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.

“Warum lässt sich dieses VPN jetzt nicht öffnen?”

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 2612584084

Proof data

Record hash (SHA-256)

10b806217c0251ca2c35bb2a2bf7dde9137ab5c1d997ef7ebcd69126303f8be8

Signature (Ed25519, base64)

UYmezggP7KwBtrz9NgtHEy0ZVwuBjw8lWBaK90q7MYEXT12qimdJNW5AL4NpHuCGnkHyfHWo7HQmgit2V46MCQ==

Merkle root

11760913b24394c3efea903b5693403de67f30c73517589265e62147ce6d7db9

Merkle path

["10b117dc6628fe6dc60b7a4dc3f6566a9911837ccf056c3bc3db5f86488b0fe7","0ebe33c77f14094294a383bc6ca02107e2ad0e12497eae8ba952faaa683e242c","4ddab3be2022010e8c5328bcc437acfa25a4b2ce8b28cd0cc44863701fcafd05","ec03fc4f5130faa6c15c1623de429b618a87841dbe70c86e111c4e96ad4ac7f4","a8d85c522e2e82a413ccd3a03e88b4a04923e99e8510b1fabf7cd91c1754f587","b6ecb993ecdc5cf585aa074078b7284a44851afa521284e8e92f948c4a44285b","434855e574d3a19d7604d49e541a8182ffb05c63b5780b2b54f7caed0ec7bb9a","451678cb5779d202a8f05ad24b55c5e64bd7a4aec98e610d6e6e42d40ed5e31c","1bae7252ef283b103b8d5622b99bf3507fb02726d3ae6b3f6404a7e6dfcb21df","f09bc3c3ad670fc91c35d1c72ec29511b7ae94a366743d99b706a9d9816d9eea","bd07487b691762e95594ec81baf11cee57d318acb845571e5b299701c18b29d1","4e02c6a47369138d0eacb837d8bed87707d8edf6573bf9a07b0288ec7a1a3832","bd8f0b0faf9d3ad7c16d60f7a01c003de274172458ab1f670d78e9cc1dffd585","4d94d9a9168f14be08d81b3238e6d7999acaf99b1233bada5f6c2802401f1b45","8cba8822ab29049afd67fa646ac9379523fc6be8932688ce4f3067f563511db4"]

Anchored

2026-08-27

Public log entry

search.sigstore.dev, log index 2612584084 · entry 108e9186e8c5677ac6bf…

Expected log hash

0a57a1a3ef828bcabfde2971260e46ab649b0f8c2c96e231d49bb83e51a8ab3d 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":"v1787801559681","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Warum lässt sich dieses VPN jetzt nicht öffnen?","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.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 (11760913b243…), 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.