Bitcoin is the largest cryptocurrency by market cap and adding more of it to the existing circulation is called Bitcoin Mining.
The ledger’s existence, which is freely maintained by thousands of people known as nodes, allows anyone to see both the current state of Bitcoin ownership and its entire history.
There is no central authority that decides whether or not transactions should be structured to fit into new blocks.
Miners are basically changing the state of the ledger, about who owns what, when they generate new blocks.
However, it is feasible for a large number of miners to complete the Proof of Work at almost the same time and simultaneously post his new block to the network.
For the bulk of Bitcoin’s brief existence, mining has been an energy-intensive business.
Bitcoin mining, as per some estimates, consumes the same amount of electricity as whole countries.