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.

“Allerdings wäre es hilfreicher, wenn einem nicht angezeigt wird wie viele richtige Antworten es gibt.”

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 3140627354

Proof data

Record hash (SHA-256)

ab647b1183300e963f0e771389bf41c787707eaf712d3822d6abe434ca6189c0

Signature (Ed25519, base64)

FuO9AJwPGJhcMun6Z5Mst60nw0lirVdieQsDF0wNsHXcODZkWT8xvcGaydniV4dFhz6qH07pafvDu/NlJSTuAw==

Merkle root

7e5597bd3c162c8b6d828ec7450367f642ce11ee386de414b88376dcbb621ae5

Merkle path

["ab63e32ae53eda428bc2eb71763154105fb5fa8610cb36daa79e8206357af39d","4c88a6f19ce86dd9b513048945de3c4425d3d26b3562aff233119359c82cfe85","9a0fe56b40cabbe849eb935b0785038bbe816bfd2329a08b6d5db9e7dc13253a","42d18444786f6693c011f60c1751dc11d377490351bb95225be7d3f8e2d7ea5f","4e34680b88b7d0b3ecbbad6b5a3057890af677c15013c720250d6dab66dbf4f4","4762fff5a4c844471f208db6c9db0d09c03fc1f6b11addb04eecdc49aa0f0958","47ba7578ca51236e4d73aadd29b90ac32576f4a8133ffb7b7c9608c9764f2f33","2781a91250ea2877b2f6d4eef844c4afbfb44468de1412e905f239db989944b5","930f33fabc78642091077b540a62f11b771b50c101882b42499af8397b1a9aad","f1df85af4d456cc7ee3b503c666941de8ed071bb07a83aaf11ab3d9bfc24a8e3","1b65de0280233b20516c2ebd39f83bba0da341b821752a43184922c938f907fe","034b9694ca21b9a5a8e3086d900c04f27c0cd73c76e0604f9b440f3a887b0a63","bfd78085aca2bfeaad696f75d7eaa469b1bf2e4cc1358a035d02f82fa7863412","5fc193f72843e5ae060e028dd49b5ed7a5ae6baed3b43902a359628ad39c7321","76edfaff3d5907039be8c493f114c2f6ba10fbab7705dc7ab77a269ec79893bc"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140627354 · entry 108e9186e8c5677acc98…

Expected log hash

82c9bd063e624267c60865e2416c3d714724e2c3b18c4773424cdf17232dd6f1 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":"v1791432333296","kind":"published-quote","locale":"de","page":"theme:vaia/communication/de","quote":"Allerdings wäre es hilfreicher, wenn einem nicht angezeigt wird wie viele richtige Antworten es gibt.","rating":4,"review_date":"2026-07-22","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 (7e5597bd3c16…), 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.