Public Blockchain from Jack Farris's blog

A public blockchain is an open, decentralized network where anyone can join, participate, and validate transactions. Unlike private blockchains, public blockchains are permissionless, meaning no central authority controls access, and they rely on consensus mechanisms like proof of work or proof of stake for transaction validation. Bitcoin and Ethereum are prime examples of public blockchains. These networks offer transparency, security, and censorship resistance, making them ideal for applications in cryptocurrency, decentralized finance (DeFi), and supply chain. Public blockchains enable global, peer-to-peer transactions without requiring intermediaries or centralized control.