The latest sponsor for an MMA promotion is Litecoin.
DASH has already come in through Bellator and Bitcoin in Karate Combat and other promotions but do you think we'll see STEEM come in? I know has had some stuff up in the past for the BJJ community but I think in a year it seems all alt-coins have suffered, this is good to see that 2019 things could pick up again.
I wrote more about the UFC 232 sponsor over at Sherdog check it out.