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.

“einfach und 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 2893887498

Proof data

Record hash (SHA-256)

c861ed4cad5ca424e473fa4e0872e28c003ce3d17bf7bed3b5cf34b5048bccf7

Signature (Ed25519, base64)

aqp7jqwnd53ZeQ6yMlNIeKDBWgzPrkjd8KCoAAyPv0Xei7epRtdJI+5vPVF7ptKFSQYU3vsEvP6+pbqH0j//BQ==

Merkle root

2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88

Merkle path

["c862c2c534969ddd236d61c3c92ed1fee28e904ec51db9215e1b41ee6c074cc7","6de25f71b04b39da5f0e5b4aafe6106d559129e740a130960a9b9c14c7ab2795","7cd4c3f6bb891fefb7fc14956a170a4a6f916208629337e91e3e6fd79c83b67c","4316e6ffc3709ba6d44f3366dafeb196bdf0b461a99e9de4728155ef8be8511b","c22b6c03c1abd8befe0a6d768b993749477931c0ac8fe9e4111a7f1d937ed6f7","4fe98d8a7d6b7ecf589f6a2d212dc8414ad3f0087d68840137f8f3cc152695ba","cc75c292406f5760730e9e73727406cef04bab3cb2812041300afbc805eac6c9","8b07db7153f2f9c8352c615eb04efbc1d45d04a8220fa50c813ce67ab3f1aacb","a40d0354adce762c746b7f076e860d258c44a27e2e0d389f48185db736c40bdd","2b93dc9afaa7aca4c6acd55f9bf499d5123bb1a9564daf9e92793a1be819fbea","5ea62ab057d579ca15648207478bc4df778c9ea94e2cbab7b35eb1dae1e3d5ef","38376ec9f35bcd39f5035c8425fc104742746cec8f0f18f678e6ec2b7c8970cb","f798c0971d32a6ae8da39cbfdd643aa26fcc32dd200aa7f9151048a02f8ece59","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":"einfach und funktional","rating":5,"review_date":"2026-09-09","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.