Working with state

[Shimuuar]

State handling is complicated:

• How do we handle startup and create StateView?
• Writing of complete state is inefficient. Especially on every block. We could amortize it by writing
• Another option is to write UTXOs in DB directly. Has
• We probably want to allow concrete blockchain implementors a lot of freedom in implementation of state handling. Different blockchain could allow for different optimizations. We may want to have/allow different database for blocks and state