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.

“as usual Casio operating at a different league”
Google Play · 5/5 · 2026-08-12

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 3081458408

Proof data

Record hash (SHA-256): 13d8e34cf0c91d233f8a66c7f1da1ef7212a228a3fdfd78bd947dbc763fda79e
Signature (Ed25519, base64): FQaAWCOlGrvK3bUMA5GGJ434MnHhiizdR6EymvgWeVZ9soTfiP8x+QO6zDlnEXFzIrHsmC7MS1KxoV5XhH5pCg==
Merkle root: f2e4180d5a0710e7663a4b79dbb50303bd6f86e3a2b406f14001987f705300d7
Merkle path: ["13dc85332b3d773d18cc950a8147aa7d9983ee800fc836a29d94d028db8b2021","64cb1e7f9a18185170bb68cffc523dc7fd8002f8dc671a8be536f0a9e90b718e","3a5c527bd69dff18bd82029644576bf41cfb3b6e742eaad5474c36054f9003f0","cbdff59f37af9f50f537c50f7fddf000a869269b13ea9569fda62be4cd4cf01a","7121e3ed1d9c6316a73c708ae32e69a6d326b451d353b870d4daa9bb87bb4b21","a42f8442c2c24714c1ccea630bf90033fb9bee605d61a70b2f1356493443e74e","f1fa3de0aca65ecb642d9d733728a29ffecfbb4ee893c708f0e773407d4bf834","a1362506e48497033bf027617bc8d97db72fc03dae9ebe9de7aeab36bd00f4be","5201de8cd06b6963678ac156309ae0c0b0035511b5544aa26598f23198cc1e4f","407e8951915235d6e1152c8d1786f5f6d160867f8804e9e54c178f9df6482053","f3257097d43000a2608cc9cad30afa459b16fbd70c3082142061e57e8349d80c","92a9524f2ba39e3cb21ec96e3f0b5a097e77d1c6a45baf28519574e4e0d49726","4c6a8ffb15e2e1add9152cd084d26439d82007efee0940dd95d3a3eac588611e","a6e8e25a2ba90cb0272e9c8b0abe3d0d6e1acdfc88815c674818da4404f1095d","e9f01260bd0385751f2505473f49304ca5856588aee517e499b7a694c94e66cd"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3081458408 · entry 108e9186e8c5677a9490…
Expected log hash: 083ecc94bbb96677ba7c17fb105e7b1917457374ba5e9cc48c412762603877bd 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":"v1791172602574","kind":"published-quote","locale":"en","page":"theme:casio/quality/en","quote":"as usual Casio operating at a different league","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.casio.wac_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 (f2e4180d5a07…), 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.