Decentralized Exchange on Plasma

I'm just using this as a sketchbook. Please complain if this is the wrong place ;-)

This system is designed for a single token pair.

Messages:
- create order(buy/sell, amount, price) -> id
- cancel order(id)
- combine orders(buys: amounts, prices, sells: amounts, prices)
- execute order(?) -> ?
- combine order execution result

Internal nodes combine order books from their children and post the results upwards.

Orders are executed at the root node, and execution results are sent downwards.

Internal nodes have to split up execution results, update order books and also take into account canceled orders.

Start by reviewing the issue's message list and the described flow between child nodes and the root node. The payload names no files, tests, or entry points; the work is not ready to pick up until the exchange protocol and execution behavior are defined.

Written by the indexing model from the issue text.