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 useful for performing drinking and wastewater analysis simultaneously”

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 2621591821

Proof data

Record hash (SHA-256)

fdcd051427c2bf41b1cad8eecfcd51c9919cd3cd329a58229e53871d39c2b4f1

Signature (Ed25519, base64)

0jXFC3CrvUVxigpcrp9QHfT7k9XSkIB4WD9oAQ0HFRmgXo/2bbzD7JjGRdW1J3IGsVNoYjPAcy9cWz5cSAEkAA==

Merkle root

80ef8d8174e5c9e41c4b3e86fd7f016ae3808fd6df1be7f458d6b538ad4a1573

Merkle path

["fdce77c6089b2c6f59b4d796b88fe6df4aa1bf5ba61e2c3963f6d2055a552114","1867e383436aa74cae65b463a8d3efcb86d7d7c7082740375fe2a7ffceeca5a1","1d13a90ffb86c163d990a52f4b3c735addbaeab13732c9477a88b32088b5895a","58edc97c0405793cd90038398dbf482e584ece3a19babc38248599ca4eb2baf2","1c284eb4a31bc688542f9efbc86a3437b50c08683369f8afb3a9cfe316e21cf2","0509fbcc1a2fb797d6acaf7042ff5637b626786c360555ea10f3dac937dbcd67","67b150dbe0f1f840e81f688f0048bc9e3b691b4f5a0aa056a08e2393755c4df1","58fc423e380676415b888d872fedcd115795fbb3b3fc8941825c01429af50b49","92e3c0a0642994575fcbfb010881b5535c2b23402eda4358d43ec67ff94d2add","ceab82280b174211c1c5f5ac4fab6d2226d5369b9db871d8f7a3b842b2d8505c","2f3a5804979637a78e38f295e0ea8ec9ba450431f1c19420ab04e7f3348ca6c4","b2e057f6d3dc99e972525873df46d4f5c7cce951e4ed689e0187dbd2ed661f51","39e0a5a8aea0469ddc4b7eb4f23756e8c15e3b75fe42ee4002904a9576881ad0"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621591821 · entry 108e9186e8c5677aaebc…

Expected log hash

1103461f2f136c93d3dd608a948686a2f30160cf05200779542dada269979b94 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":"v1787890464756","kind":"published-quote","locale":"en","page":"theme:metrohm/fit/en","quote":"Very useful for performing drinking and wastewater analysis simultaneously","rating":4,"review_date":"2024-12-02","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 (80ef8d8174e5…), 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.