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 3240422411

Proof data

Record hash (SHA-256)

8e010111027b5989bc9d4cc3fa6165810a0ea3112aacbdbb82d2dbc5e5d1c167

Signature (Ed25519, base64)

6/aPYTkCYas0NBZ2eichsGUlIt3/pL7kja/ZzWKo8E+ZVVqU1cS3oox8ATrll/ULc3Uq4w3Ig4YxvxcKqkKMDA==

Merkle root

825dbc6ca55f00c6c81d8de0f7a080bad31b79dfa0e721dee7ded0e9c294ebb9

Merkle path

["8dffa8ca32c34ee7f27bbbcdf425ad1425b47c0ef6dc4c5057178011b1fc8743","d9f31d07a57af8d8892f5811b44b46c79c2f6abef9980fca26f18b477393edd9","0a4daecfb43d3e1d7a8e1e06b338ce3e965726ff6dfd8e06e003954f66882c40","a66f52ef163b1371b5d3d3ca5377a54c0faa796627bf04767af6e0b6eea9053f","388eee91bb87d35e05febbcab3487ad77d703f2543d34eb96447d5e12190e1b0","21e297189b244f3220d8727b5e0d82efcef694b70d05ba6f7d16fa4ddbae73f9","8861ed9683ddb2e4344dfb20b2836b6294ff0efb6047efd16c1b51772a4a1070","f7e9523c4db80675d6a47b203fedc041e807e1d5e4cdcf468458ccbe8fe96e9e","de816d16a46a76aab99e183afae53827b72dcb0cb93e06dd6f685c4ace718d04","ac24d270fb1df121b660b7b5f74a323076b9fdf407df4791a4604368bfbed763","67b11e84a43c626355d24e3138e9b6f16df53da226422778c6704763e472e120","0470c0350267eb865fb293d11b365990524150f4ecf392ce78f52a8bda5fe32c","30ceb990dbcf69c7449b46a359a0167ed6280c6b62f1ee6cb61f71251c1e9d82","04c4bd8a9ef95bf5648c9d023612bd1f2446e83a6dcf83e612d031a5ea30e90c"]

Anchored

2026-10-13

Public log entry

search.sigstore.dev, log index 3240422411 · entry 108e9186e8c5677a0ea4…

Expected log hash

8667b0db28913263098c19cb6387cf64b6d68b1b8f2c4242d3139d96cef5da0d 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":"v1791861703078","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 (825dbc6ca55f…), 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.