{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the disadvantages and challenges of blockchain technology?","a":"Performance Issues: The distributed sharing characteristic of blockchain technology makes performance and efficiency a bottleneck when processing a large amount of data. For example, the transaction speed of Bitcoin is relatively slow, sometimes requiring waiting for 10 minutes or even 1 hour or more, which is a  challenge for some applications with high real-time requirements. To solve this problem, the industry is studying other consensus mechanisms and solutions to improve performance."}]}],"pr":"5ee92f4f20972d855437d40595bdcbabdb5bc75a2956b8dd18435a32a6a4d422"}