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.

“Mr. Gregorio helps me to change my primary email address”

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 3177778280

Proof data

Record hash (SHA-256)

2abb6af4134fdadd3f5e90baa94ac3f27423a2caaf3272892374c5572b48dd31

Signature (Ed25519, base64)

kULrLxPUgt+OkNfo5KL6pFRNFviApQhXh3vGdnECsMT6r23CzTHOe6tO+WlKuK79qr2ZEtvgVgljxGr8Xj+kAw==

Merkle root

9bf5e8bc71b8f6d2ce627972b9fb81fedd792f7b02f32eb60fb8da440673ef59

Merkle path

["2abeb8f4af9552560e31eeecf5c66fbf2e50646dc1addf0fcce6c6b2ace295ff","092f482ffd3ca25a4312eab3e3c72e4d5936522f38169c177ece6307081afb2f","02602cd607620254de555b8b76f3950dc4ff27ba96d83fb9250599028c9facfd","5e7de6d87b6a74446061e3576ef3eca0989591a7dee7ef182f85f2567064a61e","8426c603136877f4d309d03ab9f4357c9763ae5e5003be2ac110215e7bbe6088","bb8f0087e4f2fd971f035b03b338efb4cadf667b3b3815cf133e4a8e8286cc1b","96bcf6baaad7500f5cf3299d33c7f13c7190eef0aec729505afa4d0b1752baa5","f704cfa3e45ad8d821fdbe86f23b640cad6f771d52747fb4adffa4c3803524d1","79c4c83d2c5fcbb67a6265cb3c4a25ae7ecd7fb654d27a57f60724c7ad954249","59adba348ff21fbfa810849769d15b08a305704177cbdeae4a1d80dad19f4398","633dc26335fe45f33f3010a4079a2aa60318ea8374c045a7c9c1cbba090fa33f","53dd6904824ad544916531788d61c0e418742b30a49a317c1dc2fd8a01bbcaae","fb42483682b3119978267e05c9c995226602ecd8627ec630ce52b285c28faff3","09f662acb98b118c251b87092b3ab5baf38f48e2410961a49013a1c2f63f4cf6","1fa7003be7676d7952d939a45bc47245b2ced828dca06428675c885e312c802e"]

Anchored

2026-10-10

Public log entry

search.sigstore.dev, log index 3177778280 · entry 108e9186e8c5677a59b6…

Expected log hash

6b6bda8efa0d998f344024bc1a70908bd21604d8857c81e0a6e6c5b1de7aa565 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":"v1791603230890","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"Mr. Gregorio helps me to change my primary email address","rating":5,"review_date":"2026-09-04","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a9b04295bfc6b42054c4794","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 (9bf5e8bc71b8…), 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.