SAFE-Matter™: Evidence Renewal Interval (ERI) Standard — Deterministic Time-Bound Validity for Life-Critical Safety Systems

This paper defines the Evidence Renewal Interval (ERI) as a governing parameter within the SAFE-Matter™ framework, establishing the maximum duration for which verified evidence of a life-critical system’s condition remains valid for reliance.Conventional certification and inspection models verify systems at discrete points in time but do not provide a mechanism for determining whether those systems remain safe at the moment they are relied upon. This creates a structural gap between historical compliance and present-state assurance.The ERI standard addresses this gap by introducing a deterministic, time-bound model for evidential validity. It defines how the reliability of verified system states degrades as…