Please take a look at my article about the real meaning of the Planck constant and how all physical laws, constants and units revolve around it. Everything physically observable is derived from the subjective granularity that each entity experiences through its state of motion (Special Relativity) and the external energy density around it (General Relativity):

https://medium.com/@quantumwormholes/understanding-the-planck-constant-d1fbfa9b1a04

I hope you find these Planck scale relationships as fascinating as I did.