{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the defense strategies for the blockchain network's outer shell?","a":"Node dispersion layout: By deploying a large number of nodes in different geographical locations and network environments, the overall network's resistance to attacks and fault  tolerance are improved."}]}],"pr":"fd6e7c2452f516413f6b7cfaa14ecbf58e2acf9cf44fc8d7b03455c706de31a7"}