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.

“app now seems to be focused solely on AI advertising”
Google Play · 1/5 · 2026-08-04

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 2515439294

Proof data

Record hash (SHA-256): 706254b6a698bb17cafcdcd577b074b8baf4a765879cd34b3eb15d1a4465c0ef
Signature (Ed25519, base64): ZwrZWp6+fwB/MvErZzTs8NMLL7XRQK+Ggdy/Fvps7PIB6/e4/1ZEo/k0qLk54wFynpyPWNg6BbrC3fQfc5ioDQ==
Merkle root: 8c6268a14330d1a3403c561e774645b0671f81571ec1735d4674ebe1de7502e8
Merkle path: ["7062671862be9ea1152c00e89b7e840c95f3436fb16439a4c5c63a6cb9167b6c","dfa01c24a741128482b051b440ad4ea11d1023ae1a7909e61c51347345a9429b","9331ba11c54c20d6661c0d0649dd100812786fed943f03ded328d5f2be420546","e0aedf2ae1f0a7db7286b5a78c0a231bcd0d477a8b3facc31dba5bdb86c0eb61","cbb18637dd5adfddfefa2f59850dd0d468eeb0e5b2eabba43122ba68d7f582b9","d2d7fe5acc6959f0b1570bb42bd490c89652dd68017644f6ecfa7d88073b4a9a","de110e714cf48187f967550cb5d2ccb0bd7eda636d913f7e7d0d9861f71cd14a","81abefc528cfb6e9047c9d927e3c4f43899eb7d46abb03bd9ece7f03d9628b24","5264b7177fb7e0738943a7ba9546cac892e754c616b8429bd1bcebd14b6735fa","cc64cb7b3649d0e908987d7f35ae3da4d65ec9b84b306d1113a1f903800d82c1","56c4c537a9c4b89bb67e616e0e15bf4d68149860a6c83abd0a543583688cebba","da59334afa2d819633e90b55a7c9b28b3150a2ebd2ea3f870365a1df4a927c16","747ba0b6317c3750e6242affadccbda44b868489e275092a024dce997ae773a2","3a0d3c267d2a0d179768ecef7d342dead457fe1d4866ccc6b84c72a8362e4b38","f548939ab1bb46e2c6638c372c3e2eef0d561ad18c63c15229fececc951e0b3f"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515439294 · entry 108e9186e8c5677a4f15…
Expected log hash: 128701fddbb19410bf57cdb2d04d7a0278d13bcfda6410d76f176fa58341e1c9 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":"v1787141082461","kind":"published-quote","locale":"en","page":"product:acrobat/sign-pdf/en","quote":"app now seems to be focused solely on AI advertising","rating":1,"review_date":"2026-08-04","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (8c6268a14330…), 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.