{"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":"Smart contracts can be used to facilitate the exchange of medical data, protect  patient privacy, and ensure the safety and effectiveness of drugs and medical products."}]}],"pr":"c61cb18b5e6bf0ec04098488b775495fd19138a1abf369a9432a399389b4b7fd"}