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 reliable instrument”

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 2621505474

Proof data

Record hash (SHA-256)

e90cb653d7d0f6fbf5ffe0e0d4a7903de52579364d455d9150e0a062f60ca398

Signature (Ed25519, base64)

xSS8LE9ORt1l1FFNiQyOGjc5xJbeRomTt9A6Kt3QopADmnLIGdPHd6B+Z1uJU+YcRa9zBpLC1QCsrN/l3J/KBQ==

Merkle root

d07487a7d8598747d5b143d9a16722ca7a83f5bd36bc79d5bf9130c2672dae41

Merkle path

["e90de6755ab0bde7a5a462bd5566444e9095fd6e978c14fa5ae4e25c9ba3884d","32c4bb3a2bec38d46005f4c3b88d5b69ba88e5903fa6c155398a2e1ca79ed672","f5bb0df908e9218af48c390a83b1b3f9d036c090110ba5520c23c4e28b9aa4e2","285db0d70a9b643eb2b4db578ad7988b0496cc87a3221ec1c8d1354c3aa1826c","df7652febe6b992b8f05ef05a32df4fff286dfb4672114e0c0713921ba32ea9d","72aa6f6fd3326c8e337d108deab0feaa554b8b3aa5da163d5a6f7efd15f82314","7008e4d71e026718ee9b313fae93379990b6b24c88c999a259855922827e855f","56d91f641741cc0f7fd0460811b7a02e14666962d4e3c34e9500a2b1c3bb389f","1ed889c3d97d887d036a9d3312225fc83ab3c8c7377af4e2ed977da01162d692","55d3040eca1ec7b9d7f36c094edee749f3d40ad5e24efeab28d3e746d0016888","dde04501221585b3edcac82f28b73f6f85d04306c70c367a547e001202650706","1db8eeb72a832ef397ada98504c0ec0287f444e0c0c7621027138bd678c593ee","911ba8dcde13822360ea6fb0819baf610395bb7c340acb6748efb8a9ea9a5792","8b493634c5f80ca26f55160c398064560cb8d0eb1dbc3d1272d6851dfd141a81"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2621505474 · entry 108e9186e8c5677a1258…

Expected log hash

7fc4ddca6f65b68d7bb8897b96188547f56c1ba672ff212c685cdf4bf7438da9 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":"v1787887633012","kind":"published-quote","locale":"en","page":"theme:metrohm/durability/en","quote":"Very reliable instrument","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 (d07487a7d859…), 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.