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.

“Danke für die Erklärung, warum man falsch liegt, sehr gut.”
Google Play · 5/5 · 2026-07-27

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 2907673729

Proof data

Record hash (SHA-256): cf4ffff3267be874e5fc1bd5530fd27096be2adc61c400870f0b8ef85d353557
Signature (Ed25519, base64): Py3qvUzJOzD5J3ygrTuYpcdrPqjUQJPOPAEraqamDw+p5RwQtnyubrD9RG+MWxMQzeKVxhLTFgOlxXHdwkKxCg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["cf56fac7150a9d9113a8599f1881fb8af2cc8b19a766604039115f42c32366ea","3690b83b9a4b0406df4be52cf798097063ee674448c8e4666956795cbd58a207","b8d1c1283becdbc239af1a8f3b225b002bc9f8ea42717ce255dba85e2b86af6d","39a400a7103c7ea9baafc5f8350abf8ea8dd0ed62962fb25522763690546131c","eae1621416554b0ebdbcc40250d6c6e368ad424a5f1b9a8193cdd54584beb4c6","096fef10af90b979e13a4ea6e477ab0ba4a95405dd57400492b3434fcfe4f211","d551b72cc354779fcda115936398fbb732f6cdf652064b10ca88bd22669d3a5f","3e44436c7f9700004066c66a9e5a28e963a7a45e00c9d5d1e3c69b2f1842f7f2","f2dea97a24938ca7c91099606fbd5d65dd59dfacd551bc333b5a4d47c530df1f","a42a21c77f0f0d8f54adcb950626a5c44276eef1210ab57b5a18ec668122bdf2","8401b8939dcfb94a48793e7552a885657c9d52892d88c0004505559f51cd6d5a","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","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/service/de","quote":"Danke für die Erklärung, warum man falsch liegt, sehr gut.","rating":5,"review_date":"2026-07-27","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 (b9a08f9d6d76…), 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.