From niche to mainstream
A blockchain is a distributed ledger, an online database shared among the nodes of a computer network, where a wide range of data can be stored. There are many different blockchains and many uses, most people are now familiar with cryptocurrencies such as Bitcoin and Ethereum, or NFTs (Non-Fungible Tokens) such as Bored Apes and Crypto Punks, the underlying technology is blockchain but blockchains are capable of so much more.