{"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":"Decentralization: Blockchain adopts a decentralized network architecture, with data stored on multiple nodes distributed globally. This  avoids the risk of centralized control and increases the system's resistance to attacks."}]}],"pr":"27c03b2de2099e73e39bd20738c3e1d0f77bf408059af7e25197bcdcf2d169a0"}