{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the sharding mechanism in blockchain ensure network security?","a":"Data consistency: The  sharding mechanism ensures data consistency through encryption algorithms and consensus mechanisms. Each node needs to validate the validity of transactions, and only transactions confirmed by consensus can be written into the blockchain."}]}],"pr":"475969aec747ab2ca12ab7a9b4b1dc5df291d38e9db388b5c676388772a61d06"}