How does bitcoin mining work?

Bitcoin mining is done using the processing power of computers. This computing power depends on the processing power (CPU) of the hardware involved. Bitcoin miners use the processing power of their computers to solve mathematical puzzles created by the bitcoin algorithm and to verify transactions. In return, they receive rewards in BTC, also known as block rewards or mining rewards. In this way, they produce new bitcoins.
Bitcoin transactions are collected into blocks, which are added to a database called the blockchain. The full nodes of the Bitcoin network monitor the blockchain and verify the transactions that take place on it. Bitcoin miners download the entire blockchain history and aggregate valid transactions into a block.
Bitcoin miners also verify transaction information by solving computational mathematical problems, making the Bitcoin network robust. The idea behind verifying Bitcoin transaction information is to prevent double payments or malicious transactions.
Initially Bitcoin mining was done on individual desktops with ordinary central processing units (CPUs). But as the network grew and the number of transactions increased, this method became too slow. Today bitcoin mining is done through large mining pools scattered across many geographic regions, and many mining companies have sprung up.