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.

“Die Bilder lassen sich nicht korrekt in die Karteikarten einfügen.”

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)

d76aac6bb5be362c1fb2fa2350f6ebf6ee8e23b06be46a45dea608acfa1a6a89

Signature (Ed25519, base64)

DVbTGNkHnrjbOZ4aUY2IpODoBmdYWm5/Q5Tkg9XM9ZtCIonnOmmKukmIfSUitay+Feesf2l1wG7s+dUDhJZ4Aw==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["d768885d0e25b4404f72fc27b01d6f95376762054aaf4b490eb4ceba9ee86854","4ed21c551544c7172f1a0a9f9276ecd9426207abed26b68d15a02c8fe2ddb66e","4a94bbe9fd55b4562cb1e33aee9463096f15b0650bc005be87d66395210a5120","7ffc65d26ac5c2ba3ef28cfbaa8ac798f61a28a279017dbcb1df6bcfbf2b7969","1c8a15e65f440698fc9cb9b83bd5087bfc871bfd7de84f9b4c5f43d91044f233","8eaec4c8436932e6b16fd017feeab15b23735047abff7de1914f849e9aaa5e03","834a37624a1cad4a1030f384bb6ef465d60e91c25d3d5b98e5a1acfffbe4fcef","0650ac19f48a115d9478889bc839cf80e2a981262c7f507d3c0ef1cd01bc7931","469bdbce264e34057e67be98bc535c774518089bdfccfb1aa8ae1dc48356c42b","634d2be91479ee364267edd428e0d4b767a395338df1611ad1dd6483bb792eff","8dd3545839055f7d4fd148a3c52b8f00591fec4cff65bda0b272f8625df59986","bf08a7b70abd12d7b26586897b736d1c0404f066aa427e277708a875f0cb6bcb","06f94171d32c86f72a9e1d984f2a7c3fa7bd9f00a98eabaa3fbd7d57db71aaf2","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]

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/fit/de","quote":"Die Bilder lassen sich nicht korrekt in die Karteikarten einfügen.","rating":3,"review_date":"2026-06-02","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.