If they could tell an install is pirated then they would lock it down

They either count all installs as legitimate or pirated copies are not picked up by their telemetry

deleted by creator

According to what Unity reps said elsewhere, they have no way of knowing what’s a bought install, what’s a demo, what’s a charity bundle, what’s a pirated install, and what is someone loading a webpage with a WebGL program integrated (every page view = 1 install).

Instead, they want to estimate how much people owe them. Using secret methods with no accountability.