{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the immutability of transactions?","a":"Cryptographic encryption: Blockchain uses cryptographic encryption methods, including public-private key encryption and digital signature technology. The transaction parties use their private keys to encrypt the transaction information, and then verify it through the public key. This encryption method ensures that only participants holding the correct private key can decrypt  the information."}]}],"pr":"4093c706eec6394ed1df7f63f9712dfa87daf55534b23b7ff5cba68a1a49c395"}