{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve authentication?","a":"Data Unchangeability: Once data is recorded in blockchain technology, it cannot be  tampered with. This feature makes identity authentication based on blockchain highly reliable, as it prevents unauthorized modifications and ensures the integrity of the data."}]}],"pr":"cfcfa992298dd4a9e3e7a4620f168403174aa2da02e9cc5844a0382403059c25"}