{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the backend options available for password management in blockchain?","a":"Biometric identification technologies: Such  as fingerprint recognition, facial recognition, etc., used for user identity verification."}]}],"pr":"5e7361334c4c5816d97d4779cd9a92c32728b16dc57ec77c98586167cdb6ec47"}