{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the scalability issues of blockchain?","a":"Storage capacity limitation: The data volume of the blockchain account book will continuously  increase over time, resulting in the continuous expansion of the storage demand of the entire blockchain network. However, the existing hardware equipment and network bandwidth are limited, which poses challenges to the scalability of the blockchain network."}]}],"pr":"4a134ec36da4ea572eb8f6c6b346bcd3bf023e66f288e4df1a36c962620dd0e0"}