Cryptocurrency mining is the process of verifying and adding transaction records to a blockchain, which is a public ledger of all cryptocurrency transactions. Miners use specialized computers to solve complex mathematical problems, and the first miner to solve a problem gets to add the next block of transactions to the blockchain and is rewarded with cryptocurrency.
The legality of crypto mining varies by country. In some countries, such as the United States, crypto mining is legal, while in other countries, such as China, it is illegal. The legal status of crypto mining is often unclear, and it is important to research the laws in your country before mining cryptocurrency.