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.

“Surfshark is a very reliable and affordable provider.”

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 2776103867

Proof data

Record hash (SHA-256)

d0468b64d319e0fd3ba138a8b33eacf87d137b98ee870ae6764dabb15e219489

Signature (Ed25519, base64)

2d7C41+3NbPSGqyJrbL8sQiuHfeU4dhR3hfTuS+jrshur+sDlBP7SKmgG6RBzE/AoQUwf1OjdstM6o/RVPDuAw==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["d046c62d35f1bb2d67a80f21b69af81c32d061e488b136a73179819883cf65e8","94d3e1ab958c7ed2c967c24ef02cd595a3e1033c62cd60bac7d90ce056279c42","f3bd7460a45e080187c35c3f92f8da86886fae88c4c5fea937bf7968702be5c9","1502299b9de9b8c65ca6cc50b036de0a9b0e28fe3d0827954966311f83dcd70a","d1ca1daf6aa19dd0970d1f6df6080fd80df62bd865561977d7bb8270b1c7c090","8a7184e4b51c20264115c8b9cb575f21bf0009c5f550680dbdd465944542eb8c","76c61fa74e8e823f9031d8c9246a0f3affc97f43b447fc233617c29feb474d00","8e72c2fc9ab7bfcd44c404a4c7259bd2d4d12d6f759bc7a3d9b2ff9c61ec27d2","1061396488f901391d8771e375f6416d69d790a3ee7e6a0f615467ae86cb4724","3f219f643190ce465c83e0db3cbb1798f0d28305580c700f94b357c210adccc0","8ae43f764a6c923e22bb9e8a064b7b74e810bd722a0010d60ed9161689181da1","ea302cbe265c8dc3387d0cc3e68ee3f50565bb74ab154f55c34efa7e7e75395f","c9f1105d4f80db6afe27e70c9e1c7fa8740faf4babc45eaba315edf5ba35bc67","6ca8568b4e7c7e4e3b794231ecbe4a3822994a26c5f3f7fd0671946fee25f414","66f93059eee3676095d6925b7cc2fe3b97c348e816a4d3ce47c4b00902d3a227"]

Anchored

2026-09-10

Public log entry

search.sigstore.dev, log index 2776103867 · entry 108e9186e8c5677acd4f…

Expected log hash

2498329b7eaf275d309293dfbac35d05dfb8a55c65956add8448561c05945f28 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":"v1788848066028","kind":"published-quote","locale":"en","page":"theme:surfshark/price/en","quote":"Surfshark is a very reliable and affordable provider.","rating":5,"review_date":"2026-09-04","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a9aa0dd9d9804ea33cf0a62","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 (4dc0bd79ba3e…), 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.