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.

“I finally pushed myself to move my email provider to Fastmail and I have been delighted ever since.”

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 3199173952

Proof data

Record hash (SHA-256)

3c037b47089174759a24eab1f96481529577919f937c98693ed0ba2d481b6191

Signature (Ed25519, base64)

+i44kMnyDKAQ1A+Ijr+VznrX4T2wM3nr/vlAFJQebjhr5OA20bjbmPaaqGiI6YTmUPVETVwYoO9o/Hw1NWciDw==

Merkle root

ffbc979c8901fdf55f43c5151768b18a738fc1c271c9b2dc97349c3fa8ed35d2

Merkle path

["3c0ce03702cf8d35601a4039c42e2ec148eeaf7b067f4b6acb8155f7450913c7","a5189fb6de9596e61b3dcdd495f866c83481156772ebee59d3416bf1dc1462ff","787164776fee6fe4595b53879cb3a0b8a16c9a48380b31e6a68abcdc177d8a0b","0dc560240c69b032686163977bfd8a3bfcb9e63c8a738353098cda967457597d","d42a4dc14ea397d1ab5b6ef44ba431f7e186c44c673baf34fbe2f0bda8b49970","eaecd544c753950d1f5d6be3df671bc47ee0cb837e0bc816e0d3dc472067a13a","906500ecf4b558ee9a271ac4e94466f79793c4cac60c0b96f21686d6ffc2c3fb","0123c2a66b2d08c868c496fce41c80bf5a757c9401d233b36048786753f70f2f","689539d22f23d35537a1d34480def89c2daa9f401d7a55c8cc36b226b55eabe0","9e0e5cedc5103a859e068873c578f091de27b49033cb7ce2b08b7c425b60c7bc","8f7e44f63df1c81224df91ae9dd234c6f769daaabc106b597f32f01f2ca84605","7db894157ed9dabb03cb2365fb7f1c3175f5c464a5f6fd3024b83b95573cd6d5","81757bca5afdb109f23b2b1ab2e08f434f626af25e986d2585973e2409a82e36","2f35432083547a52411b4b8128ab118601abc6a6e158a38894add0923255dc0e"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199173952 · entry 108e9186e8c5677a85d2…

Expected log hash

3bc66074c7b0a853326bf5ba0590a111eee6455dac5c98c791c22eeea9a48920 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":"v1791689192448","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"I finally pushed myself to move my email provider to Fastmail and I have been delighted ever since.","rating":5,"review_date":"2026-05-13","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a04d366f7d27340ec9acf50","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 (ffbc979c8901…), 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.