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.

“timely support and thorough work have ensured smooth operation in our lab.”

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 2622255255

Proof data

Record hash (SHA-256)

f0488b346eb5597d7d2469954d92b715ead74014b0fa91bd84f77673a64c59e4

Signature (Ed25519, base64)

IKbrNR+u+o62fQ4spZMmKe7VBNd1uNi3cVU9xHsXmbro+Fdwrz77Oyxn9xmgBvdmG4rupckjXO3+/yDdoI8JCw==

Merkle root

21e7bb8f2fd2dd8d8171a23c0a79176483db4731970a3fe8e0e328189fa103b6

Merkle path

["f044ece3b5e3d8cdfabc218245f910e1083095748153766b9b22c85262c6b1bb","3a836c234b155945af756e6f7598ef8b88e453f97d1396f4800aae014594f555","614ac6562cbcb3fc2a82eec934cd4741166d0dbbee4257238de9fb63fca4d4a0","386e6cf097494462cea7d8c13ef3c3ef3447067c9aae05e516b8812ccbac8811","55dbf90508d82ab0289edb15d617ee75bab49ec4b2f4ec0850df3e438613e1d8","06f7bab5054e06bb793d9e91a9bb3ddaebfbe1bf8d8caa6499453ec574e47c7f","95a5baa22f43f8d8c8235553d07e703462973d99e0200e1cc24fbee8cbd087ff","0e97975d0b99c83e0b198ee3ef7ac1bc3e579ce1a7f5772ade323e81b2d53894","d89a52a01a541b59156273af57f0ef6ab28eb9e04f65134ee4f3cce3c02da721","124102c5ff2e28252a7def1d56dc16060ed063c315fa36d40c0db67ab18f800a","86a38c0fcc2a0f58e73c1541cd81a9d4d59236c6cad8d8b17ad2e150865bd82c","6e0657ef54ce5a26aa6e53e6acb50333540606833b5dff9dfae3fd631d2d5a6d","d87974d5c94f3efd5c6f3798372ad4dd7ab166b2a7dda721b13f924d617b3784","1db6a684d2ddde304dce7dd32015445ec4c0ccdad689f35384be07da0c8e852e"]

Anchored

2026-08-28

Public log entry

search.sigstore.dev, log index 2622255255 · entry 108e9186e8c5677a7795…

Expected log hash

f2a0e8f2b4dab3949c746be15f65076279656fc5309daaeff038c9a778ee0653 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":"v1787896781880","kind":"published-quote","locale":"en","page":"theme:metrohm/service/en","quote":"timely support and thorough work have ensured smooth operation in our lab.","rating":4,"review_date":"2025-12-17","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 (21e7bb8f2fd2…), 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.