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.

“Ich liebe diese App!”
Google Play · 5/5 · 2026-08-18

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 2904877428

Proof data

Record hash (SHA-256): 6a808ff9fb10e2ab21531d4ba156d7dd27faa57895d326983c62a58255c49c50
Signature (Ed25519, base64): 1l+q8H/kIAVSTTSDSPTY9aavNlIZtvrIdeo0TG3M3yqWuVGcamZKdn/5IA1Zr1RJhHF3MAAa9WsRVeqNKPY+Cg==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["6a809095cc88dcb936dd519f053dc26a615d598578a50fa66605986434e6fa5e","7c4bbcc46f6f1a2aaa963949fa2a468739311f47635c3e5960c12aa8634011e6","1f75d943b615f737c011294f90bc8b06355286a063df6813335dee5a259e5b26","4c531fe07e00843c74f362b5709563d74f6ff061e60ddb6bba36f5306daa6c69","c2bb8e9f4d1818da7885d2a0b0c20b362b9be7d221577c5c7867f1f69e4ee08f","014e668a9dd9b635b6111217b4c8dce07cd5d5269798588cb1506955e6899893","260c0ff39977ee9fdf7e3bf0e71a7be96af9bb3a3d42349ade3edd43582e7289","e24e116b75914eecb0a885446517965d0030f9f478121a2ba480733fa387ea3e","acee80f84e2f3207267a0c4d86038a112956f5a2e9ce7119f06e0d83924178a7","a11d0a695ae8e3e8a88068cddebffa9165729ef291640998d776fbaf6a5be10e","7aa88fa946d4600db4322fd5c5c7e63b06825a08572c8be8ee7cfcde8d9d2aec","f66e3f0908cccdfd396cb0e5dcc96f2570e4fe1056c45eec7a7025dce074a563","ac995c9ae640659c6b258d62d0cad1933912ca122fd33d27f90560dfd3199a84","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
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/fit/de","quote":"Ich liebe diese App!","rating":5,"review_date":"2026-08-18","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (e299bf38720a…), 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.