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.

“die KI ist manchmal nicht verfügbar und arbeitet in einem sehr billigen Modell”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
f3f79f6fafa2e8a5b9b94e80d389163cbb72096f263607e7ef3b15a1f776040b
Signature (Ed25519, base64)
bAoA49yNNcwqVZlTFIQv6Lxe5VxuwP+U+sgDepB6T36wZvq28hPqJkbxJKYdfRWbdtzmHYtZYCmHDmSYqXFkBA==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["f3f7492dee21b3ae07370eecb2ec0e677683bbec4c56cf12d2a11c86a6340fae","57cfedf18c07857cd23df4a142d000980f76e3223d943da8ee1f7efe907bee8c","15510915fba160aa1f2407979673fe148cf5431950340515939915c7b3072871","f287516075a08935ada01aa6185241cee6d94818982f188e60b140e6ad334050","b72f1642b75d40a96d2d4c7695102f2f3195a454e8d27342432755d5b6b6817d","b8c99c46b4739b6c95b75f736739ffd6e4ecb63226d35b0bc8db0627b7dc88b2","363c5e0e6608572bdc9ed4590ac896df5b34d1444f4cf71ed9d75045ab602f45","fc07e02e88a7f4e30159129cad3e229388a50184a254a615c67159b73c0c2623","f3b18e602df6fdc88edf582ea02dea5f20406e3e3fc2e8a60e1918a8c7784312","2ea6bffa9673f3a81bbc868569f3e6ff306870034622c6e56499753f4c5dd170","1ce8185a67fc0f0f175627564ef800e7835dfec27d00240c56e1eaf3b636cfe9","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
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/quality/de","quote":"die KI ist manchmal nicht verfügbar und arbeitet in einem sehr billigen Modell","rating":3,"review_date":"2026-09-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.