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.

“I have been a CEWE customer in Switzerland for years and wanted to order some passport photos, but after an hour I realized that it can only be done through this degraded app.”

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 2515439294

Proof data

Record hash (SHA-256)

04e7d5476d68d62392013cf27f5df7aa6ceec541e8d5781daf84ea20a17ba2a9

Signature (Ed25519, base64)

zhMtjM/KfM/UguBFo4oxXUOax5RKKAEHIOIed2GJ9o6BJ3T8+0yCJn+7ORRRw1tRXj8wK563gzDnibUP6/HPCQ==

Merkle root

8c6268a14330d1a3403c561e774645b0671f81571ec1735d4674ebe1de7502e8

Merkle path

["04e58a38fad599289105fa796bee2dbe62b6a40c70a9d816f7c6dbb3e4d8fe5f","0f4109055d8aea5dd8500cfda36bea599a97af56a19f9631ae9d7316f627b8cc","1bad9d8673c5505731cefc8f5b46c06906497c83bedeb1fee5a927445a895584","6d6bc8bcd856511baee7c983a29592f6364f43e470a36288038ecc67c01d0aae","0d413610638d4e4fb1adcfab8ea87b63a5f6d5f5b3e234ced01079f3f44aeaf6","6e6efb79eb9888100f374423844b8d488c85b47e578f71f2e818e1fe05791209","27ac51d16d232899a186bfa6f9e811297f3b704c7626eb1a59cb65eae5e116ba","ee1dc693a430a504a6ba6a584e6d6e8be44f2794038ae994729435ac47584958","e2f6e789327a643d404b6cecccdb57a1057e02019074f144b5015a5e7416a359","3d68eea6fb71c5ab5a6813553fc61ff7d3857bcdf01694dbc9ff399b30ca9c70","1cd305ce3ea1bfe7bb15a8c8744c8b0388c86379b11935e414bc5a89780ff6c0","7ef6ac7024634bd499c7b4000924d4521ea6f07a4fabf02115c6a5454f25c229","87aa107dfdf756911acc54672d2c33287c6855f38333ff4636b90748c8d70127","894fb50f273584bf006781fb08f5958320d3e5510a31da0d6339bcf63d847254","f548939ab1bb46e2c6638c372c3e2eef0d561ad18c63c15229fececc951e0b3f"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515439294 · entry 108e9186e8c5677a4f15…

Expected log hash

128701fddbb19410bf57cdb2d04d7a0278d13bcfda6410d76f176fa58341e1c9 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":"v1787141082461","kind":"published-quote","locale":"de","page":"brand:cewe","quote":"I have been a CEWE customer in Switzerland for years and wanted to order some passport photos, but after an hour I realized that it can only be done through this degraded app.","rating":1,"review_date":"2025-06-09","source":"Apple App Store","source_url":"https://apps.apple.com/ch/app/id6479752402?see-all=reviews","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 (8c6268a14330…), 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.