Polkadot v1.0: Sharding and Economic Security
This post is about the technology powering Polkadot. Polkadot is a sharded blockchain with heterogeneous shards.
Polkadot Consensus Part 3: BABE
Blind Assignment for Blockchain Extension (BABE) is a block production engine that was inspired by Ouroboros Praos, another proof-of-stake protocol. It can be used on its own because it provides probabilistic finality, or it can be coupled with a finality gadget like GRANDPA.