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.

“Warum lässt sich dieses VPN jetzt nicht öffnen?”

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 2680856520

Proof data

Record hash (SHA-256)

1781ce889a4f8dfa90d172d2eeca4736b9fe12ac6900b914a734a26580509781

Signature (Ed25519, base64)

uaHmuQLQt0MIFzthMuav+RAGbxQ3zlLoyQnVdeDe+tevSqZpCziMo9vpj70O9RJCWQ2Lo80blVpA81rkTKL/CA==

Merkle root

e42defaa0a17e226699ea4a82dc9c6dd27c28085170ffe1d62d8c6a4c9215db9

Merkle path

["1782f0054f34ee7edb59ada74c794f1c30709da480822eacbad5c17caa71af94","d92864eebfb505b428039b41239b4c4164672c768202a74a52e478eeb2d77625","e11690d9a64b9316f34a0f50d56a051976ddadf0039a7de90db0c8047443a2bc","d553750209c81f3d10dd1a07ae9ebea001d251dd48104d98c95eade7092c7aee","e0fd59f11cf287f80acdf678bb1f000bdc695eed361adf0d9cd1f64b04cc5bd6","a92315865ba49071767b257ee31f9afb65976322b270f7b58d0f8a68a9e6e1f2","40a6726af0e549d359651d90558ee67b61cd82926e0598c036ff0dcd905e6861","abbc5e77e817ea97a58cadcd07f6aae09f331bc43da81842a0bdc5b624bb35af","414e8a083ef2277992a542e8709093c506435080ef228e9d44b648b35c9ea117","68066f33bbe2763b98ffb0d8c066561b40d0537e31a7903d8b43f2db59da8c34","e8bd0da09216d62c1a3e885e7ea71d7764454d65240ae70c50c6dbff49b05d6d","264c6a01e9b304e4f581c4bddbe0a41be707f411038647fc59c30dd7bbd1d93c","a723e3192c73ed0856ed765177b67dd95561b4a0d6d1c0b16f64f339be4f05a1","f9b10a6aa616ed717dd3cacc1714fe509709e95281fdde9fabb8c6943e906d5b","270a8fe791f18cfa20f43263c29329704ffea666703469cea18570c7ca1219e3"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2680856520 · entry 108e9186e8c5677adb25…

Expected log hash

356153ffa6072187539ea75dc6dfb23d03b74238aa8aa70cd6aa9a6a99e983d4 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":"v1788298923475","kind":"published-quote","locale":"de","page":"brand:proton","quote":"Warum lässt sich dieses VPN jetzt nicht öffnen?","rating":5,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonvpn.android","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (e42defaa0a17…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.