{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can I query a node's historical state through grpcurl?","a":"First, determine the gRPC service and its corresponding proto file  that you want to query. For example, let's assume you have a gRPC service named"}]}],"pr":"3a28c3d4b6f71d229a0383fac57ba73f220a7a1e4a241269f2cd97d1d69cd9aa"}