{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do validation nodes in blockchain ensure network security and stability?","a":"Cryptographic encryption: Blockchain uses cryptographic encryption techniques to secure the network and protect  the integrity of the data. The encryption algorithm uses a public key and a private key, with the private key used to"}]}],"pr":"a02d94e1873f28eca5063b43be9680d6ca94fefd450f95ed5c752d40a7648c36"}