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.

“This is also checked every time by the service technician.”

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)

f291a347bc0eff19f977470946bfa109322a1f003953028e198ff2a9a0a31f13

Signature (Ed25519, base64)

N6M4ZRjnZFe5R1ZliyLh1gh1Ji4dfsuUB15fZqBfIQpKIzoPh0hq+Wqx1REWuGLZ1agw4bElYEOcOqcQAvS0Dw==

Merkle root

21e7bb8f2fd2dd8d8171a23c0a79176483db4731970a3fe8e0e328189fa103b6

Merkle path

["f2a7ac10b75dc83c97e2badbb13c95a3d5ab160b9fc179cc076ef024568af67e","497d6400496929564f005f34874296244bbb1b02d4629cc2d4a32e590737e1dd","94f3e99a5398bee93764fb47ae5f5c4c1ef56f59cf1dcdaa1c55f5eefe044ffe","d7c80bc3307751bbcccfc39c15ba0d5cdd8c7efdccea376842b423e78654281f","458fa328b2bae2c34c8d1d7e32b1e733f745ed23c0e811c9e5a8fed2e770c0e7","6d7f9e79b60c9fab632e7606c7075308e0e10144f11a47e5e06d7b5da138993c","a690427d221addad6577934790930d362ab918b0957eb368f312ff3ef6630bce","51b1d6abc05ade738d6aba9716b48da1eb6c5611f929e0ed3798ebb76c51a421","626d762e7558770d1aa6e32ace8a09a52c1604eeb6cc9c73956b8348f2d6a055","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":"This is also checked every time by the service technician.","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.