{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the disadvantages and challenges of blockchain technology?","a":"Scalability: As the number of users and transactions on the blockchain increases, the scalability of the system becomes a challenge. Traditional blockchain systems have limited scalability,  which may lead to congestion and slow transaction processing. Therefore, the development of scalable blockchain solutions is an important direction for the industry."}]}],"pr":"f0b2270cc38b84d92c7ce3028c17a536d42204e77f2a5af19244712b9e54bc94"}