{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How promising is the application of blockchain technology in the field of data exchange and sharing?","a":"Secure Data Exchange:  Blockchain technology improves the security of data exchange. Data exchange parties can directly"}]}],"pr":"5ab6467b966347cb711cff8f0cdb1693f5f81afec28593272f686dc18a5be8e0"}