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.

“Ich bin sehr zufrieden”

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 3126883925

Proof data

Record hash (SHA-256)

7fd294db9f5b61801bf58d8d4804c3277250ea51961c6c6443f3d8802a8f6054

Signature (Ed25519, base64)

iLB/40wtJrYeMITgdpggZxp38gc1b4mkHHxSZKEWfqvd0JywC//FBtIkP80TYYMljhlldiuCUa2fUskqFo44CQ==

Merkle root

0d7fec37eb7aa7ca022c461398d36283692153bdca7d5292b2302abb6878e5f6

Merkle path

["7fcc53d35b837d2c8425c02e36bb75f8f078b76bc1b86b9ab05873aa387a7d4f","ec068bd3db3c707384984a7ba8f45233a18163439ad8584dece9c9305b18deaa","2b10af1648fb4d8af83fc89791402f0febc363c45cc7b6712ccf68883512d80a","ede9059a8981f1837fdb80a0e5e325ff1b542a8d0f0a1a29927a6a1dfdeaf6e3","a3106681475875bcaac37ea1f30d6e98a75c56d9bc81d3c190397368488c814f","cc927ecc2afe77f9ba56a35680d16ad23304238b8e24028541bb513bc3b8ec6b","bb1c02c60d8491650d23d0a142df058960a2a102376bf89e7921560ec26510f7","542cbd297bee93af1f40b6a153946c9a64ea3a8cd085b00aa86ea244c00e77bc","deafc2fe4c4687acea0cda7c14e3515a38ab531a8fbb26ea3d937493be797a0d","b9c4a05cebd831a689caad21adc1279dfb70a26eb5b65efffa62df243e8e78fe","b68347873b0137d5d5b1cc886b90665dff74bf4276d22b56f987c4c7cadb1d9a","a082cf3de37099a52439ccdf30eae4091d1d682683c18ca8c758eceeeb0598ce","3add683131aa6f863b902521b1328fd8dfbfa46f41b648ed60d4b0fccbeb3aad","78493a36337086a989f7fe7acb90e0c5d108a90e56256076af924a0d68310165","8c6d73d3d8b42a55077d4061fe37663a0906972431ecb9eb374f1f8461206839"]

Anchored

2026-10-07

Public log entry

search.sigstore.dev, log index 3126883925 · entry 108e9186e8c5677a6678…

Expected log hash

7790667e260445bf729ea3061132c2116b163a0e0b944eca343c9e8408350ef6 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":"v1791359818972","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"Ich bin sehr zufrieden","rating":5,"review_date":"2026-09-24","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 (0d7fec37eb7a…), 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.