@davepolaschek @joel
Sorry about the docker-only config example. It also supports a json file for config. You just need to be able to compile the go code for OpenBSD; that shouldn't be too hard.
I bet Anubis might be easier to use for now as its more popular and mine is more of a work-in-progress / hack. I made my own because I wanted this as a "captcha" before LLMs and Anubis existed, and also because I wanted to use a memory-hard hash function like Scrypt or Argon because I figured that would inflict a lot more pain on bots in the situation where the bot operators eventually decided to bite the bullet and just solve the PoW challenge.