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 is a master class in interface design, and makes Gmail look like a trash heap and HEY look like a toy.”

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 3240422411

Proof data

Record hash (SHA-256)

38abb555365565a196fcada020a920fba08560d62dd1833b5683a1f7b180b181

Signature (Ed25519, base64)

ReL7DtxbZwFD9XRhvETfTPoSVsngMYMy1KLlo1fQkn8KJdjsNNJaJny0VaK2nZTUwtXA3rTMW3M9fsulkhr6Ag==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["38a415d561d0ee36e7b6b2965e881290636196a7b4693b3109e4eefb4dd2a0a7","75025705aa2891edb3cf18f0f0fb608aea5f3b9ec23a2a76d13c2f434591c21b","192ccb6e77b1f6e61e51da811c220e00d4ad73e498540e3c6a43181f322d2270","91f58cb77db2ef94082e4d55418eb200b4775b9a83a329acfc040e03b2433fd1","035cb633365c7ca68d7607080b7c1f149a92f4224a4f4ababbb58acc24885ef2","87382bd0f3aa336c609ace287f316f020026bccebf528779ed1de1fd75a058e7","367e7f15cdc18e37a45154d792f5bf1e98825a4767fc92dd88a1b3dc89a23b3a","5f1a09581365811dadafdd50b4c1f71e511554973e773d8b38f5b2d1f612e3be","a70fda4f6789e637af737e144e375d8ac6d1adc3c848b1f33b8a6290df8e12ee","511313c4bcb370622a3c70c8399e6d7bdbf0e0e94e90f87b4319398f8deac130","a1e59f881d6bfb0bb60e505cb797755e7e38f570bedf7bfe58f6c8bf00ebf5b3","0526b5b7adf235fca820e27d7e9bb58328407474fe694c840500fecede0e4f46","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"Fastmail is a master class in interface design, and makes Gmail look like a trash heap and HEY look like a toy.","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 (825dbc6ca55f…), 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.