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.

“Gute Anwendung”
Google Play · 5/5 · 2026-08-13

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 3199819547

Proof data

Record hash (SHA-256): 069db1b9a20b89638c5c85589a81b12e3d6f07f4afde5706ddef58cc290df173
Signature (Ed25519, base64): 0iGBVADjtOVHALNMUEKuejE4T9ahL+7ZEzKHfM89rm7cxm1QEOnXofMyhSnbZRGEcNtb6XafknF2M155/0lvDA==
Merkle root: 00eb1252356f6576712ea4fb614a5236163b3b1821e2db4cf332fa9ac5a6c4e3
Merkle path: ["06a1329d278984a9d45fa1bcc38d27dc5d01e0ba8eab8d5bcd193a7d2c87bc74","82223bca6c2c0aa2db5030ca9630a2d82f4e61ebdb9e3901ceadc3222bd6a383","91bbc4035d100d40950863c5e686f4998f7533ba9a5036740d28e62b0cc94c43","53296847b686da59f85393862dcab7690b35a98b65a94f32c14c898768a94bd8","d02277ad011626943663028a42cf571dadd4195e720cec1e4c625448761750eb","f9daad8b960ddc9a148dfe6ef9f5bba756223b88b2ab3dff00fa4bc0ca9e66f1","b4be87784d4ef53e0d45a4ecc7ace0d47dfa15e8698cadb7f78c2dcdde7ba8d7","a8929c1211c3e0f552680c556910e0fbb9017f244d310aa7773f05ada2ab41d3","883229c4fc29d01c4e3804c4e1501c95698c442bd8ebc8eb9dda1324b4658acc","b6219d3828cd9933f83a5a3a7a0bd3a0f2d530391fcc4e5e83a8aa8488094ef7","2b6d6fdce647617c741a046eafac4e99644c3a5be1c9ebe28559598567bfcd96","59df66a914108a429ada69f9b0ec5c7aa11a7c4be311cf526539d0c5d6277105","a7b86baeeff583be985d9b11344856a35a889289dc600aefc4e2b1a3564fefe9","5dec716281725808bed0364df1f1b242a9cce0f53a1e675331a87d799bcee6c1"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199819547 · entry 108e9186e8c5677a0b40…
Expected log hash: 54bf23963e2d2d167d69cc8eefdd91558bbc8835be34c5469b6e0b1af30e4d15 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":"v1791691808362","kind":"published-quote","locale":"de","page":"product:proton/proton-vpn/de","quote":"Gute Anwendung","rating":5,"review_date":"2026-08-13","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 (00eb1252356f…), 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.