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.

“Funktioniert Gut”
Google Play · 5/5 · 2026-11-01

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): 05d0b8016017f1c3f691d3721cb2c7b7aa4fbc118cdbd72c4da7e965fdcf8929
Signature (Ed25519, base64): jOkv2YvuzDltgWc5q/YuCT/bG1jlmc7kx6u84Tv3+Slw0/O354MjIsPNXfNIA1eVWjN+yHiubbwbLXJE/a8vDg==
Merkle root: 7fcf639a7573b11c0c63296f1f4cad9d82711469135561c27b140b3f8cf0f233
Merkle path: ["05b8315e7298f32e834b2555c7727bca7a40d0f22dfe1a18b7fd7a75d7a4b8b0","92e32713660c2bd187a6619323181115192ccd403b0b4eb79c965dadabe70c27","02d1ee6ed3d3f85c17a42a88e93bb90dd25d67efa7d1064e55d7a659c57799f9","215075a72544c3c59fb59dde1e2e9c6921cbe1374547b999b0a61db82bb2bdfc","b8474e9b96947eb532bac6a306282e34bcf894e8dad0946730c99114c3aa056e","e5660d907ada4f406ad355abe79194f0baa0bd6770bb666eddeb0620340e0885","f81e99470d03105bdcb3073debd4eab16ad41f6435afdb7bff78fd9237177ebe","529e077baaa14fde4d198ddf1d1330dffe28157d488c4fd3e1d9fa4d6cd9a3eb","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":"Funktioniert Gut","rating":5,"review_date":"2026-11-01","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.