{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of blockchain technology in the second-hand transaction market?","a":"Ensuring information security: Blockchain adopts a decentralized design, without a single  attack target, which can effectively reduce the risk of information leakage. At the same time, the encryption technology of blockchain can ensure the security of user privacy and transaction information."}]}],"pr":"1ad3ffb28793b865af7e72b52e34605370340cc69943e389441aa49f0b88d210"}