{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security issues and challenges of blockchain technology?","a":"scalability: The scalability of blockchain technology is a major challenge. As the number of  users and transactions increases, the performance of the blockchain network may"}]}],"pr":"ac313c5a3193fb3b0d549687566b32cfb4f9c345c341169f3c45f29787d0fb61"}