Bitcoin mining started with miners using their own computer’s CPU to operate, however, the competition has grown. There are specific facilities dedicated to bitcoin mining, running 24/7. According to The Block, Crypto funds are giving out prizes for miners to work for them. As there are many more miners, the difficulty lies in finding new blocks to mine. In fact, there are now companies using specialized hardware which is specifically for bitcoin mining. Therefore, it depends on your skills and the technology you have access to.
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