This record publishes Paper V of a five-paper coherence-field stress program, providing the experimental closure: explicit signatures, null tests, and falsification criteria for coherence-mediated stress transport.Series context (prior papers, Zenodo):(1) Ampere Longitudinal Force as Transient Phase-Gradient Stress in a Coherence Field — https://zenodo.org/records/18180865(2) Phase Solitons and Topological Stress Transport in a Coherence Field: From Transient Gradients to Persistent Structures — https://zenodo.org/records/18181016(3) Coherence-Mediated Stress Accumulation and Plasticity in Crystalline Solids — https://zenodo.org/records/18181341(4) Information-Guided Stress Routing in a Coherence Field — https://zenodo.org/records/18181703Paper V contribution (this record):• Defines measurable observables distinguishing coherence-mediated stress from Maxwell stress, elastic response, and thermal expansion.• Primary discriminators: timing observable η = J_rise/J_total, delayed response t_delay ~ L/c_θ, and a threshold condition |∇θ|_crit ~ ℓ^{-1}.• Provides mandatory conservative null tests (slow ramp, symmetric geometry, thermal-only, mechanical isolation, amorphous controls).• Supplies a detailed, replication-oriented tabletop apparatus concept (pulsed current source + high-bandwidth current measurement + LDV/piezo sensing + timing discipline + shielding).• States explicit decision criteria under which the hypothesis must be rejected.This work is designed for independent replication, preregistration, and unambiguous falsification.

This paper presents experimentally falsifiable signatures of coherence-mediated stress transport predicted in prior theoretical work. Building on the establishment of transient phase-gradient forces, persistent solitonic stress structures, and information-guided stress routing, we identify measurable observables that distinguish coherence-field effects from conventional elastic, electromagnetic, and thermal mechanisms. We propose timing-based discriminators, material-dependence tests, threshold behavior, and delayed mechanical responses as primary experimental signatures. Explicit null tests are defined to ensure conservative interpretation. The framework is designed to enable independent replication and rejection if coherence-mediated stress transport does not occur. This work completes the theoretical-to-experimental bridge of the coherence-field program.