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.

“the recent update has now made the UI scaling really tiny”

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 3241341297

Proof data

Record hash (SHA-256)

4f746b8250971b09fa8d6493f5c7cffda0d31a70b63d11f5b69eb28daaa2a26c

Signature (Ed25519, base64)

aqSVU+meLAF3Xz5yx+tlCU2q0jFLVrBOZtPycPwtClYC4/dvNH3nU0fhWwebts9HMYzpWNBzD1OsaCaXt2R2Aw==

Merkle root

4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265

Merkle path

["4f744d64673141fddb09fdb473571fcde0593b7eb58d2800cc35fd7ded81503b","8388462e5447ed5418689c9b5b51356864d2760dd750ecab5104cdc2e77e63a8","f561413e87f21f863eb216f6c29becccd94ba85df5fc8bebeb95af534a4d53ee","68f7b9ee62697b6b7f3b9007af7dd81af2a888c8a9a2c5d1628458792bd98ec6","95eaea30009a2cdcf091568f1957596a7d17e5cf5be09eef85c059a7265f7fd3","5d000fcfd6aa9e27cd3d2f441940cb157ad2349b562ef79e054020a5475ddedb","e81fc0d27c4dca4a83e7c5c4e0426c44b120c0a6b2a4ddbfd6887c94751b5192","ae3793077eeb404ac863df183e8e95e419d6c94a2d046bc9455636c198faea5b","e1cf9cfd779959823e398b82ef12752f83101ab9eebdcea6a3451f6173e6e73a","8cb2f6c11f29539f83cd2e9eea81e8e31d29b15e0a1dff619ec27fc9236eefb1","cd3e9be594270f97347d23985c19ac899631a6773a3076c34d54ac880cc95482","1a39eb8110f60cca7b5d74c4b4e1ee494aba4bfcd1f4082136542cd2a427ac26","acc667d852c71a0e84a086ab20f7bbad3d8ae083a1e44cd20501ad641f662bdf","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…

Expected log hash

39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"en","page":"brand:fastmail","quote":"the recent update has now made the UI scaling really tiny","rating":3,"review_date":"2026-08-03","source":"Apple App Store","source_url":"https://apps.apple.com/gb/app/id931370077?see-all=reviews","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 (4900b1080bdc…), 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.