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.

“Das Beste vom Besten bei den kostenlosen VPNs”
Google Play · 5/5 · 2026-08-14

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 3666503969

Proof data

Record hash (SHA-256): 0190253eb1794adedba22bacd472d91d894190a2bf9e0fdc5e88880871fa0cd0
Signature (Ed25519, base64): CThz9wGruY60D6gWwV2XAGnK9blgajKC4r4gtcmD0a9+vQ2c380cmHAi55GvK3mYHbbREja79fsMuA4acYstDw==
Merkle root: 7fcf639a7573b11c0c63296f1f4cad9d82711469135561c27b140b3f8cf0f233
Merkle path: ["019c674cf4596c204b6c67c5a6d20222e019cb8ede0475084d4481f817e6c71b","d99a2d6389b5ca184b0535d88b2020f78a1dab5fed9c969eda5f0ab3840bf847","ab9814376b9fdfc1f010681ff0e46d32e881a35a2a32e3776d33033611402e29","3c7c5db4b289a22a6050fbf077153bf4b99e71d2043d978d3d049cde2d562f85","0ed829e52fa2a15949e4e4e484987f69ff1e5f55874ffeb32bcb4cfa3a8707ef","7a34ddd1e7abc374f7e2c50086c9274f078324ed3d495d80cdf4e0f1c3cc039a","3429ac4040264630610897ecc7628b682fd7ed6e51c24be37dcc1c00943347c4","495f593a2cf8a2fc85aa42a2269b76963da0d3b46a3e56d4bb3b2cb27783fe4a","a84eae91a9894c74285f1f0af421f95c32706ef7e60e8cdd1e9479f847f5da21","77c4bef189da17837d91f32ae209ee17567c52bdae0d4c412108576f3dc65307","07b09ead5e3200c1b520970718a379d46d297e4c0f0f99a01dde8b4b2e5e882d","c4613c89731736364f3f3856f24ef3babe183ce20545df5fbb70ac024301ebc7","b978843be08c52cb951ca064b6ce98b7a05b3bb460ac7b4bd5d1657a0d8a155a"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3666503969 · entry 108e9186e8c5677a89d4…
Expected log hash: 8f203023a4c26e044b3b27e73dbe1466d2f19b715af45abb5c7e82ddfacac0ea 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":"v1793701411816","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Das Beste vom Besten bei den kostenlosen VPNs","rating":5,"review_date":"2026-08-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.android","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 (7fcf639a7573…), 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.