{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in the field of Internet of Things (IoT)?","a":"Device certification and traceability: Through blockchain technology, the certification  and management of Internet of Things devices can be realized, ensuring the legality of devices, tracing the historical records of devices, and preventing counterfeit and substandard devices from entering the market."}]}],"pr":"8320c0de7efeaae537ef8f5f59f22389011014dee8d31a3391ff04e1120afb10"}