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.

“This app is not free”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
1492159c8df8c60da693b7ba48e014d2c57902f7ec64852ab9c1b073a6626f60
Signature (Ed25519, base64)
jPGFqun/XGsbs1g7LC8O/tMvCfYKfd9fOrYBRRQpBAv49E4rcP4ic0xtBkVkqZTsPgJWEOIO/yGG8IguvSKiAw==
Merkle root
7533cb8d8c04dee23596d4ccf0908b735d91b81fe92e605e13c527ecb5deb2d2
Merkle path
["1489cb0b80da7f25f6a12c06d34f939aa42969129d1cedaf4db8550f863e035b","ae5e634d336f34c2c6e0dd580a02587759323221065dbf7cae13fb24ba187f60","fc40e91d7c9afd4404bd405839c8291b16d55ef4347c19321146fd4dc8cc5c1a","9827ab8131a776f6e32c6970a79afaeeed4e8880532d57215950c70e27f5641d","3010d8c683a09ff5d7998b6256cc3b2b0afc5c2ff7c56079ac4a1c4789466160","a8ff629e639546d1fb8051c1707080635d27274bd331f11478ada99d5ade27af","ef3aa147d28f056e8c865ac6d38532a60ce700dd4a8e883ef3f6a6938e9b28bc","3178808337c12f68f2a8bc46ad0e6ff03a3f102fa4ed07a0bde7425bd7c42b8b","a665e36852114e8e42f27b5a218e6d1046bf7f13c1001f1551c8d7f5b2340322","18c5a8b23b6a5cb7893b9cc4e8225b0c8e62466c46ee35a3bf672267a07a8ce4","689b1a284b8a44a437da2dd8aa35cd28112ca06294eb8fb9f0e9f43b406135c2","959618116f7bff6ed2072830f64b1ea0f4df8a2685ac6da49d6c45ba87916262","93bc8fd7f71ba29ff353e3337a18e3fae8da5d9c75f2209b2b67e1af3660ae8e"]
Anchored
2026-11-02
Public log entry
search.sigstore.dev, log index 3637411721 · entry 108e9186e8c5677a3165…
Expected log hash
5dfee0cb2ef036a9452adde296e783557348142e751437e8895b161fe04023f3 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":"v1793587829781","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"This app is not free","rating":1,"review_date":"2026-09-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.surfshark.vpnclient.android","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 (7533cb8d8c04…), 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.