{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What kind of logic can be written in smart contracts in blockchain?","a":"Financial Services: Smart  contracts can be used to automate financial contracts, such as derivative contracts and option contracts, thereby improving transaction efficiency, reducing costs and risks."}]}],"pr":"fc24f997f62d5b346d60286c42a5d4af664d28aed95863f1d0281de5dd5c62f1"}