{"p":"can-20","op":"mint","tick":"GANS","amt":"9","rows":[{"df":"qa","content":[{"q":"谁发明了基于区块链的分布式分类账？","a":"Satoshi Nakamoto 在2008年发明了基于区块链的分布式分类账。"}]}],"pr":"bbb42719c3f93454ccf8261893a600910ade074f0c84950ad9f4aa345ff4a313"}