{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to the construction of smart cities?","a":"Improving data security: The construction of smart cities requires a large amount of data support, such as energy consumption, traffic management, and ecological environment. Blockchain technology can achieve decentralized data storage, ensuring the integrity and security  of data, and preventing data from being attacked and stolen."}]}],"pr":"c9ee9725d7eb8e69a2841f88ee5e1daad5c45e13754a00f9852045f752c11f32"}