{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to ensure the security of a blockchain network?","a":"Cryptographic principles: Applying cryptographic techniques such as encryption algorithms and digital signatures can ensure the security of data during transmission  and storage."}]}],"pr":"dc0602cd0bf6c9f71de8644c92bacf1c80c65de7254faeacde752e16681c75e1"}