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“Fastmail has been around since 1999, so I totally expected kind of an outdated experience.”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 3162767972

Proof data

Record hash (SHA-256)

52a76e25cd56822bec4d86340212beb7bbe907ad3a00fe0c05fbe43889447920

Signature (Ed25519, base64)

NUfehmSnNGd7w++5qeW9JtjHhEndDRChkAq3aDWAH1yMGA3x4ufsrP2HKOWUlZbwtcTX1ekWT6rSu3XzEgGvDw==

Merkle root

ea9653d48be6468e8b38c47d968f49528ccd17e229f6df41b5fdcfc232720ce1

Merkle path

["529e97776dc4089e9cd28857f5febde7d2d19ec33a0a18f099442d88cbf40f33","a9dc72abd0c46ff811e350714c66b0631f541fd37c62f27f9855592e7ddef36a","d809e05223345685f6124b2eaa0b79dbd7817bdd14ffb765d105c9563e556690","d685aa0ce7bb7aa0fb5285be6bb248ab4774142bf705b116cf8db42d3223bca4","ac37ce614e8d917fcfe924f6c32b14f2a03fcfdd4f423f7fd1fd49d29fc06810","0b430c4c1e63c3de93b4821db00d3d55a6a4c95ae8b94de1280efa2dae747400","6d87cb22e11d069a6812f1a55ac5dd53dd0ffb539489ea079317c0c0d737949f","4a811f9ce4d29cdcb7abc42b65d1dc604407a21c1dd0aa0935871ac2523c9908","37b8b4fdedb9a989c374e0268eb35180a427e5cb455cd23626634c30d6a56515","235ca97724c8a79a5d8652331d1959bf76a01e96389c92ff383ba971c9c8ee9f","2fbd76dc63aa2d3fab59b0799540598864c2fa1653a651616d60fefb8ad60775","e239ea9476d670817ebdd91ba0132a03db9eb6b27caad07307f06d5944ba7eb5","4c276f582ce22de67665688bc9cd00863f14a3f737e6aa475bd1ea4a72abba1a","ce40f5d4a6c2a1f06b7e5ce375094f8c75556b02f37cd3d94ca98fa0a38a1e5e","142248530d485121153c09b780e08c6af592fdb4c333042d3cdd9e4160c6db55"]

Anchored

2026-10-09

Public log entry

search.sigstore.dev, log index 3162767972 · entry 108e9186e8c5677a40b3…

Expected log hash

ea8f60b663262eef5ec0ce5a9fbc0ace913092ea47c37bdc70ac392578ea0c35 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":"v1791541525227","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 (ea9653d48be6…), 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.