Polkadot is a next-generation blockchain platform designed to enable multiple blockchains to interoperate and share information seamlessly. Founded by Dr. Gavin Wood, a co-founder of Ethereum, Polkadot's unique architecture allows different chains to connect under a unified network. With its relay chain and parachain structure, Polkadot aims to address scalability, security, and innovation challenges present in current blockchain systems. Its vision is to create a decentralized web where independent blockchains can collaborate while maintaining their distinct characteristics.