Multidirectional syncronization of confidential data using distributed ledgers

A computer-implemented method, comprising:

• receiving, using at least one processor, a request from a first computing system to modify reference data, the reference data being maintained at a second computing system;
• using the at least one processor, approving the requested modification to the reference data based on a notarization criterion maintained within an element of a distributed ledger, and perform operations that record notarization data characterizing the approved modification within an additional element of the distributed ledger;
• and
• transmitting, using the at least one processor, the notarization data to the first computing system, the notarization data causing an application program executed by the first computing system to modify local reference data in accordance with the notarization data.

An apparatus, comprising:

• a memory storing instructions;
• a communications interface;
• and
• at least one processor coupled to the communications interface and the memory, the at least one processor being configured to execute the instructions to:
• transmit, via the communications interface, a request to modify an element of local reference data to a first computing system, the first computing system performing operations that approve the requested modification based on a notarization criterion maintained within an element of a first distributed ledger, and that record notarization data characterizing the approved modification within an additional element of the first distributed ledger;
• receive the notarization data from the first computing system via the communications interface;
• and
• modify a portion of the local reference data in accordance with the notarization data.