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.

“this is always the best VPN”
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): 0a4cf2586281b1ebf5344dcbe6894b9c6bc2801aaf0b3931c1645cf6215d86b2
Signature (Ed25519, base64): J7KnHVYfNU+24a0zqJzHXe/VVSw+pfm351NVjX6wWvocUOg0nj06Kbhns5c9eFmQGNH/rKjr0SQ/lolRfzT1DA==
Merkle root: 7fcf639a7573b11c0c63296f1f4cad9d82711469135561c27b140b3f8cf0f233
Merkle path: ["0a4c4b6296fc7e07aa6236cd01d12b922e2e0022a5dfe5c500891316b8a9f392","347d3fb7dae02e9c0081ceb1f15659d573f5d6a35f329956a478ab5a3481d858","41f05c95f39cf6fd587cd9ea108b9ea2699981491b4132176e1770452412c9f8","b06a4227d8b3f9465d12786866aa66c35a1bc8b4e20062e6244e378bdb1db08a","858c003957c9d244586556fa322b980ea02ed508a289786f653b27801e878dba","21716cddd6b9fb5e8bd28fbe0b2fec25fc4f11cc2d3fb28e26e39e48d3fb29af","8a13799464ac34c65872b1abc7ad89d4af571eaf7e88b263742802260158509c","0edbb224a85f3a3c1c20c7a2c6234752c97bac8a1fbe9694288e3797033e53a8","6c96cdd0bb565dae2efabd0c8473da660ee84018253c817c918760207ea5d9e1","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":"en","page":"brand:proton","quote":"this is always the best VPN","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.