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.

“it is explained really step by step”
Google Play · 5/5 · 2026-09-19

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): 6a157abe8206f44f174fc2cd4994025d66e02e38661db19cf1fc9766602999f3
Signature (Ed25519, base64): PQafp5W6CBG/d0LQH1HX5FkoiMPz1Fc0zwolCI1yutNiwI+1WQ51mtOt/WNLlNdhpttiTAP3+KijgH1Ks3MgAg==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["6a19755fc054bee5b5e28ae371035d24b91349c558634bc1b06529f5efb7685b","a865a96b699e2760fd85b00385ea667a2445d99d8a37e9c85df7fa6105904424","9758e455b27d54d7ac3e116bb51ef1f021d7721515a19ae3d2ebdea3bff70151","8d21ee24f298d26f3884c265e9a1fb15c37a7e1e7fe6775a2470e428441d7600","6c6447937ff2710e8215edad02d100323d807815f673108635a123ecb2da87bc","1ac4926beab15db8cf10d08fc8fdc26c441cb005dd73c34774c945065a31f71b","084787d6e03b16f118b585909b92d310abd84e246e0a0ef6503ff2dfbe2a0315","1d942c3a0239a405534bd96333371cd472a66a9ed81af8660bccbaeca8b3afe7","f03a48755d7a69e09ab2413c3bffda180a9ff8f6ced3205ad36c99b164fa75cd","0e6fa5813b8c01fb9e8d29d2314468c4ae6b047680228a2b4821044f8b095f34","47b520370c368ef7b87d44378ac62b96d7cb8197c05d4ccbd45c2c0301b2ba6d","cecda8cf59675307c2097f3c9b95f70464ca6c0cc9dde9f98213537f2b0274b5","9fcda85d8e37e19a15f376a43900980403d080527146762503d0fea51bd87692","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]
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":"en","page":"brand:zasta","quote":"it is explained really step by step","rating":5,"review_date":"2026-09-19","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.