{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to digital identity verification?","a":"Controllable identity information: Digital identity recognition technology based on blockchain allows users to autonomously control their identity information and choose whether to disclose  or protect their personal information. This enables users to have better control over their personal data and increases privacy protection."}]}],"pr":"5b945df8d9ce510a5d01f5e777c8d864b49263a9455c4c432fda2fc1a9b10c57"}