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.

“Dann wird man direkt auf die Pro-Version aufgefordert”
Google Play · 1/5 · 2025-12-25

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 2671180029

Proof data

Record hash (SHA-256): 0883aaa840cd507d14b8e5ffa84375eefa925f54b1207d19d9c43b6700b416cf
Signature (Ed25519, base64): cA2Fjj9ibbImY8AmRGavn1+531jjkfH96kmwiRFtC4D5Xf9+6RtEvKe9fdITykUwmuOeVjcpKScaLGc0ZupWDQ==
Merkle root: f9a030a573da3b674a3e48c677288390a434ca97a740d63af7477bb9b0087dd5
Merkle path: ["08836b87055995c2e15da79f508fc8d214556ff9c86ac8e52a05b4374e894f7a","9bd2e1631bd75ee3cf043506e559b37aedf92c3ab781122f45dba87dffc49568","200708aafdd5330f59fb4342f3268aceece62d9bdfad72bb670de620eb08730d","bafa9779f45e3fa4e69fa0cb1558a04c9d6115570dda5457e6e36ac03db5c34b","91fe07735c8475c8f65f5ffabc33b67919145be11329fe490635c0f92b3a70e1","0ca8108ea57daf8fd590bd372edf3b3500af81a4c0977e2f16204eb2a9f38871","91d3699e8da29d8921015a199296d269bc58fe72b8829ca633cc38c2856b9371","f4bbcc09a8c9eb62374d60aef3e4a766af7ef59f7021aefa3c164eb72c418154","f87c6f7d7ab55601e3cccc85dfb79289e04a23cdb27b839861e3405f4d6b975a","d26ead21839bce1d0f4a610c0ae3a4b04c3763899f27a0cf62ef04600205714c","a7268e3a2e4a304c8ba3aadc5b4a98bbf743395e23b9fecb4fbc48e95e9fc55f","0092e78b615c9d228c03e53096ae4361365857530df283c6dfbf776a613c6526","4ef2bda7f26eed09474d0de127a9ffbf5b18c0b39b7ca05e262a0cf569ba9981","123f459bb0d221b9be08e494016e3b59946d910cadbe6bacd03f308db88ffcd7","e08301f62b5ff22d13e806e4fd3e64913f665178fce99d41471461eca04be078"]
Anchored: 2026-09-01
Public log entry: search.sigstore.dev, log index 2671180029 · entry 108e9186e8c5677a15e7…
Expected log hash: 0c7ea517d47f4c8d05e0565112b0ba6c031576195cb596b9212fca396bc97897 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":"v1788233488301","kind":"published-quote","locale":"de","page":"product:smallpdf/edit-pdf/de","quote":"Dann wird man direkt auf die Pro-Version aufgefordert","rating":1,"review_date":"2025-12-25","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 (f9a030a573da…), 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.