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.

“Proton bietet mir den Komfort eines digitalen Kalenders”
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 3666689888

Proof data

Record hash (SHA-256): 07eec78ab361b2ff52947100c330efb9ae756ca2150fb3122dcd3654a95abf7b
Signature (Ed25519, base64): XQKsI9CaaIAnES3j7RxBid7mCNcoq1llLCSzfuj1cxS944n+XDVOdU3YecAJL7qSDF9SuSUIE2dPuLNZGLlbBA==
Merkle root: 2398b9ffe5a3df5012483239ae50d07265a8714a6b9a03ccf48b3559c47e03cc
Merkle path: ["07efdbff08322603c4dcd84fe8ae2d341a699d9242bd53060f72c5a25ce0c527","3e9d528962b01b9df82ffe463c612a984b59f43616299680c8a9fb0e557ab95f","f8ddff642c93aa5a3c7bb090405d8db78a29134dee586a98335cbcf3b73732d3","940f78f69e8b1049394b509f60f4b5ff01ad545976f8a8a2ad9dba9eec556fda","37ae03792c870cac0d22091ec9b838527d903cd87895d8382e850a0f33a8486d","a2ab55fad9af9afecff3f49baa393b838d7811bb51b0e4d3fde4c149cf0f110e","6cbb5ae417e092b1af1c37ce7eb6db023c40e438e3ffa775a65f8ddf09e982d9","e381824ed4d285ac2c5993b0fe55a1b678701fd7a6b65431b8998d6ddadec684","064954759a2c2e476e27742f2f9f6955cdc1671f1340db2b02c04684b09c0837","6776a8a030abb1520d2064f18194a96132775c499f48072ec04cebf82ecdf3d4","a505e83ead23bb585f8c086da9b8f713935fae2b0f0246680b2710029f91a4df","3c9498483c19a648725a0d444d70aacd539e3c6670689e94505e87b6aa5f9803","69e20c73bdb345f66641353c13ba7e73f98bd05396ec371f55992c40dd6b22bd"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666689888 · entry 108e9186e8c5677add57…
Expected log hash: 081173480bb584ab401065f32774d38ee3dfdcda0f372573695ae49a257a2dc0 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":"v1793701859167","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Proton bietet mir den Komfort eines digitalen Kalenders","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 (2398b9ffe5a3…), 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.