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 uses Sieve for its rules engine. It does things that Outlook/Exchange can’t do.”
Apple App Store · 5/5 · 2026-05-09

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): 24ad6d79c3be3d4d5db841821a10500cd901ace33afb4381f394aa89fa5043e8
Signature (Ed25519, base64): XqPdwmiHF29Mx15o2/tJCkFDfD3vfPk7UBqmEGS9TFxPqwl8+dwD9vb0uqYzzpQ6Sb6DCVt4HPyy9UEtmtNoAQ==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["24b040074465d767fce7c74e4af66917af8af4a53b87c7c1443cefe96efb43de","0c5f176b649690c378213ec6934d359c1f6b7273ab3021f6ea5f7d68ab34ef63","bef26a5cb88c1184b469207fcbb2e5393228915594c0608573ede2692b1814f7","f1d6c9770106d88c372f279243b57f6192de8ea5d25c5242df61ad5af77e4f3a","f551e96d2dc324a67a4b8b9bbf42cbf748938502a0bde5b2873b4cf259c65412","663a462e1b39d12145c9e8e4e42105a3c33b47c03d4dbdee56c3e0ae01c6925e","3fbbeca1021003c7c676e3f272713cdaf372b17f90f89e5ab06cd22c5365fb80","35231bbfebc9182be19d844f39cc1359eb89580a9508108d48966d5e6659e27d","066c7ead0e49abbbf813738e37b6c1b5d47b82f880133f84fba8ecfb53d5ce19","c5afeb6060de4affa8df9d792c506df11fcda9d91393c080321273279b26f84a","6ffeaf8c3e10ba4ee4abdb58e6ef1e3f2f184cf2b9b0fba118ce1d00454b6f4a","7fc459298391904a3838099fd1a0b7e635c26503d7f861328c446e440a4bd8b4","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/ordering/en","quote":"Fastmail uses Sieve for its rules engine. It does things that Outlook/Exchange can’t do.","rating":5,"review_date":"2026-05-09","source":"Apple App Store","source_url":"https://apps.apple.com/us/app/id931370077?see-all=reviews","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
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.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.