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.

“Proton ist ein sehr zuverlässiger VPN-Dienst.”

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 2776103867

Proof data

Record hash (SHA-256)

0db9206b448445a68cd87ae072794bfb58a75b1064d83cc970294fc051c5e2bd

Signature (Ed25519, base64)

hapHjE5N5uGZO27VrbmSe3XnsaQpng1g10sqOAPj+oV1ssb5++6RBMf4I6bUXkPJVY+EZUsQytQJQ0kFDgB2AQ==

Merkle root

4dc0bd79ba3e9442f7f1feb21f347e2f6fdbc72e99098aa5164776a6202654a8

Merkle path

["0db99911df07d671acd335ec4285ec115294a12b33d6ea780305deca68431942","0da3a13a460d42eb6a68af77ac2a0a9070f88637fff53b377f8989a93707ee46","1bcaffcb0000b5510cb8c5e4038c2a7e6bc3f96f59ad8620745cc24aa8e968f1","7ad22fc5c17c035b88001757e07f15135537cf0f1f9d368cca4a62ea33f5ad80","4b52c9dc5805ca32df08c885dda78707668273de67e5f31a44ab25debf74eac5","c325c4c92c07a458395183ba790db577a775d11e4ed50ec0bfd56df6828dbe59","b20b7d9b9ef6af59492152522bc921c4b81b08600aa972a5a1d01e379ff4dc47","3e65cc4f777ed3e3194bbeb42b94477a0e2967ca1ff3dae5fac73c5cee58753c","af6056d61581c72a4d9ba6f407dc3bda2072259ee7ae67f99508e54b896875ce","004e614132cb1b7c9b619d03ff9f55e46b7cb9767c5ae1437449adf32ddcec45","ba894b4be4882cdd4ee89df93fc269c4b5650c2f893ba96b1cfb28c1d9866900","601d3d5f4fba7ccb8e25e8db9adc4fc1a6094821bec2364894f7bf4c640df5de","b64868d5884e6ca103d8fa1886b59a755a471482d82618eec868304914b8e334","72f96e42060ae616ed33b8fd6ac687c1899623eaa8a351026bf33e2e7a041d34","e60c2274998b06992577796b6abe86bec144203fe960878f7951a3ae12c9e532"]

Anchored

2026-09-10

Public log entry

search.sigstore.dev, log index 2776103867 · entry 108e9186e8c5677acd4f…

Expected log hash

2498329b7eaf275d309293dfbac35d05dfb8a55c65956add8448561c05945f28 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":"v1788848066028","kind":"published-quote","locale":"de","page":"subtheme:proton/quality/vpn-geschwindigkeit-server/de","quote":"Proton ist ein sehr zuverlässiger VPN-Dienst.","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

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 (4dc0bd79ba3e…), 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.