{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to digital identity and authentication?","a":"Controllable identity information: Blockchain technology  allows users to autonomously control their identity information, allowing them to choose whether to disclose it publicly or anonymously."}]}],"pr":"486414b9844360d2a2835560f0e5abf3608b6cbcc65ec36588c6505001e9caf6"}