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.

“It is superior to any email service.”
Google Play · 5/5 · 2026-03-23

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): 14b8420cac361cd1b7a42161333bac001783f85d163111d9df7f3f3ddf5ebf97
Signature (Ed25519, base64): ReB6H+CILQfmgORpwFilgJOw0ptjXSyqVGZhxI+fVZeUr98AU1BbCZr7u/G35G0u9dBsBZNlOZYtHL63yKP/BQ==
Merkle root: 825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9
Merkle path: ["14c0c836c6cbab431fbc9cb6e57a3984a7369983ac34778f5f6b6714e339e380","2ca4cfa38369f58480543a4bfd12eddd0f9bc6216dbcac4dbf75f63a6047faeb","59a638421a7f31088bb1c7b49c46a1243beddf3ac721763adfa98ac4559591d5","d0fb89541398182780d4df09e97c9536bdcfd971c2f569a576dfcf4e758dc36b","b7c0b4adc877f72b006f0e1554f177b34beb7281e8effa1fd8b329d8bc1317f9","046dee1b50eaa105074d2b9285c2f7853035cb5d7c7f9262a8500268912cf7bf","367fe7710b05bd219fb92ae2f7a8870f086ef4abcd7ce67a23c62964b3a09ec1","a4ba04b40a571b2d5f3ee7e335d935efa64456ecd0859dcacfa2e0809a96100f","3417fa32f498dc70b75ecf583ff6cc4d30082684ed145bc752c2c5bfcc185868","1910ae8476868c79e989f65f38dbc68dce63cadb169f02f488e5b2ef60ffe52c","febf287b7c32a2fae856dbf526e351f23b5b8476b4c1b3e342c1def13e494cd5","9c0c076fec2f0fa7c1094b4111d2e5cedc7ac35232c509cd9a25439361474b1c","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:proton","quote":"It is superior to any email service.","rating":5,"review_date":"2026-03-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (825dbc6ca55f…), 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.