{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security and reliability of smart contracts?","a":"Data cannot be tampered with: Blockchain uses encryption algorithms to ensure that once data is recorded in a block, it is difficult to tamper with. This ensures the security of smart contract data  and transaction history records."}]}],"pr":"057c05e9378b29a08cdac5589b76aa91155182748a53a0e048e4d9eb5ac695a0"}