{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a blockchain, how can the type enforcement and persistence of objects be ensured?","a":"Smart contracts: Utilizing smart contracts to constrain and standardize transaction behavior on the blockchain. The code and data in smart contracts possess Determinism and immutability, thereby  ensuring object type enforceability."}]}],"pr":"53b8c8fbee67325271e2119c5eb14ebe1a8a8cc045547c058aae2fa3b056a293"}