{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the differences between blockchain and traditional databases?","a":"Data updates and access permissions: Data updates in blockchain require verification by consensus algorithms to ensure security and consistency; traditional databases require specialized personnel to control data updates and access permissions. In a blockchain, once the data is chain, it cannot be tampered with or deleted."}]}],"pr":"ad019e60d7992c0f664e461b8a27ebb9aedf99f2bc6c3241fc0a75924c7851fc"}