{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security and immutability of transactions?","a":"Cryptographic Protection: Blockchain uses encryption technology to encrypt transaction  data, ensuring the security of data transmission and access. Only nodes possessing the correct keys can decrypt and verify transactions, thereby preventing unauthorized tampering."}]}],"pr":"f04fa4f498164029756b8be07f1e7c5a67c798e648669940bf3457f4c6b72956"}