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.

“plus Sicherheit und Privatsphäre”
Google Play · 5/5 · 2026-08-11

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 3668758047

Proof data

Record hash (SHA-256): 0a4c4b0e9c381f11a9b9ce89a6e328757aaaf413e93f5ee6f8e5009746da1033
Signature (Ed25519, base64): T4cBCwLhZfNzMY2q0ZByPwVAoyu0BlxchAFPvpGn+5dIhJG7N41QH4BGTEZ3Hucg9W92eZHNKm4Jte1TqcHPCQ==
Merkle root: 91ac4838fb4692cf2c714cf22417014bde85e9d7b2ac488478d7f5ddac3886a3
Merkle path: ["0a442702f840fd879829baf88563cc90be3f698571b0a9ae9efd700ff3ca233e","d3d8ceb4887ad467fe4d093456e191241b90e90dc22f130bb89ae692962f3cdd","ea43dcc2b24aea4955e14e5d84caf02017fede84b51a89f34015f19db433e15d","687abb6758293c81d1a5c6c10d240e6de9840c50356356d93f1a881df6401fe7","e819d93fb173722315eeb389cd7b99ea6f72e1c6b6dc9e03f0b827a9dae9d835","01716db79b9d27a1231c981728cdd501d298948a4c52bc253d9db9cc1973ca5b","1aac285dac6696d8cf63c0b10cb552657ee4c3a9a76c31955c5ef9c1c76abd4d","2d59bdace18e1f05eeafa76110b2960c1b430b8743a10b9415d6f9ed31597a5d","f5d36b0630dd2c730a61d83c989708ef359b90707939c6c875fab4f7a1f35c7a","5cdf0aa8e9b506bf83b8f83348f8021aacb660ce17f54bb5687d994ab4aa24bf","1651d8e3c486d3c452bdd71e953107d9b464d56bf3b709848f8dc1d78473aaed","d8b72c6653070b1f720e67e6522640ee452ce3cd37e767054e3f4480f6132364","c3025b7778a1a77d581203e23f18baf3b8e43309007afd7c7abd033cbca39cbf"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3668758047 · entry 108e9186e8c5677ad50f…
Expected log hash: 69940c768d826da6bb4ba0910028f48fdd278e42d608b1f11b1cf4d36c54ba55 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":"v1793706887256","kind":"published-quote","locale":"de","page":"brand:proton","quote":"plus Sicherheit und Privatsphäre","rating":5,"review_date":"2026-08-11","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=me.proton.android.calendar","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (91ac4838fb46…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.