What Is a Blockchain? How Does It Work?

Blockchain technology is a system 

in which a distributed database or ledger is shared across the nodes of a computer network. 

Businesses around the world incorporated blockchain technology in recent years. 

But how does blockchain technology work? 

 Blockchain is a combination of three leading technologies,

namely cryptographic keys, 

 a peer-to-peer network containing a shared ledger,

and means of computing to store the network’s transactions and records.