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.

“Metrohm products are a pleasure to use and a reliable purchase.”

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 2621946731

Proof data

Record hash (SHA-256)

fb0636c089d362016027c59b3f9c43a06d7877cf17a6a3ba8513f84f15f1ae25

Signature (Ed25519, base64)

tuw/BBJqFmr17zu9/Q1/fZspV2z/6mTo+z45pg3i1x+TYWVqsiG2SS0Ay1PpHrm0VKIimzZ/IoRdq2FWkoYwCQ==

Merkle root

3dfdf7381c8d7ad52c2e382f4e16b6f321af764e7eaa340297113fa50b9a0792

Merkle path

["fb0461c6899173e15e7f6cf6e29db8f787d1f50ce3905a2d615233dc9f09dee3","9c41d5c092c5b264e2ba91d75b98c47e5e63cf080864dcc3274d968677e77533","b8653ab77d247269e4b0f86440eade41b0b57dc1026a161acc4513f9739fe646","ef4eb948a960fd0770b9a4b4f7b5ef0680069f6a989bd477b0b0b448949433ae","3bd9715512c82676c385fed732771f24ebe81b54e5e612e2a42b374cd204cb43","6ecd38ef7e06b18bb5668c28914c22a140cbc880bfdef0d88d81fcd138eb13b8","7842d0bf21b9fcb11e59bf16a36499a47b99033082bcfec64ef072cbf399f495","acfa4c36e68db3b1afa21e6b34209d4565933158e9487daaa1402965eacbe6de","09658889cacfd3b4774055914ca1c7dc01019b4163a75cca69ad1231a6c09eb7","37936f913f689a9d33a555e8ee4d0808689937077bd15c404c6439fc9c4c2bdb","0d20ba002935137dce802a41b47ccc057d9b3b57c12f66de859db47bec25b4dc","604ae16558eca5af8117fb43d1679552c9ba0a640fa3ad559207d79299863808","71f08c6b7e682817b9a4ad4f77f63e7c1d7b2090849a76f88e1644ea4a33fd62"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621946731 · entry 108e9186e8c5677a0a42…

Expected log hash

ea07e2ac95e2432412286c8e9f169e876b2f38f9762d26c0a0ce3cc128edcf3c 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":"v1787893493942","kind":"published-quote","locale":"en","page":"theme:metrohm/quality/en","quote":"Metrohm products are a pleasure to use and a reliable purchase.","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 (3dfdf7381c8d…), 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.