{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the combination of blockchain and IoT improve security and credibility?","a":"Decentralization: Blockchain technology is a decentralized  database without a central platform controlling the data. In IoT, a decentralized architecture can effectively prevent hacker attacks and enhance the system's risk resistance."}]}],"pr":"eaf7ba24d08d53e284ae220b140c95482b9f891050473484da56dc9faa9fa89b"}