{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The current major bottleneck of blockchain technology is:","a":"Storage capacity:  The data storage method in blockchain technology is distributed storage, which requires each node to save the entire history of the blockchain. As the blockchain continues to grow, the required storage capacity of the nodes also increases continuously, leading to the demand for storage resources in the blockchain system."}]}],"pr":"79f659c3fd3eea9d029a22e57a39e7f1d00b1c2f225481126d4e8cfd68104b23"}