[xtracto]

The way it was explained to me is that when you "farm" your "plots" the first time, you are just generating and writing a lot of numbers that are written in the 100GB plots.

Then the transaction validation is done by whoever finds value in their storage (instead of doing a lot of computations online, they are pre-generated).

I assume there's a bunch of tree-like structures in the middle to make the search faster.