{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the real problems faced by the development of blockchain?","a":"Technical maturity: Although blockchain technology has made significant progress, there are still some limitations in terms of performance, scalability, and usability. How to further improve the maturity of blockchain technology to meet the needs of more practical application scenarios is an  urgent problem to be solved."}]}],"pr":"be76113ca7ebc500070bdfb6322843fcd1ac576dbb8d6d2c54f8a65ac480feb7"}