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 operation was really very helpful and easy to understand!”

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 3240231023

Proof data

Record hash (SHA-256)

18036ed0d0ebf1cb6e85ff9cb1a44ba8c18123a3dd8c89ee8194d15c811e4ff2

Signature (Ed25519, base64)

T5fB2V1xtALV4gHB1yqypPUMReDlolkIFDM6C2by0s7dXERASsiTCTF9jWpnaOQ2BIoxIEkuoKUWziXIpZ51BA==

Merkle root

888a38c73939ec95e6f226dbfb3637325026fcafc5a795aa4e227b811d6b2c84

Merkle path

["18034f8ba93eedbd71019f86ce02c9bfa58b943797647f443c43b80d16294235","1b6b7cbdeca0215bb17f59dd8ad2c3ce9a907c676c55d77d081e98f1d065c172","72c9e8c8977922cc081944708d660a00e5e97e228886b30310a2539f2d49e950","386cf16eb9fe640a5609708a337c4bc2aadc63fa6049389f120eaaf577374621","5b0b8bfa4eeee370dc6929b29bbad8f0692f13b25ccab6af0e433a22025d3c3d","ba43094ca498cc93bfea89e5b5e1b9a380ee38fd97be4611f7225f4257bfcf71","800b40bfe771afa1fc12d6cffb1e17d69c108b68d4038f1d9a9e779995d1159d","de0732e9d6768ae4eca1c3b2b960bd3b86167b775a443279eaf1eac266d5f94d","67aca940793f635301d30bd397257c28103a136fcbcf7f31d95900b71748134e","a5fbf0c21b8acc6c3c93b6bd5ee7017305f498f525f0d5c731cdd805e90d8c42","36593ff6981142345d894360aba2045a8b70ebe4ed0dd9f3ba3c7292169f7244","062cbbfbeb4fd46f2079783d29fb5f6cef5c48e70dbb9c2980860cd1d92ebf74","410ad2e8ec6f218bef120c1cded3462a092f61baab59fee462fd9704d436d66b","f46648ad2fd9f2769b9fc0ba1c434d2040de67cbd8b7a61df7b7575cd5a9206a"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240231023 · entry 108e9186e8c5677ac0ab…

Expected log hash

bc440cd3136178aee800fe49b9cf2e319542a645c9abbb8553c6ae1e354ce201 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":"v1791860805798","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"The operation was really very helpful and easy to understand!","rating":5,"review_date":"2026-08-20","source":"Apple App Store","source_url":"https://apps.apple.com/at/app/id1391782046?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 (888a38c73939…), 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.