Type the certificate ID from any KB Analytical COA (format KB-#####). The published purity, identity, and content must match the PDF you were shown — if they don’t, it isn’t authentic.
Try a sample: KB-24815 (pass) · KB-24763 (advisory) · KB-24688 (fail)
Anyone can forge a nice-looking PDF. What they can’t forge is a matching entry in an independent lab’s registry. Before you trust a certificate a vendor sent you, look it up here and confirm every number lines up — the compound name, the purity, the measured content, and the date. No entry, or numbers that don’t match, means the document is unverified.