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.

“Very easy to use”
Google Play · 5/5 · 2026-09-05

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 3220367991

Proof data

Record hash (SHA-256): 31849005fdbc01415eed154ab8c4daee09f0e6160face06e7e19fe9f335c2ece
Signature (Ed25519, base64): W8Qwnr897QBNyJbCL0pzGZykcfHzOJsZ0Um8iRsm1OdBCEpCSllsUvgGg6I/3IsE5eJHcXok4oEOG1cdCnxUBQ==
Merkle root: 8e481f891fa4a8f9e77c0279ca152fab4383b65a50decc840d9fd7569bdfbaa3
Merkle path: ["31758ef57fc31d9a42436e186ff7db92333da29f02c16c7740a3c37528d1e417","52cc245a7321dcdeb88942ae7f6146757d5e94637da24e0758366cb0e71f53e4","53f1975b4a8d55ab1a6b6d7b12a35dda004c2e54a5613ca0167ed29190cc28bb","4ded8832dd89ceeda1aaa7a5b0b64a7a38669f508ce5793ad2231c57768e299e","dc2ca5df410c1a714068446dd3f8e8de2d2187a7d4a71e41bedd861d9587904e","85f8820df6c04257eadf758637f1c71263400565006d8b5d693a4cb846c2470a","84340ada48f90deb3fb4a1b72ab1fa51b200bc7478bea05b454b77092cbb8213","712d1c505185946a6b9b9191e0e275f45d16a6b1ff18beb32e22c14dd25a6d4a","05332a25f4eb056a4158d21d82dfa11035dbb6da2aedd88a982e34c251b1a536","93a5bf30da5c3d7728a4ac8e2eb8aee052ce4c540659d9397dd679935c4e5eae","df585a3f11b338f1ce34579b95fa100361dc550eac6e7364ca145aaa87cd18b8","a7aabdc256e01976bf56aedd2750701f155d95355e126564b57f87590d7c57d7","f12c6d940ab3feb9a920f8708be9c7f52b5aa4637463f6ea0927f2330e210f4f","391099ea13ca712ab4d3c0ebed9ae37f021122ce33d031a4f3442fcba2038ec0"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220367991 · entry 108e9186e8c5677a60ce…
Expected log hash: 9a2b3ddad9c3b29dc171a15554fc81f3d4710c01a7565bd2f28b92e7b639f6dd 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":"v1791776812348","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"Very easy to use","rating":5,"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

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (8e481f891fa4…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.