{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security challenges faced by the blockchain?","a":"Transaction Security: In the blockchain network, transaction security involves the protection of assets."}]}],"pr":"61195cfb0983e42a0cca758d1cfa678ce1b3f7be9cbe7582eeaaf2f27553451d"}