Adds mev supply chain blurb.

Author: ckartik

docs/README.md

@@ -4,6 +4,12 @@
 Introducing mev-commit, a peer-to-peer (P2P) networking software that serves as a conduit for real-time communication with execution providers. mev-commit enables MEV actors to join and utilize a P2P network for the exchange of execution bids and commitments, enriching the transaction execution experience by allowing for granular specification of execution needs and receiving real-time commitments.
 
 ## Actors
+The roles of actors within this p2p ecosystem are defined with respect to other actors. A list of possible actors is given below. A good way to interpret them is to observe a given actors' relative placement in the diagram shown below. For example, an MEV Searcher (Transaction Originator) is a user to a Sequencer, and however, that same sequencer can be a user to a block builder. Thus, it's best to think of the roles of actors from the perspective of the MEV Supply Chain. To the left of the diagram are users who source MEV; and to the right of the diagram, are asset holders that help users actualize their MEV. These asset holders are providers in the p2p ecosystem. 
+
+Traditionally, information only moved to the right in this supply chain, from users to providers. With our P2P network, we're allowing information about how the MEV is actualized to flow from providers back to users, along with cryptographic commitments that strengthen the value of information exchange.
+
+![](mev-supply-chain.png)
+
 **Providers**
 
 Providers of execution services (**Block builders, Rollup Sequencers)**