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.

“it did little to stop ad generation by an undetectable virus or malware”

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)

ecde758ea122e23728a18429e754c4a7492cd9af26d04f5bd9370ca91063198d

Signature (Ed25519, base64)

POZlGYngN/dEKV/z+3hr3hYjpFBqXdiM5kwhlw/wvFDIa4emZKBezER5/T9fianzz3N4NfvCXcgxFRlFduGYDA==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["ecdf6cddf948de9bc0a23a94835c8fa85e48013d858bf7745bde76dee03c8a34","894efe39c8f783d5458d5bd5d8d4bb6d3bed40be7bee418049ee4c95616890df","c55a768e1de3a871472698f4738e8f4d9884ed66018358794a2055d71d401826","20b87cba2cc96f0f39725a7750d4f2704ac6605e43f1a068971958f6d47965a7","fabef29fd5c907c78b563863710dd35c1a6081600978ee6ad04ba064d40f82e1","0d4c8cf1f20b0ee868b7a8f3a078a66e4b08c4d612dccde388a5029b363d3860","8afd92c791bfeb7ba20baf71344e98523e667a6567239dba400c54fda4ebc8df","65ea2889327e2539efe51aed2ebd7563cf1094ba2ad851ebe40076b6e1403a89","17b91a4c9b238fafa8efa8930f036fb00a974321b5f082acd7067eb0e5523bb7","07649c667d24c9cdf38d064be796f03d5001beece8fe5826e2480903d139f6ba","07ab1c22014e7d6c9920a7d262fb3b3a7153fc8417804c16798771214a71d9e8","8be8841b862f5520d66c96a9ace469cc2bbd47fc9d2a440fb26a1f3ae81325cf","92ce7b112a5230537628edf62c10d3699180f9c58135530242c50c3d07cb3a9c","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/quality/en","quote":"it did little to stop ad generation by an undetectable virus or malware","rating":1,"review_date":"2026-09-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.surfshark.vpnclient.android","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.