Polkadot unites and secures a growing ecosystem of specialized blockchains called parachains. Apps and services on Polkadot can securely communicate across chains, forming the basis for a truly interoperable decentralized web. Polkadot enables cross-blockchain transfers of any type of data or asset, not just tokens. Polkadot provides unprecedented economic scalability by enabling a common set of validators to secure multiple blockchains. Polkadot’s novel data availability and validity scheme allows chains to interact with each other in a meaningful way. Polkadot has a sophisticated governance system where all stakeholders have a voice.