Duplicate COA Detection

Methodology: Records are grouped by test fingerprint — testing lab + compound + purity% + content_mg + test date. A fingerprint appearing under two or more distinct vendor names is surfaced here. The testing lab is part of the fingerprint, so identical readings from two different labs are treated as two tests rather than one resold test. Batch numbers are deliberately excluded from the fingerprint — vendors assign them independently — and are shown only as evidence. Records whose purity or content is zero or unreadable are excluded, because an absent measurement is not a match.

This page presents evidence, not conclusions. A shared fingerprint shows that certificates are not independent analyses. One common reason is that a laboratory has issued a single test under several vendor names. Some labs do that openly and mark it on the certificate — keeping the original certificate number and appending a vendor tag, so the relationship stays visible on the document. Others issue a fresh, unrelated certificate number for each copy, in which case the link is invisible from the outside and only surfaces when the underlying measurements are compared. This page applies the same test to every lab and does not treat one as worse than the other. Cases where the issuing lab marks the reissue itself are labelled below.

None of this establishes who produced the material, and nothing here should be read as an allegation against any named party.