{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do durable nonces in blockchain contribute to password upgrade operations?","a":"Generate one-time passwords: Users generate a unique and one-time password when they need to log into a specific  service or system."}]}],"pr":"8db9a1bea007ecc45e285691f0184cfd55bd7590237526565f51fb2a84783252"}