{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the security and effectiveness of electronic contracts?","a":"Decentralized storage: Blockchain technology adopts a distributed node consensus mechanism, storing electronic contract data on multiple nodes, thus avoiding the security risks  of centralized storage and improving the security of the data."}]}],"pr":"0f17d679b192299cea1138c5303a6a2d38aa4ae66699c0c34a1db811a79e5ec6"}