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.

“Their security advisory e-mail not only told me exactly what the problem was I was having,”

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 2789279696

Proof data

Record hash (SHA-256)

00c3c3be810b1b6439c49e577e230f7cdca17b8fa3e91135bf1346c2ade068a8

Signature (Ed25519, base64)

fKYCpoETi79UcCovhJXy1Vn8qKEXTvU5qK1UkVdyGVAYLUI9zUzjZ73oQHowJe/1PdW2GtnxnP6Ffy+QEKciAw==

Merkle root

97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d

Merkle path

["00c5fd00d38dd0de6586d8e93e6f49ef4a74115c646000a7b3f1a813c1984cea","7a1b57a9c07cc6ed399cab0010688a4bf6a374e954dcf33303bb8b5f7adf5a4b","6769d5de0dd91d54622209fa118273b95b9ac4daa0679cbe94859e81bcf68493","5b1748aec59eb4dfe89ebd1e9f171aa66c7ada0e9e40d068032e63783f14bcff","423093665924707893fc5b28f9ad49589762dbd71f8676d5afc417a3634e793c","d1658e8f5f3ece470c4450f554859d3a3ce57221a97745afcd08b5a948c0e815","6f97895648b53bdf411b6a6c9451648372b0e52218d16fe8ba84e6a294c26318","1cc16aad6c6d94e4a5cb5f1e3596142b2e04f3b4a4ec1e2aaea1d358eaeda023","5d9d600f3ded5efeb1a87066ae4743f9210bf4ebb08010d0a026b8bef89e4f0b","d107752bf8ae4d75701e518a4f05f0eb4b551e1f5cb567f319566cb1f61d0db3","5b9b96529384f7bb81bb92f10de9b43784ae20d39c933bbf96b1bb4c3548928e","6c14202f6f4d89338c781140a2504c6d469b19d300474270ba84f87831aa8464","5b47260d99d2c4ad6e0d963995c990c8506dbf10eb0b146a116c3fc6ba348071","a9559f2ca8536f2c18bf059f3f0099d62235a93ac35dc17b09967d392b72be7f","01242865574478f13dcf9d888236d7a907264abdb87f360db7db06de0945075a"]

Anchored

2026-09-11

Public log entry

search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…

Expected log hash

05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:fastmail/communication/en","quote":"Their security advisory e-mail not only told me exactly what the problem was I was having,","rating":5,"review_date":"2025-11-08","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/690f4fb435a243acfec56a29","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 (97eb1062a862…), 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.