{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What types of smart contracts are included in blockchain?","a":"Supply chain management contracts: This type of smart contract is mainly  used to optimize supply chain processes and can achieve automatic tracking, logistics management, order processing, and other businesses."}]}],"pr":"fed1407eff3875a3aee2395551c5ee547105cddb18afc443acd4191bbacf5cbe"}