n the framework of Presentism, we introduce a novel interpretation of time as a quantum memory, evolving in atomic instants, and show its compatibility with relativistic time dilations. First, we clarify our postulates on time, causality, and information, and define our ontology in terms of entanglement in a spatial lattice encoded in the Present memory. Then, we introduce our observer as an elementary massive particle, and describe its wave function from the entanglement in the lattice and across the instants. Finally, we derive the proper time of such particle from the information of entanglement in its causal cone. We conclude suggesting a more comprehensive theory of Quantum Gravity and a relation between the concept of memory and the emergence of complexity.