{"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":"ba30d11145c99cfc02dd51bdfd621d9c25da2cb822737e02a74d1936ff85b746"}