Province-city-county real estate registration data consistency detection method based on information fingerprints

The invention discloses a province, city and county real estate registration data consistency detection method based on information fingerprints. Comprising the following steps: respectively extracting data needing to be accessed from provincial and city-county real estate registration databases, organizing the data into a format required by a message, and storing the data as character strings; performing unification processing on the character string format, namely deleting nodes and fields which do not participate in consistency comparison, sorting the nodes and the fields, and deleting space symbols and line feed symbols; the information fingerprint of each piece of service data is extracted according to an SHA-256 algorithm; and comparing the information fingerprints extracted from the same business identification of the provincial and city-county real estate registration data, if the information fingerprints are consistent, indicating that the business data are consistent, and if the information fingerpr