042ae772ba3215d0d3524cc0503cf950d252db76f
Signature (Ed25519, base64): IHViDg4klQGpqQuhCxOyZEApw1WuRrC97LYxAU8fuCppJz9NScJQi2xk1YyC//uRpLwJSBuFDcf7uL/n1p6cCw==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["be3fc54ce3476e27ba2ae3e60f424b9cc72180d6cb9fc2f0891de4211ffb3475","72b674c6109e18c4f29309224b4205cc7b14ef223de189d4d8f18927c62abf75","df277e099296093b8c8c22e8cb7e7328697d36f71cd30fb47857dd5148082386","3faaee727fe51b8fc7e7b4f0276d7bf211dbec045bb78e73df0f391b52058807","9d2ee1742aa735c9a096d78db02127dee91755cfc779f9270f1750b371901e43","b468781ab45dded0bf01e7409af908e212febfb9dbf2154293fd28417eb8adbb","2d22aaa5524af331cd0f46220346d0ab31f3ddeff6a4bcc0a2aafd27eb154578","c1f96f0a996784a9796b874527f1a776e42815157e5391fb0631d2c320ab8b88","857c1ac7f25da110f4649b829c93ac95923709c43e2a1fea0bd913294b5d1f4e","a75f1c241fb5d2a78355490d5f64a9f7a9869645ddab36da78c3a032038d1f9c","347fce49394b6141bb1e4fe1f1289224acc23f3bdd6d97d335d36fdd9058c275","2cb3d03c4fa647655f06857f3e55faacfb812f8dc7c257aa10761d43e9fbe12c","a77d6603ea315a1a40198ffcbd12dd2bb735b43c4a160be5cdd17c50135fe05a"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…
Expected log hash: 4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"de","page":"brand:zasta","quote":"Seit 2022 gebe ich meine Steuererklärung über Zasta ab","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 (81db1abd6b6e…), 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.