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 App sagt, dass die kostenlose Testversion abgelaufen ist”

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 2612584084

Proof data

Record hash (SHA-256)

093ab307482c66099cf22a53b487b168ab40ecad02ca24c031e33dace27c1f43

Signature (Ed25519, base64)

s4drwv6JqiG4uXKWGNruP6rfYzmD8CveemxDHAxqmOiYkq6YJzbhUSdiUdYdxV1VUuV2LIQsh7AO4XSqy0x4Bw==

Merkle root

11760913b24394c3efea903b5693403de67f30c73517589265e62147ce6d7db9

Merkle path

["0937f1e18543d5b2a9d77238edf710cdcbfd856aa4678e46fac3d1be059d224e","a720d9730d6eb30adcee86729713679ba516ede8badb28e84ac095672e507843","3eb1cf4e5bb00442164beec0e2b780d2cdc166300701c72bd8c55b42059f96b0","fa3362ee6645bc02a57edc986bb42c158b00ccc4d2d075c8aed42045ed7a1f82","ccf15efd6496e6a55ed0fa4a608fba2f679ed8ece551d0fa35d1edf950a2738a","83054a3e88733f820cb2581ac8970d33793d23c1533ee552d10950c1b9d8b342","b64398bf0f942af01cf5bf8f441e6a2a708de2691550dd7f525535b43092e21d","377ecffcdc80900605c116a82a65de628cd7405af11d1571b635397ac4a09267","b1ac28a40eca9f09064ae31f47a9097b95ac73532873a527eb3378ec97e81e2f","66ad941ea175664c11626a9423c4fc095091e6b8002d520af37f066eaf89ff76","ee3e6d1de476a7ce3dfc53a367d3d995ff810d2b3b5cba0fafbddd836558e142","4e02c6a47369138d0eacb837d8bed87707d8edf6573bf9a07b0288ec7a1a3832","bd8f0b0faf9d3ad7c16d60f7a01c003de274172458ab1f670d78e9cc1dffd585","4d94d9a9168f14be08d81b3238e6d7999acaf99b1233bada5f6c2802401f1b45","8cba8822ab29049afd67fa646ac9379523fc6be8932688ce4f3067f563511db4"]

Anchored

2026-08-27

Public log entry

search.sigstore.dev, log index 2612584084 · entry 108e9186e8c5677ac6bf…

Expected log hash

0a57a1a3ef828bcabfde2971260e46ab649b0f8c2c96e231d49bb83e51a8ab3d 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":"v1787801559681","kind":"published-quote","locale":"de","page":"product:smallpdf/smallpdf-mobile-app/de","quote":"die App sagt, dass die kostenlose Testversion abgelaufen ist","rating":1,"review_date":"2026-07-12","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 (11760913b243…), 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.