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.

“diese App ist die beste Karteikarten App die ich je in Benutzung hatte”
Google Play · 5/5 · 2026-01-09

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 3241084060

Proof data

Record hash (SHA-256): 2d790a66f2d0ec73156a99b12bf57ad78b0c5d2f90bc0c0332a81a2a2494f9c8
Signature (Ed25519, base64): u6yvLIw+FwkajMK58Pqk14fb1huRPDqZ//M4gIZMoy7/kxaVLc6DYhQJJAcxWlQ+RQfeK4Scu7F5TuIYls2eCQ==
Merkle root: 0b0c0499033d3f9b3953d31e6c838f88f12988dba810dd4de44922e1b60fcdf6
Merkle path: ["2d7358c79c151d84a09f4bdb2d048c6a216de93c6a7cb562b0aecada3d4ff08c","a1678a78ab0f47b99995775c1f57fcaa520da135b63e8acc803c9b80e68f94cd","42e519e6cbb61a034aa482b89044d8285169eea506b7035befea1ba1c6b3bf3b","7cd515dcb0ba63dd2d886d71fe3188c95c6c4dfdb90cf77980ff43678b50bca5","b5589fa03df3d41dabe73f374e7c350c132054c91ddc558b53bbf6bdf9d56a15","b2c9943d46574d75ea21335ea8ad691123f89d65c8c4c5eade9f76400f5da60e","6dac04b291c7265c0747664168d691b8fd3719eda27f6fd94573b9fbae80cde0","b1fef0e09311ddae12bf31b540bec04582382f3f10906e36d7f66fcd8abdfba9","58979bd17d34d998ab8452d165dfc009c6adaacc2a8413d5edf0a44c36120327","a94788bf178bc1e727f0ef1217ad8966d66bf9e31d1bd1cab9bf6e5a8dc6419d","fcc462e15b27af6461b91991c283826c6009da04d123128fe13ce19daba55b03","a2192486df88d4dc6da5dd9f9fe72a80fcb0210cda38213ab9466ef5ecabcb4f","fe7751fa4b9a0ad43fe0710628b6cb1b92e12eb8a60d9f17eb0c0764d693577a","8a05b9e19287b30c7fb54816a1fb848939f3f2c84b9825f19f342683d5db13aa"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241084060 · entry 108e9186e8c5677a3e82…
Expected log hash: a291e2473f1a4510a666e020d4d424e463d55bf4677b91eb5a52e446e5ff1581 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":"v1791865115768","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"diese App ist die beste Karteikarten App die ich je in Benutzung hatte","rating":5,"review_date":"2026-01-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (0b0c0499033d…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.