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.

“Stay in control!”

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 2680529400

Proof data

Record hash (SHA-256)

12b57e653b79f0a3e6e9147024b7cca3e93291b4a25b1ebf51fde2176c13f8da

Signature (Ed25519, base64)

FyAFCArRQ5brsy5rmzECOYG0E/HlqsTooEDABWukOMUAGjhPHB0EKr/T2oQPfz5xWrbxP30MirEMd9/KXLqCCg==

Merkle root

0330ee7ba8e00d15f6426658b22fc27ca31e59d35f748e4fce3d7515247465a9

Merkle path

["12b37543647c0ddc5174229598f91a3db74f9b7356f93779a445dab4a1fd1b04","40bfd1ff7354626b2a31d597026ed9d4d0526c2554489d40d32d9fd2cfb28542","120d0e7e286747e2edd4bebf6d4a1245d503db7867daa26f5a12b422eef0b404","94303806f79b82b3aca264c796eaaaec455df7786debb241ef225bb52f924e65","1855b28d284a0bd65bfde72941f0bb03da0461fe7001701200a3954a4ae958be","49ab71a1ea1d34fa2b37cda8977ef0a3459814b99937d7175bdf7718ef030a81","bf280b2b54b909f86429dd1cb33276c12a2ea7e5236591420eb1fcb244bf9353","e254988cb63b2344c695d18df743a7f6826c04586aad32790ccfec71cb2a3ab5","f4344026df889c2dae543a3489c4a385a65a2a59f509e870e693d24ef7124ad1","fc0a051e1d7c3922abcf3dfbe6f5e8de7c7352ae3fc124ae49ba3a04412191bd","256b94c5612246e6eb30822b283bc7be68342a117a47d3e8580d808cf41c01c2","6cd33a246b09c3a683aff5ce977e0f0a484d42a8ddad2b2a0aa309ecbb9d62d5","d2273f3e7fcc58954042e67e1b5e452db8462b769fd73af7f44aaf6e9dfd66bc","ed4e39ebbb5872b55140ed929350a396fe817203642e6e65038bc747a571190c","e840d0519b86830bf6feb5135bd7342a46b8fe53cc7a93dcade23c2aa6372980"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2680529400 · entry 108e9186e8c5677a5261…

Expected log hash

1808beecdc671d46626ee766a7fa4743ba6aa74779b9fdbb552c4293852a77bf 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":"v1788296426818","kind":"published-quote","locale":"en","page":"product:proton/proton-mail/en","quote":"Stay in control!","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.android","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 (0330ee7ba8e0…), 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.