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.

“Super App, praktisch, nützlich und einfach zu bedienen.”
Google Play · 5/5 · 2026-03-06

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 3198225546

Proof data

Record hash (SHA-256): 41b2b8032fbd694fc364796246f56d8f4750f54f887f3956b7794ed007afcbd3
Signature (Ed25519, base64): i6j3yPxjDikH1j/fXBHtjAshc3wFhBniydWRDowfpll9dT1IrruKnV4AcRgBFtopX6akLPPsd6SAZj3tKsQIBA==
Merkle root: 12764493a64961d0e0d426bbec64b837c2e35bc22a58920afcc56db07df6e8c9
Merkle path: ["41b1eb7b933f7caed131525ba12e89e48117aaa794cedf4c42be8306cbd75fb8","483f395eaa00690dacc504163041679d06762e0e6db44c68afcd9775a9284ba9","694403d58b5cd53707021b55d9f39f6751b96c6430e541c84a9c423fc09326ed","15edf8b013bb3b9b40c8d8cf1d1b47952bcfdbcf45dcdcb0bbe156fca7cdd18d","cf5aa6e68d8a7423c810a0c85a4f19f3c3d3d162b950cf0be1f7398953f3d4cd","2673dd0e1cc41a093eecb79e707af22a92f720522b797200ca2a5be75dd9870c","e87d3470a6a23c0e7a72519406df2e0d28ac58e31cbd6ee59d3a26e34759841d","0fccb998593c8f1be39a793e349ce43d08003514430bbf008acf4039c28d32de","ba68d40fc84e3f7915c06e01b06c1674f51c19ffb80915fa60208b3a24fa2e22","8618805f46975f33a7b6b1f0cc662e5e7456777e73da1494d677103a60b649c2","bc3cb2933714b12bc7eeec18228156d857cf40e24ca1251b33bd7759c6b49da0","cb60c983334a0a783c3451d8a568d777b700e15522ac276537e889caa604231b","0a6744044d43ce91eeece8e7a40b34c6faf131deafcec67ce79a193702d62650","bf01790763bd70681430a2841b8504c59b88918b5b88c9d70f6ee7041d7ca6c8"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198225546 · entry 108e9186e8c5677a10cb…
Expected log hash: a11b46fc63b94f32c49058752856fbdc4e92f7a41d4e67238e3563657fcd50e4 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":"v1791685609571","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"Super App, praktisch, nützlich und einfach zu bedienen.","rating":5,"review_date":"2026-03-06","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 (12764493a649…), 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.