Fecha de publicación: -- Fuente: WIPO "tomato" The compositions and methods described herein relate to authentication using Sid4CID substances—customized stable isotopes, rare earth elements, and precision-engineered compounds—optionally combined with CLR colorants formulated from diverse molecular combinations. These traceable taggants are incorporated at trace-level concentrations through various application modalities and integrated pathways into commercial materials or coatings. CLR compounds encompass a diverse spectrum of engineered colorant systems, designed to maintain detectability and functional integrity across varied chemical environments and coating architectures. The incorporation of taggants enables detection through a range of analytical technologies, spanning non-destructive field instruments and advanced laboratory-based assays. The system supports anomaly detection, digital governance, and blockchain-based traceability through structured APIs and secure platforms. Sid4CID-CLR materials and coatings function as covert markers for identity, provenance, and anti-counterfeiting, enhancing compliance and intellectual property protection across commercial domains.