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.

“wichtiges Wissen länger behalten”
Google Play · 5/5 · 2025-08-30

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 3178600936

Proof data

Record hash (SHA-256): 3381d620f6ca7d8e3a1045fb9f69ab93a87dcb697fdb1abf2967b170da8c8589
Signature (Ed25519, base64): FvL8saT5TtZdagF30k65ZYn6W8eAJw86d+tbYW+dTMp9uhhOlvnCPvJrMUa1/dNRiJAJ0wBA8/O3U3xLTcs2Cg==
Merkle root: eee462924587f8024361bc8d60043805cf5210f8bd2ef7667df06d093552f9e6
Merkle path: ["3380c93243eeecbaeb9b2d6908b95469e415a33a823d402039536ccc4c637c3a","208b759f508ae3d7e8871cbc7c1fe63a783c6dc6a11e2eb9d33ef18524c8a9c3","9ba5ba4b37a1cca9b88efeb91b75e94e2d66bab47396f956d48c2a49f7f50318","af91db7508c154bc992655bd562d72683223f1bd361b58dd22793dc3c08cd4af","b860a7f4bcb04c4e0657a99a52289be740470637986e6fa62ad50bd2eb8d46a3","fe0421645a75ea91e48c80f11cda65bff1dc0bacc52334a5eca174fe5df3d241","3b9313a3dcf377be4a2edca3e5b36a72ced9084460a0123e0793f39d651dbb32","e85988109f57d07bf133a8944ef47c8e1693d0a401cd7efc913be13d7e6acd53","b8f741cd74e77120d18deb265ac13fa8c3a1fa098d5a01e23c4a9cc0d6a68623","5dc44ec9a09b9580c08fe9ec1d17c83f6861848d98385c17df4903742b419301","e22e78fdddc7eeb3f60668ef62b942f372cc72aee0642245e1b1d727cf368318","5a28204f9372278679ccf6b3ebe28cb3da342cbf292d2015dc590fde73763288","2671ebca141255a0c11a3bc51354d8cd008634f7e59a58a3f3f9dc756141bb9c","a445a39a48770a8fbc5d87a405ed660d401fa810eac6fbd1d284a96f8c7d5503","452f4fcbca19997a15e6a6869c50e026ff02cb90a6ef21da106ee0457e55941a"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178600936 · entry 108e9186e8c5677a6a91…
Expected log hash: f3dccf508afcb5e89d56dabc8c5aead85de215b1b896d057d463ea1c1bdb13a3 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":"v1791606586319","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"wichtiges Wissen länger behalten","rating":5,"review_date":"2025-08-30","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 (eee462924587…), 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.