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 instrument has not been delivering consistent or reliable 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 2621591821

Proof data

Record hash (SHA-256)

f822565e05934d4e67ed7cb2e26c0dbb257f36cc1302d5e7018e8b9256710687

Signature (Ed25519, base64)

eonifw/1oI3cwO0Q320YFc27aoAtUaUHrDbAs7TfYsDsmsiUciMGLLrr1wYL0xSieEdpWDS70O5HLN+t9SxOAQ==

Merkle root

80ef8d8174e5c9e41c4b3e86fd7f016ae3808fd6df1be7f458d6b538ad4a1573

Merkle path

["f82463bc3ed5fe0477b306c66a7e4eefb07cd7329a8bc6529c50a6188f331061","779b12768fb25dbe574753545b5a2430b01ab87c0b8315f40538674dc9a055b6","d4b47dda904b9d79887708191c4880f389a50ae6ac4c262b0b86e0cb8f97b0b1","3ccfe7b8d665f3cfe83deec7884bb4176a583fd00cadff0ba2d7a6875d177208","fe5659c9f1024f8638250eea81c30f5a23b05852b6b1a1934ab1128945e5b158","0e454f97fb10771b3926cb4deda8f9a102b9af1a6b8f3e6c1a18a7b2518ded50","6002a1167751d8840ca3f7be1922e9a6993768a20d36cf60021d3bb4d042f161","9c458fec88853febf101c666500d1cbe063b551daa45d01b99414250f0fccd9c","a9b05de55ad749385f18c5033f4b5b1c275e2a274df54520a61ad622557a09f3","759cdea2121e6c221848c375f1999af33de568b492ae4a28682e006479197b33","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/quality/en","quote":"the instrument has not been delivering consistent or reliable results","rating":1,"review_date":"2025-12-13","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.