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 3199014646

Proof data

Record hash (SHA-256): 268074b0f5c5bff061e451ad9897db6019284bc3060729e31e54b15b9a7baf31
Signature (Ed25519, base64): f4Us3E2KAl8Nfy0vy+j4btHqoV8QzEYRkYxxerJhdqIjaHPTEcrK6nXguvlvSZLCy+EsaxhkQ8nWHs4gDf4DAg==
Merkle root: 79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6
Merkle path: ["26836ffd664bc4c16ee9138845a181ea5f0e7d428b12b4f771f6e0dc454426e2","c0f8c06ede1c6d50dc363041df24fab20ecaafd5ebcb33c7143441403d798048","8c3b96194c29567834d07af676233c008177dda8c52bf43db1b611cd18923c26","d8262869202090a9b0f45fa0238a4d523d957c8cc8164246cedc8323113b885b","42a06b63054a634df60c766c66bb4ebecd895775110b831146df1dcbc0abc327","76dde962a4782fc086565c99368433e08f2be47da5ecd4c79c6a48e012b47417","270416a7385617b5309bec96e3eeb23a2ad922a5a0f08f47332041a41bca227c","1da38eee8f7d7bc2a5f4f5265bebb4ba2a4f9275c83bea093a41c64405c02832","17c093756a540cfa25412baa3c1c5853b3fdcda860c0129c4e2082593fd687fc","4595cd41d020b459c7032b48c73b102d4a0bae807870909b5e85d6b1c34096a4","5a1e1b396c4abc5f483318c0b890917f1ead6301ec76c4fabaf6c23b0d600b19","74ec616be75d7ddfa42f796ae5ee64734ee2aef3c18f854d94e8278d3c2de665","ca0926b42bcdad354c17320adc5661c1a0407072f1d5c01424cc2e7f9a3515fd","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…
Expected log hash: 55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","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 (79268b3be1e9…), 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.