New coins are created during the process known as 'mining'.

As compensation for spending their computational resources, the miners receive rewards for every block that they successfully add to the blockchain.

At the moment of Bitcoin’s launch, the reward was 50 bitcoins per block: this number gets halved with every 210,000 new blocks mined — which takes the network roughly four years. As of 2020, the block reward has been halved three times and comprises 6.25 bitcoins.

Mining Bitcoins can be very profitable for miners, depending on the current hash rate and the price of Bitcoin.