you will never know that, that is quite literally THE most coveted information from any miner out there.
why? because then other miners will come and mess around with the supply (assuming it's on-grid) thus raising the cost of the og miner. miners are always competing against each other, we gotta have an edge ya feel me
in any case, anything around 6 usd cents or lower is still profitable. until halving, then no one knows :O
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