This paper introduces Reasoning Claim Tokens (RCTs), an observational construct within the AIVO Standard designed to make AI reasoning inspectable without asserting correctness, causality, or compliance. RCTs capture discrete, time-indexed reasoning claims expressed by AI systems during inference and associate them with observable selection outcomes. Positioned beneath Prompt-Space Occupancy Score (PSOS) and Answer-Space Occupancy Score (ASOS), RCTs close the attribution gap between observed outcomes and un-inspectable reasoning contexts.