This paper argues for a bounded distinction between local proper time and shared time. Proper time remains the invariant local time carried by timelike worldlines, while shared time is the common temporal order built from durable, mutually comparable records. Relativity denies any invariant global now, decoherence distinguishes lawful propagation from durable fact, and finite-region gravity localizes where shared history becomes physically written. The result is a bounded constitutive claim about shared temporal order rather than a new ontology of time: local proper time remains standard, while globally comparable history is physically constituted by records that survive causal transit and irreversible transaction. Transit is lawful propagation without an exportable record. Transaction is irreversible coupling at an interface. Record is stabilized distinction durable enough for mutual comparison. In the quantum-coherent regime, lawful evolution may proceed without yet yielding shared time in the stronger sense of durable, mutually comparable history. Nothing here modifies general relativity or quantum mechanics. The paper introduces no new forces, no new fields, and no consciousness-based collapse. Its claim is interpretive but not merely semantic: proper time is local; shared time is the common temporal order constituted by durable, mutually comparable records.
Mark Grant (Thu,) studied this question.