You can find the witness setup documentation here:
https://gitlab.com/blurt/blurt/-/tree/dev/doc/witnesses?ref_type=heads
We provide a Docker container and a presynced blockchain state that you can download and it reduces the time needed to sync up.
Thanks a lot! Those were nice instructions, easy to follow... Will be around for a while, and might end up creating a witness to support the platform in not so long!!