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 2525257308

Proof data

Record hash (SHA-256)

0f93e7c51dfc9a2d00d92c7b20e449367a67806af5c8d020d7eaa5b416155376

Signature (Ed25519, base64)

PYX9pnU/lrTjifqLMKlx2sefS7clLVYfsCRZvqj7cZP3zhyL1VpSyE43tVLChhVkAnuPmdheEc7nexWtNviQDw==

Merkle root

bdf558524b6fc08556728f259e0f09161d4626349b700d7f30fb50b05a626ea1

Merkle path

["0f953d0909bed3defc153d5b0b613582cd4df4b099454598d705b7bc10544033","b994f750729ac72c8e7576e80fd6d51bbeda21109a27b2fb7f488a80e2e64737","40ca6bd31a5ba26a11ba0b741625903673c9a9a18613bb327fc1e19385c9f447","bca282845ce02c306b0fbdae101b6bd4202afa9cb04b99f497a3278ce438e523","8825ba5356173edbf04434b1dcc1c2ecee52b376e75fed0b0b061eeb80c16a1d","1343838ff31de14ed1998a8510a709bc96218ede3e9a472756cb32efe4820b32","1e28a42a21164bc4875e900092630caf1cf24ffbff60bda4a4cebed15609fde2","5cea9abe32a4184e73028dc61b9b61acf047fcb21966382c281918ac94fb9a7b","9d0a11a8f4d27164b1733d40a939fcfae1689c9589f3fc1734cbca4a2be54b58","a1e7af98da1c5ae0a47ade8140955f838cb6022e9bfad74b9fd845d7a4b7ef53","0e1bd3a6ee82ef3f4bd32cc3cb21911dffafe5a3b1f5705025c94551b91e7ee0","6ff816fac4e7f13f31377b74cf43f5943e0f56e713621e1d3de9eec0611ec5aa","3e4c67110315d61166cdf761e41e4fe4e4d0452a654b99f3d445b9ce5a2ddb8a","272c20c9aa4ca1732f6bbe1fe35bf6daba5432c22350d19d21e0e6203fa6e857","7c1f9829e354481f51c5a693ce64e17eb8bee61cee659bdf8b794fb330eb29d9"]

Anchored

2026-08-20

Public log entry

search.sigstore.dev, log index 2525257308 · entry 108e9186e8c5677ae552…

Expected log hash

c7cb1a1a9418331323cc64d3f101e644ce5e79412d6e55a22a9342e33025b7dc 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":"v1787195935480","kind":"published-quote","locale":"en","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 (bdf558524b6f…), 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.