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.

“Schlechte App”

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)

0860c2bfa4346fdae55d28215caf0a85206630b1cc02d7eb30276bbb48808aad

Signature (Ed25519, base64)

xZnznHP3ux40P/8TYdWMXmI+4jfzmQ4QQ23jD1pQfM1Feto0jxQRKQ35lQOC1AgqIb7sC/sfO3sIwz0vH3zaAA==

Merkle root

5d4c740cfb04de8d4854517684b156439ff79300bdd067e79539539dd3846340

Merkle path

["08611abb294f7ab3734176618bce23b1e3634a77afd2859bc1c451a00b0232a9","341e586c947158c39ef947a41c37338bd336acb9f9cf7e3d085d300dee8479f8","648917a9c560a641c2d111f2cb0ca4eb5b91b36c121fc0a91f4313bfce0ad0c1","37b39e0c0d2262691d0f2720390fa6a8f54579a27b0bbe452c243c46ca275a8c","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":"Schlechte App","rating":1,"review_date":"2025-11-17","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 (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.