I recall reading your announcement here on HN. I'm using a license verification system for the cPanel Varnish Plugin (https://www.unixy.net/varnish ). I only distribute python byte code so this is where I do the licensing logic. But I know real well it won't deter determined crackers. But the licensing system and the cracking effort has to be tedious enough for folks to become conscious of their actions and their damaging aspect (more cracking leads to fewer releases leads to fewer resources leads to a dead product). At least for people with a modicum of conscience.
I also recall being confused as to how this will work with an on-premise IaaS type app. For example, I'm gauging interest for shipping "Cachoid" to service providers so they can offer it to their end users. And this is where I think Keygen could help. What kind of pricing are you considering so far?
Thanks