started plantuml

classDiagram.txt

+@startuml
+
+class Participant{
+    - secretKey
+    + publicKey
+}
+class RemoteParticipant{
+    + publicKey
+}
+class Trade 
+class Exchange
+class Offer
+class Request
+
+Exchange <|-- Offer
+Exchange <|-- Request
+
+Exchange "1..n" - Trade
+
+@enduml
\ No newline at end of file