I don't know that there's any way we could know. I mean if you are mining on your own, maybe we know about it if you are using a solo pool or something, but it's also possible that we never find out about miners working on their own until (and unless) they find a block (and say who they are in the coinbase).
I don't know that there's any way we could know. I mean if you are mining on your own, maybe we know about it if you are using a solo pool or something, but it's also possible that we never find out about miners working on their own until (and unless) they find a block (and say who they are in the coinbase).