Protobuf definition for the external interface (i.e. gRPC) of the Emerald Dshackle. This gRPC definitions are part of the general Emerald API, please see the project with whole API at https://github.com/emeraldpay/emerald-grpc
Dshakle also has some internal Protobuf schemas, for example to serialize cached values. You can find them in ../src/main/proto/.