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.

“Sie erklärt mir alles und hilft mir sowohl beim Auswendiglernen als auch beim Verstehen.”
Google Play · 5/5 · 2026-08-20

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 3240422411

Proof data

Record hash (SHA-256): 496f4ca06aee8348f5e05d4ea95b1f0008119bd38a13e2209e17ec00fb46d550
Signature (Ed25519, base64): Ym7O/1fEVBZOeHiEgodhc6KSPBGvl9ZxNCE0aDSHXueZ6ofLdT1veCwDZIIu9P1cU/pjQKXfjLuUFh3Kbpp1CQ==
Merkle root: 825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9
Merkle path: ["496da3b3471beee9ea757437dff585550e66372b76598422c74f9e490f71a192","6fc6cdf016b2a5ba7c425cc0eb69c351e53c581381f12987b89af9415fe4cc59","087a5eb7ffaaaeeac5a6e59096d118736ec0a435ca35e0742f376430992530cf","f151d75d2eb1c87c9c43887fd34d90293a69a95786bf257aca3bca8d47727336","5f590f55258ad2ebb598ba5003c04b10e4426092648077fee4b209be1dd97e37","016d125fd9a1631e13482b4fc278e34adf1654cd8639e9877a51071eb230b8f3","1b711a9d264ea9290e148af5e6d0539db7b3d80f1670de5a34f867834b0cc3fb","6d216d9b3cb0b086d7ccf38390d538d279e64ae69928f787f3b21141854911fc","618b43e049a567a7d6f48d4f4665bbe9f68fc2c54ca6138c03222a7b251c226f","f819d222e3c138cacb2d21befb04495849ab9f599ca63493ce4e7385dc8a1b87","c8b7d8e613e305123bcaa9af1ed1a7d0c72af972c727013e1367bc0e5df8173c","0526b5b7adf235fca820e27d7e9bb58328407474fe694c840500fecede0e4f46","1e2e9420d8c4747dca96dc342727525f4c47cf2390ef42ad69829fe37156235c","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…
Expected log hash: 8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"Sie erklärt mir alles und hilft mir sowohl beim Auswendiglernen als auch beim Verstehen.","rating":5,"review_date":"2026-08-20","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 (825dbc6ca55f…), 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.