In a blockchain network

In a blockchain network, all nodes keep track of all transactions hence it is called as a
decentralized public ledger. Using hash functions and cryptography, each node in the
network are highly secured. All nodes in the network are validated a new block to add
it to the network. The mechanism that makes the blockchain to be a decentralized
security is called mining. There are dierent uses for blockchain. 1.5 million people in
the world have no formal id.This makes almost invisible to society and susceptible to
human tracking. Microsoft working on using blockchain to create a secure identity
system. Using blockchain can track where diamonds come from. This could prevent the
diamonds from conicting zones entering the market. It can also use for shaking up the
music industry. It allows artists to sell direct to fans and share the revenue between
creators. Registering land using blockchain could help stamp out fraud. Blockchain
technology is one of the most discussed technology today.