PCVP is a theory-independent verification protocol for quantum coherence and interference.It enables the measurement and verification of the visibility behavior V in quantum systems such as photons, atoms, and qubits through a unified, Planck-normalized method. The protocol is based on the operational law:V = V₀ · exp(−Δt_obs / τ_coh) · exp(−αE) · exp(−βI),where V₀ is the maximum visibility, Δt_obs is the observation window, E is the disturbance factor, and I is the information extraction.By analyzing the relationship between these parameters, PCVP can determine whether a system preserves or loses coherence — independent of platform or theoretical framework. PCVP functions as a universal measurement and verification tool and can be used in quantum optics, quantum information, interferometry, metrology, Standard Model tests, and navigation.It delivers standardized coherence parameters (τ_coh, α, β, V₀) and enables comparability across different experimental environments. Licensed under the Faical Lami – Custom Research License, PCVP is intended for professional laboratories, research centers, and companies requiring reliable and reproducible verification methods for quantum coherence. > Note: From [2025 okt 26] this work is governed by the Faical Lami Custom Research License. Previous versions are bound by their original terms and cannot be redistributed or expanded. License Transition Clause (Retroactive Use Limitation) > Important Notice: Any previous downloads or copies of this work are strictly bound to the original license terms active at the time of download. No rights beyond those stated in the original license are granted. Redistribution or expansion of use rights is strictly prohibited. Any third party receiving the work indirectly is not granted any rights and must obtain written authorization directly from the author. All new usage from [2025 okt 26] is governed exclusively by the current license version. Violations may result in termination of license and legal action.