I used to play EL myself back in the day, (long enough ago I forgot my premium account information,) I could see Entropy being interested in bitcoin. However, you might also want to talk to Learner about using it in his implementation, I believe it's called Other Life. It could be even more useful in the business model he uses.

I'm just a small fry in the development world, to the point that I still only call myself an aspiring developer, but I know it would be useful in Learner's model because it's my intention to eventually create a game that uses a business model inspired by the one Learner implemented to which I intended to use bitcoin or another cryptocurrency in lieu of third parties for escro and payment processing.