{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of blockchain technology in enhancing the security of electronic contracts?","a":"Digital identity authentication: Blockchain technology can be combined with digital identity authentication technologies to ensure  the authenticity of signatures on electronic contracts."}]}],"pr":"77abf177ee78c3153050ca0f9d8f97e74af3345906c7c3de56cf97c7ec659fdf"}