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.

“The Metrohm potentiometric titrator is convenient, efficient, and provides accurate results.”

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 3258071454

Proof data

Record hash (SHA-256)

3466c847800c7b203400e2dead5705a802ca6f76cc46a3b8a06a3b6dde89870b

Signature (Ed25519, base64)

0jm6owezDfoYVwG/l7748XaAyRZwnDxHJSDUaVRv9CMNnvFUn0PFiweRXITyVntz+aOb0KcsXqZpvG8fuyz8Cg==

Merkle root

3286418fc06d25de584969d1d1d5f4b079918bf6b5a5178364cae8b78bb351b2

Merkle path

["345eb758765e59e4f5baccccbe7d207bfd9fa38e81fe0ba51eeef5eca5dae263","79a715bc95a0b4fd051a9ad42528a10c7f77c7693c2f010aaa81dc641eecc93d","5bcf0435d750ec0224e2ba90bcc5035d2278f88c1133790a142b26dccb5571f6","2ea31c867a72aed26b45f84a72d2a944ca1814b4d0e3e8d3b7315a3ce4f871dc","bad25c3825ecf9a671a816e52930418fa479a1920d789d3a777b5209123bc86e","97dbe68cf262633a8d12e6153ba9283ce96eb626e51baaa4287021b451193800","ce2a6f0b7c82f0835883587808b375750e3fc0f99e2fc3b139340e14123ba857","f929a11d0cb1fea8e9c5a9e7e4c0525f87568a7b62513e0c378feb2319b20960","f2a6ba00e99637ed8d519cadbce1488aaf06289694223b5682de68d6f35f7a33","70703bc896f8d3850896304d915e4569aab5082e9e5cfd8015a47a1a4eff58a8","fbf0beecd3644a0b1ed85afe1d822ac72eb6c6fefbbb832dbc0449418be397e1","18f743e4293ac0f418bd2370e18523fb86a3c1df20723b156051657b751cdb54","d9800b1b87d047478eeb89f8a1dda19593d3b273c40fa6d591a1b944763f5e83","b4d8773b8032d1dec9dc6fa4ba1d52baf4d9efac6a7cb542ab0617b855dc5284"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258071454 · entry 108e9186e8c5677ae2ee…

Expected log hash

f9026b3bdc4a2e986a01140b2370b0ce9ec3e7c9353055dd7c9909c6a9941809 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":"v1792030101458","kind":"published-quote","locale":"en","page":"brand:metrohm","quote":"The Metrohm potentiometric titrator is convenient, efficient, and provides accurate results.","rating":5,"review_date":"2025-12-10","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 (3286418fc06d…), 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.