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.

“Diese Software funktioniert sehr gut.”

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 3140475820

Proof data

Record hash (SHA-256)

a8e2ea4dee2bfa64dbdfbe29c86a87852fad1aac5b25451d52a298bb6b3e9806

Signature (Ed25519, base64)

t82CfK25RigcLRcw17PZa+Axtm1ccGncJaQGUOrtWC2ulkEx5kGo03af4/eXOYIlTTp1qLFM81nx8mxW+njNBA==

Merkle root

52d6be1abed15ebd0724a0e1a493d5805e1ea49ddcaf8e9e5584928cd3e4d759

Merkle path

["a8e1d650c23791c88f4b38b939d1570d798723b5a7375ca98b5b4bf1bf272339","3e3d320497390076e4699bb453d00b7182f485f973cf17c123d1733602d50bec","14b89e05a22b225957235121580894c8d0afe5686f00219114115213485444e6","fd2014c09a71b0ffa8a837e2dd5bcf6ca66c996d3bf038359356d56e6470b501","5ef04697ae425c40961089382465c7731b28d4f93fdb1a9587fc3a6bcee46cf4","c7b75e4c7ce28924eb6e537a441516e9d52be6511add8e4d0e212b45b65e7a00","fbd89bb132e88f6a95a2e43614ce56dace7fb65e8139afa6c7aaca830001f67f","4adef52dd7e24ef429a43d518b47aa91d3287184105868247c7e98075ff78d11","aceffd8300c27be7ed82b2c0583df8371ca1eb51d065951d9f1405d9e3b7a9cf","7ec66241c535203bb7386fc32799b761b4b96b2f428ca95310c8d062f815ae97","f346844c5eeaf68f02eaf08f291e1a8c316d713d59000253bf10f3ed29a2d486","b4ed973d9a81bec59cc60993fb375b77fb1ccf8e1ee07b38824b8dfc57c9e6b1","791a0e00ba2c4e0abbb082fb7aa9212ebed8a2631a8fff481de7bed24862693e","64b3ccbf7465086dd7db73066d917eee6e4789a39addca1cf1c9d0e38a1ff084","b72fcc24171828b3fdfff6be65bb433d37b8e51a187739d27a216a784d84cf36"]

Anchored

2026-10-08

Public log entry

search.sigstore.dev, log index 3140475820 · entry 108e9186e8c5677a78c2…

Expected log hash

bb68bef30792bf00f645df162a48943f770bc3f026216a44dedb4651c8ac0917 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":"v1791431489246","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"Diese Software funktioniert sehr gut.","rating":5,"review_date":"2025-06-12","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 (52d6be1abed1…), 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.