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 App ist sehr gut.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
604810c344dce82ce4848e15a22a8cf3872a3bbf0084089988d158fa00fc90d7
Signature (Ed25519, base64)
cK7G/QvvHV6dbagdFBSR2SSxllYzU/ruFb1V05K2UcCDgO8S1EOVOb0WYSXFft/EVCJaTXT0a7oBAO7ITO3vCQ==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["604939c8f0c201fa05fc5fb99927fe6e4776035126af8b9cefece1a960bb6b9f","f593e312ac700d0169df57d27abf067b432757129914bdd677e6053283eac4a9","18216a530f8e47be1f832f76bc0051377139ca85e45904ae6aff0f40046a094d","d339bb79478e54d16c22ddf4570528be7a77a9bcdb10750cd197e7179683ec57","606b055f7f3669facfecc5f0aca6ba215629cda696920363f5bb35d6aa829258","111e67537eae294210dcddd9ba7bbfe0335e92430d073ad76340abbd48f0b799","54b47dc10b9e7125031d09a8a7fa44c61224039487567322eda2b6400ebfe212","d1226f6002c9b047c0c42638b4d899396f4215896e767fb669050dc04b188803","5c07a1a87d2bcf42b365b3b96e7d755ebc62f7cdddbfcb700dfa856ccc8760d0","02e83066a2d417a6b11590ff406ecc0486b921ac6635497db9aec9ad8cd5c83b","3ffc4d7ca09b39e0b9dadb921b06581d3652d248d7ed39418b832cb86366bd66","40bd9581780e3da9ba474021971a27a2b963126bf33adecf2de39d29e5b5c2dc","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/delivery/de","quote":"Die App ist sehr gut.","rating":4,"review_date":"2026-04-08","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.