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.

“Zusätzlich muss jedes Mal sehr lange nach dem Editor gesucht werden.”

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)

a4ea739724df4beaab6e6124bd6dd23f616ea43c8aaeda19e3cee578ec9d9763

Signature (Ed25519, base64)

tzW6Im5zS7rFl0ka7aV7998UiQvZJQmg6nlpXlO37V/BOifgvftJ9J1R1nbYCmJEsTa2un9UyOBxJC4JxpzGCg==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["a4eabe8c739149638ad14eb9b7f54747699ea2905621284ffb47d627343a17f4","a9151a450465acb507b264c896cac4d426e818861ac7a59f72e0d46524fb8033","f9d3a5390cdf0b04f357ab875b00ffacd605d3bf9c2ed9eab73bf9051aac0281","89f857221243c250f6f5c199350d41144227d4bd3cd9718d36c16c050014a7df","c6170d217659a7a77782de6b8a4f041bdaa74813e2478ddd37ba2a0d8b5f4b07","621708ef5cb1b8835d365b65cbcb15565b77f9d68ebe7925770c95321f288b28","f33b96f72c9445d3ed2c4a2f06af42eb6f45a4b3e1820a3f6f587e31ce876059","ecfaedaf360ad0f39a48a8bc7ab0f14985f659f4d7256dc12720ffa146fb4d46","09aa0f35998b8c4cb22147bc9c769b849f8303b975260526c04ad95f9d6680f3","41c658ab6215f896fdfdb5c2b0a3c9f122e6266a3d5c682615b43ffbf9e5e460","a6ecc7945e06bac9cf0f38375c8d85385377d79041dc0f17aa06822dd5084a69","6c2612f525e9372e44b0deeb0737e4e68d621df2f62b7144b07119251a9b517c","b5d03b72964f911025dbd61c2eea673598b47768b7619e9a279966a44a138147","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/ordering/de","quote":"Zusätzlich muss jedes Mal sehr lange nach dem Editor gesucht werden.","rating":3,"review_date":"2026-07-13","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.