{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to query the authentication module in a blockchain using gRPC endpoints?","a":"First, ensure that the gRPC library and the corresponding blockchain platform-specific gRPC client library (such  as Ethereum, IPFS, etc.) have been installed."}]}],"pr":"021b26efed0834cc92699bb6c25c8dc859c751301eb207f4c762fa37637216da"}