Bitcoin Challenge
bitcoinchallenge.codes
bitcoinchallenge.codes
However you can only use it once. If the algorithm becomes known, you need another, a substantially different one.
https://www.reddit.com/r/Bitcoin/comments/9kq7it/introducing...
I don't want to donate to charity (I have my own reasons for that, don't ask)
Although they managed to do a pretty plausible portrayal of your average bitcoin libertarian lol