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.

“Ohne Vorwarnung wurde mein Limit auf 500 MB reduziert.”

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 2680529400

Proof data

Record hash (SHA-256)

0c43596a22f33c8311f293bffe167138096cc28228923005353c3cd1cf59f9dc

Signature (Ed25519, base64)

cJ+zeAREC0ZR4ooh6kfY2G7H65uKcPxPwZEBHs1y8voFITDU07Yi3mO2NCS3eS3Deb/mvVuFRRhcdu3U3l9HAA==

Merkle root

0330ee7ba8e00d15f6426658b22fc27ca31e59d35f748e4fce3d7515247465a9

Merkle path

["0c4491a8d07674f43b77cd4d01a437d8fbf538c80cccc78cde78a40ff847ebbb","7f150fe5fd746d6abb28001d89c8739343d5b34654251cb09e230cf8b411d947","003dfbc7f421d2420a2f585b03e560da46794ba1af592ff50034963304028168","614e98fa45a0ec479f82d745c002384a9671e1944faa9b227b8d3cf8fc875c6b","ecc864f8fb8642251a6e28d0b53cb381ac22938b9c9f76478a7d6077bf9afb7e","cef109f6c0968a0776c6e9883277af7fd26397162705ce1e08e4e22c178fe870","c9eb0757e2dd0b4dd13939172d8339dd7c6c3c4acef699fe89b45cae25bbb79d","2a08f6f84a5b5a7cea65a87ecb450520d84f7551c89ac86057d7f32d6d44060e","8060a0a35702de2e5e1e95e9e9dc97bd05f5ac7e9dbf9fccbd780ff91cd9faa2","05679bc66ea31f80ca9b6ed10f20a2ea6a310665cdcd32e6521ab7e78370b537","256b94c5612246e6eb30822b283bc7be68342a117a47d3e8580d808cf41c01c2","6cd33a246b09c3a683aff5ce977e0f0a484d42a8ddad2b2a0aa309ecbb9d62d5","d2273f3e7fcc58954042e67e1b5e452db8462b769fd73af7f44aaf6e9dfd66bc","ed4e39ebbb5872b55140ed929350a396fe817203642e6e65038bc747a571190c","e840d0519b86830bf6feb5135bd7342a46b8fe53cc7a93dcade23c2aa6372980"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2680529400 · entry 108e9186e8c5677a5261…

Expected log hash

1808beecdc671d46626ee766a7fa4743ba6aa74779b9fdbb552c4293852a77bf 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":"v1788296426818","kind":"published-quote","locale":"de","page":"theme:proton/billing/de","quote":"Ohne Vorwarnung wurde mein Limit auf 500 MB reduziert.","rating":2,"review_date":"2026-08-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.protonmail.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 (0330ee7ba8e0…), 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.