{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the functions and application scenarios of OCR modules in blockchain?","a":"Identity authentication: OCR technology can recognize text information on passports, ID cards and other documents, achieving automatic verification of user identity and  ensuring the security of transactions."}]}],"pr":"5f8534de4b7823dd7de856c662ad2746710a94f3bcbe883c97710d65e91d332c"}