A method and system of identifying articles in commerce including tagging a raw material during said raw material's manufacturing process with a unique molecular marker in a home country in which the raw material was produced. The marker identifies home country information. The tagged raw material is transported from the home country to a foreign country. The tagged raw material is processed in the foreign country to generate a processed product. The processed product is transported to the home country. The processed product is analyzing to determine the presence of the marker in the processed product. A determination is made whether the raw material originated in the home country in response to the detection of the marker.