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.

“Der Premium-Plan ist fair”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
adc0a0c022d95d391f570fbfef485f389b7d3218d738f77171263a41355a2066
Signature (Ed25519, base64)
YtJNwJMnEkLgZPU4za4k7oZmbf9E1iSooySpdYzO9NuvrlsSedOISREqwARjeCgEif5bD8f8r0XFbhgfkfPmDg==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["adbd86812d80d25bb6df427da3d28b284950b5129192daeacdcd92bc50aa9695","c7c320a811dfe111457df661127ed548d1b67fc3d5d8fed47e0ad209184c5b3e","39fc0a549fb86bb26bf2b52a6ad2260b1b6b7aa3842fe881381577f661b0e5bb","f26b1af88b0344d9014f537ee15fcabcda9298e8f52fdc1c9ba900f512691da1","52ab0b55365a6659df36ace163cedf062b10782e95cf522a049ea148d24e7a85","b311e1926b745bfbbfe16b83a7dc38f43f7cc5d9767ee0ba408a28052d8beb04","6fac91b334609391cb32e7883d5f9e14b13c8f9a08763a913b2c8cfb9280a151","19ff9c143e3d24530d9a11fc1222fc962e850f99b233d259788f783fcce8b957","d4e070a6559e534e71d724abbb1e23de8e67db818b63b3c157910b603467e63d","3182f41bb5e5b18a298a470d0dac5eb76e44e08277606d7a71dbfe71f47f05b0","302781f826e4e27dfeeb952369e37835d487d944454c4a4129ac11187f525b5a","d0e82af4a03d7591b930166e680788d40e9d0f467d2d9124361d17c683e6610b","e73087a4c89fcbfd62483a37ad723e600377233e603592ed8ad92c5db69f30f2","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","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/price/de","quote":"Der Premium-Plan ist fair","rating":5,"review_date":"2026-05-17","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.