Introducing PSOS-C and the Full Attribution ChainAIVO Journal • October 2025Executive SummaryIn early 2025, the Prompt-Space Occupancy Score (PSOS™) introduced a reproducible way to measure how brands appear within AI assistant responses. It established visibility as a quantifiable, auditable dimension of brand equity.PSOS-C, the conversion-weighted evolution of that metric, extends PSOS beyond exposure. It connects assistant-level visibility to measurable user actions and verified financial out...