{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the real problems faced by the development of blockchain?","a":"Legal and regulatory supervision: The application of blockchain technology in various fields brings new challenges to the existing legal and regulatory systems. It is necessary to  establish a sound legal and regulatory framework to promote the healthy development of the blockchain industry."}]}],"pr":"a75dd565e4eb2448dc410b0472080237088509c0e4041d2acf666bba446f95fb"}