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.

“Great communication”

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 3258717636

Proof data

Record hash (SHA-256)

19031054aa5476396a0565f96e66e15b7217696cb323ee46d22863a3ee07b79c

Signature (Ed25519, base64)

pjoKDaTuvPj8qolPjxid8FHop5ZeJixnUV0XIDmSV7ufoHAgPrusslLMl3TsE1/Iy4NJ7RLfsBiZmM8JOrZWDg==

Merkle root

c1d49fab62e94ee1796f3eb15e1a21f856756e9a68ad117a17ae6c9694ffe1e9

Merkle path

["1901d5584bf4d58a60cc47dfd950266d614667e8acbdd7318f22e740d3c7802d","fcfe5d94ad5c88a2c726b2f76d555d6735e9f32cf71f982b04c2d6fea397cd41","72ada27e90d57a55e1480dba522c84dc484798eb05753ced80ed46a7bc5ace2d","22544b38de90e40878bbb66323e7a31154806a77971e5fc0222f03c8ff21d7f9","03f385c88b27849f07ce530eecefbdcdc92933d3ad977ad0ff15b6eb12d0bea8","c8e1243891df2b9d35dc33f38b3703c01b46c3a9b8c235fc8cd7b20c0447548c","85c33aa88e57b46b6ce44b41fdedbb5967c8665951216e3da8fcbc71eb117e6f","3886bf7665d0acee1ba0d376745b75525a706734f857ea41e74188a754b953ef","eb9784a5d7aa7ff35c03919a2f11331de2cff7a37b4b32caec7116b89fd62ea3","ff25a65eca2b7ec4f4d9a166775f2c868b6fffadc9f1f205a339db799fc3747a","d548028ef9025b3c22d524c1f1d85be654856c3ed276e6e4b719f445ffebfe9d","219bd599cfb89fbe7096defae6a66c994562ac0a422a5db43368bd9cf9789683","856d9a6a3e94d695a98fa0bb5ce8d80e9fc70a3794652b53ea754ef3c0720b7a","436050ea3288f64644ca44d910bc166b737265d33885dda72495c78f7429279a"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258717636 · entry 108e9186e8c5677abf47…

Expected log hash

30640a6c2a3bbbd5aa6e5244e634da7339a6d42d7209b3c3a5dde0fcd662474c 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":"v1792034121129","kind":"published-quote","locale":"en","page":"brand:expressvpn","quote":"Great communication","rating":5,"review_date":"2026-08-05","source":"Apple App Store","source_url":"https://apps.apple.com/nl/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 (c1d49fab62e9…), 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.