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 habe dieses Kit seit drei Jahren in unserem Labor und es ist sehr praktisch und benutzerfreundlich.”

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 2621780523

Proof data

Record hash (SHA-256)

ffdf1056f412e23c687735f8421b4eeaac0b32e4c9b1aee73f78c2d14014d280

Signature (Ed25519, base64)

zvK5/6dR2VNPEPzp4psOj8rBTJP74NTxDk001qy+8PUDxo9WPAsBE89mQsaW6HOCsvV/b6rMjmmL4TV5QXxHCQ==

Merkle root

7b426d9a8e4778c60509753003c7b551184ce3f76e1db9b678c604656c147d81

Merkle path

["ffe76f91a91d9e2cc6e6401c29eb1e31e279d5d46cdbf7dc3b177a1d6a220301","6d5273d97e7a9cf00d500ab04b4d7a38002d83a2b80608c1e7f9ef2646c8adee","93556776a5281f7709d2af820da07ae4d75589d2d128e4a181ed3e5b9aab3b1f","939ff3c314272845bb9887973e24cc30101b9dfb744904d483f0025923e9699d","e45bce5515a210fe1a5d304982d0aca5278eec8cc2f09b2848587af326747333","44ddb47bf1a2f4d4cc472c824007a6ea9cccaa972ddfaed3240933d81dbb029b","2bc35b1049d948bbc2029216627a63bb3f2b2b74c4c93e3380a02f553e0bfd5c","c242814aedd5cca551771a6c020f2d0f013f6dfc284d9e691f10815eaa596eb5","592dba3a944f7cab6cc1ce50bc9d1f9103ec6ade086e80d471077ead0a764463","5cfd3f01cfc088b9ce004c6cc4dda4490d6ee2e150a101125197cdd0e0e5936f"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621780523 · entry 108e9186e8c5677a0666…

Expected log hash

8cedab57a40119bdaca7f2b5c6cf9bb1e2c3e69dc6a6b7339d16a6592c70750e 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":"v1787891923870","kind":"published-quote","locale":"de","page":"theme:metrohm/durability/de","quote":"Ich habe dieses Kit seit drei Jahren in unserem Labor und es ist sehr praktisch und benutzerfreundlich.","rating":5,"review_date":"2024-12-11","source":"SelectScience","source_url":"https://www.selectscience.net/product/omnis#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 (7b426d9a8e47…), 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.