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 war sehr einfach und simple zu nutzen”
Google Play · 5/5 · 2026-09-13

Checks (re-run on this request)

✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
✓ Public transparency log — Sigstore Rekor log index 3241341297

Proof data

Record hash (SHA-256): 5bb9dbb4f73091e07c77255c1c5860050cd678293fe41dfbc99c20eb005abed7
Signature (Ed25519, base64): 8Y3EbZCbFwL4jP96kH9FkxZUN7raGp11KJtMHS6tbteOowmOIXhO6MYlRmpQbAOxBRXFfE9XNqwb6hwXu2jaCg==
Merkle root: 4900b1080bdcd3b4c9234f01647614e7004e0a1ae01ead44968e31abeab33265
Merkle path: ["5bbbfda6c663b8b35246d858b210620f0532ba97d9d53623d0d7f1a0e57cc4d2","08dc856abb12bc5b0faebd065e325b1c16589a04086170dd4f3c608851ca5908","16183b4d575541a39e1e231267360acde9932dfa51f0beb824147d9174d14dad","e7c8e14ce3ccee05a60e89fb28da98fb3813d9a3d6b990124dc704375fcb5fba","c617aff83c52fd268e697725fc52ba95e48c4d884d2d1e51859a759acc997807","95561efbd218124f8f1c93cd43cfe98fd57e18192b942f9a50b4cfb3859c0142","095e1e81d5a7686fa147a734c2b1839de8cc95148729f0baf6e2fb0385fe7bef","4fba2a1a9b49ff877e8ed04f5111b9bb98c49924c3b1c77fe853f0bcdd1d79fe","d3c24a120ee18b8d54b241170047c175848c14a8c1ec78e7ac5f9c818f770d6f","6e306d44c3bbf63ce227a4257ba5e05acfd1629f02466cd29f5c80ac63fec52d","17361d2175a6014fc2dfa30fe0ba75d32fc3ec969aa9434655602a07b59f72e6","8bc3d3342d538ec2e52c4659d41fadb97b0038a716b891902f4266532368bde5","fcde407cd823adf65f7404afd4b1ba5062d4dc9b443a0ef9b9102b09f040f91d","0a4842003c61f69c5923b6aafd56426e7fe934e483f7d15b620c07fa61f89152"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3241341297 · entry 108e9186e8c5677a0e53…
Expected log hash: 39342fbb95f8cce5be4111719e5450984494edcdff99b8bd9a5c0d2303b67943 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":"v1791866192176","kind":"published-quote","locale":"de","page":"theme:zasta/quality/de","quote":"Die App war sehr einfach und simple zu nutzen","rating":5,"review_date":"2026-09-13","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.zasta.app","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (4900b1080bdc…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.