{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain in the field of public welfare and charity?","a":"Blockchain technology can reduce the cost of transaction verification and information  dissemination, improve the efficiency of donation and project implementation, and enable more efficient and convenient participation in public"}]}],"pr":"d91b1e4207246e1217e338b632ae366c8c562f69fb9064a5b73de2a242374a8e"}