{"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":"fd4d7975406c9baa934076d0df53cec5000c323a6362f11c715af7e9153d3289"}