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.

“Great production serves all my VPN needs”

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)

21da17ea9c6d73e0f92872377314e9fe6cd92e90a44b5e830f7663b2de234b74

Signature (Ed25519, base64)

FRRvXEhuJtsSxGVpUVcmDw/g9YfO9Ul8Pl5THJd1KzjglqiBjsI8ERNnWVP9rEEFc2a3H/KtnT1Te+QRtwoDBQ==

Merkle root

8e481f891fa4a8f9e77c0279ca152fab4383b65a50decc840d9fd7569bdfbaa3

Merkle path

["21d39fc2a72a902758d0aeccf1f8ef8650a78611a71c4946ecdbbd11f6be1ec9","50f17d7c9348eada3bd4a5cba16c491eace722334a3213cb96a23edb2bfee52f","1d80a1d419bbe47b10620a2b685c06f1e864ccbf1b8f192d93b897d9ca527158","e844ec6cfe5b70d150c1332ba8644b8e5e2f68ec78dff7b8d8c70f4d7ca5c27a","e7a42139f794af4aa6f9182d7e410bb9b37c556b9c238372fb99b5d622b137ae","1493dcd743518a9f71da4680accc244afcde02fb6740a46d7640c67d6e918d1a","a24c7cb960af4e84aa4a937db189b4106f92dea8269d23e84f42811d10f055ca","6fcb95f06dd8361c65a272221e67c5b629ded0dbf631c686e2b2909c8581b759","288195a389e5d24b79a0badb2605da186708e880793573c83ce6a8c350f30d64","8332432fa711a03fa8b3f123b8c01321f423a3adb55dc27a3bef7d51146c98cd","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":"Great production serves all my VPN needs","rating":5,"review_date":"2026-09-06","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a9cd05f693341e0b011ded3","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 (8e481f891fa4…), 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.