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.

“Einfach zu bedienen, zuverlässig und liefert konstant genaue Messergebnisse.”

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 2621505474

Proof data

Record hash (SHA-256)

fa73b4158cca31c883003434c77704e4c02d0b97d42d0bb85d562afcb3cff9b6

Signature (Ed25519, base64)

VFquXSZq0BQZwsYXVIsvE3l+voxH5oB4aj4uV0VG8AYyh1F4psaXJEUvnLcjUhGLGnODNmRpB4E34TM5jJFMCg==

Merkle root

d07487a7d8598747d5b143d9a16722ca7a83f5bd36bc79d5bf9130c2672dae41

Merkle path

["fa72b975542111df85a89ef01b7395c14ef32297333e524c1d4a0cbdd96fd253","98cbe8755e5b0cac633e61f78acd3ca0b50d6c7c22d9c978ec35a56ef1b01310","8e3e0a6c2ea1b648c63637035d4cd2e6b6f4ba0cd25d67c881edf67a08030f81","eb207f39ad4a06501678dc21137d33f206338b0bb2944a16d64e898486cb569b","aaf057fef2801bbd02741cfec3fcdd8f153a2a7f3358848ec113fafe42bf88e5","8d2fa27362c9ff160ac2d25d6df2677dd045396b4765f56146ec4d76da279581","7f6b9dec69bc2e16b90b2e6fbbf93fddddb72204bf82d91b366f8e750680144d","16c40f7da94858168d97fa2d2f17be39d3083459c3fe8ecd79cb5ad2247ff51e","da93b3b77ea31949955c821c079024791a83d99a625b39278c4dadafd474dff8","1a0e13f64d2ef112e6784cecd1b72bcf9f381bb8621c81e63508dd0a8757f171","4e8d95f62a69347c6c92d5b980f86d147c9dc25a77b90796878554cdf7fea168","71d4432f6dfbbd6087e625fa3b7f76dc80c65a8130ebc60ebb85d94158176662","8b493634c5f80ca26f55160c398064560cb8d0eb1dbc3d1272d6851dfd141a81"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621505474 · entry 108e9186e8c5677a1258…

Expected log hash

7fc4ddca6f65b68d7bb8897b96188547f56c1ba672ff212c685cdf4bf7438da9 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":"v1787887633012","kind":"published-quote","locale":"de","page":"theme:metrohm/quality/de","quote":"Einfach zu bedienen, zuverlässig und liefert konstant genaue Messergebnisse.","rating":5,"review_date":"2026-03-25","source":"SelectScience","source_url":"https://www.selectscience.net/product/901-titrando-for-karl-fischer-titration#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 (d07487a7d859…), 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.