{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of digital identity verification?","a":"Controllable identity information: Blockchain technology allows users to independently control their own identity information, allowing them to  choose whether to disclose it or not."}]}],"pr":"1dc111805984981495c5054aa925bc0fda98eee79eb5782d7e45e602e07e068e"}