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 2621349433

Proof data

Record hash (SHA-256)

fa5820a31b8dee1ca080c334b4471e1060e667b0ef9ef34865442fda86d52a2e

Signature (Ed25519, base64)

a8vgSza8quMU/XtDKil6Rz5QEXu043hbQ/H1dtboNCcSfP2WZcj8G3KS4+2qAC9UN6f24T2lEWVjdohiGLC3Ag==

Merkle root

52b348c94f3fdce59db013e2d8b151833bfb9c02163bc60ea07ad4321b96c806

Merkle path

["fa58451e3c85c97ccc920e240aa08e3267a942bad2faacd8758be545947712fd","b2a40d864f2a277da75dbee9c12833ae9db1dc6f172fbedb3fe55cc46695e8fe","afd56691a53784219e51fa93aeaae71d59dcce137bb70813d6eb40ef593653fa","618a7bcf8dd313dd0ffc7c285dcb260f6c2c03fd71979f9de4f49a201c9252dc","00b3c2c0f61ede303cb5f0de1075cbb4adc2a0451c35894f77afafef90e4e8b3","b7f3f6abfefdce74b72d712a0156838fd6d38451151b3757e48128e302cb63e7","42e4136533b8a31ede4a744a826fe7552eaa6a1e82fd0d9a49b36b954ea19522","879de13e2bbe10634af7e8ea8bee448c169445d4e30e3f5c1593192f3ed53524","db8841e15ca4ce52df2290cf78e18a50a8dcc3caa549f69b082daa8d63daddb0","161b1162d4945ccf70dffce8fd116f312e3e96540438a6eee83f085201365853","78867e012d4f81691a9b086099a3f900db9280c693f9bc94f2ed9e7d69eb59da","3a52f24592ba5f4bad559e917d6d3df45e954bc2d49d87ad062ddf6c6df26fc7","229c72486c3c5df50dc0930a08ed11a178309b1ce235a21e8ba3f4673dd0b361"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621349433 · entry 108e9186e8c5677a91b8…

Expected log hash

c0c478568c16caefc62b4dd151387aace853e1d48501c09aaebf0c1fbe3c7cab 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":"v1787884935070","kind":"published-quote","locale":"en","page":"theme:metrohm/fit/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 (52b348c94f3f…), 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.