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.

“das Backend kann nur einzelne pdfs verarbeiten”

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 2893887498

Proof data

Record hash (SHA-256)

9a93a923cd4fa3e88a2823e1c96c6f1419f6c620481ffe8e8853e5aad7b4499a

Signature (Ed25519, base64)

7qZpgCQtXr0KgCMUWAXOg+6jfkXjm4IuQ4UE4/IWkb6elGen1KYdfMNL9A28mAW6i6Kg9nRBIE6nbjpTDkY9AA==

Merkle root

2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88

Merkle path

["9a945293ba4aad5073edc53b3bb2ca9a889a753b3827a2ed041229141ea8733b","cffb97a64409be426a429f6a565c745ad1b61c410788b90858d440c28604af14","88dee98f02a4b69895686907a20aad140f14730e4fcd1c18ef2dab24d921e387","ff075630e6773de717daf1252e4b3f6e1c165b49159cbaa060a689b69c941459","f99555ae1103ee4c4123d420257526764f0773a77fb7b45a5073fc6123c3a42c","8eb9ddf06ec69b4747beb72067dbb0f2d46cadda43825c3a82d2d9ec76553f72","d81777bf81cc8a0806018807cd65f2a2f37d8ca73d172671542d8e90208d9137","69520133faa6501b7ab71c85dd310cf709b6c156a1212981de7e4fbf0f388d7d","b9f30ec44196718f2cf9381d445d6569eed3b11c132789777c3989fefb86c56a","97b3ef7abcefcf268bc0e823543c8f45b95ea7b956ec024d31884bcca1a921ba","6900195e4203d1c8cd26c13eff44866a664af0e306b06dc11a266a9357e24fbe","c22fe83bd144008efb96895e17f4e6f8919a56dd8220cca85f3aa44cd67de0ee","27978d996981aec54e7305bc9bddff422c8ed02487f8eaef12f84d0b2ba90b9f","537f00dd60bfbd8c049786f7eae4da8a735af5b60dacd3bc1b6054b8ac3175e3","58a3dfc9ad8696e92f5fc9960e9c6bc4cc04e270091b574a948593298b33d1f5"]

Anchored

2026-09-20

Public log entry

search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…

Expected log hash

90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"de","page":"theme:concordia/quality/de","quote":"das Backend kann nur einzelne pdfs verarbeiten","rating":3,"review_date":"2026-07-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (2f068f3de56b…), 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.