{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the security of smart contracts ensured in blockchain?","a":"Transparency and immutability: The data in blockchain is transparent and publicly accessible, but cannot be tampered with. This makes smart contracts less vulnerable to attacks during the execution process."}]}],"pr":"6cd08b51abee4edcdd25eaa3984331604a99fc10aa71f4e4efa828e4a20a4555"}