{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the issues surrounding the adoption of blockchain technology?","a":"Performance and scalability: The current transaction processing speed of blockchain is relatively slow, which cannot meet the demands of high concurrency and high-frequency transactions. In addition, the scalability of blockchain is limited. As the number of nodes increases, the network congestion problem becomes  more serious, affecting the popularization and application of blockchain."}]}],"pr":"b68fe74f607aa051f074c53b9b687ae6861fd7ec666b2bc8d01039c00e6a1a0f"}