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.

“Is it worth the money they deduct?”
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 3272274666

Proof data

Record hash (SHA-256): 41f70b9daeeb16754983d6c547fb3ad690aeeb44661e2e4b9a003c52a077871e
Signature (Ed25519, base64): HzIsiXKGgLz/AVz1QiKFUYMrG3tTRZRTtszCCelS6lPaspfG92VeBIr93fdmgkD7uZD/jh5d3I46nxSUzq42Dg==
Merkle root: a4d47c2a34f6eeba31e2744fb1551fe9a0e34820dfc152f1ad93a68b24759c3a
Merkle path: ["4205f33510adb1525c296d7504f4571d38ed5d8951fba9cfe2c5652bfa052656","63ec1b2de2f30325eb6e4351f6b58b23724c9b7e2627a38cd174afbf02deb7ad","3608676e274f86122f570d2ccb4d8b988212de9b3af0d59685e5a390cb5365bd","08976003f02061fa8175cf6071f93e4e3289e7f6e0bd936758e2f45efec229e3","22823590f68301a078e40f4b741ee1bf68a37526fc8d1787e7d75e6ea3d6be4b","3bcf335cbf7bedec6063bb7dcee0f9f6e395789045c51d54b0b302a97581a3bc","7d15cc512971a864db7da7fdeed99f8a81450388156fdd923d138ce786e6cc59","431d13797415b28d9096715fef701947fc267524238c58805ae7e3d90725a62f","d6ff45f2c7a87faef9d3efde6c776ac8fe7650a043368d71177913b8adc401f3","234b251913a4b9cf6e5e752f39644b57b8861e5188ffc3a9e35d5a7870ba29ff","0aadceef0f0d856f742d189406dbaa3aa5c755ebe9fec69552e8b54169d5a407","349e15569e0a1f4fe3a9d16d01f014e54bef7124bbf1f14bdc15063bbedc0e8a","0d7c4faad4992f205f2c1ebb2b0e4b1b7e9d070f1f77d3f8d64b80626c324f46","35108299fffbb5c1a0d86f074b5805457d73da5ec7c848a19bc9a928f6a42a99"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3272274666 · entry 108e9186e8c5677a2724…
Expected log hash: d56e71820b4c8c62b755e9f6e3d2b624566d12db6dd1606e99ef55749400c387 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":"v1792036997995","kind":"published-quote","locale":"en","page":"brand:zasta","quote":"Is it worth the money they deduct?","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 (a4d47c2a34f6…), 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.