Method and device for determining data consistency during credential migration

The invention provides a method and device for determining data consistency during credential migration, and the method comprises the steps: obtaining a plurality of report related abstract values of each data report stored in a block chain for a plurality of data reports determined according to the same tabulation original data; wherein the data report comprises a target data report generated by a newly constructed target system and at least one original data report generated by at least one original system; based on the multiple report related abstract values of all the data reports, report consistency comparison is carried out according to a preset comparison rule, and a report consistency comparison result between the target data report and each original data report is determined; and determining a data consistency result in the credential migration period according to a consistency comparison result of all reports. By designing an integrated target system and performing consensus uplink on the digest val