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.

“Satisfied with the 30-day money-back guarantee.”
Google Play · 5/5 · 2026-04-29

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 3140838741

Proof data

Record hash (SHA-256): e22064133ddea8a919e7936ce4719ff40a54b7161ca2ca5542ac111e0397229a
Signature (Ed25519, base64): 3QsCIqJQkAVQl/9JRrhPioGqPUojHUxtT5+0ttZ/SqP90/9kaCG4ZKmje7GywYZLG1vn82rkR/VkTSxSvR8JAg==
Merkle root: 68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082
Merkle path: ["e2207a633f29ee39260313700bebef4c4a4bb34e28ad46fc400a4e3e37debb89","771992fc35757fad1e8a94c140e7c65db8395d083c1ba541084e283d52f8544a","e1e5cc669650f3f0188ff4f6cb3f6aecf05acb5ee326c87c00b699bc3c5f4479","5650687a8c38252ac4c5089541eb8d78fb232e96da355157008b1d019c23a58a","11b5304344fcc5836f50c0ef96c383364e41d587724317eeec9ceb87e6a831a4","ca9eb649a4b108c4af3271e899c104c0748c18a6adce844327004d7f4579c464","23b7b0b4cd85aa00fe1c680ec5a84afbb4726de3f34a171ded26052703811e1b","7c93f56269301ae4098c536deb0476ab47796a82d2ee80411bfa0572aeddb871","019862903869beb83703daa6164753d25c64a27394069167453ab2ab415eb0c9","e5376923dc25907972e37d1b60c75ace27b6d500670796a6e5b3106b7b30baff","81b8931c015cdf06659ba0f9ccc0daa0f62824af01921e24653c1e546a4c5b26","f406154aae2c44f1794f6b50643080ce6a776c688e18283a272eb008f69d5ee5","662e3ca042b912b1592c5eed9922bd681d278213ed7e0626715348f767464eb2"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140838741 · entry 108e9186e8c5677a4791…
Expected log hash: ca4949400cf2d29b49789563ea2e672fc73762380548d6fd65398e40c0d98728 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":"v1791433229105","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"Satisfied with the 30-day money-back guarantee.","rating":5,"review_date":"2026-04-29","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 (68ee5f8618d9…), 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.