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 3666413656

Proof data

Record hash (SHA-256): 13bbf94a94e86f14b7a2cf0cdd3e4ba9bbce1099d6c9e5ea40ce952efb9b9dd6
Signature (Ed25519, base64): q5QSM1uIYHinT2r5yR/XB29c4jQfp9xlDRRnqt4yvH+fBACBs0EXNhpihBl3qLZcaI9RSgKb66g9ZJ9fPztBCA==
Merkle root: c0f36ee0335bf71d5c03ca59b0f191f950cfafcbca9602c3bac8b2183aa81d49
Merkle path: ["13b52dba5349c32bf14765a1bc5d9e8ed9f0a4570ba2b1b34935de0b67bb70b1","d1b7cff1de6b78e66d5c0e017af8836af322a9f8ad60a899b20b4c4e15c61cd9","82fa5e6e050775a041e213a0b19b68cbd5324839187e4f55839802f2c248d2ca","b3c586814403055e768170f373dad5fdf55f47d063dbe65dc5e1398b90732e76","9ad9f142223f45d747f728659669d0fdeae7891eaffbc67db723efc410b6201a","3465322c3db6d444422b98b91ba196d7b72d22994f34b46489c7f434c3eeaa28","3231239f0dac0e511f6a33a5cc65916430cd7ea3aecfd398d25de550d4a10dde","d328e1d186d65eb1589669039f61dcdf610147da68f75f048cf7030d621b4c47","5be45294b2b893f916d24f4dacd682e9deda38dc3a1c8f98862cdf7f690e4b70","83b1dcd2c2add49b3f0855a027f47e438b2f46a2accbf5fa4fb5f8651d8409ae","be5b621904c3c26c98d16d2cbb89bcb78a3e53c55fc14229bd5b5b77f1f59015","927de500e960266e9b12c9524aa43fa0bea81f1fe70a1fb15680bad0fd81e947","b51875ca42ff32753b93a043ad0f198e3e1ef2fe1aedf16283da4cd1b4b1d542"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666413656 · entry 108e9186e8c5677a8e86…
Expected log hash: 0d2952e2a04951edee30f820ff095b505511cde698e520c69b8bd5fc03c1eb96 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":"v1793701189085","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 (c0f36ee0335b…), 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.