This paper articulates the three foundational principles underlying Registration Regime Theory (RRT): power, memory, and social fixation. It argues that social order and inequality are not sustained primarily through force, ideology, or economic production alone, but through regimes of registration that stabilize authority across time. The study examines how power becomes durable when embedded in records, how memory is institutionalized through inscriptional infrastructures, and how social fixation preserves hierarchies by binding identities, rights, and obligations to recorded forms. By conceptualizing registration as an ontological infrastructure, the paper clarifies the theoretical core of RRT and its capacity to explain long-term social continuity. This framework contributes to social theory, political ontology, and studies of digital governance by demonstrating how writing, accounting, and algorithmic systems function as time-governing technologies that pre-structure social futures.