Abstract: Disclosed herein are systems and methods for preserving data using a replication and blockchain notarization. In one aspect, an exemplary method comprises, by a hardware processor, receiving, from a user, a request for a legal hold of data and criteria for controlling access to the data, creating a legal hold object and establishing an access control criteria, creating, in the cloud storage, a cloud storage space that corresponds to the created legal hold object, and defining the access control for reading from the created cloud storage space, searching, in a backup data storage of a client data system, to identify all relevant data corresponding to the created legal hold object, and storing the identified relevant data and the search queries used for the identification of the relevant data, replicating the identified relevant data in the created cloud storage space, and notarizing the replicated relevant data using a blockchain notarization service.

Abstract: Disclosed herein are systems and methods for preserving data using a replication and blockchain notarization. In one aspect, an exemplary method comprises, by a hardware processor, receiving, from a user, a request for a legal hold of data and criteria for controlling access to the data, creating a legal hold object and establishing an access control criteria, creating, in the cloud storage, a cloud storage space that corresponds to the created legal hold object, and defining the access control for reading from the created cloud storage space, searching, in a backup data storage of a client data system, to identify all relevant data corresponding to the created legal hold object, and storing the identified relevant data and the search queries used for the identification of the relevant data, replicating the identified relevant data in the created cloud storage space, and notarizing the replicated relevant data using a blockchain notarization service.