They have a pretty interesting data bounty program as well.
https://www.dolthub.com/bounties
I participated in one a few months back. I had to stop midway inbetween because work was calling but it was a lot of fun. I know I earned some dollars, lol, but probably too few to count for the competition.
I am actually trying to convince my manager to put up a few bounties later this year.
Their Discord support is also super impressive.