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.

“Mr. Gregorio helps me to change my primary email address”

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)

50ebac56506bd69af580a115f57eef5f0a3c71fe8ca5cc51de982a4c268476c3

Signature (Ed25519, base64)

F2FL59zyuwA2hyXDQg7JC/lbFXdmf7lqXvDOZ9dvrD7qFLQ1NWMlJRsnnL7vMOJvGHcAc8QcLYhcZpMPulnsAw==

Merkle root

68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082

Merkle path

["50eb4f3012c60143061f86b8a4e72e1445f5c1cde22121a7a9d2fcaeb3e17768","bacce5b3ad3875aeef87ee90fc1344ba599fbb6df8fd37c22452281717395167","06ddb0f96ced85284544b2c2ce67c85166b94676ed85208b9ad80828d6c3bafa","2621371286ea326556e7ab55e7a9c37915366b699bc9a74fa269fecaeae9d52e","fc98f624b97f1f685cc96aac52ded3f15e23f70030d3f12a41ac9c148245d191","721c5d3609015ec1836c39e2c27b9c377e2073060dcd8111cd3a1efa27af1f32","6d65136caa7950c6aaef3867b990c52fd75f8308ab264fe51a371db96ca43ac1","01e2b47a20f44814a470de6cb22ec402ecba00ea82825a333397c6d2c66f8d32","70e4e82a981fd8611d2e351bd2edf46e0bf9e8af68b9614ee5780a1b18a491b4","c2389d10203a24e3b830eba6c155c45210c3554b267e2c9a3891c67e78682540","4959d9c0aa87a08b0b6035ebe7485c4d8104e82fcda44d9a69e3910c45433f02","c6e64e12e0b8b2f5eca9fac3d3f3899ea445ebb78d97caa0a799132e0d17d541","71e82fca1bf2ae48cb6a9adcd3ce0a0d0fa2dea7d80e41cfa26b2813f59587ef","e66299710f80b56c392136748910ac59d79a991f3e479ea8a96c5c23e200aa78","418554fa0ebde54d6cdcc03145c7126505ed96d3734e8e7ae56dc0dfd8ca0a2e"]

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":"Mr. Gregorio helps me to change my primary email address","rating":5,"review_date":"2026-09-04","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a9b04295bfc6b42054c4794","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 (68ee5f8618d9…), 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.