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.

“we know that our information online is secure”

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 3241341297

Proof data

Record hash (SHA-256)

28c7607b25eb9b257de676383ba0d7a3d3d363992ac9a4fef5d9e3c242d690e0

Signature (Ed25519, base64)

O+2EYl8Q1j+9n7fYz2SLGSej/Ayk4iCZlX4a6C2TEG1wujmmha6sJ3z7c53qmDGV63myMHj79nKSIGkf+rzCBg==

Merkle root

4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265

Merkle path

["28c925ab370c2100db85b60ec9d5c86c7e452383668390907a78a231b8f263f9","55443ce7b9b378a3147b5b0011eaded2bb0f24f7a01314f6c059b1244d2767dd","762fa8c894b443a4ef71347cb865b9a3c182e06768d6ca6bb24148d5f98091b8","604de10bdd9d828a3a287fdd7606eb1be401b5f3f48ac9bcc33391a3da60b14a","6bdc0677955a057e737ebddcc95ce32518404b7f65ede6ee68f1fee3bf90d8a4","f92ac29a00683cef26c0ad13bbc0efc54b0b799b81f67e105d8373ebdf66b45a","21120699d09ca84c852702a24b6d88f9a949e2279b0422165b1b6b8cf0b90126","7895aa748a5cb6dd4765db5a13ae113f2d2ab83df4a6f89660b9048211c52a13","f52b4ab91a140f235c11a4b645f25b2cae66c158561c5dc2523e3ca38c1106c9","55fc0532012e9bcd29732e8f53eaf47b703b2cf52bf462f69de9e27ea80106bc","869d5c71bdc11cb98278f8177533edddd28deb9d0f3c678398dc6eb0ac9594a5","4f4d0831440aadf9cdde8508ea8672cceb008a30da8e04261a55c46ea8a8ea6b","acc667d852c71a0e84a086ab20f7bbad3d8ae083a1e44cd20501ad641f662bdf","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…

Expected log hash

39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"en","page":"brand:expressvpn","quote":"we know that our information online is secure","rating":5,"review_date":"2026-08-30","source":"Apple App Store","source_url":"https://apps.apple.com/us/app/id886492891?see-all=reviews","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (4900b1080bdc…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.