{"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":"4c895e588cacd3df8870f857e093029d33f2c1f9523c3632c5c5385545f9c1db"}