What Customs Officers Use
Primary Identifier
CAS Number
The Chemical Abstracts Service number identifies the substance independent of brand name. Search by CAS number to retrieve all registered COA records for that compound.
Batch Matching
Lot / Batch Number
Match the Lot number on the physical shipment to the COA record on file. Confirms the specific batch in transit has a verified COA on the blockchain.
Lab Legitimacy
Accreditation Number
Each COA record displays the issuing lab's accreditation number. Cross-reference against the relevant national accreditation body to confirm the lab is licensed.
What a Registry Record Contains
CL Number Permanent blockchain record identifier
Unique to this COA submission. Immutable once anchored.
CAS Number Chemical substance identity
International standard for identifying chemical compounds.
Lot / Batch Number Specific production batch
Must match the number on the shipment manifest and physical label.
Lab Accreditation Number Issuing lab credential
Verifies the COA was produced by an accredited laboratory.
Blockchain Hash Document integrity proof
SHA-256 hash of the original document. Detects any tampering with a printed COA.
Original COA document Viewable and downloadable
The unmodified document as submitted by the issuing laboratory.
For Importers & Distributors
Require CL Registration from Your Suppliers
Specify CL number as a condition of purchase. Labs register COAs in under two minutes at no cost.
