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.

“Ich habe Smallpdf schon viele Jahre verwendet.”

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 2671093901

Proof data

Record hash (SHA-256)

08883bcda03ce030d8517f249a6817b4aaa8b95b172247ee3f7461d92c6ae319

Signature (Ed25519, base64)

L8xfmQsKemuTPmSr7wK1hvhaut2lf/akmFlLZMScnb4AkZQGmrkalqZmi1XAQHJSC1JD1Z8VgaPvvsieyVHdBA==

Merkle root

1394768b0826b6b937ff0b31004a422bee2419644b39fe97fb77e14074b67bd4

Merkle path

["08884a13b879fbd800f981df0db3a88707be638add92781c2ff7aeddd513c002","0f79cfd71a1d4577e49eaf20cc58bc104bf6b14ebcda5937aa0646b2428355d1","6903a96fa981cd37a75483ddcc000650302932e9359b834444a943c1739f7f11","49acb51f194c83bb57d0b4164d259b3168a051ba4911c3cc2605e752f757a2b0","2fa114461e6b56d26b98a2cd861525bed34c57f0b18e9af36bcc4333f1587af2","e50ae0cc84608d7cce6ed3ae6f43bbf635077c85f30dda2ebe465e29c811cef5","8c1efe3a49a4aee1e5170ca6c7f04c9238c28940593061166501059084f5513a","ce7caa3fc1b860251acfc0cd8a2bd6857dd8b9339c41d394971f09e57b63f1db","8d5daeea2c81e0c6026b21321fed957fd091cbec7c9e5017180b870425026d7a","d04db84b3598aae56bf654991fe4c986698e185f37578fb51c2de01e39a4ba9d","5c540a70a82b2ac84e899a565a532b2e2999db4937c31c824bdc60ce59764e6f","52b2c4a8d2bccf71f3075d767fa8d390e76ae1c508be885212a29f3bea41c41d","7abe31e12d6c8fffef71c3a666a728674401fe7c669faaf1386bd07be69da5d1","3e5915c1d5ccf543ae966ab1f581b7d947356c48fd6eb1769bcd77639aaa067a","ff7db8bf767e6864d9791ed835780c06b3f04b9b86a4e7b38bb489221b57ef0e"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2671093901 · entry 108e9186e8c5677ad1d6…

Expected log hash

c8e5f7895de34ce4719896fef161b45264e25a8df573e258498630d492ecbe4f 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":"v1788232827800","kind":"published-quote","locale":"de","page":"product:smallpdf/smallpdf-mobile-app/de","quote":"Ich habe Smallpdf schon viele Jahre verwendet.","rating":5,"review_date":"2026-06-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3d675adb4393914279e032","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 (1394768b0826…), 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.