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.

“Die bisher mögliche Webp-Dateierweiterungskonvertierung funktioniert plötzlich nicht mehr”
Google Play · 2/5 · 2025-12-17

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 2789279696

Proof data

Record hash (SHA-256): 0b94a69f31679548de2bcbf4089e6fb557601d6ef8f927749d5abef03f256f00
Signature (Ed25519, base64): MSvLuM3JtJmwRRFpu/n3r2joggZj6cPC33kA/hlNb4KqPvhsHD6mzi52lUsJVKrYDawUrWurRIPDpnIvvkUdAA==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["0b951990200c851a16c645d579a2258a3c0b2e2d4f87fe12a533d8fd3ee08bdc","cad26f4d3ae9c8a26732fec534b99466d52c50c6213ff2c2ccce0773b90706d5","f64e1a93cbfccef510a2edd3720fcf1fd228ef4d48ba1756bd20318c384586a9","de432324a4deb9fe34817a934d2888e352a7161d93875de0cd0c02231939b8b9","602b664cefbec445ca4643466cec4319dc5459d998b8be19b6d0e6cef1600d4d","d2748a2a56f5fe502343deed3b28597c042af1b5b7a037b0fc800d2f7b4f6bf4","0c65dfb2fe48bffb40f4178e917bc95608e6e03df156449ccfaae586a2bd50dc","d197edafcb01d85c58ad9517396d0b6a564c16b94942ab4f7d2c1e7e7ea9a1b2","e9869695599de07dc9eb7f9889abb19b6fc44a8486f32f81a4f3a377c2c79216","929021c2cceb1bc18530741bdc9b0bc7642b8907f17a6184502e6a515819f766","c88b3d8b7a19b4ad39809cf40205783f933d9a74fff3512cfce9fe04f3d1b7d2","6c14202f6f4d89338c781140a2504c6d469b19d300474270ba84f87831aa8464","5b47260d99d2c4ad6e0d963995c990c8506dbf10eb0b146a116c3fc6ba348071","a9559f2ca8536f2c18bf059f3f0099d62235a93ac35dc17b09967d392b72be7f","01242865574478f13dcf9d888236d7a907264abdb87f360db7db06de0945075a"]
Anchored: 2026-09-11
Public log entry: search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…
Expected log hash: 05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"de","page":"product:smallpdf/convert-pdf/de","quote":"Die bisher mögliche Webp-Dateierweiterungskonvertierung funktioniert plötzlich nicht mehr","rating":2,"review_date":"2025-12-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (97eb1062a862…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.