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.

“der Button zum eigene Sachen hochladen nicht funktional”

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 2904877428

Proof data

Record hash (SHA-256)

5373634bd28e226431540bcb6098f8b113cedc8b2309a9edeb5c33f93f284a56

Signature (Ed25519, base64)

7wj4gRhwDSjLl2Htonb4kQaVxZB96GS2488SwLa/qULeBHh4GDWw9+Rvaym/HbHGv16VT6Do/+hoMyKEA1fZCA==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["53746bd004d0d49eb8bcf28d80fd467e3a388d725e8c8108b89862123fb6d00f","f946d7bd06d3eb7135ed6375781aa5f61ee713ce6efa58a6ec96cfac40948955","52725bb78d6ff9accf036e60baecaa4c996d06a9270f539933bbcbd1e482d28a","b729172fe63cacaef361db8c8ba396b3a4a82838a9d9547b59d78ee0117176f6","0a32572f84d5a81adb5acaec2ad4df3bce7b31a5152aa6bc1bb785952e4e2b72","8386418096fd48e19794dc176a98c1bb2188c5640beead3bb13f9efacd94f79e","b429d6a6b4bab07cbd3f036556878f796b6feee74acb24658eb1e1e082c079b9","0e6352e2e7f1e5e0ee847a6a66bc09576b48276740f07a80feb858e8b1147a04","d1fbaa7a96bbe87e3ce35325d163aedf8b475f641bc9675f1a750a585af4cfe5","36b43838d83532d6dd22c9128224527797507b9d3f8aa286d95efafbc0b0e80d","b30b5bd263d48586ebd97cf3cd7e0d28b99e3f55621cd3d4efb024958f812b61","44c08976ee58b5cb058f11ca9229b8780c4a6cf8c64bbcf43373011c4a37225b","ac995c9ae640659c6b258d62d0cad1933912ca122fd33d27f90560dfd3199a84","aa4bbeb87247c2797626ab02a549451da6dfce4dcb854a36fdcc601e3e788772","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]

Anchored

2026-09-21

Public log entry

search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…

Expected log hash

d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:vaia/ordering/de","quote":"der Button zum eigene Sachen hochladen nicht funktional","rating":1,"review_date":"2026-07-30","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 (e299bf38720a…), 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.