{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the disadvantages of blockchain technology?","a":"Performance  issues: The distributed sharing characteristic of blockchain technology causes its performance and speed to be affected when processing large amounts of data. For example, the transaction speed of Bitcoin is relatively slow, with a minimum waiting time of 10 minutes and sometimes even exceeding 1 hour, which is a challenge for some applications that require high real-time performance."}]}],"pr":"0236ff9ec421b017f648d68a2ab669cc50ffa7d78b012b05fbd79dab449cecd5"}