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.

“I was switched to the premium plan even though I never requested it.”
Google Play · 1/5 · 2026-07-15

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 3199295725

Proof data

Record hash (SHA-256): 33bab1c70b483e0710aa1dee4139d481558f83b9bcdfc52c80e8e94b65b5a2e1
Signature (Ed25519, base64): 20+fQ6sJkR8h2FTzcZwGZ7sjaxi2ddNXOblDWd7Kj9WjMtHDlEepWtYpVUSDxoYj1Mf/ZnPuScANrgX9fRniAA==
Merkle root: cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e
Merkle path: ["33ba05bf1f492885178bf128a7d11f0efc73ffc2aa1ad74d00720c17166c2716","16c24800997e1a2c8db66c8a0c10c567f91d08159c59f5a6ba663f9a465ce394","b04784597ee90ef91c3489dbc122f5abd0cbe61a3af547ec31d20d3a3a699118","2905b75176444a216436af625463ec5e1b8d3919062f3705425fc388a6ffaff4","c665f41b90ad933a119a9af54218c3db1f536819edab85863100bc142e4cf565","cbea959f9155bcb29d7df6da83c7bb660a0d8bc606e9c79021ccfd5c8a03fac1","68259fdc34fa344d1c995484a8de0eb90a1c3e6bea1da8c0563a2acfeffd5c91","cb6d1633dffdc4512465aa13c3f66334d149df1487852c7b8c11a1f116b4271f","891ec40e1fb6cc71ecf8829330a31faa20aaad20db806e3249ee40360a66862c","aabee3b14f386665462b6e8ae67abc1386302c2c4e9ed94367d9a8cac3be49ac","00c82bf6898ae1023baf085d881a80a498168433424a5928122c7f09262ab69a","6b52b30eaf5b97885456e54aaa839ef0900f8bfbb260e6f22cb33aec9a4c66c6","67ef19118472e8cea8d8f9c7960df416625b46d91fef63f2cb0306cda5833746","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…
Expected log hash: 59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"I was switched to the premium plan even though I never requested it.","rating":1,"review_date":"2026-07-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (cb5472fa7b7f…), 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.