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.

“Most basic VPNs block 75-85% of pop-up ads”

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)

2869fdeca6abc1405f7cc83e98a8075b0af6c826e4d86917a103fa58648b2fa7

Signature (Ed25519, base64)

frFV09aMG2ri/iBNYN3t4f6uwJFcOaaYhWImKYN2QWJthzgAT/cLpiDac+eLILeYciNYIF81RPXjA6y3GgvBDA==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["286744c1b9198b946d21e36f10721ef34525a2b925ab898d3bc9c4d4879e2cfe","a47fb76b6f983b4bfdce5ed0e2249cdbe86664df996c8e6ff58f9b9c2f74765e","b25f97b04e5c109ed46cb4989eee6cc7e2f9af43e46b48e9bf4bf1d60a78ea99","83b9913aeff3db6c1718128cfe03cea0c211d1a0598c080f470cb253609c9609","6beb217cbe75dabd6e6297a966323cfcc21c657470725e942c66044ee7ec460e","31231bf31d30a015a083f595269572873237efa40a87395e93c0ea46e88ed110","7e8479040ad72d341bf8f84ea54770cd047b84f82a0239698f76d3e31e0ecd7f","2cdecd47f3889973e8e6cab34c57ca739f9a8fb4f10223f869c1a6027a9d1a75","0866804e656a4cbcafb2cf042aea0a981fae7ddd6a2bd2cc39883bce43a55d0a","4d77d5cceef0f948dbc0957e476fb71d1da9167a6e0e0925d02e4d6af14bdf56","4133a15d2cb0da1b32c67b91b0de60f54c4f12d58d66ebb4c7b4893d1118f5ac","d610e3c549b439cfb5c1aabd8830cc14808b683b9751722225fbfdc069352079","b64868d5884e6ca103d8fa1886b59a755a471482d82618eec868304914b8e334","72f96e42060ae616ed33b8fd6ac687c1899623eaa8a351026bf33e2e7a041d34","e60c2274998b06992577796b6abe86bec144203fe960878f7951a3ae12c9e532"]

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":"Most basic VPNs block 75-85% of pop-up ads","rating":2,"review_date":"2026-09-06","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.