The Polkadot team released on Wednesday a major milestone for its Substrate blockchain framework, which now provides a way for blockchain applications to interface with the outside world without relying on external oracle providers.
Substrate is the name used for Polkadot’s blockchain building framework. It provides developers with a variety of tools to design their custom blockchain for a variety of possible applications. The blockchains can then be launched stand-alone or integrated in Polkadot’s network of shards, or “Parachains.”