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.

“I tried to send a email to proton support and I got invalid recipient!”

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 2582604655

Proof data

Record hash (SHA-256)

0f18b6c79d99f1f1ab10b8cdaaa15057842f6d265b005d995982d6a1f505c5a0

Signature (Ed25519, base64)

SAHZPn3xqnjeE+WLNms8vgmz6xIdCpvOnSWqCj4y1rsXwvWraQmN3g8/4WJHwuyj4eaii2ZL+wCx5rycMtMLBA==

Merkle root

ce02f748e6331cd02eca8f57641bb910cfa3ac6a0583f19c214186c96cd0e8be

Merkle path

["0f1f4e897d346abc0867e339e3af5fbf96e2f794e340ca6cdef9ba1c9d0cf936","dcde531507d43133ff281e5a1676a788737fefb6702f735bad8c47e105d93211","0522893a0511f39d74f20c8b3b350917741adb3648b88c6e29ce445628c5b0a5","ba8f3e81101c731e10e385da07eab72214428dd758323c4e8c9cf9ed83b9cde8","4a980ef71909d41889960fa6bfe3c4933409c41ef8b21ceb6799dad8d3ebf292","a05d4408074d5820698940f29f4c876e7b3bbbbdad580ee24f1f53f600ad8552","9aa82ecce2d42ba66b3543804de48a8b3fce47e7da4b08463978589592059bb1","63569d186219a517a374ad11208982d3ef944e23193212b46fa96871ffde517c","90520f164f894a063211aac060e77b26f0e693ea3528cfd3d156aefd2ae96e4c","fa35624da18dd59298b05fad3f6595fdf79f396aca342ad574ecc34be9cb33b2","da644d555e538c7c981ba2b58b54008d76800b41edb7fde9e57f8a4eddc673bb","b32c84383744c57b015abb43fa1400023699589bbec65b98d5d9a1020542c84c","2ca5fec314a169184d28bce72e10be4d0dc96e78ea6b0fcf500eb6558685fbf8","1bc99d2925512f6c847da60b09ad8a40a192f29b50aac2ed7ad1b460e9e23fc9","8475fb82080060bd6fa491c94e8e1c5001264fbf6fc66e6998631ee565101bbb"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582604655 · entry 108e9186e8c5677ad979…

Expected log hash

3437b01b95be42f034b7198b6d5e9c0aa9b5bd388493d56323aa647d6d8ff38c 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":"v1787626024249","kind":"published-quote","locale":"en","page":"theme:proton/communication/en","quote":"I tried to send a email to proton support and I got invalid recipient!","rating":1,"review_date":"2026-07-27","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a6771cba00b98fe70dbd64c","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 (ce02f748e633…), 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.