Verify a COA
The report ID and key are on the PDF. Scanning its QR code opens the same page.
on the report page
- The status: valid, superseded or withdrawn, with the reason.
- The sample and the results.
- How the client is related to the lab.
- Our photo of the vial as received.
- The PDF and its fingerprint.
- Every version, with the reason for each change.
demo report
HK-260925-1V5R1B
04NBZQSWSY8EESHMJYQBVAMBNM
Check a PDF you were given.
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sha256(file)
the fingerprint of the file appears here
Check the signature yourself.
Every record is signed with Ed25519. The report page links to the signed record.
Public keys (JSON)| key | fingerprint | status |
|---|---|---|
| hk-2026-1 | AF63 3A1E 64C0 A518 | Active |
| hk-demo-1 | 221C 513E 8091 01F5 | Demo key: never valid for real reports |
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