PoC of CBC beacon chain

[yudetamago]

• Refinement of CBC is required?
  • Validator rotation
    • Including the issue how to know other validator's weight.
  • Signature scheme
    • Beacon chain spec uses BLS signature, this is sufficient for CBC?
• Just applying beacon chain spec (with some modifications) to CBC?
  • Block proposal
    • ref: CBCification ethereum/consensus-specs#701
  • Slashing mechanism
    • At least equivocation causes to be slashed.
• Optimization
  • Message validation
    • Detect invalid message and equivocation.
  • Fork choice
    • LMD Ghost optimization
  • Safety oracles?