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 lange glücklich 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 2684971219

Proof data

Record hash (SHA-256)

087742887094cd538bc9a7ba50e7a9579ab881783fd0acbcda5469f8d80ef2d2

Signature (Ed25519, base64)

F/oZfRb3qH9NUGbDSDSoKfo0JJeSb+UWbC+lD+5mK9nYHV2ab6MW+26P/Tr4d88drmnN7xPVJK1No72cj4X5Aw==

Merkle root

5d4c740cfb04de8d4854517684b156439ff79300bdd067e79539539dd3846340

Merkle path

["087a9bd8f8e4dbcb0dbf066db97697e06ddb6c7a746536d21ef605c58edd6f9e","ffb963240cdf73796721b27207bfd4479c9485c5c1f19badcbb425656e09ef8d","3dd86e7759c07003af3771a7f67609cac5895a2d5ad303793af96e8bbf525e3d","8524c58c032513eb08d1c004b5a55339dcb1f4203b3472004464f1f91c8995e7","b2dc74354c8a8d9a7414708b641418a5e00b32a4a4cfec2b320f46ab04ce7df7","7730bca750d92599af90730f2f3cbc2eb132e4412eb69879ecac825672492540","b110ff489fb3e088eca6a61ac694c667bd6e04b600693bbb2fbe738db67c837f","8159fe649b6827e19a8a7b061cd90296c8a726296d60c708626592feaac7ede8","50538a4d1f896eefd12759d2dc2763f6489f266ff763ec7aa5ce1e3396e0006a","a9b0ca4045948ef48f2df244965abd47918725cdc8403f13f9fb7696cc61d92a","e8e90b1f24d3289a3271f708fb31f5dcfdd2ccb5fa7e0edb54f0a15255e9fa86","3d966bf9eb9c173480976357bfad8ab8a9f30e0030ad2552b80594af72683aa0","5e27b068076e1a64d2c4a3f8b0e7d48cc15ca396e4e09f17700344f4530128e0","a377e8a70654e5d15090d2c58b23722fc9eaf89fbf61d1f3010bc694e59ee4fb","2e63e22e3b767e949db06640d7c1058b569ed9fafcf20124800547f9cce53523"]

Anchored

2026-09-02

Public log entry

search.sigstore.dev, log index 2684971219 · entry 108e9186e8c5677ae85c…

Expected log hash

fd3192eb36809a910252a34a8f2882c4830a1a219dccb9afb1f12e6b5620cd6d 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":"v1788343168574","kind":"published-quote","locale":"de","page":"product:smallpdf/smallpdf-mobile-app/de","quote":"Ich habe Smallpdf schon lange glücklich verwendet","rating":5,"review_date":"2026-06-25","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6a3cb7ab9cf28a5f23c03eb9","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 (5d4c740cfb04…), 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.