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.

“Fastmail has been around since 1999, so I totally expected kind of an outdated experience.”

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 3177778280

Proof data

Record hash (SHA-256)

950beaa2f5b6c6c9498032dd21f65f271db60a80a45b3db0b1187affb65db2a3

Signature (Ed25519, base64)

wloaTr9oUS4dX0koPr8m9RF4N+DKd0h7RWKdOyrrB05v1IjWxqKHfwkjSB7vYLyRGMUXCAFn3WJlqTlz9Uy8DQ==

Merkle root

9bf5e8bc71b8f6d2ce627972b9fb81fedd792f7b02f32eb60fb8da440673ef59

Merkle path

["950ba63f95e1c0db1e0579a9edd1ea3332287761918564cb63740f56ce1efd02","37bc214db9307d99f359b699d0e72c86d4c7a4d0e4df9155d2de80531a6c49e5","20d63c7e05b4830bb9fceb34c22d4e856eeea55833c5c860f84b151692832a57","cb929da7a389d797f317566f56c3f7f6c833e06780b4d59f49c3c8c136fe7a20","c4984b898dec61ab646061f23e30b2d5ef850b3051d74a4998e5c4f85a451e70","c73ee04ed9b9162e25347d59075e4fb0ee5bc239e8217710a57157c9260c716c","fd7c5b404cdeeeecabfb1a56d1f9ab1449227db53d4392eaf2f968c8316f465f","34a862b226ba17d0a36ef70af3fe05548235127716bb0bad9c228ec909bfb852","1cd14faad642433ea2ce8aeeb3fb5898dec11981aa0bad042b91d9650d47a411","9f6cca6a0272d670aa75fe650dc6d2c1d75e2a1794ff4919ccc47a34b65365a9","6cafc1db4400581afe8af922d4d3b6c0da44187e7b9c3f1124098be00fa5753d","41463e83ceeb46951ec6c8ad9bc917aa51baed7fe823c51e10fb78e1729cda44","aa0e555b7739d6e04cbb925a0d34787576df4ae9ad90f53f6416ac2f935a93ac","e3d4f74560ebefc008080794ff80cf2bbc3851f4365eda6b2fbf79bf3ad31493","1fa7003be7676d7952d939a45bc47245b2ced828dca06428675c885e312c802e"]

Anchored

2026-10-10

Public log entry

search.sigstore.dev, log index 3177778280 · entry 108e9186e8c5677a59b6…

Expected log hash

6b6bda8efa0d998f344024bc1a70908bd21604d8857c81e0a6e6c5b1de7aa565 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":"v1791603230890","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Fastmail has been around since 1999, so I totally expected kind of an outdated experience.","rating":5,"review_date":"2026-09-29","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6abb071eb7feb58620359c1d","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 (9bf5e8bc71b8…), 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.