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.

“Sehr übersichtlich, keine unnötigen Spielereien.”
Google Play · 5/5 · 2026-08-09

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 2543154575

Proof data

Record hash (SHA-256): 5f9b6a4dc1da011806f4252ae972fb836374b7374f88891b974aca9a9cc2b3e8
Signature (Ed25519, base64): v79l+UVoPuPljGp97/ZtNz4maOimuSYIyLVJJVczXsaTuGN2wdhoXUleH13GcKMmx1BK02hhD6UkJtLw4ECtAA==
Merkle root: 9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e
Merkle path: ["5f9cd1d289b94df2dae1fbc4142d42e596fc2c9e6cc7ec2f4c7fe35861e0a125","d8c9bc332f9ea65bd5afe14c7d49e15015d910fd73139722b1b9912fa8467d04","265f7fb22731fcef5462fed77b22ac031c3aae142140359cec18f5c54f8d29c8","f798a28ff59bd8c4427b28d2b8e95f00e213573304a492f5195ffa059f57fef3","f1eb77b4c61317ca3bde4fd7f93e621a7395beadf45bf5a8aae1683e59aa3c45","2a695fef18486a508981017f9d11f870ebbb2aeddb6cec513ba8de75e96a8aba","95e453cd6db582efd5b18c69179c938898c3a8ece84eac5949fbc4f851cac007","6709577dbc3441d30214e64de142d3449a40cec3b894e885cd626dccc8a0c01e","1d1280e32a31daf8185ece51b9ff153f26291f2f91613c31ad45ce205edb2bef","aa3c6fd517f2180904a789a43fd1be97921ef805909fdda62443e8d77b20b200","773a095bcbf93445d153fdeca960232c1a4bbd1bced66454901451165c999998","240ffdafbf866f8b77192a54c7124de153d6fa0f12969df359945a7f612fa6c0","eaefccb0e1aa85682b1d5eb0fdeac76007d7f9e97f87d680b9b26b421dc772f5","78e3a01c18db7a3aa85fa160432e1aa22e4b131e9c27c5e2e4566764a2ee13b9","deb69ba818cac6d60ad262ee5febe93ecfd14e4c978778af299f82ef8a69b934"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543154575 · entry 108e9186e8c5677a0eab…
Expected log hash: 0099eed9d12aa99aaa44ed875b87ffaf90c46527b61dfd92cdd4db2c148aef65 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":"v1787284115102","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","quote":"Sehr übersichtlich, keine unnötigen Spielereien.","rating":5,"review_date":"2026-08-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.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 (9ca8f1c1ad15…), 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.