The invention provides a block chain data
rollback processing method and
system, and the method comprises the steps: firstly detecting and verifying the newly-added
business data of a user, writing the newly-added
business data into a preset
database, verifying whether the
business data is abnormal or not in the writing process, transmitting the business data to a
verification node for confirmation, and writing a block confirmed by the
verification node into a block chain; if the block chain is abnormal, the
consensus node generating and sending a data
rollback request to the
consensus leader node for
verification, and the
consensus leader node generating a data
rollback structural body, signing the data rollback structural body and sending the signed data rollback structural body to the block
chain network; the consensus node receiving and verifying the data rollback structural body, and if the verification is passed, generating a sponsored
ticket; and the consensus leader node counting the number of sponsored tickets and judging whether
rollback operation can be carried out or not. According to the block chain data rollback
processing method and the
processing system thereof provided by the invention, the risk of
dirty data problem is reduced, the data rollback of the block chain is conveniently realized, and the user loss caused by rollback can be subjected to insurance compensation.