{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the shortcomings of blockchain technology?","a":"Performance Bottleneck: The transaction processing speed of blockchain is relatively slow, and the amount of transactions processed per second is limited. As transaction volume increases, the blockchain network may become  congested, causing extended transaction confirmation times and affecting its application experience."}]}],"pr":"e887df00c0ab8de0048485c11c759b7da23ac512b2ed139d8fe0cbad7f484025"}