How it works
Anyone can become a miner, well if you have the necessary equipment’s to solve cryptography puzzles.
As mentioned earlier miners do the work of adding new blocks on the blockchain network and as a result get rewarded in coins such as Bitcoin on the Bitcoin blockchain.
The equipment’s that do the job are well known as nodes in other words computers .Back in 2009 it was very easy to mine through a personal computer , nowadays it is impossible you will need more computational and electric power to mine and compete against miners to earn the reward. There are various algorithms use the process of block creation such as proof of work. Other mechanisms have come about with time such as proof of stake and proof of consensus etc.
Proof of work also makes it hard to tamper with the blocks on a chain .If you do this you will be required to calculate all the other blocks.