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.

“hat mein PDF in kompletten Unsinn verwandelt”

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 2621946731

Proof data

Record hash (SHA-256)

09538f9c82baa067c981ccf6f504160213a496ae0925cf9bfaffcefd04037a39

Signature (Ed25519, base64)

n556566YcTdabbdoKLS2y1OdNCim1q5ybxFpB7s6m5d91WZb6m6zYXuIWkwliG2PdDW6Isn7vvzoNZMa7ktJCg==

Merkle root

3dfdf7381c8d7ad52c2e382f4e16b6f321af764e7eaa340297113fa50b9a0792

Merkle path

["0953724afc18033d44b49bae208db6d45a3036712d5f4ad6dea1a5fa24e26193","1811ba294dd8e54bf8dc5163df221dd665b8daaaeaae16c951e0c51c5af89415","c7bbeb2166536cd07254c810e09c638aee9975e32c3e6742d3437a0eba1a698c","4bbc36ba0929750d39670f50bfc59df32f63d2df2b6cf31416c30ea4faad0380","fcaa46336c972d238d4995410755440513bbfbb866bb5a2d90bf3f2f460ba9ad","7b7bec310e39df09b856ee2339ce6d9a605eaf7ff95b10e2da22ffea6892f3c6","24c1323ca7eaeb12438d48333a556b18f8f80fcdb6c39f79d2762214118171de","4b8f26f1c04f55e121b1ea19f164e7fe3d1ab9408103e6c423be3ec09ab088f0","a16531ea09ce7a43f06a4a7953e3ff2a85666ce432ee2ef3090bac6154fb1e7c","52ff7e4d47fd44aa1bbbea0639f6052ee70843863a737e5ed1717bc5f18e6ff5","a969e840d4de72a9205543e10906b676b72b32979189e08f13c86083e720650c","81f5340bb1c2a0054bdc2b1c036e86ac1d05247316c250aa07dd756a5b01354f","83e63a6d799b1ceb15f089aa785a41ce6f782296862900005501fb5bd92d886e","81acff1af3c2bfcaf656a4ff2b93eca8121fe44c1d5b5a4dbce370acad78d2b5","377cd45c8c0bf5fb2c54ade6d9c4a053bed5d007e1a30f5279132a3d565864ef"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621946731 · entry 108e9186e8c5677a0a42…

Expected log hash

ea07e2ac95e2432412286c8e9f169e876b2f38f9762d26c0a0ce3cc128edcf3c 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":"v1787893493942","kind":"published-quote","locale":"de","page":"theme:smallpdf/quality/de","quote":"hat mein PDF in kompletten Unsinn verwandelt","rating":1,"review_date":"2026-07-31","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 (3dfdf7381c8d…), 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.