{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the expansion issues of blockchain?","a":"Throughput: The transaction processing capability of the blockchain network is limited  by the block capacity, resulting in low throughput and inability to meet high concurrency demands. In high-traffic situations, transaction processing is slow, confirmation times are long, and the user experience is poor."}]}],"pr":"de357cc7a6c3c801301fa2d144b2b6103818118854039ca456ff618f7e378743"}