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.

“Großartig für schnelle Bearbeitungen unterwegs”

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 2670724217

Proof data

Record hash (SHA-256)

091b90c99c6b1720d2c4005343c21e382a150913cce0ce9d42701a3036455648

Signature (Ed25519, base64)

bXanAVGbkSeVglKCI83EHo1idDpOhN+k89jXADxuR9oYyz1hpxcDgR/aGvWMUSbwMrVclKpjy5DbI9KqyqJpCw==

Merkle root

d1a08bffaccb4bd5530121134500726bddd8b9ce14544f30c175069340e2f6d1

Merkle path

["091ea6b5d18237b17481055619b0b4d5bd618c2d7cac2a2922dc29acd0e5a653","6c2784f21aa410f8ece374f490f44eea032d89d1efb7a3c23231185ea2c5556d","51416f61a79d1ca912e5861ac80825a5e81931a467c4f3bcbda65753fef1f13f","aa2c6263fe87304c270ee3bf360d95f22ee75f2f2b8353c9f6e0cf3a40c84934","5af67cd7b8b35ae2e63e1da3f50409f9fbd2e2afa5c870e84461a399519c44bb","10a03efd02e2dcc572b87fa02c428f48ad689cc9e1d05ba29e192c10334520ab","474e3b29982aafbd57a50576785c28bcbaccc74449a68d44e0edf62c20992741","ccba445140b419c0f6ec913c1b5d42e28bcb08577031e9602948f975c97fccf7","9190d1a1b3de99b9828762fea2ad0c8abb4d5dfa81665faa3a05abe762904785","8cc9fcb62d91cba50080c41074019df550002d38c8caf0e6578e5703999df9dd","9eaa2cb33eab31da34a1f7ca1369a872d958dd47513041518cd8267e3e3e12c3","422708f79a43a06560c2c80c58a4791f51a0b5498182b85809a9ac791b982ec6","25b83424b4327f2e26a2b3a1a83c1014ab2556207095e3d1112c414a2906928c","784b674df69e59ae8daa59037ba258b386fc987e1baae63fb09b14c7d0c016b8","09bcfd9352291a4c3cc61839df0884138937d69497778283c8e6e0793ca45e03"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2670724217 · entry 108e9186e8c5677a8322…

Expected log hash

db226267e29a9b0d4e7d26b93b25b0493252e02586281022df7cbce6abd08871 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":"v1788230131663","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Großartig für schnelle Bearbeitungen unterwegs","rating":5,"review_date":"2026-07-08","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 (d1a08bffaccb…), 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.