Fuente: WIPO "circular economy" Method for characterizing a plastic material, including the procedures of marking a plastic material using a chemical-based marker and recording the information in an exchange platform, wherein the marker includes information related to at least one of an ownership of the plastic material, a polymer type of the plastic material, an intended use of the plastic material, a loop count denoting a number of times the plastic material has been recycled and a percentage of recycled content in the plastic material and wherein the recording enables increased tracking and utilization of the plastic material.