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.

“Unfortunately, I missed the automatic annual renewal”

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 3258071454

Proof data

Record hash (SHA-256)

190c69f6e641fa93f430cfe6c11ea649f1eafcf5c0607502959e82c03e3856f7

Signature (Ed25519, base64)

FyzNRgVkIOBEU0f9RNgfQXP+7jqy7hpNwm4M+YpgvvFHSGC17IJ5cen+fb77MFv7HhvIpfBJk+tFuUJld3+BCA==

Merkle root

3286418fc06d25de584969d1d1d5f4b079918bf6b5a5178364cae8b78bb351b2

Merkle path

["190d07869a51c4fdf3d919ae60be1f41a7e9654c91310a3e0660ce7c9c6964ad","a4fde83baf62edb54143698d0c478433fd7da3617e8b9a734153a5bde8e381bc","652778eabea9ef03e7d1ed36051e0c8e1ec1b695e686812f6e31621debd95430","11a2f3d6d8ded8ccb75d5ed52413513371ab2afb1d79ccb6cad42221258d273a","25f852ccb1cc2c84816732e8f0c1a9b3f9ed69865bc72e0130abad3724fbc434","b933abf7cba1daf7be2b655a0b3a351dc52995689d73ef62048894445dbae663","6cfeed438ac5a87eec1041ca4d2bbd1d2a19c7cea0727e9cab9cd89e409a9c25","009ab395621c49eeed73c7120211c80a4ac4f7ebc2448102d1b0e2f82e142b3e","04bacb9493906c7806c0153a4e8e914f4928bb7173d83ebddbe6e752b4518471","d604c90513eb44b132511e8136d1a40d3d0e20cf1ac8827a375f14753e345e92","1d1100be7a34c450ffa8104880455cbdab68faab3fcf0b9a1902eeaa174e1fc3","49e05cfef927266c6a609e22c205c5fdf538ab222e94c5e3282700418f88dfb5","d9800b1b87d047478eeb89f8a1dda19593d3b273c40fa6d591a1b944763f5e83","b4d8773b8032d1dec9dc6fa4ba1d52baf4d9efac6a7cb542ab0617b855dc5284"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258071454 · entry 108e9186e8c5677ae2ee…

Expected log hash

f9026b3bdc4a2e986a01140b2370b0ce9ec3e7c9353055dd7c9909c6a9941809 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":"v1792030101458","kind":"published-quote","locale":"en","page":"brand:surfshark","quote":"Unfortunately, I missed the automatic annual renewal","rating":5,"review_date":"2025-12-30","source":"Apple App Store","source_url":"https://apps.apple.com/it/app/id1391782046?see-all=reviews","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 (3286418fc06d…), 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.