{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the OCR module in blockchain verify the signature of Oracle reports?","a":"Preprocessing:  The OCR module performs preprocessing on the reports, including image enhancement, noise removal, and character segmentation."}]}],"pr":"96cbcaff0c6d955d3d55b8ddc4a0f24866a153c16a3cbe525431edcafe1cf2af"}