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.

“Ich habe VPN Plus abonniert, aber das Abo nicht erhalten.”

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 2682369737

Proof data

Record hash (SHA-256)

12a90abe43ced6a75211d0d0c1ff4458ddfbac1904c01c386c5290b6d9b9b639

Signature (Ed25519, base64)

A9jJERa5OCOBqZ4UtRVZ65soJSbmi7QrkxBldJNVLk2g/NPz86VY9gIuwOl/SlAEg6XPw3L4W7cStU+doAYoCQ==

Merkle root

596f968cccc56e8e000b63b9dd30489d92d97de49657c3c152b38018ff4fca5c

Merkle path

["12acd29f652e1b3bba5cdfadf4df8b77effe41b5c932625741245919a48be810","2bfcaab9e38e246a0f6b62afd8a0d6f6d113a3164895c37fbccac28c8a742a56","6ca3fe27e54bb726415b009eef5801af8e70ad9c24028d23833f4a681ed23d07","859895698bdae41da7fe0e6065f27c6e82d99957ef53c0574a07534e5b3c2285","8722c9d45260a6feafda8da43ee9d2ef18d3afb1319ffbfa7ec3e4922f545b82","45520f10d3516eb83af719926361a03f5d5befd31af3bee2b0ba326e423c2ade","499e54b0abca0d404f8c9e74644a8c810374a93abfd624b6dbeedc7b874bb7d6","efee38544cdafa92e7239dfe4a57cbe5a81eb35b80bc1f324a1845aacd29515a","1c75be4e017acd532f5aee078e5bf43d265ed6c82726e76d581878859e55c482","d04ce4f4ba94eaa7872c65a2896f34043801a016c321e178633901836b1c030b","46a76d1d889cea34855bb6190d99874f090f4359fdd983df40090e76b7fd50e7","a2e63b38a500e0e747fa2ee593ce640601b396a882812dccd45f6e723859d791","8e868d52b37c0ca851c758cff6792552e789a45811741cd2ab35462dd346c599","f34a99bc2eb0f4358a151b675878bdf5ad21628e2f02e9070ad22d026160a11f","1def65a8c7022796c92bf89e3ba0ded5702ff898262447be3bcca696fe961465"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2682369737 · entry 108e9186e8c5677a1ae2…

Expected log hash

21add9acab3ef5374d6a20f71e18493c941f530ac81d350c83b699eab93536cd 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":"v1788315101182","kind":"published-quote","locale":"de","page":"subtheme:proton/ordering/gratis-plan-upgrades/de","quote":"Ich habe VPN Plus abonniert, aber das Abo nicht erhalten.","rating":1,"review_date":"2026-07-29","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 (596f968cccc5…), 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.