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 cost to use the app is reasonable.”
Google Play · 5/5 · 2026-08-14

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 2612347360

Proof data

Record hash (SHA-256): 18ef79b1efeea86e875d476c3ad02c1d16b0d77984dc81d4765eca20fdc6903c
Signature (Ed25519, base64): c3o6Q/RsJTHby5mIJ/4xz8uUnBCQSnLvJjKDpqlp1oAdW21hjeDlsXuBgoGTPQ2HCKv8RptsAKWKdHDDAnO8Aw==
Merkle root: 8f6189bb14c654a5d372a228199718ff564d604464d9ffcf8d8c57d2f8172964
Merkle path: ["18e8e858aae36249466fea6ac41d8e6c3a400df1f624de19608ff0d10d593b4e","37caec5d2e02668c5ebaa4ce3ee978f373d2ddf8fc18df73b5de9f719274e0d9","137e92b2bdfe4f9e010fd72f773a8af0143f8c093ee84d43e9cb7f750ab4be31","e08ebc32096d3299d5b04bd5e8853b3f6dbdd601e6add58f6487a43926829226","949aff8365974d1c11f06a14879f228edd885b57c2bdd59e1148705dfd4b5bc8","548d89c41f68c446a33aff0f6c4015d80ac0e02a8967250819c848b65bd0f25e","d859dc782c82c74ccb280dc59f5304948d331bd754931bbfc7d5cf78fa1e65e6","7995e6186b7a8353b06396f673985dc7ad36363b3b45ee5b5cd0a793695af3a8","c509a25e5c0f44be022071f3c6c963ad3e2710215f259953d720aac00a3b6580","80d3971ffe4f456694de9ac9552f6f547acfb19a63c0e82344b7fa8158c5ac95","12795ac1ce805d8645457eeae5714b5fd076f6c739534197f0192494433981aa","c21a1b257beaea5e90ba876953b29208f6eaa4818a9e0b9f0f580a4232d14957","d5e5182f0f7c8fd9914bb5068e30609c7b7ba611edd3b96993f419056ad799df","ca0eb82709b8721be19953519075736e0e9884af9a0e7db695d54d1f9882c40c","32e069a2f4b0287d6e635104478f1ba230775bff6273abb1d5b04830933b2725"]
Anchored: 2026-08-27
Public log entry: search.sigstore.dev, log index 2612347360 · entry 108e9186e8c5677a787f…
Expected log hash: 8887b1619ee0c81e58d4da852c5197a07ff26c69d495e7acb0423596891597fd 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":"v1787799389869","kind":"published-quote","locale":"en","page":"theme:audible/price/en","quote":"The cost to use the app is reasonable.","rating":5,"review_date":"2026-08-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.audible.application","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 (8f6189bb14c6…), 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.