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 gerade gekauft und sie hat mich 510 gekostet.”

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)

0bea41c69feacba818e5f16c75b8042d7b7792db6ba8b696ec807ee963e89426

Signature (Ed25519, base64)

UW7RMyx+/fvXqhJnAUz7Gx4lCipmif2eOBN8MlMA/Kko6Jm7bt1hdGCaO+hFK9hFIXAsMndJk6d9IPCAs3/0Cw==

Merkle root

e42defaa0a17e226699ea4a82dc9c6dd27c28085170ffe1d62d8c6a4c9215db9

Merkle path

["0be13cd42abae113a84379e74f994c13a63910256c02b11079bef8dae36e676b","e4b5e6412cff4e6da09ed4af29f6af6f9d13c5c0b9280e400905735eb7203dfb","8128ea2fad2643852f3e48a1cf5eb7c5f5e0b4c834bc4d74630962dcf0250429","e68848ecf6c7b23a2345901f5096ced14b7852315bd3b7fdcd98e44b7db039b1","f6e21171a96704512e9dacc8c55dbb8f2f886d9821d196947b9df0f3682a905e","5240650bb69845015614d8a7ad8910e38cad457ffbd1ef6a4f43d0eceb03f9fb","303c9420b828378d6990e3ee91cdb5b5ceb2d2917058d588c04d40ffa817a15f","90bb2705ad2d43f81df39d7af0043df8f9cd70f1e9b82f707f8695047197a28b","7486a078b8157aff551edd7d275674060091df0cfa7b7cb3349dbc75d165647c","8478dc263757b1748d5eb57177ad8be3a4710572148da246adc6d3ea6c28b848","261e71352027ca864df620d9e191c3c277f567830b0fd5db35ec1212846651d9","26322ecba042f86a8a3948f32fb985f61482003505576f985a5eec2ec4c81858","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":"theme:smallpdf/price/de","quote":"Ich habe diese App gerade gekauft und sie hat mich 510 gekostet.","rating":1,"review_date":"2026-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.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.