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.

“The app works”

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 3666748782

Proof data

Record hash (SHA-256)

63eeb9c14b71be85947a9745d931ab2da06746e91b095be86846136fd8d016cc

Signature (Ed25519, base64)

MGeexaoVXZRk1yNkReqWCYpsXyC+hLE4HNieIwZkYacrF9IyyhUe7Gj7nm3HWW0zNcB4O5s5Lf72m0utJWH4Cw==

Merkle root

9f3bf01edb9d597e26c01d8c9281f8ebd9083c8348fa27bf99e2d3d27a8b9c8c

Merkle path

["63f0e472298c2ed906699159da13610116b589b8580fa4cc58c324f558553926","d1cd0bd2b1c4c93c4ecc3de3707caae251696e3bfc6e2a2ac75ac928a5917d2e","742f9351ac8dcbd61a8f954781fb31c0aac08437c65bd1654e1d312365852aa5","5aec9150fcec832376619033a762c52811b2a8b9c68e1e2c1cfc51f41bc8c6ab","ba1d8e41fb50f43a2a6ceec9bce3117cda3b0cf34f8ef23cf2458a927207ac72","1b2856fa2666432f98a4108b51eeeb108a213bb116446da1bbf63c9188fea2d7","0213af2e1acdce2403ff3eb9f3c7e65d1c33394165a494e9ce2a12ce0c14b9a9","099e6c14fba4e511a6524bc27b8e2d31a6a7534d8b85686a912244594edf84ba","e44be0c234dd6cc0b658d2ccf3003bb5fe79ef3a2ef0aa17205481ad15663662","3f429a9fd6b554618380332c2ba65699c482e1e4f86db7334c719a9c909f85ae","da86a07f825c8a0d395cf7a058d65c2f29dff6598c8e028c844a53586ffbf3c6","4332b2fae13a0202cadefb48ceac1f7e0148657bb8e80e178aa26837cf936fe7","ccd3f6a502c459e3bafdbecf5a4380782b0a6666d918776f3c595a5cb05f3e9d"]

Anchored

2026-11-03

Public log entry

search.sigstore.dev, log index 3666748782 · entry 108e9186e8c5677aefa5…

Expected log hash

5b49e28274358602b99f52ab121ad302428fe63b23ca19ecf9d795208846c99b 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":"v1793702050700","kind":"published-quote","locale":"en","page":"brand:concordia","quote":"The app works","rating":4,"review_date":"2026-04-13","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 (9f3bf01edb9d…), 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.