{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology help establish a trustworthy identity verification system?","a":"Data immutability: Data  in blockchain technology is encrypted, and once recorded in a block, it is difficult to tamper with. This makes the information in the identity verification system highly credible, ensuring the integrity of identity information."}]}],"pr":"3dba437a6874f76a0c90a7236c32e6152f9aa8c8a0feb96a597813165c410332"}