Polkadot (DOT) is a next-generation blockchain platform designed to connect multiple blockchains into one unified network. Launched by Gavin Wood, one of Ethereum’s co-founders, Polkadot focuses on solving major issues like scalability, interoperability, and security. Instead of running everything on a single chain, Polkadot uses a system of parachains — independent blockchains that can communicate with each other while relying on the main Relay Chain for security. The DOT token plays an important role in governance, staking, and maintaining network stability.