The system is designed to differentiate between non-commercial and commercial use, though the current status of obtaining new keys has become complicated due to the passing of its creator, Dr. Friedrich Menges , in late 2023. Official License Structure

What’s certain is this: the device never again belonged to a single ledger or a single license key. It taught the city a lesson the guilds had missed—some doors are better opened together, and some keys are only keys because we agree they are.

The developers offer several legitimate pathways:

Spectragryph - optical spectroscopy software: Licenses/ Pricing