{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in cultural heritage preservation?","a":"Authentication of cultural heritage objects: The tamper-proof feature  of blockchain technology can be used"}]}],"pr":"43c44ccfa922f52b4c40cb86bf1b68f7022d015a68ca26e97060b13db71bf19b"}