At its core, blockchain is a distributed digital ledger that stores data of any kind. A blockchain can record information about Cryptocurrency transactions, NFT (non-fungible token) ownership or DeFi (Decentralized finance) smart contracts.
While any conventional database can store this sort of information, blockchain is unique in that it’s totally decentralized. Rather than being maintained in one location, by a centralized administrator (think of an Excel spreadsheet or a bank database) many identical copies of a blockchain database are held on multiple computers spread out across a network. These individual computers are referred to as nodes.
Blockchain technology is used for many different purposes, from providing financial services to administering voting systems. (e.g. Cryptocurrency, Banking, Asset transfers, Smart contracts, Voting, and Supply chain monitoring)
With the advantages of higher accuracy of transactions, no need for intermediaries, extra security and more efficient transfers, blockchain technology has far-reaching applications across many industries.
The full potential of blockchain technology likely remains to be discovered.