{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve problems in the digital advertising industry?","a":"Fraud prevention: Blockchain technology can effectively prevent advertising fraud, such as fake impressions and clicks, by ensuring that each  advertising transaction is unique and cannot be duplicated. This helps to reduce advertising costs and improve the effectiveness of advertising campaigns"}]}],"pr":"9c9164d68d36dcbc4122a4c4f0fc4441664bc45abf1137479843ecd835a73762"}