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.

“Erklärt wirklich gut”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
eb0cf71b03f4035837ed7f9b3cc6fc140964457661df7dd517c360267974aa90
Signature (Ed25519, base64)
ZQrItZIqu//hNrrZPxJ4A27P5ejWORX274lsFsXAZz9jjsMGZKqIh4ajh1szbLlTdHg0NzB6H6ICCiAmX9iCAQ==
Merkle root
e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path
["eb0e3f4f4c2f063edf827e0a5ef8bb258b41c97ff65ff71dc31d32f230985b36","77dfac313cfeb42cdd4e9bbceb8282fb3f24ac403cc1abc8727d043a732182ce","c8f9bd9440ba27e1def516769740acc8e3915beb75b2bf3873859be0a14b38d7","2bf7a4fda77103b3fd958614990159865c88688a848c784f91cc55b1c1e69bf4","b54211df1b184f57ecfcafac824a2df80ff7e4c74d18e90373d1759a1e0cd54d","68099687df868b115c4693c64f2267a79844b78b59ec9a73b3de94d765947a5e","8712339c7bad4928b9cb00239b7ac81bf85c57bf110ce9bae4a50b771dbef797","de97694bff858f7a5d6259c6a1025fd8344a3d513c2f5f6d9f28e3d3ad2fc1c8","eb9bb045fa8d590e24e02ffe9577a956e04048ee3929d88ecee8b511ff062e12","85cf02830a8d5647a5f7705ff7da2f830a119ee29dc89474d5bd79676cc972df","61847aed1e15fe38603f3749ed4f967e83902fabcda16f828dbfb3db9a44d565","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored
2026-09-21
Public log entry
search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash
d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:vaia/quality/de","quote":"Erklärt wirklich gut","rating":5,"review_date":"2026-09-14","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 (e299bf38720a…), 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.