{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do consensus rules in blockchain ensure the traceability of transactions?","a":"The mining process requires a significant amount  of energy and computational resources, which makes it difficult for"}]}],"pr":"dc73b8e65ed51b3d1323d815a5a54447c3d5a9ab7f7c6dadcab1e4457301dd0f"}