{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of smart contracts in blockchain?","a":"Unmodifiable: All data in the blockchain itself is unmodifiable, therefore the smart contract code deployed on the blockchain and the data output generated during execution are also unmodifiable. Nodes running smart contracts do not need to worry about other nodes maliciously modifying  code and data."}]}],"pr":"021b6074b34bb73352c5a088abf507bdeea31b75f37d93833970886e0d793a20"}