I don't know if the energy required to heat a historical building from servers is 'good' from a Utilitarian viewpoint - the energy consumed to do this is surely

I don't know if the energy required to heat a historical building from servers is 'good' from a Utilitarian viewpoint - the energy consumed to do this is surely greater than the amount of coal required to run some effective heaters and on the other hand if people aren't willing to fund green initiatives to keep the historical building going is it really worth the effort? On the other hand if you can have a green energy project fund itself with bitcoin while being even slightly net positive then I think that's useful, if only because it'll increase funding to green energy producers and that's a good thing (more users should allow for the benefits of economy of scale).