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.

“Es ist super einfach zu bedienen.”

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 3273053873

Proof data

Record hash (SHA-256)

1ff0933269e0095b522905c70303a8a11fca81a1738799ba29aceb324cb99288

Signature (Ed25519, base64)

xyC9cwKbB+CCrvfxjOstT0s5Q+6ZO19byJ4UlJQ0NodaSUdcRU0qFzFzzrSrVSyOGjm92vzftysuSlrF2w0YCQ==

Merkle root

6953a5ba9bd00082fa1986982a5979aa7ad5b4654ec368f8d247f13243e4e4b8

Merkle path

["1feb6e5797becc5cc50e07130bada030aebeab8a9c8380df2697687d439370d8","09a24ff12cfcde6ece952faab71e701d2bbb6f09f80158528de10d305dcfcba2","c1c92d1610177fdcec86355e7442f7bb29794e6cb8a1d84d8ff4c73edb9b6ae8","d6d226548019e86fbdb9cf96a99651e5d96c943e93752321bbfb01e39fa77e22","99c9e9288a4d76096d1cbbd66444df6ec4bc311c8732c24358eec6283fbe2520","20565f7c751595db7d2a01691ac51df3f14f2242b2b82bd52786bf3e6147b7ba","94ac6218b4e36b0e61699a1be3e7d252a6af53f1a131c69ba14a94776009d1be","6b84cbb76ff622553681a1c6d488a6b12e88f88bfe631baec9ce156873d62c5d","2dbf58cbdffb51b4421e9848984e02c146b6e2793a9fab8650733100f75bb9b9","2a71346b3a82e076204ff0c3c2f36e8da558e58a6b123c9b1bdbabf5ee3e8ab6","72c3e38739481bd0a6b962b9809fc41fdc415b4ea8f89001926f0ebf61efd9d2","d42dc1b37546fc67d932c54c8efa2ed4184ceb43d115311d414f7b177c48c420","3d6624c631c3f201b337a52bc4f9494c99366c0aa74b4db152cef1b6807b4800","98a14e6f55278d0c3f64d31e6bb09545a033fdb7dd6455363be23426eb85b044"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3273053873 · entry 108e9186e8c5677adb5c…

Expected log hash

8e660c0f9c2f4acb2461077e20036379bc945573437a296969373758a8dbffb8 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":"v1792120102008","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"Es ist super einfach zu bedienen.","rating":5,"review_date":"2026-04-05","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (6953a5ba9bd0…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.