prhn

I'm building what amounts to a Windows DLL. It will be loaded as a windows shell extension. It does not talk to a server. It's all native.

What is the easiest way to paywall this? I've seen services like keygen.sh, but the licensing fees are quite high.

I don't want to build, deploy, and maintain a server just to manage serial numbers and perform license authentication.

What are y'all using?