Polkadot smart contract

Polkadot’s first mainnet chain candidate, Phase 1, launched on May 27, 2020 . It marked the initial step in a multi-stage rollout process detailed in the project’s mainnet launch roadmap.

The Polkadot network includes a main blockchain called the “relay chain” and many user-created parallel chains (or “parachains”) . It also has a connecting layer, or “bridge,” that allows value and data to be transferred between most blockchains — and can even be used to connect to non-blockchain databases.