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.

“I have only had one billing issue. But this was my fault”

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)

b488a367731de70c511764678c54c0b6283baebc9e971b799e53b9bbd5d77c50

Signature (Ed25519, base64)

CB+62i0Gh1rTVqW0NU0wV9XxzLgV/WLbWiyhL7Afghmb4SIxtBdeXpdLljroigP3xK8FOSET8zBmHxCIcRUhAA==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["b487a2582226fa35bd3e7e555c40775997345b59acda5117bc8542d077ab9c63","76fdf91204063d6feb0ac988c17adbdb5b4f6d78371b89b9901a7dd9f5ad66df","5daa4ae04d5ac8a3006e68a1eb6a8a2fe63663d727c344e16ec20f994c59df56","2369f0b1586316455530c5e1aabd82cd1d3f2052e497716183b8f18e356353a1","ccd908994c94f2c2868bd82c3d7eb1a9cc944af2b0fa3306ab14d9a6ca1aab9c","9a86b9c3c210fba0db0dcb4d80ed6e18b2626aa05e11fdfc626f0638472b0245","ccec21e8eb2f3f0639eef626337efc4fc19bb87c24fa853e021c287fecc278b4","b34a75d6d419d1f1429d8552baa0ab6abd2461ed83c74f534fef4c5ba0cd2ac6","253f453d6a1e671f6277e88450ce8a5aa30430a36dce7a1cff5f7657fb54746b","6bc65af45321a3cf695df3605ab7cc9dd3550829855461acb8961d28b0519c0b","fa0ce088a62a1c7caaf40cc93879b230bbb7999a92bc477470541f632642fdb6","ff50dd1d426380e71f5bdfa424955df4d07dd0816370e18fc84eebbbab29d5d1","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/billing/en","quote":"I have only had one billing issue. But this was my fault","rating":5,"review_date":"2026-08-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a8d93a5270bb2ed639964bd","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.