I was asked by the IOTA team to work on GPU acceleration for "their" ""hash"" algorithm. Not only was there no documentation or even comments for that matter, everyone has been less than helpful. They also insulted part of their contributors as "too autistic to write documentation".

Finally, they wanted to pay me in IOTA, which was the point I walked away.

I'm sure there's more going on there, but I wouldn't want to know. I'm not touching this cc with a 10 foot pole.