{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure security?","a":"Cryptographic protection: Blockchain adopts encryption algorithms (such as SHA-256) and digital  signature technology to ensure the confidentiality, integrity, and authentication of data, preventing data leaks and tampering."}]}],"pr":"a4d23d0dd296e48aa74f83516ed81ff5c140f7e27b90be681a8a3bb474705151"}