Crypto Island


Welcome to Crypto Island!

It’s your standard developer blog, totally unrelated to any of these other crypto islands. I hope you’ll come to associate mine with tutorials, open source, maybe some bad drawings of pirates. And if all goes well, the occasional utopian idea that won’t come across as scammy or uncomfortably colonial.

I go by jefdaj online. Here are some ways you can contact me:

Encrypted emails aren’t required of course, but I like them! See this post if you want to get into that kind of thing. Here’s my public key. You can also look it up on or import it directly:

gpg --keyserver \
  --recv-key 54C195A345205DCABC2010EEE604517174B3D49E