{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of perpetual contracts in blockchain?","a":"No Delivery Time: Unlike traditional futures  contracts, perpetual contracts do not have a specified delivery time, allowing investors to continuously hold positions within the contract period."}]}],"pr":"4b245e7167fc372a96639a57f2f6cbd759bbafcb584fca441839d0347edf2fad"}