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 3140475820

Proof data

Record hash (SHA-256)

ea61d7c781bbee64bfee50ac0170d5ab1caa12056a1556d496bccf4aa042e17a

Signature (Ed25519, base64)

3dJOZ6MCOGmCF08MY2pGNykenWJCjDaohIlLXPDJd4Xc0CgOW1MQuTdNDIsu7PITKA07xIn9OAZFpXE2Ws3sBQ==

Merkle root

52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759

Merkle path

["ea5b98e7a6b7a4f19d9d65eac30574e9ec168f0b8c8c8fa866741eec83928bc0","93f2aba99f97cf686349d6fb45f7e716c61cc69831b3bd21eaf489c02e39b1ef","223850725ac3664ca5a6afa26c734cc6960dd769d2d1eabf33d363b05ce9df6a","10f384590d38f004bf549bdd1fb807094aec9c4591292f73476a17de24106d1b","a20df80112fa1d42a7887703483e3cbaca5840f00b710fb1f91e2e7a2f25e5b9","edaf8727b69e9fd7b823af4cda964039f897a866fcc68526f4213c9983dc6948","c1c06bb31f2d08970df7537b10dddcb86209b55f26333ebf9711159dc98db360","c828d9264070ec83df4505b32d2039e8af36a0ad1eece86ab7c602e4815546ec","a76b0efc9e4347e8372f9e935cbcf9bac6e7cd14989dc3c23bc6287adf6b98d2","50c52d98e73a886ccd4cd851aa603fa771cfbaab9d578c69078fe9f2b9d127db","f054b873a732dd907a1ab08f3948a416c6e386a35a7d1f35c44d2e1903d9d786","8e5b5f164b4138fd16cac15226197ff2d995652372ffc88c306415b74fb17312","6cdaaeb423ac3ca9e71d9b6b7eb5dc348e1fe6f5917591151d442780b0e12a0a"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…

Expected log hash

bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"en","page":"brand:fastmail","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 (52d6be1abed1…), 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.