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.

“the tax returns worked very well”
Google Play · 5/5 · 2026-08-17

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): 73528a72d8149785515f19753e37ba4dc6c584056dee070e87b53f93030fa308
Signature (Ed25519, base64): lmUil4sEPYCAWObGbQ8yH0KYDdXpGDFfV2yx9D3652+iHPXjP4liDTcxkAdDFqsE0T9mj0EO/07VrKSnMWyVAA==
Merkle root: 81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451
Merkle path: ["73528617c9b05812f13fa12a542e4631ae45db21b039f41a2c375674acdd83c9","5e0a0e48d3b2a2d85b5065952e2aaccbbeedb318ab43046d93cf121fedb3a37f","87c4473703e542621cbfdf74752e507155d942f3707609d875f49288e307f791","3d692aeab25eaeb04af6f6c342807ad7031c9c385dc41a50d1d6d0e77e56a60f","4c1bf0c973cd71d5d6660845bfeeb770ca019325a778a963669c6fa0eec685dd","db9ee88858c42dd6a741ce196b30fd9eb7ee8baa4b06bdc7717136c6c7bccf2c","f2266c2c2c07373b3bddbeebc2690e1d405fee874f9028be1ec2fd9ab1c55433","b3c80599722a0a671022ffbee15ba9b2977c3899d738185309977c0ac08b091e","64b515f26e3909bec67e766cf50feee0b6a9cb671e8aaf412742ca872af92079","74275e72237c14b7fe42fca8e3f3f85205284c262a20695368fc56b5ffa5e643","d5672bbb31e3bcb7edcc920562704d162edd377dd0f14ddd0a409a526cbf8eaa","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":"the tax returns worked very well","rating":5,"review_date":"2026-08-17","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.