SM Codes™ — The Identity Layer of the SAFE-Matter™ Evidential Safety Governance System

SM Codes™ define the identity layer of the SAFE-Matter™ evidential safety governance system. They establish a deterministic method for identifying, classifying, and attributing safety-relevant functions within an environment.Each SM Code represents a specific safety function or condition to which all evidential inputs are attributed. This enables precise evaluation of operational condition at the level of reliance, rather than at the level of physical assets or system groupings.The paper formalises the role of SM Codes within SAFE-Matter, including their function in evidence attribution, their relationship to temporal validity through Evidence Renewal Intervals (ERI), and their integration into the Trust Engine for real-time evaluation.SM Codes form the foundational identity layer upon which evidential safety governance is built.