Flow

Protocol
- On Open
  - Initial Node
    - Setup a Blockchain with only Gensis Block
  - New Node
    - Enter the (address, port)s of other Nodes.
    - Try to send your port to them
    - Get the blockchain from all the nodes.
    - Try to get one instance of the blockchain that is agreed by more than 50 % of the Nodes
- On Close
  - Try to save it in a file