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 2621946731

Proof data

Record hash (SHA-256)

de174180772905a128e2a47292a0a53e30c87490e486683672f481688f8d9f1f

Signature (Ed25519, base64)

GWZRlth2V0LStst7cPt3SOfgurp5VHoTX2pw6ZbZHE/yYhJcBP6CA4JqS5Kh1XWJnRCikyD3Pv+xdgf4bAfzAQ==

Merkle root

3dfdf7381c8d7ad52c2e382f4e16b6f321af764e7eaa340297113fa50b9a0792

Merkle path

["de17e5efc768a1b55f01c73c9611ddcda834eefd715fa1f65125c3670fe90b1a","b3cccb9b8099b45712a37278c5ad8ee5959970f774124c200cf32d1f3030c9e5","95e700d61498e6cc704c860a8854f6c68b1ba51678ca2444c43d9b1f9c37614a","0cbb591c92ee8011320b9d6a74226b50ad2c4f54aa64e5149978447292d69e0d","a3e8f71c5917f4aa7fd82aa3ef042a757da44f5c2b771b21e2ed23e016159ded","86773ed6a76a505f905617fbe5e29368432de7c663e050037f7505f98c026766","4101b2ea5668d7f450ff8f5f639029bd7d2056fc3f1a7544cfa8e12d965a98e8","197fc205c0fa4bd6671998bffe3fbd02558f966adab10a5a4d90663c941ce963","0889fe570bb8cbde20d467d78f57a4e23b149efbf0cc36c67c529e6a48d6e0b4","76945466836e0463a401668814962ce1e3c538c521fc9d21a1e2d606bffba0f1","70e1882a5838e1183d16ebe02c936514b005d694b8ba229570a2e337d1aea298","b8a4c33142c5ca8cf32fed12f73a84dac2b8094486f25a467e105e5e122c9805","be27a0191ca6ab7325f4c0624678ade47e6f5fbf47594f3e9c25afc28b5ae715","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/durability/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 (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.