I don't think HN has DM functionality, but feel free to contact me on any platform.
In any case, feel free to take the source code and to deploy it elsewhere.
That said, it might be best to have Sci-Hub adopt Handshake directly? I think you might be able to get in touch with Alexandra Elbakyan, the person behind Sci-Hub, through its Twitter: https://twitter.com/Sci_Hub
For context, Handshake is a new project aiming to create a distributed certificate authority and naming system. Domain names on Handshake are very difficult to shut down, so you could have a sci hub domain on Handshake that continuously tracks the sci hub servers. Users would be able to always access sci hub from the same domain in this case.