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.

“Ich habe diese App installiert und sogar dafür bezahlt.”

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 2543025731

Proof data

Record hash (SHA-256)

167edcf06a0bf8cfcef639fd422c82dd3c4acc99baa4c83af016938046feec6d

Signature (Ed25519, base64)

8Kl2a0u+b6lKZ9pnJ2EDtyWZgxceGWxQWBffxy7KbnDHkRF2z7k5qyXNdoDpc5IWfP+OU9KZrT8koxMTrOEnAA==

Merkle root

172a3e0b3c9f8b02f52318e01ba6beb899404e00e91c15eebc4dea38467e1404

Merkle path

["16803e26cb9ae69916c3786c1cc7b6a6a9a4c1da061434e230240baf0f86b009","9740113521fc26e4f0a98f6c62bbf66bb6ae4dad124c29c86e51ed26e5e887a8","74ddb3b823aa315d8d0b9a976cd6e1db68099ea5699f5e759302b1c8dcd0ef54","6b1df0780c34b466181e7d36860d87b61f92502ece27ebfcef3995d627622ead","c58c3719ef9a286616d383518a92bd3c9c338feec72181473beb5efaa25f29d4","535a07581ab612d4130b2f38984b064de2ea9198722cc24300b0b5ab17b209cd","ebcfd33cce2b0ef912e8434f5e3e17ef26a592f62eabfc66d3ca2a6cace71fc6","67f3b2f7bf472b0e59dcd12026c4a68bae54260f0939eb8f37b4c6dfc9e3a2a3","89a9d5ebd133c58fc7babc3b5f4c6ffc05ed8db273c156b93bfde9c9cf76f2d6","d494e889799d389af0bd66fabe5be27d9c813f36d16caf5b6471fcf199a71ff6","b9f941e6f506f26041e061465870845d16c7c20ff6defa76d5eb1ce53facfec2","589c22da96e3ff60efb0f79f96ffe7af6214e9470898a7edd786e91a2a5cbbad","6582b4bd72409a5334905e80c9e3aeb7c43a20c5eb4c139595bd990bb777102a","b2e250a62b44b0b9c303f91afd3aac8852fa6af504d7d68ed736141a3dd71161","7731d0ded4f51d151ea3e84474d1e27a6279e8756420c93cf5fec0abf7f11add"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543025731 · entry 108e9186e8c5677a8971…

Expected log hash

19ecbe4a66d8adbd7c6057dbf6ed9be73485c248dba1e0c595279a908b3e8bea 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":"v1787283443958","kind":"published-quote","locale":"de","page":"subtheme:proton/ordering/einrichtung-konfiguration/de","quote":"Ich habe diese App installiert und sogar dafür bezahlt.","rating":1,"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 (172a3e0b3c9f…), 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.