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 ability to send encrypted emails to non-Tuta users is also great.”

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 3668845412

Proof data

Record hash (SHA-256)

211a32ab9e09c1673fd14d14e02539a9130ee0f551c36ca7591456414bf0d04c

Signature (Ed25519, base64)

ZrioQZTwG5zcQir1uu1PHdcOkTgfyVUaZ8PlX0H+LdPGGRyfXgpErfgaOQqGRjznTo7Xk+3xI7ViKFY3zMAnCA==

Merkle root

7019aaa5828f6d5097886420e36d6e6ded993bbd5a23bd9e2c5cfaa460d7110c

Merkle path

["21242cd85b64b4844f8e49d4a6d5ca9b7ddbf5ae0adfe5f9cfd1bd1988f81a7b","8abb6fdfc21880ce7430a1251618c63115e115856b8abb0c52980ae632a38247","9bb085f1b10ad1f4a210263114171b98bfa6d475cab270da9441067e5bedc321","a5880fbef9f2d6f1df61da57fe4e7c69f10412dfb5d1ffe4db54508c048d5b0b","33e112fe8545283e7ee96fb65a97e5198e81934b67a839d325c4ea0b4bfe81f9","586d9a5572285e40848011bfbb11a16d240fabfccb99535dd05940e38a263469","f2bee0e20a8700a691e6da6937f8d4ffbf72b5cb182961b22b8069f24fbf94e8","eb177386056ac1cf2160c7427da317bce3621a4b08c1f8c14db97779534ff0a1","d0275602a967928b606d89cdddfb82d257da9f42f81d86eb2d18490556bcd007","a120cae915d5d33790812e08a3190e0cf625e4575987bf96445665d721bf4346","851fa3adf59fcb94defbd04f85fe33bbbc575b2f123c83a8c1b15423bf3c6c45","70afc385443fbd90d5057df8dcfdd810a18b6e5abb553d2b96a045cffc7ed8ec","3eab3f38cdf1b48533da9c351ed9f742051b60c6252331b34c1bc9a3d2442b17"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3668845412 · entry 108e9186e8c5677af265…

Expected log hash

9f4762e1bb287ce51f4f6f20cca12e845b979e3d26d611c4c9b3dd71b059c0c6 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":"v1793707083193","kind":"published-quote","locale":"en","page":"brand:tuta","quote":"The ability to send encrypted emails to non-Tuta users is also great.","rating":5,"review_date":"2026-08-18","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.tutao.calendar","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 (7019aaa5828f…), 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.