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 wünschte insgeheim, dass diese App nicht zu bekannt wird, damit sie nicht kostenpflichtig oder so schrecklich wie andere Apps wird.”
Google Play · 5/5 · 2026-03-19

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 2907673729

Proof data

Record hash (SHA-256): 4d2bf11325d6dfa7ec3a8c69ae209019437ece4f658b903528946aabc8ad83cd
Signature (Ed25519, base64): wdUpvRMSJ9fqfQOqt9yuLEF9Gzs8CrAHqeSqMiK8VtgjLzsMiDhyBXCwSluUXNKuqoOyh0fFPmS3/zKdEVKCDg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["4d2d50e1902c100b592970278715bcf955c5c586585c8577909a4d7620adca46","2330fed6f816f1e3b118861fc0e202273484e74ff80ba132c3da086b2322f544","68be6249bc9e59888edea58db5beba897a11ffddb0c9c30eab14a46f15d6a276","154d40507fbf5ae1d4000e4213459d14e581dbb8605b22725c3e0487c876f7cb","66a3416f2290cea07cc093f074bddc54c16860227aeb6bf110dc6bc34457bb1d","dde2c76748b0a6b1a843116d697e7c8ede0e6fbdbd04a0f3ad40827c5aa92dd1","3459ec033ec7a7de396d11493322d5b714d667f1af2c2f5504d1d89002759213","3de1ca58709bf02c72f01e5a33d16e5906b3122ae5e084175bc7e88dd5ebf513","1ceff1a56d306a5403a4991e63ceb30fa063aba9bbe4eaee0d9bee2f5d091fe1","0a248bb2d9de2bf2f74704e7c7c027481bdd2e66077a8498884d8fa945696d40","7d0a97ae88d1ec4b960642b3dc54d0419bfc6e1cad0abfd4383c77fc83cb691b","0197d988959ac12f7d8946ff2581c88b7ba9a4305193828cca53fbbb9832a064","bcc0d977b8ab2060a87584efe5d0f5545e840726716d3f02c248db108122259f","6c299608515c69a03540be35865f96ca4932f3e0403f8f39fb0e1c2e2aedffb4","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/durability/de","quote":"Ich wünschte insgeheim, dass diese App nicht zu bekannt wird, damit sie nicht kostenpflichtig oder so schrecklich wie andere Apps wird.","rating":5,"review_date":"2026-03-19","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 (b9a08f9d6d76…), 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.