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.

“Very good service and very nice customer service”

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 3199295725

Proof data

Record hash (SHA-256)

2b0437a5c1b3880f7e1ed65c027dcdf77ac5cc519549edf72cdc8f9da5dd241a

Signature (Ed25519, base64)

8Ie8Oe6ok+kCUXbTh+3eu0biSINJuHTwUPa15pcyaJ0z9RAQa2HgN7MFxe3zLl5Rwq7WXi8AkjBoiqh/KupDDA==

Merkle root

cb5472fa7b7f10b7453a4f782a38c5dbb3d782ac291369ed3830c2ab783a230e

Merkle path

["2afde2978af362371f890d2f143927813e03ce558f5e4ec8f819bbd7a15ac01c","4bbd9d75bd692b64e040be0a27f3eb1c424e3c38559624775341b36ed995135c","6dc4d30501372a4099e487f34a028d0619127652d8d92074a4dd1f785dc8a851","2e29e889b94ff1166c16cd2a75b9e4786b4953687d5fbc67f5075e5720106a32","a7d9d12460a53e7bda48d1de463c8851050872d6cd4399421a48441c381e4c7c","f2864ad3d4e1189e7b6dab059a9662a88958de752710ca52021d71b2733d78c7","acd186b2f26874dcfdf35684f297448ee0447c9811c684d0ca6830337926df90","65990d42efea93ff102e3bdbccda77591928bee19c13fd7133f655a03e3d910b","725ea9594061d83391cdbf107665eb1e64e177ac9fc8ac24ad7a47d42be93e63","1c02cdaf205daaf1e303ef8778be3bf8b57cce761d41760ae7c7c83f3720843f","32605f99e97a9c27d880ee9461d5ecb5547e8e9e8b680833e4a8020a3d62fc6b","6b52b30eaf5b97885456e54aaa839ef0900f8bfbb260e6f22cb33aec9a4c66c6","67ef19118472e8cea8d8f9c7960df416625b46d91fef63f2cb0306cda5833746","6ab0f07aea38f551fb6ed4456f21bf7c468ab54859dff87b6772a51601755f64"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199295725 · entry 108e9186e8c5677a3fc5…

Expected log hash

59b8cd8284c909c35d85f443b6a086d482f8b667c56ec942d663937a75e25638 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":"v1791689736846","kind":"published-quote","locale":"de","page":"brand:sumup","quote":"Very good service and very nice customer service","rating":5,"review_date":"2026-10-07","source":"Trustpilot","source_url":"https://www.trustpilot.com/reviews/6ac572250a4e950ad6905694","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 (cb5472fa7b7f…), 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.