Miners' earnings fell from $100 million to $50 million on the first official day after the halving, following the furor over Bitcoin's fee increase.
The cost of producing each bitcoin after halving has reached almost 80 thousand dollars. If the price of Bitcoin does not grow significantly, miners will not make a profit

Miners' Earnings Reduction: Following the halving event, miners' earnings are typically reduced by half as the block reward – the amount of newly created bitcoins awarded to miners for validating transactions and adding them to the blockchain – is cut in half. 
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