At the heart of the Joystream Network sits a content, social, governance and asset ledger that coordinates the activity of all consumers, service providers, creators and applications. The blockchain is a standalone L1 blockchain with it’s own independent validator set. Currently, there is only a single reference implementation, which is written in Rust, and is based on the Substrate blockchain development framework. This means that the consensus and networking logic have already been implemented, and the community can focus on the domain specific state machine which is core to Joystream