The concept of blockchain was first presented as a research project in 1991 and was developed before its first widely used implementation, Bitcoin, which was introduced in 2009. Since then, the number of cryptocurrencies, decentralized finance (DeFi) applications, non-fungible tokens (NFTs), and smart contracts has increased dramatically, greatly expanding the utility of blockchains. Blockchain Is The post What Is Blockchain? All You Need To Know appeared first on Times Tabloid .