And in reality much much less than a Datacenter would. Once plot files are written they use a cache to look up their hashes. The utility of those files on the other hand are a whole different conversation.
Their software runs a full node and a wallet, so most users are a node by default (if I’m not mistaken) and rewards are double for the first couple years. You can run their software and just about anything, low powered CPU’s, pi’s, NAS, etc. So I don’t doubt their numbers are too far from the truth, esp considering how much China supports them. Nodes have been slowly dropping over time as the crypto boom cycle has died down.
As far as real transactions, they’ve got a way to go. Just releasing NFT support a few months ago.
In the beginning everyone had to run a full node even if they weren’t farming (in Chia instead of mining it’s 2 stages, first plotting and then farming) but earlier this year Chia released a new light wallet which doesn’t run a full node. Now it should be mostly actual farmers that run full nodes. Chia currently has 22 EiB of netspace which would be more than 1.5 million of 14 TB hard drives.
If you google Chia launch it says it started with more than 100k nodes already
If you zoom out that dashboard it says at one point 200k nodes that than very sudden changes but in a general trend downwards. Data might not be accurate
I don't understand much of Chia or other coins, but it does not look very organic
It's different every day, usually between 8 and 11 moves. It depends on the minimum number of moves required to clear the tiles in the given arrangement.