{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in digital identity verification?","a":"Distributed ledger technology: Digital identity authentication systems based on  blockchain can use distributed ledger technology to store user information, ensuring the security and reliability of the data."}]}],"pr":"05aad648b8692fea2c6bdcb59e79b04cdf441e77d60e1743869d0ce6eca7ca75"}