{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to art trading and copyright protection?","a":"Decentralized  transaction：Through blockchain technology，art trading can be decentralized，and the buyer and seller can conduct direct transactions without the intervention of intermediary institutions，thus reducing transaction costs and time."}]}],"pr":"dea31bbcdb42e47b479bb61c495714863c3fa4faf50c08f7176f1e42d9924f9f"}