Part 2: Observational Tests and Predictions - Primordial Black Holes: Framework for a Unified Universe

The primordial black hole (PBH) framework proposed as an alternative to particle dark matter theories and makes specific, testable predictions across multiple observational domains. This paper presents a comprehensive set of observational signatures that can distinguish our PBH model from standard ΛCDM and other dark matter alternatives. We detail predictions for high-redshift galaxy observations, gravitational wave signatures, microlensing events, X-ray binary populations, and galactic dynamics. Particular emphasis is placed on forthcoming observations from JWST, LISA, Roman Space Telescope, and next-generation radio interferometers that will serve as critical tests of the framework. Bayesian analysis of current observational data shows this model achieves better statistical agreement with recent JWST observations of early massive galaxies at z>10 while maintaining consistency with other cosmological constraints. We outline a roadmap of observations spanning the next decade that will conclusively test whether PBHs rather than particle dark matter constitute the primary mass component of large-scale cosmic structure.