{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the bottlenecks of blockchain technology?","a":"Performance and scalability: When a blockchain system processes a large number of transactions, performance bottlenecks are prone to occur. Due to the decentralized network architecture of blockchain, each transaction needs to be verified by all nodes in the  network, resulting in slower transaction speeds. In addition, as the number of nodes in the blockchain increases, network congestion may also be exacerbated."}]}],"pr":"f83aa3b09a2eb0abe9943570b5366f8ea27b0721d8fde1f814b99b18aab0edef"}