{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the notable differences between Push messages in a blockchain?","a":"Data security: Due  to the characteristics of blockchain, Push messages need to ensure the security of data during transmission. Some notable encryption technologies include symmetric encryption, asymmetric encryption, and hashing."}]}],"pr":"35104e55b7e50c8603f26ef4494d3ebd0cd25dc3d46c187332787f77d324d0ec"}