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 bietet kostenpflichtige Inhalte an, anstatt alle Lernfunktionen kostenlos zugänglich zu machen.”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
8749e5b1b3f18024c82595f28b76108b96a564d28fab3345b0041141ed42d561
Signature (Ed25519, base64)
48VYrOJfTxOFLuAd6628A1SebNUXNvMtcsIQhXwvfsc7XhxI9dGVOEBpt7Zyv8UN2DvTAd9gLhAVzgVxqod+Cw==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["874785530640e71d24d3eea63acf36068155a10bdbd4a093dc6e34a8bca90d38","6068872b93dc4150bd310e14cade8cf69f200f7ecabe3d089d012f5bd126081b","1ff93e8306bd73116a0eacdc68c822fb00f02744b1ecc99650170517d83e96f7","2b26832fd61f5a5bd1ff94f9501e739d12cb882cb519f5e7ae4f5f816d2d55b3","c3611cbf54ccba9b9fb2e59141a80f0d8cf2bd63102815552d25d4c311109bf7","ed4705b9245ae3c13ada4688f99f4f5d242038c67a9f25f94c41ec9998edf62b","407572cf0864913dc94fbc018f08b860f36ba36e6c8f7daeca7eeabe7d21781f","b147b534391b2d9872c107eb53e269d4efdd95c11947f6192a7ae8a9f91b1baa","fa346198f719680e8877b971c5750cfb56e16cdbf15788520679dbe2a11bee1a","8f5b698ec5ff0fc7f38e616167b98750c934b1dd7b41b09f8152c15e06947dce","50bdc76befa6ecd9e0c334b3819af885dcd126bfdf66736d3440e5dc53453af8","d89f5af62fa7d0c6d0a9fe42e9680d2e7af53ca738a716457a3405d68b60cdb4","8b252735b283ab7584d9f6925f08ed38c911c64db001463eafabe5061cb6f9fe","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/price/de","quote":"Die App bietet kostenpflichtige Inhalte an, anstatt alle Lernfunktionen kostenlos zugänglich zu machen.","rating":4,"review_date":"2026-08-10","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.