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.

“Has a nice interface.”
Google Play · 5/5 · 2026-08-12

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): c9592eb75c8543162edf3068156c8f97fb975a993376d6067a6009b625b7c09e
Signature (Ed25519, base64): Jval7K4kAqbuNzertI3oeYZzfnhyL+HQtnVKEjXd3bK199bTd2W9o5dbde39SkVJ4IZ9XIrKLJxbGAuwXXnxDQ==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["c9598faacde5388061bf213d2c9a792e22d58dd6dfe2f44bb745c03bcba003ec","4b202ac666c9fcd11ffefad6aaa89dc1eb5e1aa83aa0a6e33b23cc481438deed","68fdd1c830e4314dc1bbba7f10570834937bd7abcb768ba618975713c56eb338","1785c61a93457789089c262f2434bddea44c253b6370c051f15151da0160f3e0","01fbe90ac932d5e0f65152aac029edbdac049180e22b86480689c1d0b8bf649b","26135f4af98afb7f0745e36cc687c3b0a304dac4df547fefe515518cba9e80c0","db1cadfe1b7e655bd1e822df7905391498760af0cdf1bd2742e41bb992ba82ad","52b5a5e521b19f833ef6936898dc00f888e3839a8bb53dcd9b5dcda0bf285093","4c0e3ddc8435fd435b817a25dc7d9a0c420f16fbb80a9a18c1e1a89e16c504b4","f0401f6668c1e53131a7091e45e0838dcca72534cd5ad98e9579977ca82cd5e3","8c9100cbddd92135ea974aa1de801700e80705582bb520a7570452dddc6d977e","754ce755e6ee05c3f3abf3d61f526c095312c78b178503de17a63bff0979655f","054c6c39d1f97397366b9a1b659a373f0607ed1b3f28fe998d444aa71461fa00","fb01c9b29e184d558c43a512ba05af475ec20eceeace4dde365559da92299892","46bcfbc656e0e2a380a8a94cdc0be3d8b4c668e5f9e54a10ba396a45b371339b"]
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/delivery/en","quote":"Has a nice interface.","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.fastmail.app","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.