I was looking into it, but so far haven't found anything specific. I only know a bit from my travel through Thailand, Cambodia and Myanmar. Every morning the monks go through the streets to collect alms from each business and household. Most seem to give rice and/or cash and they collect it all in big bowls.

I spent some time in a meditation center in Myanmar where they rely on donations to run the center. The largest ongoing cost seems to be the food. They had a calendar with breakfast and lunch orders (no dinner BTW) with the names of the donors. I picked a day to pay for a lunch which I think was about 100 USD in 2016 for 300 people or so. There's no charge for the meditation as they believe that the information is too valuable to put a cost on it. You'd think this would invite a lot of people who want to come and stay for free and get fed too! However it doesn't seem to be the case (probably because they're expected to meditate for more than 12 hours a day). It just seems to work. My guess is that most of the funding comes from rich people who like to have prestige or think it will get them a better position in heaven. IDK

I do see a lot of similarities between bitcoin and Buddhist culture, but I think bitcoin culture might be a bit young and fragmented at this point in time.