Bitcoin demonstrates the logic as to why reality must be discrete; you cannot produce a binary (classical state) without a discrete chonon/tick/block. Bitcoin allows anyone to empirically observe the architecture of the smallest possible unit of discrete change for any bounded computational system. No other system can answer for what Planck Time is in the form of rules, logic/process and geometry. Physics already admits Planck Time is where the meaning of time ceases to hold, but broad academia has rejected it because they cannot describe it.

While the act of observation through apparatus is bound to measure in discreet excitation units, this doesn't negate the fact that certain aspects of reality are seemingly continuous. For example, the electromagnetic field is continuous; a photon is a discrete excitation of that field.