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.

“delivered useful information in small bouts throughout the day”

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 3248278454

Proof data

Record hash (SHA-256)

201e5a7950a4093a63ed39314dfdf2dd2db887a89763e0395fc904bc865ddce2

Signature (Ed25519, base64)

4i+ZALK5DF8Xqr0X1H6JPmXb+3ji1WtwOO/o2KQ1iyaDHVRgbPt/B5CyMN3vqzgseqcuRNX77x6bYx/y7iojAA==

Merkle root

81db1abd6b6e636da393518bb64e907fa9c48581b44ac2be5a9e74d02608e451

Merkle path

["2021d292b63ea2bede50004f8d0ac8d4efd709a70d63e2c5f3034518c8c5d870","c40ca56ba47a416245dd647a0b4c5a8c03860ac4c123f527e49d945c2e23973e","aa22f73712b994aed813da1c1d9cb7bbbef1b1a84fc35719709c6de88da15f3b","6a1c11710b31cf533e39d2c6346056406acb150e3cc236c858ffc0fa205ec949","7a17e403342589f4395b9f8502570595a6c073a2ac90d00e13255e443228ff20","b9b2d37e4030201e43ec527c799718fdefc2d358f55592df7405c0af558f249f","0c436dd40377e9f28d46c8906bf4a8989d685c6fa808f66482689121654b62e3","233895a3166ce3ebff9d31fdc1f452078d387eacca6ef5c2f467ab67dd9b4393","dcbc11240fb9e61f1dcc98a7fb812d9ee5e41f054d3dba2a91cd25fbcd98d5f3","7555ca7755ce0977aa97344e9edea28c77141a78774910cf9dd1ec7f5be52ddf","f0d849fe2b2b2e8ac46eb31ce8ef0940645609e0ab080116168fd866668ba7ee","0f8ab31a8b7f9aa6ba4ff019c72fbe9792e5837d40b3bad40ea1cfb0cc79e40a","4fd1b36929337d346b3723be273df6d7588bc7b080f058260d538b3f309857bd","6fa310e475466f0115dd6b7ba199f23e915f2a513e2610274356ac5bd367e940"]

Anchored

2026-10-14

Public log entry

search.sigstore.dev, log index 3248278454 · entry 108e9186e8c5677af67c…

Expected log hash

4dfbbd25ce402c4821f7e2d50b18e091e9a30465f45669967c545fb71910f358 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":"v1791948368672","kind":"published-quote","locale":"en","page":"brand:expressvpn","quote":"delivered useful information in small bouts throughout the day","rating":5,"review_date":"2026-07-31","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 (81db1abd6b6e…), 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.