Method, device, and computer program product for managing data object

A device for managing a data object, comprising:

• at least one processing unit;
• at least one memory coupled to the at least one processing unit and having instructions stored thereon for being executed by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform operations, the operations comprising:
• receiving from a requestor application system a copy request for obtaining a copy of the data object;
• obtaining at least one copy record associated with the data object from a group of copy records comprised in a copy blockchain associated with the data object;
• determining a number of copies of the data object based on the at least one copy record;
• and
• handling the copy request based on the determined number of the copies.

A computer program product, tangibly stored on a non-transient computer readable medium and comprising machine executable instructions, which when executed by a processor, cause the processor to perform operations, the operations comprising:

• receiving from a requestor application system a copy request for obtaining a copy of the data object;
• obtaining at least one copy record associated with the data object from a group of copy records comprising in a copy blockchain associated with the data object;
• determining a number of copies of the data object based on the at least one copy record;
• and
• handling the copy request based on the determined number of the copies.