Miners make new squares on the chain through a procedure called mining.
In a blockchain each square has its very own interesting nonce and hash, yet in addition references the hash of the past square in the chain, so mining a square isn't simple, particularly on huge chains.
Miners utilize unique programming to take care of the staggeringly perplexing math issue of finding a nonce that produces an acknowledged hash. Since the nonce is just 32 bits and the hash is 256, there are about four billion potential nonce-hash blends that must be mined before the correct one is found. At the point when that happens miners are said to have discovered the "brilliant nonce" and their square is added to the chain.
Rolling out an improvement to any square prior in the chain requires re-mining the square with the change, however the entirety of the hinders that come after. This is the reason it's amazingly hard to control blockchain innovation. Consider it is as "security in math" since finding brilliant nonces requires a colossal measure of time and registering power.
At the point when a square is effectively mined, the change is acknowledged by the entirety of the hubs on the system and the miner is compensated monetarily.