{"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":"20573f8ed2b360750742931f29a55ec71b89f761f333e8bf53353c66c805549c"}